How does an air to water heat pump system work?
The sun heats the air.
The air flows through a green air central heating system.
The heat energy in the air is extracted, concentrated, and transferred into enough hot water to meet all your home’s heating needs.
It’s that simple.
Even in winter, on cloudy days, or cold nights, the air still carries heat energy from the sun. A Green Air Central Heating system works effectively in air temperatures as low as -20c.
Because it’s an intelligent system, it just works a little harder when it needs to.
A modern condensing oil or a gas fired boiler works at about an 85% efficiency rate. That means that for every £1 of oil or gas you burn, your boiler produces about 85p worth of heat energy. With an older, conventional boiler, every £1 you burn produce as little as 55p - 65p worth of heat!
Green Air Central Heating systems use advanced Mitsubishi Ecodan air to water heat pumps which work at between 300% and 500% efficiency – which means that for every £1 of electricity used to power them, they produce between £3 and £5 worth of heat energy.
So, Green Air heating will heat your home and supply hot water just like a conventional system. But as it’s at least 3 times more efficient it will save you money and help you help the planet by significantly reducing your carbon emissions.
- A Green Air Central heating system features a Mitsubishi Ecodan heat pump at its heart. An Ecodan unit extracts heat from the outside air in the same way that a fridge extracts heat from its inside. It can extract heat from the air even when the outside temperature is as low as minus 20° C.
- Energy is absorbed at a low temperature external to the property, and converted to high temperature before being sent inside. The key principal behind how an air source heat pump works is that as pressure increases so does temperature, and vice versa........... (see “Ecodan explained” site to find out more)
- The efficiency of air source heat pump systems is measured by a coefficient of performance (CoP) - the amount of heat they produce compared to the amount of electricity needed to run them. A typical CoP for an air to water heat pump is around 3.6.
- With conventional boilers, 1kW of input energy generates less than 1kW of heat. With a modern condensing boiler you can expect to get 0.85kWh of heat. With a regular, older boiler, as little as 0.5 to 0.7 kWh of heat energy. With an Ecodan unit supplied and fitted by Green Air, every 1kW of input energy is converted into an average of 3.6kW of heat.
- In other words, for every £1 of electricity the Ecodan unit uses, it will generate heat energy worth an average of £3.60, making it more than 3 times as efficient as conventional boilers.