Hot water heat pumps
Heating hot water efficiently and in an environmentally friendly way
Dimplex hot water heat pumps are a particularly energy-efficient and cost-effective solution for producing hot water – both in new buildings and in existing buildings. They cover your hot water needs all year round and obtain up to 70 percent of the energy they require from the ambient air or room air, which is completely free of charge.
DHW 100PWH hot water heat pump
- Wall-mounted hot water heat pump
- For new builds and renovations
DHW 250P hot water heat pump
- Highly efficient hot water preparation with hot water temperatures up to 60°C
- Energy efficiency class A+
- Ideal for combining with an oil or gas boiler to provide hot water all year round
DHW 301P hot water heat pump
- With 270 l storage capacity
- Easy operation via rotary knob and setting buttons for access to boost function, PV function, time programs, and much more.
DHW 301P+ hot water heat pump
- Can be combined with a second heat generator, such as an oil or gas heater
- With a storage capacity of 270 l
The DHW series hot water heat pumps from Dimplex
A hot water heat pump is one of the most efficient solutions for hot water preparation in both new buildings and existing buildings. It can cover the hot water needs of a single-family home all year round, regardless of an existing heating system. It obtains up to 70% of the energy required for heating from the ambient air or the waste heat present in the room air.
Dimplex hot water heat pumps combine comfort and efficiency. The most important advantages of the DHW series at a glance:
Control panel functions
You can quickly switch between the different functions on the control panel by briefly pressing the button:
- “Smart” function. The heating is managed based on the estimated hot water consumption. Only part of the storage tank is kept at temperature if the device detects a lower hot water demand.
- “Comfort” function. When water consumption is high, the additional electric heating is operated simultaneously with the heat pump to ensure that the comfortable water temperature does not fall below a minimum comfort temperature of 38 °C.
- “Protect” function. This function activates a weekly cycle to combat Legionella bacteria.
- “Electric” function. Here, the system operates only with the electric auxiliary heater.
- “Low load times” function. The system operates only when a signal for low load times is received.
Basements are often unintentionally passively heated, be it by a boiler or by electrical devices that radiate a lot of heat. The hot water heat pump uses this energy from air and waste heat to prepare hot water. Up to 70 percent of the energy required is used free of charge. That's easily enough for a one- to two-family house. Positive side effect: The cellar is automatically dehumidified and mold formation is reduced. If that's not enough for you: a connection to an air distribution system is possible and makes the domestic water heat pump even more efficient. This means that other rooms are also used to convert the exhaust air into warm water. Up to 560 liters of hot water are possible at once - more comfort is not possible. And if you want it to be even more energy efficient, connect a PV system.
Take advantage of our warranty extension to 5 years (sales area Germany and Austria).
The energy-saving solution
If hot water heat pumps are used to supplement fossil fuel heating, the latter can be switched off completely during the summer months. During this time, the heat pump generates enough hot water to cover demand on its own. This saves heating costs and increases the environmental friendliness of the existing fossil fuel heating system. In addition, homeowners with a hot water heat pump become somewhat less dependent on rising oil and gas prices. Combining it with a heating heat pump can also be useful if the basement needs to be dehumidified or if a large building has a high-performance heating heat pump and relatively low hot water requirements.
Buildings with electric heating systems
Electrically heated buildings generally do not use water-based heating systems. Hot water is often provided by electric wall-mounted storage heaters or instantaneous water heaters. Here too, a hot water heat pump can be an ideal solution, reducing operating costs thanks to its higher efficiency.
The ideal installation location
The ideal location for a hot water heat pump is indoors in a room with a natural source of waste heat, such as a boiler room or utility room. Here, the heat pump can extract a particularly large amount of heat from the ambient air and thus operate very efficiently. Proximity to storage rooms is also advantageous, as the cold air that escapes from the heat pump after the heat pump process can be used to cool food. The room chosen for installation should have a minimum size of 20 cubic meters in order to provide sufficient energy for hot water production.
Use of exhaust air as a heat source
In new buildings, the hot water heat pump is often combined with controlled residential ventilation. The air extracted from the kitchen, bathroom, and toilet exhaust air rooms is an efficient heat source for the heat pump. Thanks to the high temperatures of approx. 20 °C throughout the year, the DHW 300VD+ can be operated with lower volume flows of 80 - 220 m³/h. Controlled supply air is fed into the living areas via decentralized air inlets, e.g., in the windows.
Dehumidification of rooms
Almost every house has a room where laundry is dried or a heat dryer is used, which means it needs to be ventilated frequently to prevent mold growth. Both the waste heat from the dryer and the humid air are an efficient heat source for the hot water heat pump. The nice side effect is that the room air is dehumidified even when the windows are closed.
The perfect team: hot water heat pump and PV
Combining a heat pump with a photovoltaic system is ideal, as the latter can generate the electricity required to operate a heat pump in a cost-effective and environmentally friendly manner. In addition, the hot water heat pump uses free environmental energy, converting one kilowatt hour of self-generated electricity into several kilowatt hours of heat. The energy is stored in the hot water and can also be used in the evening when there is no longer any sunlight available. Thanks to the low power consumption of the hot water heat pump of approx. 500W, it is possible to cover hot water production exclusively with self-generated electricity, even with low PV yield.