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| Introduction |
| Environmental Management |
| Appliances |
| Insulation |
| Lighting |
| Heating |
| Water |
| Purchasing |
| Waste |
| Additional Information |
| Introduction |
| Solar Thermal Heating |
| Solar Photovoltaic Cells |
| Wind Turbines |
| Combined Heat & Power |
| Ground Source Heat Pumps |
| Wood Boiler & Hydro |
| Rainwater Harvesting |
| Control Systems |
| Financial Assistance |
| Environmental Reviews |
| Consultancy |
| Waste Audits |
Ground Source Heat Pumps use the refrigeration cycle to transfer heat from the ground to a hot water and space heating system. The ground temperature remains stable at 11-12°C throughout the year.
They are especially suitable for under floor heating because they are most efficient providing water at 35°C.
At their most efficient they generate 4KW of heat for every 1KW electricity used in the compressor and pump. They are perhaps of most benefit to buildings with no gas supply and where a condensing boiler cannot be used.
Air to Water Heat Pumps: Where land around the business is limited, the ambient heat energy in the air or water can be harnessed in the same way as with ground source heat pumps. Air to water heat pumps work like air conditioning in reverse and provide 3KW of heat for every 1KW of electricity used to run the pump.
