HP-19 – Targeted Cooling for the Metal Industry’s Hottest Workstations

Workstations in the metal industry, such as welding and plasma cutting areas, generate intense heat. This excess warmth can impair concentration, reduce stamina, and increase the risk of equipment overheating. Traditional hall-wide cooling systems or fans often fail to focus air where it’s most needed. The Rex Nordic HP-19 portable air conditioner solves this problem with efficient, targeted cooling, delivering relief exactly where thermal stress is highest. Effective Cooling for Welding and Cutting Stations Welding and plasma cutting can rapidly raise temperatures to uncomfortable levels. General air conditioning often isn’t enough to cool the immediate workspace, where glowing metal and arc radiation generate significant heat. With the HP-19, cool airflow is directed right to the hot zone, improving comfort and safety around the worker or machine, without needing to overcool the entire facility. Mobile Cooling Power – No Installation Required The Rex Nordic HP-19 is a mobile 4-in-1 air conditioner designed for demanding industrial environments. It provides cooling, heating, air purification, and dehumidification in one robust unit. Key features include: Durable steel Easy to move with wheels and handles Operates from a standard 230 V outlet – no installation required Compact size, approx. 80–90 kg Delivers up to 15°C cooling in the target zone Simultaneously filters dust and harmful vapors from the air Cool Air Exactly Where You Need It The HP-19 can be positioned close to heat-intensive work areas, with airflow directed precisely using adjustable nozzles or optional flexible ducts. A 10-meter duct, for example, can channel cool air directly to a welder’s workstation or a specific piece of equipment, without wasting cooling power across the hall. What about the hot exhaust air? HP-19 works like a powerful air conditioner: it draws in warm air, cools it, and blows out cool air from the front, while warm exhaust air is released from the rear. The unit can be used with or without an exhaust hose. In smaller or enclosed areas, we recommend using the hose to vent hot air outdoors or upwards, away from the workspace, for optimal efficiency. In large, well-ventilated production halls, HP-19 can be used without a hose – the heat disperses widely and doesn’t interfere with local cooling. Thanks to its flexibility, HP-19 is ready to use anywhere: position it, aim the airflow, and switch it on. Energy-Efficient and Eco-Friendly Choice The HP-19 is energy efficient and has low operating costs. Its advanced compressor and heat exchange technologies produce high cooling output with relatively low electricity consumption. For instance, it delivers 5.6 kW of cooling power using just 2.3 kW of electricity. The device also uses a refrigerant with a low global warming potential (GWP), making it an environmentally responsible choice. Clean Air Alongside Cooling he HP-19 includes high-performance industrial air filters that remove dust, smoke, and other airborne contaminants. In welding areas, for example, fumes and fine metal particles are significantly reduced by the unit’s filtration system, improving indoor air quality and reducing workers’ exposure. It also helps protect sensitive equipment and products from excess heat and dust, as the HP-19 cools and filters air simultaneously. Trusted by Thousands of Industrial Operators The Rex Nordic HP-19 and its more powerful counterpart, the HP-60, are based on the popular Airrex HSC series – a long-trusted solution across industrial sites, construction areas, and agricultural facilities. These updated models retain the proven design while offering modernized technology, improved efficiency, and new features such as heating and WiFi control. Ready for Demanding Conditions HP-19 is the metal industry’s precision cooling solution – mobile, energy-efficient, and instantly ready to use. It delivers precise cooling exactly where it’s needed, improves air quality, and protects both workers and equipment – all without costly installations. Interested? Contact us to find out how the HP-19 could be the right fit for your facility.
How a European stable keeps horses cool and comfortable with REX14000

Key highlights Up to 12°C cooling: Ensures comfort for horses during hot days. Safe and chemical-free: Evaporative cooling using water with optional ice cubes. Quiet operation (55 dB): Maintains calm in animal environments. Portable and compact: Easy to move around stables and arenas. Enhanced worker comfort: Cooler conditions for stable staff. Proven versatility: Larger REX Nordic models, like the REX25000, deliver excellent results in outdoor fields, reducing heat and deterring horseflies. Battling summer heat in horse stables During the hot summer days, when temperatures inside horse stables can soar above 30°C (86°F), the environment often becomes uncomfortably hot, causing stress for the animals and disrupting their routine. To ensure optimal conditions for the horses’ well-being, a horse stable in Europe decided to try the REX14000 Air Cooler to solve the issue. Understanding the cooling challenges in stables The stable faced extreme temperatures and humidity that affected the horses’ comfort and performance. Traditional cooling solutions, such as fans or air conditioning, presented challenges: fans often require large units that take up valuable space and are not efficient at cooling since they merely recirculate the existing hot air. Air conditioning systems, while effective, are typically impractical and expensive in a stable environment. How REX14000 solves the heat problem in horse stables The REX14000 was chosen for its portability, lightweight design, quiet operation, and ease of use. It requires both an electricity connection and a water supply, which can be either a direct connection or filled manually. The unit provides up to a 12°C cooling effect depending on the ambient temperature. Using natural evaporative cooling, it ensures safety for both animals and handlers. Good air circulation, such as open windows or proper ventilation, is recommended to maintain balanced humidity levels. The quiet operation, at around 55 dB, ensures horses remain calm and unbothered by the cooler’s presence. Unlike standard fans, which merely move existing hot air around, the REX14000 delivers real cooling by introducing a fresh, cooled airflow. Its compact design occupies minimal space, making it ideal for busy stables and arenas. Cooling in action: Horses’ reactions and staff feedback After implementation, the stable manager reported a noticeable difference in the horses’ behavior. Horses were visibly more relaxed, some even choosing to stand near the cooler’s airflow. The improved comfort led to more effective training sessions and better overall animal welfare during the hottest months. Importantly, the stable staff appreciated the unit’s portability, allowing it to be repositioned between stables, arenas, and grooming areas as needed. The stable workers were also pleased to work in conditions that were much cooler and more comfortable. Why REX14000 is a must-have for horse stables The REX14000 Air Cooler proved to be a reliable and animal-friendly solution for keeping horse stables cool and comfortable during the summer heat. By providing a safe, quiet, and effective cooling method, it contributed to improved animal welfare and performance. In addition to the REX14000, some stables in Europe have tested REX Nordic’s larger air coolers, such as the REX25000, in outdoor stable settings with excellent results. The powerful airflow from these larger units not only provided significant cooling but also helped deter horseflies, which are a common nuisance for horses in fields. Some horses even spent time next to the air coolers, enjoying both the cooling effect and the reduced presence of biting flies. This reinforces the value of REX Nordic’s air cooling solutions for both indoor and outdoor equine environments. This case highlights REX14000’s versatility not only for horse stables but also for any animal facilities or workspaces needing efficient, chemical-free cooling.
Maintaining the right temperature in potato storage with a mobile air conditioner

Proper storage of potatoes requires precise temperature control, as fluctuations can directly impact their quality and shelf life. For small-scale farms, the challenge is often finding a versatile and cost-effective solution that doesn’t require major upfront investment. The HP-19 mobile air conditioner from Rex Nordic offers a practical and flexible answer. Norwegian potato farmer Per Try, from Søgne, tested the HP-19 in his potato storage — and also managed to heat his workshop using the same device. Cost-Effective Temperature Control for Potato Storage Per Try faced a common problem shared by many farmers: how to maintain the ideal temperature in a potato storage space without skyrocketing energy costs. Storage temperature has a direct impact on the taste, structure, and usability of potatoes. Early potatoes store best in humid conditions between +10 and +13 °C, while regular table potatoes need cooler conditions around +4 to +6 °C. For potatoes grown specifically for French fry production, like Try’s, the optimal storage temperature is between +6 and +8 °C. Traditional storage systems relying on outdated methods or external weather conditions often fail to deliver the necessary climate controlled storage. Building a cold room in Norway can cost up to one million NOK (approximately £72,000), and the lack of flexible portable solutions limits options for small producers. Try needed an affordable and adaptable alternative — and found it in the quiet portable air conditioner unit, HP-19. Key Challenges in Potato Storage Potatoes are sensitive to storage conditions, requiring precise control of temperature, humidity, and ventilation.• Too warm → potatoes sprout and soften• Too cold → they freeze and convert starches, affecting flavor and texture➡ The HP-19 enables accurate temperature control and consistent air circulation throughout the entire storage period — ideal for reliable climate controlled storage. HP-19 in real use: Field test in Norway Try installed the HP-19 portable air conditioner unit to test its performance in cooling his potato storage. He was able to adjust the temperature precisely to +6.7 °C — the ideal setting for potatoes intended for frying. He was impressed with how quickly the unit reached the target temperature and how well it maintained that level despite varying outdoor conditions. The HP-19 also kept energy consumption low throughout the trial, offering a clear improvement over previous methods where fluctuations increased both risks and operating costs. The unit includes an effective air conditioner exhaust hose, allowing warm air to be vented out efficiently. Try redirected the exhaust heat to his workshop, giving the device a valuable second function. As summer approaches, Try expects to gain even more insights into the unit’s performance in warmer conditions. However, he already sees great potential for HP-19 — particularly for smaller-scale agricultural operations. Why HP-19 Is a Smart Choice for Agricultural Use More affordable than building a cold roomInstalling traditional cold storage is a major investment. The HP-19 offers a much more economical solution for small and medium-sized farms. Mobile and flexibleThis mobile air conditioner suits both temporary and long-term needs. It can easily be moved between spaces depending on the season or storage demand. Cooling and heating with one unitWhile it cools the storage area, the unit’s warm exhaust air can be redirected to heat another space — maximizing energy use and efficiency. Quick setup and easy to useNo permanent installation is required. The HP-19 is ready to go out of the box — perfect for urgent or seasonal storage needs. Smart control via appEquipped with Wi-Fi and air conditioner remote control via smartphone, users can monitor and adjust temperature in real-time — from anywhere. This ensures better response to changes and more stable conditions. Powerful enough for up to 550 m³The HP-19 can cool or heat spaces up to 550 cubic meters efficiently. Learn more about Rex Nordic’s HP-19 mobile air conditioner. (Need more power? Explore the HP-60 model.)
Increase Efficiency in Your Furniture Workshop with the HP-19 Portable Air Conditioner

Maintaining optimal working conditions in furniture production workshops across the EU is essential for workplace efficiency, employee well-being, and equipment performance. Heat buildup, airborne dust, chemical fumes, and poor ventilation are common challenges caused by machinery operation, sanding, cutting, and surface finishing processes. The HP-19 portable air conditioner from Rex Nordic offers a practical solution without requiring permanent installation or complex ductwork. Common challenges in furniture manufacturing Workshops in the furniture industry often face elevated temperatures, sawdust, and emissions from adhesives and finishing products. These environmental factors can affect both health and productivity: Machinery Overheating: High heat and dust can damage equipment and lead to unplanned downtime. Employee Fatigue: Hot and poorly ventilated spaces reduce concentration and increase accident risk. Poor Indoor Air Quality: Dust particles and chemical vapours pose respiratory and safety hazards. HP-19 – A Ductless Portable Air Conditioner for Industrial Use The HP-19 is designed for demanding industrial environments. As a ductless air conditioner, it is suitable for cooling large production areas or targeting specific workstations, depending on your needs. Cooling and air purification combined The HP-19 can reduce indoor temperatures by up to 15°C while filtering dust and chemical contaminants from the air: General Cooling: Efficiently cools areas up to 550 m³. Spot Cooling: A 10-meter hose allows precision airflow to problem zones. Air Purification: Removes dust and fumes to improve workplace air quality. Compact and easily movable Thanks to its compact design, the HP-19 can be easily relocated within the workspace. It cools only where necessary, helping to conserve energy. Energy-efficient and environmentally conscius The HP-19 combines strong performance with low energy consumption. It uses refrigerants with low Global Warming Potential (GWP), contributing to sustainability goals in European industries: Low Energy Consumption: Reduces energy bills and operating costs. Eco-Friendly Refrigerant: Minimises environmental impact. No Installation Required: Ready to use without permanent setup. A Safer, Healthier Work Environment The HP-19 supports better working conditions by improving air quality and lowering risks linked to heat, dust, and chemical exposure: Cleaner Air: Reduces humidity, airborne particles, and chemical vapours. Quick Start and Easy Operation User-friendly and intuitive, the HP-19 is ideal for busy workshops that need a mobile solution: Simple Controls: Responds quickly to changing temperature needs. Plug-and-Play: Operates instantly with no setup delays. A Smart Choice for Furniture Workshops in Europe Thanks to its effective cooling, air filtration, portability, and energy efficiency, the HP-19 is one of the best portable air conditioners available for furniture production workshops in Europe. Whether you deal with wood dust or chemicals, this unit creates a safer, more comfortable, and productive environment. Discover how the HP-19 portable air conditioner from Rex Nordic can support your workspace and improve working conditions today.
When cooling can’t compromise hygiene – Maitokolmio chose the Rex Nordic HP-60

Temperature control is a critical part of food production — not only for product safety, but also for employee working conditions. Maitokolmio, one of Finland’s most well-known dairy producers, faced a challenge in its large-scale production facilities: rising indoor temperatures were affecting both process efficiency and staff wellbeing. A trusted Finnish food industry company Maitokolmio is a 115-year-old Finnish dairy company that produces and processes milk, quark, cream, and other dairy products. The company operates two production plants in the Ostrobothnia region — one in Toholampi and another in Sievi — and is owned by local milk producers. Maitokolmio employs around 100 people. High temperatures affect productivity and product quality A lot of heat is generated in Maitokolmio’s production areas — both by the processes and the people working there. Tasks such as pasteurization and packaging significantly raise the ambient temperature. Dozens of employees work in these spaces daily, and excessive heat can impact both ergonomic conditions and the precision required in dairy processing. In food production, air conditioning systems must do more than just cool the space — they must be hygienic, reliable, and deliver clean air. “It gets very hot in the production area, and high temperatures can also affect product quality. We needed a powerful solution that would also be suitable for a food production environment,” says Anselmi Kinnunen, Maitokolmio’s Maintenance Manager. HP-60 met every requirement – Now with a HEPA filter Rex Nordic’s HP-60 air conditioning unit has been in use at Maitokolmio’s facility for about a year. The previous version of the unit proved to be a highly effective solution for cooling large dairy production spaces, and the positive experience led the company to invest in a second unit — this time, the latest model equipped with a HEPA filter. Thanks to its high cooling capacity, the HP-60 is capable of lowering the temperature across the entire production hall, even though it is primarily designed as a spot cooler. “The production hall is a large space, and we needed a device with serious cooling power. The HP-60 has fully met our expectations and clearly improved working conditions. The HEPA filter makes it especially well-suited to our type of food production,” Kinnunen notes. Quick installation – Immediate results The unit was installed quickly and required no structural changes or complex setup. Within just a few days, a noticeable drop in temperature was observed in the production space, making it easier to work through the hottest process phases. The unit has been a reliable part of daily operations from the start. HP-60 – Designed for demanding production environments The HP-60 offers significant advantages for food industry use: Powerful cooling to maintain optimal conditions, even in large production areas HEPA filter to ensure air cleanliness in hygiene-sensitive environments Dehumidification capacity up to 197 liters per day, helping prevent moisture-related issues Directed cooling, allowing airflow to be targeted exactly where it’s needed Proven solution for the confectionery industry as well The HP-60 has also proven valuable in the confectionery sector, where precise cooling and clean air are essential to sensitive manufacturing processes. Many confectionery products are made from temperature-sensitive ingredients such as chocolate, fats, and fillings that respond quickly to fluctuations in room temperature. Additionally, hygiene requirements in confectionery production are just as strict as in dairy — processes must be clean, controlled, and consistent. The HP-60’s strong cooling power, HEPA filter, and ability to deliver targeted airflow makes it an excellent choice for such environments. The unit is already in use by several companies in the industry that face similar demands for precise environmental control. A cost-effective and sustainable choice One of the key advantages of the HP-60 is its portability and significantly lower cost of implementation compared to fixed air conditioning systems. Installing a permanent solution would have required substantial investment and changes to the facility infrastructure — the HP-60 provided an immediate fix without compromises in performance or hygiene. In addition, the unit supports Maitokolmio’s commitment to sustainability — its energy-efficient operation helps reduce both emissions and operating costs.
Portable air cooler to keep conference halls comfortable – even during summer heatwaves

When summer heatwaves hit, indoor events can quickly become uncomfortably warm—especially in spaces with minimal insulation and no proper air conditioning. High temperatures turn conference halls into unbearably hot places, making it difficult for attendees to focus and enjoy the event. This challenge is easily solved with the REX25000 evaporative cooler, which transforms even the hottest venues into refreshing environments – ensuring a comfortable and productive experience for everyone. An affordable cooling solution for large halls and buildings Older buildings and conference halls, especially those with steel structures with poor insulation, are highly prone to overheating. Sunlight heats the roof and walls, radiating warmth into the interior. Soon, the space feels suffocating, and the atmosphere draining for attendees. While traditional air conditioning is often too costly or impractical for large spaces, the REX25000 evaporative cooler shines as a cost-effective, efficient, and hassle-free solution designed specifically for these challenges. Why choose the REX25000 evaporative cooler for large spaces? Significant temperature reduction Effectively lowers indoor temperatures by 4°C to 12°C when outdoor conditions exceed 22°C—keeping your event space comfortably cool even during the hottest summer days. High airflow capacity With an impressive 25,000 m³/h airflow, it provides efficient cooling and even air distribution throughout large areas. Portable and convenient Easy to move—cool exactly where needed. Whether it’s the main hall, backstage, or breakout rooms, REX25000 offers flexibility without the need for fixed installations. Eco-friendly and cost-effective Using only water, with no refrigerants or complicated installation, the REX25000 is a low-cost, environmentally responsible alternative to traditional air conditioners. Hygienic cooling with UVC light Equipped with an integrated UVC light sterilizer that purifies the circulating water—eliminating germs and viruses and ensuring clean, healthy air. No water mist, just clean air Unlike some cooling systems, the REX25000 produces a cool breeze without water mist, making it safe for electronics, stage equipment, and important documents. Durable and low maintenance Backed by two-year warranty, easily available spare parts, and minimal maintenance needs–the REX25000 is built to last. Real-world tested — crowds naturally gather around our coolers After touring countless outdoor and indoor events, one thing we see time and time again is how people instinctively gather around our coolers. Exhausted by the heat, attendees seek relief—and the REX25000 delivers. It creates a natural cooling, helping everyone stay refreshed, engaged, and focused. Simple setup, big impact Forget about complicated installations. The REX25000 only needs a power outlet and a water source. Its 170 L water reservoir provides extended cooling without frequent refills, or you can connect it directly to a continuous water supply for worry-free operation. Thanks to its energy-efficient design, the REX25000 keeps operating costs low while offering powerful cooling—without the use of harmful refrigerants. Looking for a cooling solution? Whether you’re planning a conference, managing a concert, or hosting any large event, the REX25000 portable air cooler offers a smart, eco-friendly, and budget-friendly solution that keeps everyone comfortable—no matter the heat outside. Contact us today to learn more or get a personalized quote. Let’s make your next event refreshingly comfortable!
BX e-Generator – the sustainable replacement for diesel generators

In today’s world, where industries, infrastructure, construction sites, event management, and emergency preparedness demand reliable, clean, and quiet power solutions, the BX e-Generator stands out as an innovation. It’s a next-generation portable electric generator designed to meet diverse energy needs across all professional environments. Rex Nordic’s BX e-Generator offers off-grid power solutions that reduce emissions, cut fuel costs, and deliver silent, emission-free energy where diesel generators fall short. Whether you need power for an industrial operation, a rail construction site, an urban infrastructure project, or a backup power supply for an emergency setup, the BX e-Generator provides efficiency, sustainability, and cost-effectiveness. Here’s why you should consider the BX e-Generator to complement or replace diesel generators Eco-friendly and cost-effective power management The BX e-Generator significantly reduces the runtime of diesel generators by cutting operational costs by up to 80% in fuel savings. Unlike traditional generators, it uses 99% recyclable AGM battery technology to store energy, providing clean and efficient power with a lower environmental impact—without the fire hazard and charging limitations of lithium batteries. Ideal for: Construction & infrastructure: Supports power tools, cranes, lighting, and mobile offices with low-emission energy. Urban & industrial sites: Perfect for tunnel work, manufacturing plants, logistic centers, and warehouses, where quiet, clean energy is a priority. Off-grid & remote locations: Ensures a reliable power source in areas without grid access, such as wind farms, railway projects, and emergency shelters. Peak shaving: smarter energy use The BX e-Generator helps businesses manage energy demand efficiently. By storing energy and supplying it during peak hours, it lowers reliance on fossil fuels and prevents costly demand spikes. It’s particularly useful for: Tower cranes & heavy machinery with fluctuating energy needs. Tunneling, rail, and road constructions, where steady power flow is essential. Silent and emission-free operation Traditional generators are noisy and polluting. The BX e-Generator runs under 45 dB, making it quieter than a refrigerator and completely emission-free. Best suited for: Festivals & outdoor events: Provides clean, silent power without disturbing the crowd. Construction sites in urban areas: Ensures low-noise, eco-friendly operation that meets regulatory standards. Emergency preparedness & crisis power: Delivers instant backup power without ventilation or fuel storage requirements. Multiple charging options for diverse needs The BX e-Generator adapts to different charging methods; this versatility makes an effective energy storage system for any setup. Solar panels Diesel generators Electricity grid Smart automation selects the most cost-effective power source available. Whether you’re powering a film set, an industrial facility, or an off-grid construction site, this portable generator ensures uninterrupted power while optimizing energy costs. Built to last – reliable in any environment The BX e-Generator is designed for tough environments and has an IP54 rating, making it dust- and waterproof. It performs reliably in extreme temperatures, wet conditions, and remote locations where traditional mobile generators struggle. Its durability makes it good choice for: Rail, road, and tunnel works that require continuous off-grid power. Wind and solar farms. Warehouses, logistics centers, and large-scale manufacturing plants. Emergency response teams, military bases, and remote aid operations. With forklift and crane compatibility, this portable generator is easy to move between job sites. Its plug-and-play functionality means no complex setup—just power on and go. Sustainability and cost savings One of the BX e-Generator’s biggest advantages is its ability to drastically reduce fuel consumption and eliminate costly grid connections. Cuts fuel costs by up to 80% compared to diesel generators. Fewer moving parts = lower maintenance costs on the BX e-Generator, ensuring long-term reliability with minimal servicing. Extends diesel generator lifespan by reducing work cycles, leading to lower maintenance costs and even greater savings over time. Compatible with solar panels for an even smaller carbon footprint. By eliminating excess fuel consumption, reducing emissions, and high maintenance costs, the BX e-Generator is the smart choice for professionals looking for an efficient, economical, and sustainable power solution. Efficient, reliable, and ready to go The BX e-Generator is a next-generation power solution designed for modern industries, construction, and event professionals. Contact us today to discover how the BX e-Generator can optimize your energy strategy!
Airrex heaters – An eco-friendly choice with renewable diesel

Airrex heaters are the perfect choice for those looking to reduce their carbon footprint without sacrificing performance. These heaters operate efficiently on both traditional diesel and fossil-free renewable diesel, ensuring 100% fuel efficiency and low fuel consumption. Summary Airrex heaters run on both traditional diesel and fossil-free renewable diesel, reducing carbon emissions. Innovative technology maximizes fuel energy use, ensuring low fuel consumption. In many cases, renewable diesel is a more eco-friendly heating option than electricity, especially in regions where power is generated from fossil fuels. Using renewable diesel for heating is a tangible step toward a fossil-free future, and Airrex heaters support this transition without compromising performance. Efficient and clean heating without emissions Airrex heaters utilize advanced fuel-efficient technology, ensuring all fuel energy is fully utilized. Their three-phase system directs infrared heat waves straight into the surrounding area. This method not only saves energy but also enables precise heat targeting with reflector structures. As a result, heating with Airrex is both economical and environmentally friendly. Renewable diesel – The environmentally friendly heating solution Diesel often gets unfairly associated with fossil fuels, yet modern diesel technology has evolved significantly, allowing for clean and efficient use of fossil-free fuels like renewable diesel. This sustainable fuel is a viable alternative for both heating and transportation, offering a significant reduction in environmental impact. Airrex heaters are at the forefront of this progress. With cutting-edge product development, Airrex heaters function seamlessly with renewable diesel, which is not always the case with conventional diesel heaters. When using renewable diesel, Airrex heaters significantly reduce emissions compared to electric heating systems—especially in countries where electricity production still relies heavily on fossil fuels. This makes renewable diesel an eco-friendly alternative with a lower environmental impact. Electricity vs. renewable diesel in heating Comparing renewable diesel to electric heating, renewable diesel is often the more sustainable choice. For example, in the EU, the average CO₂ emissions from electricity production range between 200–300 g CO₂/kWh, meaning that electric heating can have a higher carbon footprint than a fuel-burning heater using renewable diesel. Airrex heaters not only reduce dependence on fossil fuels but also offer significant energy savings. This makes them an ideal heating solution for large spaces requiring constant and efficient heating, such as garages, industrial halls, warehouses, and construction sites. A fossil-free future Reducing fossil fuel consumption is a key part of building a sustainable future. Using renewable diesel for heating is a tangible step towards a fossil-free world, and Airrex heaters make this transition easy—without compromising performance or usability. The benefits of renewable diesel extend beyond emissions. Its production supports local circular economies, as raw materials can be sourced locally, and manufacturing can be conducted regionally. This not only supports ecological goals but also benefits local economies. Airrex heaters exemplify how modern technology can drive the shift toward a more sustainable future. Airrex heaters are next-generation solutions for eco-friendly and cost-effective heating. They are the ideal choice for businesses that prioritize sustainability, efficiency, and responsibility. Discover our selection of diesel heaters today! Renewable diesel vs. biodiesel – Which is better? Renewable diesel (HVO) is technically superior to biodiesel (FAME, RME) due to: Compatibility: Works directly with existing diesel engines Better cold-weather performance Greater emission reductions More consistent fuel quality, regardless of raw materials Biodiesel is cheaper to produce but comes with technical issues and lower environmental benefits. EU regulations limit biodiesel blending in diesel fuels to 7%, whereas renewable diesel has no blend restrictions and can be used in pure form. We recommend using only renewable diesel in Airrex heaters. Biodiesel (FAME, RME) must not be used.
Efficient and Environmentally Friendly Cooling for Professional Use: REXNORDIC cooler

REXNORDIC evaporative coolers are excellent choices for professional use due to their efficiency, environmental friendliness, and low operating costs. This article discusses why an evaporative cooler is a good choice for professional use and where it can be used. Operating Principle of Evaporative Coolers Evaporative coolers operate on a simple yet effective principle: they use water evaporation to cool the air. As air passes through a wet filter, the water evaporates and absorbs heat from the air, lowering the air temperature. This process is highly energy-efficient as it consumes significantly less electricity than traditional air conditioning units. Benefits in Professional Use Energy Efficiency and Cost Savings: The Rex Nordic Ecocooler is a highly energy-efficient cooler. In professional environments where cooling is continuous, the energy savings can be significant, reducing overall costs. Environmental Friendliness: Unlike traditional air conditioners, evaporative coolers do not use environmentally harmful refrigerants. This makes them an ecologically sustainable option that reduces the carbon footprint. Ease of Use and Low Maintenance: The Rex Nordic Ecocooler is designed to be user-friendly and requires minimal maintenance. The device only needs regular cleaning and water refills, reducing downtime and maintenance costs. Improves Working Conditions: Evaporative coolers not only cool the air but also improve air quality by adding humidity. This is particularly beneficial in dry and dusty environments such as warehouses and industrial halls, where employee comfort and health can be significantly improved. Additionally, the Rex Nordic Ecocooler is equipped with built-in UV light that destroys all bacteria and viruses. Applications The Rex Nordic Ecocooler is suitable for various professional environments: Industrial Halls and Warehouses: Large and open spaces like industrial halls and warehouses benefit significantly from evaporative cooling. The Ecocooler can efficiently cool large areas, improving working conditions and increasing productivity. Construction Sites: On construction sites, working conditions can be challenging due to high temperatures and dust. An evaporative cooler can help keep the working area cooler and less dusty, enhancing worker comfort and safety. Agriculture and Greenhouses: Greenhouses and farms benefit from evaporative cooling as it helps maintain optimal temperature and humidity levels for the well-being of plants and animals. Events and Outdoor Spaces: At outdoor events such as festivals or sports events, evaporative coolers can provide comfort to large crowds. The Rex Nordic Ecocooler is portable and easy to install, making it an ideal solution for temporary cooling. Summary The Rex Nordic Ecocooler is an excellent choice for professional use due to its energy efficiency, environmental friendliness, ease of use, and versatile applications. Whether it’s an industrial hall, construction site, farm, or outdoor event, the Rex Nordic Ecocooler offers a reliable and cost-effective cooling solution that improves working conditions and reduces operating costs.
How Professional Evaporative Coolers Work?

Evaporative coolers are an essential part of modern cooling technology, especially in industrial and other large-space cooling applications. Their advantages include energy efficiency and environmental friendliness compared to traditional air conditioning systems. This article examines the operating principle, applications, and benefits of evaporative coolers, as well as the technical aspects to consider when using them. Operating Principle of Evaporative Coolers Evaporative coolers utilize the evaporation process of water to cool the air effectively. This is based on a physical phenomenon where water evaporates and absorbs heat energy from the surrounding air, leading to a decrease in air temperature. Humidification and Heat Transfer Water evaporates when exposed to an airstream, and this process absorbs heat from the air, cooling it down. Coolers use special pads designed to maximize the surface area for water evaporation. These pads are often made of cellulose or plastic, which are hygroscopic and provide a large evaporative surface. Air flows through the pads via a fan, where it encounters water. The water evaporates, absorbing heat energy from the air, thus cooling it. Energy Consumption and Efficiency The energy consumption of evaporative coolers is significantly lower compared to traditional mechanical cooling systems because the process uses natural water evaporation and does not require substantial amounts of electrical energy. The efficiency of these systems depends on the ambient temperature and humidity. They work best in dry and hot conditions where the air’s moisture content is low, as this makes water evaporation most efficient. Operational Principle Adiabatic Cooling: Air is cooled through an adiabatic process where its temperature drops as it becomes humidified. This means that the air’s thermal energy is used for water evaporation without an external energy source. Ventilation and Pressure: In the cooler, air passes through the pads via a fan. The air flowing through the pads encounters moisture that evaporates and cools the air. The fan’s role is critical as it ensures sufficient airflow through the pads and guarantees uniform cooling. Water Circulation: In evaporative coolers, water circulates continuously. Water is pumped to the top of the pads, from where it flows down and evaporates due to the airstream. The recirculation system ensures even water distribution and optimizes the cooling process. Applications in Professional Use Evaporative coolers are widely used across various industries and other large-space cooling applications where efficient and cost-effective cooling is needed. Industrial Facilities Metal Industry: In hot factory halls where temperatures can rise extremely high, evaporative coolers provide an efficient cooling solution that helps keep the working environment tolerable and safe. Automotive Industry: Assembly lines and paint shops in car factories benefit from a cooler working environment, which improves worker efficiency and reduces errors. Food Industry: Evaporative coolers are ideal for cooling large storage and production areas where temperature control is critical to maintaining product quality. Data Centers Data centers require continuous and efficient cooling to prevent equipment from overheating. Evaporative coolers offer an energy-efficient alternative that can significantly reduce cooling costs in data centers. Using adiabatic cooling, data centers can also reduce their carbon footprint, which is increasingly important as environmental regulations tighten. Agriculture Greenhouses: Evaporative coolers help maintain optimal growing conditions, improving crop yields and growth rates. Cooler air reduces plant stress and enhances their resistance to diseases. Animal Shelters: Animal welfare improves in cooler conditions, leading to better health and productivity. This is especially important during the summer months when heat stress can negatively affect animal well-being. Advantages and Challenges Evaporative coolers offer many advantages. Advantages Energy Efficiency: Evaporative coolers use significantly less electrical energy compared to traditional cooling systems because they rely on the natural evaporation process. Environmental Friendliness: Since the system only uses water and air for cooling, its environmental impact is minimal, and the carbon footprint is small. This makes them an attractive option for organizations aiming to reduce their environmental impact. Cost Savings: Lower energy consumption and simple technology mean lower operating and maintenance costs compared to complex mechanical cooling systems. Technical Considerations and Design Portable evaporative coolers are highly convenient and flexible solutions for various professional cooling needs. Their technical design and use require special attention to the following aspects: Components and Materials Pads: The pads are the central part of the cooler responsible for water evaporation. They are often made of cellulose or plastic, providing a large evaporative surface and withstanding moisture and mechanical wear. Fans: Powerful fans ensure sufficient airflow through the pads. The performance of the fans directly affects the efficiency of the cooler. Water Systems: Water systems pump water to the top of the pads, from where it flows down and evaporates due to the airstream. The systems include filters and pumps that ensure water circulation and cleanliness. Device Placement Airflow Control: Optimal airflow and ventilation are essential to maximize cooling. Portable coolers should be placed to draw in as much dry and hot air as possible for the most effective evaporation. Water Source and Quality: A clean and adequate water source is vital for the system’s operation and longevity. Water quality affects the durability and efficiency of the pads and water systems. Considering Portability Durable Construction: Portable evaporative coolers must be durable and sturdy enough to be easily moved to different locations. This means strong frame materials and well-protected components. Practical Wheels: Large wheels enable easy movement of the device and are designed to withstand various floor materials and surfaces. Easy Connectivity: Coolers are easy to connect to electrical and water sources in different locations. They have practical connections and sufficiently long cables and hoses. Impact of UV Light UV light is used in evaporative coolers to improve water quality and prevent bacterial growth. Water Disinfection: UV light kills microorganisms and bacteria in the water, reducing biofilm and slime formation on the pads. This improves the system’s hygiene and reduces maintenance needs. Pad Cleanliness: UV light helps keep the pads free from biological impurities, enhancing their evaporative efficiency and extending their lifespan. Cost Savings: Using UV light reduces the need for chemical cleaning agents and improves the system’s