Renewable Energy

Renewable thermal technologies offer a safe, clean, efficient, and increasingly cost-effective option for reducing conventional energy use.

By harnessing naturally sourced energy such as air, ground and solar light we can assist you in reducing your heating bills as well as your carbon footprint.

The main advantages of using renewable energy are:

Heat Pumps

One of the most efficient and least environmentally-damaging homes heating option is a heat pump. These come in two varieties: air-source and ground-source.

Air-source heat pumps draw heat out of the atmosphere (even on cold days), concentrate the heat using refrigeration technology, and then distribute the heat through the house, usually through a duct system or through pipes.

Ground-source heat pumps, also known as geothermal systems, concentrate heat from the earth via pipes buried roughly one to two metres beneath the surface, or in vertically drilled bore holes that typically run a couple of hundred feet deep.

Heat pumps are powered by electricity, but because they extract free heat directly from the air or ground, they are extremely efficient. As a general rule, for every kW of electrical energy consumed by an air-source heat pump, you’ll get about three kW of heat. For ground-source systems, the ratio is about one to four. In addition, some heat pumps can be run in reverse to cool a building during summer periods, by extracting heat and transferring it to the ground thus helping to recharge the ground loops ready for winter. Systems can also be connected to domestic water heating systems to provide a large portion of domestic hot water.


Solar Hot Water

Solar hot water systems are commonly referred to as solar thermal systems. They consist of solar collectors that are typically mounted on the roof of a house, a storage tank, via pipes connecting the two. Pumps circulate a heat transfer fluid — either water or nontoxic antifreeze (propylene glycol) — through the solar collectors, where it is then heated by the sun. It is then pumped back to the storage tank, where a heat exchanger transfers the solar heat the collectors have gained through tubes in the storage tank. Hot water is drawn from this tank for use within the home.

By adding more solar collectors and a larger storage tank, these reliable cost-effective systems can be used to heat homes. Solar thermal systems can be used to tie into new or existing radiant floor, (under floor heating) or to pre-warm water prior to feeding a boiler system, reducing any fuels used by this equipment.