Healthier Living

Exhaust Air

All homes require ventilation to ensure a healthy environment and to avert sick building syndrome. Opening windows releases heat and smells from inside the building. It also in many areas lets in noise and other pollutants. The exhaust air system recovers this heat whilst also changing the air inside the house.

For both new builds and refurbishments, where the insulation is of a high standard, it is feasible to control the ventilation and so extract the heat. When ventilation based on opening windows and controlled domestic ventilation without heat recovery is used, the energy from the inside air is not used. The ventilation heat requirement accounts, however, for a considerable part (40 – 50%) of the total heat requirement for a well insulated home.

Cooling

Our products offer environmentally friendly cooling. They use much of the same equipment as heating equipment for passive cooling.

As the summer of 2006 demonstrated, we had a long hot summer and cooling could have helped. With a cooling system, the heat pump works in reverse, so that the heat is pumped back into the ground or recovered to heat the water. This application is particularly good for new builds. For cooling one requires either a ground source heat pump or an exhaust air heat pump. Ideally one has installed ducts but one can also cool the floor using an under floor heating system.