We now specialise in commercial and residential renewable heating. We offer a highly personal and professional service to our clients, both on a large and small scale.

Working with Nu-Heat underfloor and renewables, the largest specialist supplier of warm water underfloor heating systems to the UK domestic market, we are now offering the Nu-Heat product range. This includes traditional warm water underfloor heating, ground source and air source heat pumps and solar collectors. For full details please contact us. We are also an accredited Ecodan air source heat pump installer with Mitsubishi.


Ground source heat pumps work by using heat stored in the ground from the sun’s solar radiation to supply all of the energy required for a home’s heating and hot water system. The top 15 metres of the earth’s surface maintains a relatively constant temperature of approximately 12 degrees centigrade.

This energy can be used to heat buildings indirectly. Pipe is buried in the ground, either in a borehole or a horizontal trench. The pipe is usually a closed circuit and is filled with a mixture of water and antifreeze, which is pumped round the pipe, absorbing heat from the ground. In winter the ground is warmer than the air and buildings above. The anti-freeze mixture absorbs heat from the ground, which is then concentrated and transferred to the buildings. This heat can be used to heat domestic water and a low temperature heating system such as underfloor heating. Air source heat pumps use the refrigeration process to transfer low grade energy from the air outside into high grade energy used for heating and domestic hot water. Even at temperatures as low as -20 degrees centigrade, an air source heat pump can supply significantly more energy than it uses – and with no local C02 emissions, it helps reduce impact on the environment. The refrigerant then passes through a condenser where energy is transferred to the heating system water and the refrigerant is turned from a high pressure vapour into a high pressure liquid. The liquid refrigerant then passes through an expansion valve that lowers its pressure and temperature. With the refrigerant evaporating and at a very low temperature it passes through a heat exchanger. At this stage the refrigerant collects large amounts of low grade energy from the air, causing it to boil and return to a vapour form. This continuous cycle of changing the state of the refrigerant from liquid to vapour allows the heat pump to extract energy.

Renewable energy service areas: Bishop’s Stortford, Stansted, Sawbridgeworth, Harlow, Great Dunmow, Takeley, Little Canfield, Little Hadham, Newport, Saffron Walden, Hatfield Heath, Hatfield Broad Oak, Great Hallingbury, Standon, Buntingford.