HEAT PUMP - Air Source

Image of an Air Source Heat Pump

Heat flows naturally from a higher to a lower temperature. Heat pumps reverse this natural flow, extracting heat energy from a cool source, such as the air, and delivering it to a building's heating distribution system commonly in the form of underfloor heating or low surface temperature radiators. An air to air heat pump system will distribute heat energy internally via a unit which resembles a standard air conditioning unit system. They provide space heating only.

In the same way a fridge uses refrigerant to extract heat from the inside in order to keep your food cool, a heat pump extracts heat from a range of sources, and uses it to heat your home and hot water (an Air to Air System will only provide space heating). It is important to note that your property has been adequately insulated before installing a heat pump system.

Air source heat pumps absorb heat from the outside air to heat buildings, and present an advantage over ground source heat pump systems as they require less space to install (i.e. they do not require any external space for ground loop pipework). However, when the outdoor temperature drops, the efficiency of an air source heat pump drops much more quickly than the ground source option.

The key to an effective air source heat pump is that the energy required to make the heat useful (i.e. concentrated) is less than the energy required to provide the heat directly.

The coefficient of performance (CoP) is the key figure used with heat pump systems. It indicates the ratio of useful heat energy output to electrical energy input.

An air source heat pump system typically achieves a CoP of 3-4. This means that for every 1kWh of electricity input, you will get 3-4 kWh of heat output.

Is my site suitable?

Air source heat pumps undoubtedly work best where properties have a lower heat demand or perhaps have an existing heating system which has a lower operating temperature than a conventional heating system, i.e. they work best in a property with underfloor heating or low surface temperature radiators. Air to Air heat pump systems can be installed in any property to provide space heating only, however they undoubtedly work better in smaller properties such as flats or shops where ambient temperatures are easier to reach and maintain.

To discuss your air source heat pump requirements further, then please visit our showroom in Weston-Super-Mare or call now on 01934 622891. To conclude, key benefits of an air source heat pump system include:

  • POTENTIALLY, earn a tax-free, index-linked income for the next 8 years (see Renewable Heat Incentives page)
  • Reduce your energy bills
  • So long as the CoP is greater than 2, CO2 emissions will be lower than a conventional heating system thus reducing your carbon footprint and the effects of global warming
  • Improve your property's energy efficiency rating
  • Increase the value of your property
  • Increases your awareness of energy use and encourages more energy efficient behaviour
  • Low maintenance
  • Long lifetime (25 years or more)
  • Combined with an electricity-producing renewable technology, a solar PV system or wind turbine for example, this can become a complete renewable energy heating system.