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Air Source Heat Pumps
Mitsubishi Air Source Heat Pumps
The heart of low carbon home

Kingspan Cylinder

Kingspan Cylinder
Provides mains pressure hot water and all components vital to the system in a
pre-packaged appliance.

Radiator System

Outside the house

Outside the house

Certificate Number MCS 1254 Heat Pumps

What is an Air Source Heat Pump?

An air source heat pump is an energy efficient method of heating your home, replacing the conventional boiler. Often for every 1 kWh of electricity used to power the heat pump, 4 kWh of useful heat can be produced thus making the system up to 400% efficient.

How Does an Air Source Heat Pump Work?
An air source heat pump extracts heat from the surrounding air and it is raised to a higher temperature which will be useful in the home. The system contains a refrigerant liquid with a boiling point of -40°C; this evaporates when absorbing heat from the outside air, the resulting gas is then compressed which raises its temperature to around 75°C. This heat is then passed to water via the heat exchanger and can then be used for your central heating or hot water.

How it works


  • Operates in all conditions
  • Reduces heating bills by up to 50%
  • Very low carbon emissions
  • Long life span, with no annual service required
  • Up to 5 times as efficient as a gas or oil burning boiler
  • Can be located out of sight, e.g. in a loft
  • Grants are being offered to help with payment of the system
  • Some systems are also capable of cooling your home if required
  • Tried and tested method, very popular in Europe and the USA
  • Can be used with standard radiators although under floor heating is recommended

Graph to Show Running Costs Compared to Conventional Boilers

Graph to Show Running Costs

Works in both new and existing homes

New Homes
CO2 emissions reduced by 30%
There is currently a substantial under supply of housing in the UK. In order to meet the demand for new homes, the housing sector is set to increase its build rate by 23% over the next 20 years. This means that by the year 2050, over a third of the UK’s housing stock will have been built inside of four decades. The Government is therefore focussed on using this growth as the ideal opportunity to cut energy use and water consumption in homes and is introducing legislation and guidelines in support of this.

Existing Homes
CO2 emissions reduced by 50%
The potential for reducing CO2 emissions as well as the energy demands of existing homes is even greater than with that of new build. Existing energy use is likely to be much higher than in a new build, due to lower insulation levels and older heating systems with low efficiency.

Existing homes have the potential to benefit from Government grant funding. Please refer to the latest.

Micro Generation Listing. For further details and the latest information regarding any grants, please visit

As a further incentive for home owners to consider systems such as the Mitsubishi Electric Ecodan, the cost of VAT is reduced to only 5% in recognition of air source heat pump status as a low carbon technology as opposed to the standard rate of VAT applicable on all traditional heating systems.