09/11/2011 Thank you for joining us at The Harrogate Show

Thank you to everyone who joined us at The Harrogate Homebuilding and Renovating Show last weekend, we had a great show and a big turn out.

We love these shows as it's a chance to meet the public face to face and find out what it is they are looking for and to help answer some of their questions. One question that kept popping up was "What is the difference between Ground Source Heat Pumps and Ground to Air Heat Exchangers?"

A ground source heat pump or geothermal heat pump is a heating system that is electrically powered, it uses the grounds constant temperature to provide heating, cooling and hot water for properties.

A ground to air heat exchanger (GAHX) works in conjunction with a heat recovery ventilation system. It works by drawing air through an underground network of pipes, the GAHX again uses the constant temperature of the ground, around 10 degrees.

It is important to know that a GAHX is not a geothermal system, it doesn't use heat from the ground to power a building, it instead exchanges energy between the air and the ground in a system which is high volume and low energy!