SumAir R290 Heat Pump Successfully Passes High-Temperature CNAS Lab Test, Ensuring Reliable Hot Water Outlet at 35°C Ambient Condition

‌[Guangdong, China] – [March, 19th., 2025]‌ – SumAir, a company heading for global leader in innovative thermal pump water heater/chiller solutions, today announced a significant breakthrough in high-temperature performance validation for its eco-friendly R290 residential heat pump systems. Rigorous testing conducted in a CNAS-accredited laboratory has confirmed the system’s stable operation under 35°C ambient air temperatures while heating a full 150L pressured hot/chilled water storage tank from regular water temperature up to 70degree, effectively addressing real-world challenges reported in high-temperature regions such as Israel and alike Middle East countries. This milestone underscores SumAir’s commitment to delivering energy-efficient, climate-resilient hot water solutions for global markets.

‌Real-World Challenge Meets Lab-Perfected Innovation on SumAir R290 Thermal Pump Water Heater/Chiller‌

Recent feedback from customers in Israel highlighted operational hurdles faced by conventional thermal pumps in extreme climates: units frequently triggered high-pressure alarms under 35°C+ ambient conditions, leading to interrupted hot water supply. To address this, SumAir’s R&D team replicated the exact scenario in a controlled CNAS-certified lab environment, testing its R290-based residential thermal pump water heater/cooler paired with a 150L pressured hot water storage tank.

Over 48 hours of continuous operation, the system demonstrated flawless performance:

• ‌Zero high-pressure alarms‌ despite sustained 35degree ambient temperatures.
• ‌Consistent water heating‌ to 55°C with an average COP (Coefficient of Performance) of 4.2.
• ‌Stable compressor and refrigerant gas flow‌, validated by real-time pressure and temperature monitoring.

“This test wasn’t just about solving a technical issue—it was about proving our dedication to reliability in the harshest conditions,” said Mr. Bai, Chief Technology Engineer in SumAir Energy Technology Co., Ltd. “The results reaffirm that our R290 systems are engineered to excel where others struggle.”

‌Why SumAir Thermal Pump Water Heating/Cooling R290 Refrigerant Gas Delivers Superior High-Temperature Performance‌

The choice of R290 (propane) as a refrigerant plays a pivotal role in the system’s resilience. Unlike traditional refrigerants, R290 boasts:

1. ‌Low Global Warming Potential (GWP=3)‌: Aligns with global sustainability goals, including the EU F-Gas Regulation.
2. ‌Exceptional Thermodynamic Efficiency‌: Maintains stable pressure even at elevated ambient temperatures, reducing compressor strain.
3. ‌Faster Heat Transfer‌: Enables quicker water heating cycles while consuming 30% less energy than conventional R134a systems.

Coupled with SumAir’s proprietary ‌Adaptive Pressure Control Algorithm‌, the system dynamically adjusts compressor speed and fan operation to prevent pressure buildup—a critical factor in avoiding shutdowns during heatwaves.

‌CNAS-Certified Testing on SumAir R290 Air Source Heating Pump : A Benchmark for Credibility‌

The evaluation was conducted in SumAir’s state-of-the-art CNAS (China National Accreditation Service for Conformity Assessment)-accredited laboratory, ensuring internationally recognized testing standards. Key parameters validated include:

• ‌Ambient Temperature Control‌: Precision simulation of 35°C with ±0.5°C accuracy.
• ‌Pressure Stability‌: Refrigerant circuit pressures maintained within safe thresholds (discharge pressure < 28 bar).
• ‌Energy Efficiency‌: COP values exceeded EU Ecodesign Directive 2021 requirements.

“CNAS accreditation guarantees that our testing protocols meet global benchmarks,” noted Mr. Huang, “Customers can trust these results as a true reflection of field performance.”

‌Meeting High-Temperature Markets with SumAir R290 Air Energy Heated Pump Water Geyser/Cooler‌

With climate change driving extreme weather, regions like the Middle East, Southern Europe, and Southeast Asia increasingly demand heat pumps capable of uninterrupted operation in scorching conditions. SumAir’s R290 system addresses this gap with:

• ‌Wide Operating Range‌: Performs efficiently at ambient temperatures from -15°C to 43°C.
• ‌Smart Diagnostics‌: IoT-enabled fault detection alerts users and service teams preemptively, minimizing downtime.
• ‌Long-Term Durability‌: Corrosion-resistant components and a 10-year compressor warranty.

The 150L tank configuration tested is ideal for households of 3–5 people, offering daily hot water savings of up to 70% compared to electric water heaters.

‌Strategic Implications on SumAir R290 On/Off/”DC Inverter” Heat Pump for Global Sustainability‌

By resolving high-pressure alarms in extreme heat, SumAir positions its R290 heat pumps as a viable, future-proof alternative to fossil fuel-dependent water heaters. This advancement supports global decarbonization efforts, particularly in sunbelt regions where solar energy pairs seamlessly with heat pump efficiency.

“Our Israeli client’s feedback was instrumental in refining this solution,” added Aaron C.. “We’re now ready to scale this technology to markets where reliability under heat stress is non-negotiable.”

‌About SumAir‌

SumAir is a pioneer in clean energy HVAC solutions, specializing in R290 and CO2 refrigerant gas technologies. With 15+ years of expertise, our products serve residential and commercial clients in over 50 countries, emphasizing innovation, sustainability, and user-centric design. All systems comply with IEC, EN, and AHRI standards, backed by a global network of certified installers.

‌Contact:‌
Aaron Chan (CEO)
Email: aaron@aheatpump.com
Phone: +86-15099917097 WhatsApp: +86-13711982714
www.aheatpump.com

Alibaba: aheatpump.en.alibaba.com

Made-in-China: aheatpump.en.made-in-china.com

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Hereby the test report as follows for your reference: