Send Enquiry

How Heat Pumps Work

How Heat Pumps Work Heat pumps are based on the simple physical principle that gas heats up when it is compressed and cools down when it expands.

  1. A ‘brine’ solution, such as a mixture of water and alcohol or glycol, circulates in a collector loop and absorbs heat energy from the bedrock, ground, air or water. Brines cannot freeze.
  2. In a heat exchanger (evaporator), the tepid brine in the collector loop meets the eco-friendly refrigerant circulating in the refrigerant circuit. The refrigerant absorbs energy, heats up and turns into gas.
  3. A compressor is then used to increase the pressure of the refrigerant. This causes the temperature to rise to the required heating level.
  4. In a second heat exchanger (condenser), the refrigerant releases its heat to the heating system in the house. As this occurs, the refrigerant is cooled down.
  5. The refrigerant continues to circulate. An expansion valve is used to reduce its pressure. This in turn reduces its temperature and the refrigerant returns to liquid form. The process is repeated when the refrigerant meets the brine again.

Heat Pumps in Low Energy Homes

High energy prices and global climate change have both made low-energy homes much more attractive in recent years.

Low-energy buildings typically use high levels of insulation and energy-efficient windows, providing low levels of heat loss and efficient energy ventilation. Heat pumps are an increasingly important part of this overall picture.

Renovation Projects

The savings a heat pump can provide will depend on your home, its location and your existing heating system. Authorised Danfoss installers can make an accurate calculation for you to help you reach the right decision. Danfoss Heat Pumps can also be adapted to existing heating systems and combined with different types of supplementary energy sources, such as solar, gas or oil.

New Builds

When building a new house, there are lots of decisions to make, of which choosing the correct heating solution is one of the most important. With the right heat pump, you can cover a range of applications, including cooling and heating a swimming pool, within a single system. This avoids the need to invest in and maintain several separate solutions.