Heat pumps

A heat pump takes most of the energy it needs for heating from its surroundings – the air, the ground or water. It mainly uses electricity to move that heat into your home.

No-obligation site visit

What it is and what it does for your home

The principle is similar to a fridge, only in reverse: a refrigerant in a closed circuit absorbs heat from the outside environment, a compressor raises its temperature and a heat exchanger transfers the heat into the heating water. For every kilowatt-hour of electricity, the pump delivers several times more heat into your home.

Family homes most often use air-to-water heat pumps, which take heat from the outside air and need no boreholes or ground collectors. Ground-to-water and water-to-water systems are more efficient in winter, but require boreholes, a ground collector or wells.

A heat pump works best with a low heating water temperature, which makes it an excellent match for underfloor or wall heating and a well-insulated house. As well as heating, it provides hot water, and some types can also cool your home in summer.

For your household, that means lower heating bills, no combustion in the house and the option of using electricity from your own solar panels.

What the system can do and what it consists of

Outdoor unitIn an air-to-water system, it takes heat from the outside air; it is positioned with noise, condensate drainage and service access in mind.
Indoor unit and heat exchangerTransfers heat into the heating system and usually also contains the circulation pump, valves and controls.
Hot water cylinderHot water for your household – with suitable controls, heated preferably when cheaper electricity or your own solar power is available.
Buffer tankSmooths out the pump's operation, extends its running cycles and helps keep it running steadily.

Backup heat sourceAn electric immersion heater or another source helps on the coldest days and when heating water to a higher temperature.
Electrical connectionA dedicated supply, circuit protection and control from the consumer unit as part of your home's electrical installation.
Weather-compensated controlThe heating water temperature adapts to the outside temperature – and, in a smart home, to which rooms are currently in use.
Cooling in summerSome types can gently cool your home via underfloor heating or indoor units.

Why GRANDCOM

Electrics, IT and security under one roof

We design the wiring, home network, smart home and security together, so all the parts fit seamlessly together.

Servicing and support

You are not left on your own after handover – we help with changing settings, expanding the system and fixing faults.

One point of contact

One company coordinates the whole project, so you do not have to juggle multiple tradespeople and suppliers.

How the work at your home goes

Site visit

We come and look at your house or flat, go through your requirements and check your current installation.

Design and quote

We prepare a technical solution and an itemised quote, so you know exactly what you will get.

Installation

We coordinate our work with the other trades on site; once finished, we set everything up and test it.

Handover and support

We show you how everything works, hand over the documentation and remain available for servicing and further changes.