Ground to Air Heat Exchangers

The perfect complement to the basic GreenTec System; Ground to Air Heat Exchangers, like Ground Source Heat Pumps, make use of the fact that a little below 1 metre from the surface, the temperature of the ground remains fairly constant all year round.

Produced by our partners Rehau, one of the world’s largest producers of polymer-based products, Ground to Air Heat Exchangers draw air in through a filter and, after passing it through the pipe loop, feed it to the intake side of our ventilation systems.

Without consuming any energy, the passage of air through the pipe raises or lowers the incoming air temperature to be closer to the ideal, reducing the amount of heating / cooling input required.

 

Winter Heating mode
The temperature of the ground is steady at 10°C, with the outside air at a very chilly –5°C.

Drawing the intake air through the Ground to Air Heat Exchanger raises its temperature by 9°C. Depending on the severity and duration of the Winter, this simple system can make savings of around 10% on a property’s heating bill.
 



 

 

 

 

 

 

 

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Summer Cooling mode
The blazing sun has brought the air temperature up to 30°C, which has, in turn, raised the ground temperature from its Winter 7°C up to 12°C.

Now the passage of air through the pipe takes heat out, dropping it by as much as 14°C, which greatly reduces the effort needed to condition incoming air.

Couple this with the GreenTec Comfort Cooling system and you have climate control that costs around 1p per hour to run, even on the hottest days.