Hot Selling 55kw Heat Pump Monoblock R32 for School

• Customization: Available
• Certification: RoHS, ISO9001, CE
• Working Medium: R32
• Model NO.: R32 Commercial Low-temperature Heat Pump
• Heat Source Type: Air Source Heat Pump
• Heat Pump: Low-Temperature Heat Pump
• Heat Pump Air to Water: Air Source Heat Pump
• Air to Water Heat Pump: -35℃
• Commercial Heat Pump: Heating and Cooling
• Air Source Heat Pump: R32
• Best Heat Pump: Low-Temperature Waermepumpe
• Heat Pump Cold Weather: Waermepumpe
• R32 Cold Weather Heat Pump: Low-Temperature Heat Pump
• Waermepumpe: R32 Heat Pump Cold Weather
• Air Source Waermepumpe: R32 Heat Pump Cold Weather
• Heat Pump Monoblock: Waermepumpe
• Transport Package: Carton or Wooden Frame
• Trademark: Hien
• Origin: China
• HS Code: 8418612090
• Production Capacity: 50000pieces/Year
• Package Size: 167.50cm * 86.00cm * 167.00cm
• Package Gross Weight: 420.000kg

Product Description

Product Description

Unstoppable comfort down to –35 °C

Unstoppable comfort down to –35 °C: R32 Commercial Low-temperature Heat Pump sustains full-capacity heating when ordinary units quit, cutting operating costs for hotels, apartments, retail and mixed-use buildings alike.

Engineered for the planet's coldest commercial hubs, the unit's enhanced vapor-injection scroll compressor, oversized low-temperature evaporator and AI-driven defrost logic keep supply-water at 55 °C—even when the mercury plunges to –35 °C. No backup boilers, no electric coils, no downtime; just steady, efficient warmth for guest rooms, corridors and merchandising floors while competitors struggle at –20 °C.

Key Features:

Operating in extreme cold conditions: Stable Running at -35℃ Ambient Temperature.
Versatile functionality: The heat pump meets both heating and cooling requirements, offering a more comfortable cooling experience than traditional air conditioning.
Intelligent defrosting: Smart control system to shorten defrosting time, extend defrosting intervals, and achieve energy-efficient heating.
Low noise: Internal unit equipped with multiple noise-reducing and thermal insulation materials to minimize noise levels.
Equipped with multiple protective mechanisms for comprehensive protection of your safety and equipment, extending the equipment's lifespan.
Intelligent anti-freezing: The heat pump's intelligent anti-freezing function effectively prevents system icing issues.
Smart Control: Easily manage your heat pump with Wi-Fi and app smart control, integrated with IoT platforms.

Specification

Name		DLRK-45ⅡBM/A2	DLRK-55ⅡBM/A2	DLRK-66ⅡBM/A2	DLRK-88ⅡBM/A2
Power Supply		380V 3N~ 50Hz	380V 3N~ 50Hz	380V 3N~ 50Hz	380V 3N~ 50Hz
Anti+B4:P25-Electric Shock Rate		Class I	Class I	Class I	Class I
Ingress Protection Rating		IPX4	IPX4	IPX4	IPX4
Condition 1	Rated Heating Capacity	20000~45000	25000~55000	30000~66000	35000~88000
Condition 2	Rated Heating Capacity	30000	38500	45000	58000
	Rated Heating Power Input	11200	15400	18000	24000
	COP	2,69	2,5	2,5	2,42
Condition 3	Low Temp. Heating Capacity	25000	31000	37000	48000
	Low Ambient Heating Power Input	10700	14000	16800	22300
IPLV(H)		3,34	3,3	3,33	3,2
Condition 4	Rated Cooling Capacity	35000	45000	52000	65000
	Power Input	12200	16000	18000	24000
	EER	2,87	2,81	2,89	2,71
IPLV(C)		4,2	4,05	4,16	4,2
Max Power Input		18000	21500	26000	36400
Max Running Current		32	38,5	46	65
Rated Water Flow		6,02	7,74	8,94	11,18
Water Pressure Drop		28	25	26	35
Water Pipe Connection		DN40/1½" Female Thread	DN50/2" Female Thread	DN50/2" Female Thread	DN50/2" Female Thread
Noise		67	71	71	72
Refrigerant/Charge		R32/7.0kg	R32/(4.5×2)kg	R32/(5.5×2)kg	R32/(6.5×2)kg
Dimension (L×W×H)		1500×800×1615	1675×860×1670	1755×900×1700	1755×930×1700
Net Weight		320	420	480	510

Test ambient temperature

Condition1: Outdoor DB Temp. 7 °C, outlet water Temp. 45 °C
Condition2: Outdoor DB Temp. -12 °C /WB Temp.-13.5 °C, outlet water Temp. 41 °C
Condition3: Outdoor DB Temp. -20 °C, outlet water Temp. 41 °C
Condition4: Ambient DB Temp. 35 °C, outlet water Temp. 7 °C"    

MORE THAN 70000 PROJECTS COMPLETED SO FAR; MORE THAN 6.5 MILLION PRODUCTS DELIVERED.

HIGHLIGHT  PROJECTS

The 2008 Shanghai World Expo.
Universiade SHENZHEN 2011
The 2011 Universiade in Shenzhen.
BOAO FORUM FOR ASIA
The 2013 Boao Summit for Asia in Hainan.
The artificial island hot water project of the Hong Kong–Zhuhai–Macao Bridge in 2019.
2016 the hot water reconstruction project of Qingdao port.
BEIJING 2022
The 2022 Beijing Winter Olympic Games & Paralympic Games.
G20 2016 China
2016 the G20 Hangzhou Summit.
19th Asian Games Hangzhou 2022
2023 the Asian Games in Hangzhou

Exhibition

Global Presence with Hien From Beijing ISH to Milan MCE, from Frankfurt ISH to Birmingham Installer Show

Hien is redefining global standards in sustainable climate control — one heat pump at a time. At the world's top HVAC exhibitions, our eye-catching booths showcase cutting-edge heat pump technologies and a track record of over 70,000 successful solutions delivered worldwide. We're not just attending — we're driving the transformation toward energy-efficient, low-carbon living.

Meet us at:

ISH Germany • Hall 12.0 E29 • 156 m²
ISH China & CIHE • E4-03 • 400 m²
MCE Milan • Hall 3 M50 • 60 m²
Installer Show Birmingham • 2024 & 2025 • Two booths
Warsaw HVAC Expo • E2.16 • 69 m²
Heat Pump Technologies Milan • C22 • 32 m²

Company Profile

ABOUT HIEN

Founded in 1992, Hien firstly started as an electronic component manufacturer. With a registered capital of 300 million RMB, Hien entered the air source industry in 2000. It is a leading enterprise of air source heat pumps in the area of product R & D, production, sales, and after-sales service. Hien owns one of the largest production bases of heat pumps in China, as well as the CANS-certified state-level comprehensive laboratory.

Production Experience	Total foorspace	Cooperated suppliers	ODM services	R&D Team	Transaction Amount
30+years	(51,234)square meter	(5300+)	available	100+ Workers	800,000,000+

Innovation Engine Behind Hien's Heat Pump Excellence 

At Hien, our R&D team is the driving force behind breakthrough heat pump solutions. With over 130 invention patents, 106 technical experts, and 25 years of deep experience in core technologies, we turn ideas into high-performance, energy-efficient systems.

Our facilities span 5,000 m², equipped with tools valued over ¥20 million, supporting expertise in thermal power, electrical engineering, energy management, and more. Backed by two R&D centers and a national-level postdoctoral research station, we don't just follow trends — we define them.

From concept to deployment, our team customizes solutions that meet real-world demands, empowering our global partners to lead in sustainability.

Quality You Can Trust: Hien's Rigorous Testing Standards 

Every Hien heat pump undergoes a precise quality control process, including 43 performance, safety, and reliability tests across 8 rigorous categories — from transportation and rain resistance to life-cycle stress validation.

Why do we do it?

Because quality isn't just a promise — it's the foundation of trust. Lower failure rates, reduced maintenance, and enhanced customer satisfaction are just the beginning.

Certified under ISO9001 standards, we uphold our policy: "Adopt advanced technology, adhere to continuous innovation, enhance customer satisfaction, and fulfill quality commitments."

FAQ

Q.Are you a trading company or manufacturer?
A: We are a heat pump manufacturer in China.We specialized in heat pump design/ manufacturing for more than 25 years.

Q.Can i ODM/ OEM and print my own logo on the products?

A: Yes, Through 25 years research and development of heat pump, hien technical team is professional and experienced to offer customized solution for OEM,ODM customer, which is one of our most competitive advantage.
If above online heat pump does not match your requirements, please do not hesitate to send message to us, we have hundreds of heat pump for optional, or customizing heat pump based on demands, it is our advantage!

Q.How do l know if your heat pump are good quality?
A: Sample order is acceptable for testing your market and checking our quality And we have strict quality control systems from raw material incoming until finished product delivery out.

Q.Do you test all the goods before delivery?
A: Yes, we have 100% test before delivery. If you need any assistance, please feel free to contact us.

Q: What certifications do your heat pump has?
A: Our heat pump have  CEcertification, MCS,ISO 14001, ISO 45001, and ISO 9001  certification.

Q: For a customized heat pump, how long is the R&D time (Research& Development time)?

A: Normally, 10~50 business days, it depends on requirements, just some modification on standard heat pump or a totally new design item.

If you are interested in this product,please fill in the below and send us,we will reply you and also send you the latest product catalog and latest quotation within 1 hour!