Heat Pumps

Heat Pump installation in and around the Chichester area

Lower your energy bills and reduce your carbon footprint with a Heat Pump
Heat pumps are a renewable technology that converts energy in the ground or air into heat. This process delivers green, low-cost, energy-saving heating and hot water all year round.
With the UK government launching a number of incentives to improve the energy efficiency of your homes; air and ground source heat pumps are an ideal solution to reduce your properties carbon footprint while lowering your energy bills.

Heat pumps can deliver a number of benefits:

  • Lower your fuel bills
  • Eligible for the government's Renewable Heat Incentive (RHI) (Ground Source Only)
  • Lower your home's carbon emissions
  • Does not require fuel deliveries
  • Little maintenance required

How do heat pumps work?
Put simply a heat pump takes the available heat from the ground or air surrounding a property and increases it to a more useful temperature for use in the home. This renewable source of heat can be used to create warm air or water (for space and central heating) as well as hot water (for both central heating and domestic hot water supply).

It achieves this by taking the same principle that allows a fridge to cool your groceries and by utilizing it in reverse.


A heat pump operates in the following way:

The source of heat, which can be outside air or a water mix which is contained within ground collectors, is either blown or pumped over the heat exchange surface of the outside part of the heat pump. This heat (although cold in comparison to a homes internal air) is warm enough to cause the special refrigerant liquid to evaporate and turn into a gas.

This gas is then put through a compressor which increases the pressure of the gas, a factor that causes its temperature to rise. For example you may have noticed that a bicycle pump, gets warm when it is used, the gasses in a heat pump experience the same temperature rise due to compression.

The gas (now heated) is passed over the internal heat exchange surface. This heat can then be either blown around a property or be transferred into a home’s central heating or hot water system.

The gas falls in temperature as the heat is transferred into the home and it subsequently returns to a liquid state. The refrigerant returns to the outside heat exchange surface and the process repeats itself until sufficient heat is passed into the home.

Heat Pumps are among the most efficient heating and hot water systems available today. In the region of 75% of the energy needed for heating comes from the environment, and so for every 1kWh of electricity used to power the heat pump compressor, between 3 and 4kWh of heating energy is produced, providing an efficiency of 300-400%.

This efficiency is known as the Coefficient of Performance, or COP, and you may occasionally see reference to the Seasonal performance which takes into the difference in temperatures throughout the seasons.

Air Source Heat pumps can be used with the more traditional radiator systems, if the appropriate allowance are made, however they will work most efficiently with low temperature sources of heating such as underfloor heating, as the lower the flow temperature of the circulating water the higher the efficiency of the heat pump.

Before installing a heat pump it is essential to ensure that an accurate heat loss calculation has been carried out, consideration has been given to insulation levels, are there secondary heat sources, is hot water required, if radiators are being used have they been sized in line with a lower flow temperature.

Heat pumps can be installed to heat well insulated buildings, as a fantastically efficient and cost effective alternative to fossil fuels. Every home has a different heating requirement, so our experienced team will assess your property, listen to your needs and identify the best solution for you.


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Call us today on 07771 572 892. If you don't like calling mobiles send us a text and we will call you right back!

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Send an email to enquiries@sirplumbingservices.co.uk and we can either call you back or reply promptly to your email.

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