Dormitory Commercial Hot Water Heat Pump
Dormitory Commercial Hot Water Heat Pump – reliable hot water for student and staff housing. DC inverter technology ensures energy efficiency and cost savings. Wide operating range guarantees year‑round performance. Low‑noise design suits residential environments. IoT‑enabled controls simplify facility management.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Product Description
The Dormitory Commercial Hot Water Heat Pump is engineered for student dormitories, staff housing, and other residential facilities, delivering consistent hot water for daily needs. DC inverter technology provides exceptional efficiency with COP up to 5.15, significantly reducing operating costs. The unit operates reliably across a wide temperature range from -35°C to 43°C, ensuring hot water availability throughout the year. Low‑noise operation makes it ideal for residential settings where quiet is valued. R32 refrigerant offers a lower environmental footprint, while built‑in IoT connectivity allows facility managers to monitor performance and detect faults remotely – the smart choice for campus and workforce housing.
A+++
Energy Class
44 dB
Quiet Operation
8
Units Cascade
Products Advantages
Discover the core advantages that make Tongyi commercial heat pumps stand out – from exceptional energy efficiency and intelligent controls to reliable winter performance.
EVI High-Output Core Technology
DC Inverter EVI technology boosts low-temperature heating capacity and efficiency, ensuring reliable hot water supply even in harsh winter conditions down to -25°C . Twin rotary DC inverter compressor consumes 30% less power than traditional scroll compressors whilst also giving a wider operating frequency range, enabling precise control and reducing running noise levels.
R32 Eco Refrigerant
The unit adopts R32 environment-friendly refrigerant with lower GWP, which is non-toxic and stable, with small pressure loss and good heating performance. Complies with EU F-Gas phase-down requirements.
DC Inverter Technology – A+++ Ultra Efficiency
DC inverter heat pump is more efficient than on/off heat pump, can save energy and save electricity. Twin-rotor DC inverter compressor boosts overall efficiency by 30%, with quieter operation and longer lifespan. BLDC motor fan with system efficiency up to 85%.
IoT Smart Control
Integrated smart control with remote monitoring, data analytics, and climate-adaptive curves. With IoT Technology the heat pump status can be monitored remotely. When a failure occurs, it is possible to check and control remotely the unit's information, providing immediate support. With OTA (update over air) Technology, software updates can be deployed remotely.
Modular Parallel & Rotation Operation Technology
Supports up to 8 water heater modules of the same model in parallel, controlled by one wire controller. Rotation operation intelligently balances running time between units, avoiding excessive operation and greatly extending service life. Rotational defrosting controls defrosting units in batches and stages, avoiding excessive water temperature fluctuation and improving comfort.
Ultra-Quiet Operation
Compared with water heaters equipped with original scroll compressors, noise can be reduced by 8–10 dB(A). Creates a peaceful working and living environment.
Wide Power Supply & Wide Temperature Ranges
DC inverter module adapts to voltage fluctuations of ±20% of the electricity grids, and also adapts to 50/60Hz power supply specifications. Wide ambient temperature and water temperature operating ranges support both hot water and cool water generation.
Smart Defrost Logic
Optimized defrost control increases effective heat output compared to conventional systems, ensuring uninterrupted hot water supply.
Modular Parallel & Rotation Operation Technology
Supports up to 8 water heater modules of the same model in parallel, controlled by one wire controller. Rotation operation intelligently balances running time between units, avoiding excessive operation and greatly extending service life. Rotational defrosting controls defrosting units in batches and stages, avoiding excessive water temperature fluctuation and improving comfort.
Multiple Protection Systems
The unit has its own high and low voltage switch, antifreeze protection device, overload protection device, power phase sequence protection device, etc., with automatic real-time alarm when abnormality occurs.
Support Modbus Protocol
Supporting Modbus protocol provides better flexibility and stability, making machine control more convenient and reliable while greatly reducing system maintenance costs. The system also optionally supports BACnet and BMS.
Multi-Scene Heat Pump Solutions
Our commercial heat pumps deliver efficient hot water for diverse applications – now available worldwide.
Hotels & Resorts
Shangri-La, Hilton, Sofitel, Four Seasons, Westin, St Regis, Pullman, Le Meridien, Conrad, Bulgari, Taj Mahal Hotel, Narada
Factories & Industrial Facilities
SAIC Motor, Honda, Zoomlion, Unilever
Commercial Buildings
Office buildings, schools, hospitals – central hot water with quiet operation that doesn't disturb work or daily life
Large-Scale Venues
Shenzhen Universiade, Hangzhou Asia Games
Retrofit & Renovation
Replace traditional gas/oil boilers or electric water heaters. Simple installation, short payback
PV-Coupled Systems
Integrate with photovoltaic systems to convert surplus solar energy into heat, maximizing self-consumption and further reducing operational costs
Energy & Cost Savings
Under the same condition – daily hot water demand 1000L, heating water from 15℃ to 55℃:
| Heating Method | Tongyi Heat Pump | Electric Water Heater | Liquid Gas Water Heater |
| Fuel | Electricity | Electricity | Liquid Gas |
| Efficiency | 380% | 95% | 80% |
| Daily Energy Demand | 12.2 kWh | 49.5 kWh | 5.8 m³ |
| Daily Fuel Cost | $1.82 | $7.32 | $6.28 |
| Annual Running Cost | $606.8 | $2667.2 | $2294.3 |
| Tongyi heat pump saves up to 77% compared to electric water heaters and 74% compared to liquid gas water heaters.DC inverter technology adjusts compressor speed based on actual load, delivering exceptional seasonal efficiency. Compared to traditional systems, it can reduce annual operating costs by up to 30–40%. | |||
Product Specifications
Our specification table gives you a clear overview of the main technical data, helping you compare models with ease
| Parameter | KX120 DEPA-V | KX180S DEPA-V | KX200S DEPA-V |
| Nominal Heating Capacity | 12 kW | 18 kW | 20 kW |
| COP | 4.85 | 4.85 | 4.72 |
| Rated Power Input | 2.47 kW | 3.71 kW | 4.24 kW |
| Power Supply | 187~253 V / 1Ph / 50,60Hz | 187~253 V / 1Ph / 50,60Hz | 304~456 V / 3Ph / 50,60Hz |
| Refrigerant | R32 (1350 g) | R32 (1350 g) | R32 (1350 g) |
| Operating Ambient Range | –25 ~ +46 °C | –25 ~ +46 °C | –35 ~ +43 °C |
| Noise Level | 46 ~ 54 dB | 46 ~ 54 dB | 50 ~ 60 dB |
| Dimensions (L×W×H) | 1030×380×780 mm | 1030×380×780 mm | 1030×380×780 mm |
| All models share the same twin‑rotor inverter compressor, BLDC fan motor, rated outlet temperature (55°C), max outlet temperature (60°C), IPX4 enclosure, and DN25 water connection. For full details (current, weight, flow rate, etc.), please refer to the complete technical datasheet. | |||
WHY CHOOSE US?
Tongyi has been advancing heat pump technology since 1999, with proven global experience across 40+ countries and certifications that meet the most rigorous international standards.
26 Years of Expertise-Founded in 1999, we entered Europe in 2003 — a pioneer with two decades of global track record.
Fully Certified-CE, ETL, CB, 3C, TÜV Rheinland — all the credentials that matter for European and American markets.
Trusted by Global Brands-From airports and stadiums to Shangri‑La, Sofitel, and Hilton — world‑class landmarks rely on Tongyi.
Our Cases - what we finished
From luxury hotels to large-scale infrastructure projects, from offices to stadiums - Tongyi heat pumps have demonstrated reliable performance in thousands of projects across over 40 countries. Wherever comfort meets sustainability, our solutions are at work.
Environmental Impact
Join the green revolution with Tongyi Heat Pump Technology – Your partner in achieving carbon neutrality!
For over two decades, we've been at the forefront of the fight against climate change by conserving energy and reducing CO₂ emissions:
750,000 tons of coal consumption reduced
3 billion kilograms of CO₂ emissions prevented
12.5 million kilograms of SO₂ emissions saved
3.2 million kilograms of NOx emissions reduced
Our efforts are equivalent to planting 100 million trees since 1999. Choose Tongyi Heat Pump Technology and experience the benefits of eco‑friendly commercial operations.
FAQ
Tell us about your project requirements and we will figure out a solution that will meet your budget and design expectations.
1
How quiet is the Commercial DC Inverter Water Heater?
Compared with scroll compressor models, noise can be reduced by 8–10 dB(A), ensuring a peaceful environment even during full‑load operation.
2
Is it difficult to install in an existing building?
No. The modular design offers flexible capacity options and simplified piping connections, making it suitable for both new builds and retrofit projects with minimal disruption.
3
Can it handle extreme winter conditions?
Yes. EVI‑equipped models deliver stable heating performance down to ‑25°C, ensuring reliable hot water supply even in cold climates.
4
How does IoT connectivity benefit facility managers?
It enables remote monitoring, scheduling, and real‑time performance tracking. Facility managers can adjust settings and receive alerts from anywhere, optimizing energy use and reducing maintenance costs.
5
What kind of energy savings can I expect?
DC inverter technology adjusts compressor speed based on actual load, delivering exceptional efficiency. Compared to traditional electric or gas water heaters, it can reduce annual operating costs by up to 74–77%.
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As a distinguished national high-tech enterprise, Tongyi Heat Pump is dedicated to the research, development, and manufacturing of air-to-water heat pumps, providing residential and commercial renewable energy-saving solutions to thousands of clients worldwide.
Committed to Quality, Safety & Sustainability
ISO 9001, ISO 14001, and ISO 45001 certified — ensuring excellence, environmental care, and workplace safety in everything we do.
TONGYI Heat Pump, recognized as a national high-tech enterprise, is committed to advancing air water heat pump technology.
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