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The NIBE MT-WH21 ventilation air/water heat pump boiler provides hot water in a sustainable way by utilizing recovered heat from ventilation air or outdoor air—without the need for natural gas! It is available in two versions with a capacity of 190 or 260 liters. The heat pump operates very efficiently. When using ventilation air, the NIBE MT-WH21 replaces the mechanical ventilation unit (MV box) in your home and achieves a COP of over 4.0.
If the (new) home is already equipped with an energy-efficient heat recovery unit (HRV), the heat pump boiler can instead operate with outdoor air. Even at an outside temperature of 7°C, the COP still exceeds 3.5.
Additional features of the MT-WH21 include optional wireless remote control, a built-in coil for connecting thermal solar panels (including integrated solar water heater control), and an ultra-quiet operation—making it one of the quietest heat pump boilers on the market!
| Feature | Value |
|---|---|
| Brand | Nibe |
| Supplier Code | 084112 |
| EAN Code | 5708512066730 |
| Discount Group | 114 |
| Width | 603 mm |
| Model | Monobloc |
| Height | 1960 mm |
| Depth | 620 mm |
| Weight | 100 kg |
| Heating Time | 7.1 h |
| Tank Material | Enameled Steel |
| Water Connection | 3/4" |
| With Heating Connection | Yes |
| Input Power Additional Heating | 1.5 kW |
| Suitable for Wall Mounting | No |
| Energy Efficiency Class | A+ |
| Nominal Capacity | 260 l |
| Circulation Connection | 3/4" |
| Operating Pressure (Water Side) | 6 bar |
| Lower Air Temperature Limit | -7 °C |
| Upper Air Temperature Limit | 40 °C |
| Solar Integration | Yes |
| Max. Water Temperature | 60 °C |
| With Air Duct Connection | Yes |
| Heat Source | Other |
| Connection Voltage | 230 V |
| Refrigerant R134A | Yes |
| Self-Learning | No |
| Protection Class (IP) | IP21 |
| Nominal Voltage 1 | 230 V |
| Capacity Profile | XL |
| With IFTTT Support | No |
| Adjustable Air Outlet | No |
| Refrigerant Content | 1.28 kg |
| Anode Protection | Magnesium |
| Compatible with Apple HomeKit | No |
| Compatible with Google Assistant | No |
| Compatible with Amazon Alexa | No |
| Global Warming Potential (GWP) | 1430 |
| Energy Efficiency Class (812/2013/EU) | A+ |
| With Circulation Connection | Yes |
| Three-Phase Version | No |
| Tap Water Connection | 3/4" |
| With Digital Display | Yes |
| Refrigerant Type | R134a |
| Suitable for Floor Mounting | Yes |
| Air Temperature Range | -7 to 40 °C |
Our employee is happy to help you find the right product
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