Energy Saving Technology

What makes up your Low Energy Home?

Mechanical Ventilation Heat Recovery unit

How it works:

With air tight new buildings from ECOHAUS, whole house ventilation is the most effective ventilation strategy on the market. With addition of heat recovery, it continuously extracts humid air from wet areas such as kitchen and bathrooms and using a heat exchanger, transfers the heat to filtered incoming fresh outside air which is redistributed to the living areas and bedrooms. Heat exchangers are up to 93% efficient which significantly helps reduce heating bills, plus the effect of condensation is dramatically reduced.

Air Source Heat Pump

How it Works:

Even cold air is full of energy and air source heat pumps use the freely available heat in the ambient air to provide efficient heating and hot water at air temperatures as low as -25°c. Because the source of the heat – the air – is abundantly all around us, air source heat pumps have the advantage of low installation costs and minimal space requirements, making them ideal for new build applications.

Suitable for either indoor or outdoor installation, air source heat pumps can be used for heating, cooling and to produce domestic hot water. With the relatively mild winter temperatures in the UK, Air Source achieve seasonal co-efficient of performance comparable with ground source, meaning excellent levels of performance can be achieved throughout the year for a quarter of the price as ground source.

Ground Source Heat Pump

How it works:

The earth stores an enormous amount of solar energy both from solar radiation and rainfall, ground source heat pumps extract this freely available energy to provide low cost, low carbon, high efficiency heating and hot water. To extract the energy ground source heat pumps use collectors, filled with a mix of water and antifreeze, buried in the earth, either horizontally or vertically. Although more costly to install than an air source heat pump, with the constant temperatures below ground throughout the year, ground source heat pumps deliver high levels of efficiency all year around irrespective of the seasonal variations in air temperature.


Rainwater Harvesting

Rainwater Harvesting works by taking the rain from your roof gutters, filtering out leaves and debris and storing the water in an above ground or underground tank. This water can then be used for non-drinking applications such as vehicle washing, irrigation, toilet flushing and washing machines.

Solar Water Heating

Solar water heating systems use solar panels, called collectors, fitted to your roof. These collect heat from the sun and use it to warm water which is stored in a hot water cylinder. There are two types of solar water heating panels; they are evacuated tubes or flat plate collectors. Flat plate collectors can be fixed on the roof tiles or integrated into the roof. An air source heat pump can be used as a back up to heat the water further to reach the temperature set by the thermostat in the cylinder when the solar water heating system does not reach that temperature.

Photovoltaics (PV)

Solar PV panels require only daylight, not necessarily sunlight to operate therefore they are capable of generating electricity even on cloudy days. Solar PV’s will work equally well in urban or rural locations and can be installed on the roof of most homes that can support the equipment. They can easily be connected to a building’s electricity supply and any surplus energy can be sold back to the National Grid.

When in use, Solar PV’s do not generate Greenhouse gases or cause pollution. Each kilowatt-peak (kWp) of electricity produced can save approximately 455 kilograms of carbon dioxide emissions compared with electricity generated from fossil fuels.

The UK Government is currently offering attractive incentives for those creating their own “green electricity.” To find out more please visit

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