Qingdao Haiang HVAC Equipment Co., Ltd.,

Qingdao Hiounce HVAC Equipment Co., Ltd., established in 1958, specializes in the R&D and manufacturing of gas-fired combination boilers, condensing boilers, and modular boilers—with an annual output of 120,000 units. In partnership with Italy’s Cosmo Group, the company is committed to delivering international-standard, high-quality, low-carbon, and environmentally friendly gas thermal energy equipment solutions.

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ZunJu

Low-Ambient-Temperature Air-Source Heat Pump Space Heater

This product utilizes air-source heat pump technology, combining energy efficiency and rapid heating to deliver high-performance, comfortable heating for both residential and commercial spaces. It provides instant heating upon startup and fast temperature rise for greater flexibility and convenience.

Featuring bidirectional airflow—warm air directed downward and cool air upward—the unit ensures uniform indoor temperature distribution and enhanced heating comfort. Its quiet, gentle airflow minimizes operational noise and dryness, delivering a natural and serene heating experience.

The integrated structural design simplifies installation. Equipped with vapor injection enhancement technology, the unit maintains effective heating capacity at -25℃ ambient temperature and operates stably down to -30℃—ideal for winter heating in cold-climate regions.

Category:

Heat Pump Units
  • Rapid heating, flexible and convenient operation, comfortable warmth
  • Air-source heat pump: saves electricity and reduces operating costs
  • Bidirectional airflow: warm air directed downward, cool air upward—instant heating and rapid temperature rise
  • Integrated design for easy installation
  • Quiet, gentle airflow—warmth without dryness
  • Vapor injection enhancement technology enables heating at -25℃ and stable operation down to -30℃
Parameter Item Unit HRF-1.5P HRF-2P
Model Complete Unit Model HRF-1.5P HRF-2P
Outdoor Unit Model HRF-1.5W HRF-2W
Indoor Unit Model HRF-1.5G HRF-2G
Rated Voltage/Frequency 220V~50Hz 220V~50Hz
Heating Capacity (W) Heating Capacity (-12℃) W 3000 4000
High-Temperature Heating Capacity (7℃) W 3000(400~6700) 4000(400~7500)
Low-Temperature Heating Capacity (-20℃) W 3000 4000
COP Rated Heating COP (-12℃) 2.30 2.30
High-Temperature Heating COP (7℃) 3.75 3.75
Low-Temperature Heating COP (-20℃) 2.00 2.00
HSPF / 3.45 3.43
Cooling Capacity (W) / W 400~3900 400~4900
Cooling Power (W) Cooling Power (W) W 120~1565 120~1925
Airflow/Static Pressure Airflow m³/h 630 630
Static Pressure Pa 0 0
Rated Current (A) High-Temperature Heating (7℃) A 3.7 4.8
Rated Heating (-12℃) A 5.8 7.7
Low-Temperature Heating (-20℃) A 6.6 8.6
Power Consumption (W) Rated Heating (-12℃) W 1304 1739
High-Temperature Heating (7℃) W 800(90~2500) 1067(90~2650)
Low-Temperature Heating (-20℃) W 1500 2000
Rated Cooling (35℃) W 824 914
Maximum Current/Power Maximum Current A 10.5 12.1
Maximum Power W 2250 2650
Refrigerant Type/Charge / R410A/850g R410A/950g
Maximum Operating Pressure (MPa) Heat Exchanger Side 4.2 4.2
Suction Side 1.5 1.5
Discharge Side 4.2 4.2
Indoor Unit Dimensions (W×D×H) Net Dimensions mm 700×600×215 700×600×215
Packaging Dimensions mm 780×680×280 780×680×280
Outdoor Unit Dimensions (W×D×H) Net Dimensions mm 780×602×289 780×602×289
Packaging Dimensions mm 883×653×412 883×653×412
Noise Level Indoor Unit dB(A) 42/38/33 42/38/33
Outdoor Unit dB(A) 53 53
Net Weight Indoor Unit kg 15 15
Outdoor Unit kg 28 30
Refrigerant Pipe Specifications (mm) Liquid Line ø6 Copper Tube, 3 m ø6 Copper Tube, 3 m
Gas Line ø9.52 Copper Tube, 3 m ø9.52 Copper Tube, 3 m
Connection Method Flare Connection Flare Connection