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!
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.
Improve productivity in Your furniture workshop with the HP-19 portable air conditioner
Maintaining comfortable working conditions in furniture production workshops is important for productivity, safety, and equipment reliability. Indoor heat, dust, chemical fumes, and limited air circulation are common issues resulting from machinery operation, sawing, sanding, and finishing processes. These conditions can cause machinery overheating, employee fatigue, lower productivity, and workplace accidents. Rex Nordic’s HP-19 portable air conditioner addresses these problems by providing effective cooling and air purification without complex installations or permanent ductwork. Typical challenges in furniture workshops Furniture manufacturing workshops often face heat, dust, and chemical emissions from woodworking machines, assembly lines, finishing materials, and daily operations. These conditions impact employee comfort and pose significant risks: Machinery Overheating: Warm temperatures and dust can cause breakdowns and shorten the lifespan of woodworking and manufacturing equipment. Employee Fatigue: Heat and poor air quality cause discomfort, reducing employee concentration and increasing accident risks Poor Air Quality: Dust, airborne particles, and chemical fumes from finishing materials negatively affect worker health. Introducing the HP-19 portable air conditioner The HP-19 from Rex Nordic is designed specifically for industrial environments. Unlike traditional fixed systems, this ductless portable air conditioner can cool specific areas or entire spaces as needed, making it suitable for furniture production facilities. Cooling and air purification capabilities The HP-19 portable air conditioner effectively reduces indoor temperatures by up to 15°C. Its built-in air purification system also filters dust, airborne particles, and chemical fumes, creating comfortable and safe working conditions: General Area Cooling: Cools large spaces up to 550 m³, quickly improving overall conditions. Targeted Spot Cooling: Equipped with a 10-meter duct to deliver precise cooling exactly where required. Air Purification: Captures and filters dust and chemical contaminants, enhancing indoor air quality and protecting employee health. Mobility and convenience The portable design allows the HP-19 to easily move between workstations or workshop areas. Its mobility ensures cooling and air purification exactly when and where needed, reducing unnecessary energy use. Energy efficiency and environmental responsibility The HP-19 delivers powerful performance with minimal energy consumption, keeping operational costs low. Additionally, it uses refrigerants with low Global Warming Potential (GWP), minimizing environmental impact: Low Energy Consumption: Saves on energy costs while supporting environmental sustainability. Eco-Friendly Refrigerants: Utilizes refrigerants with low GWP to limit environmental impact. Cost-effective Setup: Portable, ductless design avoids costly installation and maintenance. Enhancing employee comfort and safety Employee comfort directly influences productivity. The HP-19 ensures workers remain comfortable, reduces heat-related fatigue, and minimizes risks associated with dust and chemical exposure: Better Air Quality: Reduces humidity and purifies air from dust and chemical contaminants, significantly improving workplace health and safety. Simple operation and immediate use User-friendly operation is essential in busy workshops. The HP-19 portable air conditioner offers intuitive controls, quick setup, and immediate cooling and air purification. Minimal training is needed, making it accessible for all employees: Easy Controls: Quickly responds to temperature changes. Immediate Deployment: Ready for use instantly, reducing downtime. A top portable air conditioner choice in the UK With its effective cooling, air purification, portability, energy efficiency, and eco-friendly features, the HP-19 portable air conditioner is an ideal solution for industrial applications. Whether your workshop struggles with heat, dust, or chemical fumes, the HP-19 supports a comfortable, safe, and productive environment. See how the HP-19 portable air conditioner from Rex Nordic can enhance your workshop environment, improving efficiency, safety, and productivity today.
Maintaining the Right Temperature in Potato Storage with a Mobile Air Conditioner
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.)
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.
Cooling the Hottest Corners of Metalwork with HP-19 Mobile Air Conditioner
In the heart of any metalworking facility, heat is part of the job. Whether it’s arc welding, plasma cutting, or grinding, these tasks generate intense, localised heat, far beyond what general ventilation systems can handle. And while full-hall cooling might seem like a solution, it often proves wasteful and ineffective when the real challenge lies in just a few critical hotspots. That’s why many metal industry professionals are turning to targeted, mobile cooling, and specifically to the Rex Nordic HP-19. When General Cooling Falls Short Walk into any busy fabrication shop in summer and you’ll feel it immediately: the sharp contrast between the air near the ceiling fans and the sweltering temperatures next to a welding torch. High temperatures not only affect worker comfort and focus but also put sensitive equipment at risk. And yet, retrofitting a full AC system is costly, slow, and often unnecessary for the rest of the hall. The HP-19 approaches the problem differently. It’s not designed to cool an entire building, just the places where people and machines need it most. With a compact footprint, wheels for easy movement, and a powerful internal compressor, it delivers cold air exactly where it’s aimed – no ductwork or installation required. Cooling with Precision One of the most important features of the HP-19 is its ability to focus airflow directly at a workstation. Operators can position the unit within a few metres of a welder, plasma cutter, or CNC machine and direct the cool air precisely with built-in nozzles or optional ducting. In practice, this can lower the ambient temperature around the operator by up to 15°C – enough to make a real difference in concentration, endurance, and safety. And unlike simple fans, this unit actually conditions the air, removing heat and filtering it in the process. Built for the Realities of Industry The HP-19 isn’t a plastic consumer product. It’s built for rough environments, with a steel casing, rugged wheels, and components designed for long operating hours. It connects to a standard 230 V socket and weighs around 85 kg, heavy enough to stay put, but light enough to move when needed. Inside, it’s a 4-in-1 machine: cooling, heating, dehumidifying, and purifying the air. This means it’s useful year-round, not just in peak summer. And thanks to its built-in filters, it also reduces smoke, metal dust, and other airborne particles, particularly important in welding bays where fumes are a constant concern. Efficiency That Pays Off At 5.6 kW of cooling capacity and only 2.3 kW of power consumption, the HP-19 is surprisingly energy-efficient. It uses a low-GWP refrigerant, making it a more environmentally responsible option than many traditional systems. Combined with its focused output, that means you’re not paying to cool empty space, just the work that’s actually happening. Adaptable to Any Workshop Exhaust air can be routed out of the space using a flexible hose or simply allowed to disperse if the building is well-ventilated. This makes the HP-19 incredibly flexible. There’s no installation delay, no major changes to infrastructure, and no need to overthink where it fits. You can plug it in and start cooling in minutes. It’s a straightforward answer to a complex industrial problem. Trusted by Industrial Operators Across Europe The HP-19 is part of the new-generation range based on the long-standing Airrex HSC series, a name already well known in construction and agricultural sectors. Its larger sibling, the HP-60, offers even more power for bigger areas, but for many mid-sized workshops and welding stations, the HP-19 hits the sweet spot between performance, portability, and cost. Want to cool down your hottest workstation? Contact Rex Nordic to learn more. See how targeted mobile cooling can change the way your team works – no installation, no hassle.
Airrex diesel heater – lasting warmth and proven savings
Good heating isn’t just about raw power – it’s about efficiency, comfort, and control. Airrex diesel infrared heaters have proven that steady warmth doesn’t have to mean high running costs. The following real-world examples show how Airrex keeps large workshops, warehouses and industrial spaces warm throughout the winter – while keeping fuel use impressively low. Proven results with infrared heating: only 2.5 litres per day Many people are surprised to discover how little fuel Airrex diesel heaters actually use. They are designed to heat spaces evenly and efficiently, without wasting energy where it isn’t needed. Grels Ström, a retired technical expert from Rex Nordic, uses an Airrex heater in his 480 m³ warehouse. The building has ceiling insulation, plasterboard walls, and a concrete floor – a structure that holds heat extremely well. Previously, the space was heated with direct electric heating, but switching to diesel has cut both consumption and costs dramatically. Ström explains: “At first, fuel use can be a little higher. It usually takes about a week or so for consumption to settle. Infrared heat is absorbed directly into the structures, and once they’re properly warm, surprisingly little fuel is needed to keep the temperature steady.” He maintains an indoor temperature of +15 °C even when it’s around 0 °C outside, and daily fuel consumption averages just 2.5 litres of diesel. His Airrex heater has run reliably without any issues or need for servicing. A brief period of higher consumption at the start is perfectly normal – the building materials often contain moisture that needs to dry out first. Once they’re dry, the system reaches maximum efficiency. This is where Airrex infrared technology excels: the heat is stored in the structure and released steadily back into the space. After that, only short heating cycles are needed to maintain comfort – and the savings are clearly reflected in the fuel bill. Smart thermostat keeps consumption under control Every Airrex infrared heater is equipped with an intelligent built-in thermostat that keeps fuel use to a minimum. The unit starts and stops automatically to maintain the desired temperature. Diesel is metered precisely – only as much as needed and not a drop more – which keeps consumption extremely low. In everyday use, the heater runs independently. Once the building’s structures are warm, the unit maintains a steady temperature with short operating cycles. There’s no need for constant adjustment – the thermostat does it all automatically. Unlike traditional fan heaters, Airrex units don’t blow hot air towards the ceiling or outside when doors open. Infrared heat is directed straight into walls, floors, and machinery, which absorb and store the warmth. As a result, energy use stays exceptionally low, and if a door is opened, the stored heat quickly restores the indoor temperature. Long-term savings with Airrex diesel heaters Markku Ojanen has experienced the same results first-hand. He heats a 360 m² insulated hall, three metres high, which used to rely on radiators and fan heaters. The old system consumed around 2,500 litres of oil each year. After switching to an Airrex AH-300 diesel heater, the difference was immediate. In the first winter alone, fuel use dropped to about 1,000 litres per year – less than half of what it was before. He keeps the hall at +9–10 °C, raising it to +13 °C while working. Over ten years, the savings have totalled around £8,500–£9,000, and the same heater is still operating flawlessly today. “Maintenance has always been done on time, but it’s never needed a single repair,” Ojanen says. “It just keeps running.” Sustainable warmth you can feel Airrex infrared heating works on a simple but powerful principle: instead of heating air, it radiates warmth directly into surrounding surfaces. Floors, walls and equipment absorb the heat – just like sunlight warms your skin on a cool day. Once these surfaces are warm, they release the heat evenly back into the room, creating a consistent indoor temperature. This stored warmth acts as a natural heat buffer, which keeps fuel consumption low after the first weeks of use. The heater only runs as much as is needed to maintain the balance. That’s the key difference between infrared and traditional fan heaters. Infrared heat doesn’t escape when doors open or air moves. The stored heat within the structure quickly restores the temperature, keeping warmth where it’s needed and savings ongoing. Site 1 – Warehouse Type: Warehouse 480 m³ Structure: Concrete floor, insulated ceiling, plasterboard walls Previous heating: Direct electric New solution: Airrex diesel infrared heater Maintained temperature: +15 °C in mild winter conditions Average daily fuel consumption: ~2.5 litres of diesel Maintenance: Reliable operation, almost no servicing required Savings: Considerably lower consumption compared with the previous system Site 2 – Industrial hall Type: Insulated hall 1 080 m³ (360 m², 3 m height) Previous system: Radiators + fan heaters Previous fuel use: ~2,500 litres of oil per year New solution: Airrex AH-300 diesel heater Current fuel use: ~1,000 litres per year Years in use: 10 years Estimated savings over 10 years: £8,500–£9,000 Reliability: Same unit still operating perfectly, no repairs needed
Warmth that stays – Airrex heater keeps the workshop comfortable all winter
Keeping a 244 m² car repair workshop warm in winter is no simple job, especially with six-meter-high ceilings, concrete walls, a partly insulated sheet-metal roof, and a door that opens constantly. In Finnish winter conditions, heat escapes fast. With an Airrex diesel space heater, the indoor temperature stays at a steady +16–17 °C throughout the winter. Janne Mukkala, owner of JM-Konehuolto Oy from Finland, has used his Airrex for six years – and wouldn’t switch to anything else. “The heater has worked flawlessly. When the door opens and the temperature drops, it starts automatically and brings the heat back quickly. Reliability is what I value most.” A fuel-powered heater that supports district heating in freezing weather Before installing the Airrex unit, the workshop temperature fluctuated constantly during the winter. District heating alone wasn’t enough to keep the workspace warm, especially when the overhead doors were opened in sub-zero conditions. The Airrex diesel heater provided the missing boost. “Now we can open the door whenever we need to without losing the indoor warmth,” says Mukkala. “Airrex reacts quickly to temperature changes and supports the district heating really well.” For garages and workshops where effective, clean heat is needed without complex installation, Airrex is an excellent choice. At JM-Konehuolto, the heater runs daily throughout the winter, sometimes overnight. Airrex – easy to use and built to last The Airrex infrared heater has been operating for six years without a single service requirement. “I’ve never had to do anything to it – it just works.” Airrex technology is designed with simplicity in mind. Thanks to its advanced oil-burning system and clean combustion, the heater is almost maintenance-free. It runs quietly and without odour, smoke or fumes inside the workshop. For best performance, we still recommend replacing the annual service kit to maintain efficiency and long-term reliability. A satisfied user – warm workshop, minimal effort Simple, reliable, and economical – that’s how many Rex Nordic customers describe the Airrex heaters. “It has been the most reliable heating solution we’ve ever had,” says Mukkala. Airrex complements district heating system perfectly, keeping the workshop warm all winter, even with imperfect insulation and frequent door openings. Who is the Airrex diesel space heater for? The Airrex diesel space heater is designed for demanding environments where consistent warmth, fast recovery, and ease of use matter. It performs exceptionally well in garages, repair shops, warehouses, and workshops – especially in spaces where doors open frequently and indoor heat is easily lost. Thanks to its mobility, the unit can be moved wherever warmth is required, making it a practical solution for busy work areas with changing layouts. It’s also a reliable option in locations with limited electrical power, providing steady, clean heat even when traditional heaters struggle to keep up. Facts: JM-Konehuolto Oy, Finland Type of business: Car repair workshopFacility size: 244 m² | Height 6 mStructure: Concrete walls and floor, partially insulated metal roofHeating solution: District heating + Airrex AH-800i diesel space heaterUsage: Daily during winter, occasionally overnightIn operation: 6 years | No maintenance requiredMaintained temperature: +16–17 °C