call us on
01349 877 029
call us on
01349 877 029

Air Source Heat Pumps

airsource

Air source heat pumps absorb heat from the outside air. This is usually used to heat radiators, underfloor heating systems, or warm air convectors and hot water in your home.

How do air source heat pumps work?

An air source heat pump extracts energy from the air outside the house in the same way that heat is extracted from the inside of a fridge.

Heat from the air is absorbed by a fluid which is pumped through a heat exchanger. This fluid passes through a compressor, and is concentrated into a higher temperature, capable of heating water for the heating and hot water circuits of the house. The process then repeats.

The pump can extract heat from the air even when the outside temperature is below freezing.

Unlike gas or oil boilers, heat pumps deliver heat at lower temperatures over much longer periods. This means that radiators should never feel as hot to the touch as they would do when using a gas or oil boiler.

There are two main types of air source systems:

  • An air-to-water system, which connects to your radiators or underfloor heating.
  • An air-to-air system, which produces warm air that is then circulated around your home by fans. Please note that this type of system isn’t usually used to produce hot water, and doesn’t qualify for Renewable Heat Incentive funding.

The benefits of air source heat pumps

  • Heat pumps can cut your home’s carbon emissions, depending on the fuel you are replacing.
  • No fuel deliveries required.
  • Can provide both heating and hot water.
  • Can lower fuel bills, especially if you are currently using conventional electric heating.
  • Sometimes easier to install than a ground source heat pump.

Is an air source heat pump suitable for my home?

To see if an air source heat pump is right for you, you should consider a few things:

Where will you put it?

You’ll need a place outside your house to put the unit: a wall, or space on the ground. It will need plenty of space around it to get a good flow of air. Planning permission will be required for this, and you should check with your local council.

Is your home well insulated?

Since air source heat pumps produce heat at lower temperatures than traditional boilers, it’s important that your home is well insulated and draught proofed. It could also make the system cheaper and smaller.

What kind of fuel are you replacing?

If you’re replacing an electric, LPG or coal powered system, an air source heating system will save you more on your heating bills. Heat pumps are not recommended for homes on the gas network.

What type of heating system will you use?

Underfloor heating systems, larger radiators or low temperature fan convectors (warm air heating) can perform better than standard radiator-based systems because of the lower water temperatures required.

Is the system intended for a new development?

The costs of installing the system can be lowered if you’re combining the installation with other building work.

Costs & savings

Installing a typical system will start from around £7,000. There are grants and loans available to help with these costs. Running costs will depend on a number of factors, including the size of your home and how well insulated it is.

Some of these factors are outlined below. It’s also important that the controls for the system are set according to your needs.

The heat distribution system

Underfloor heating provides greater efficiencies than radiators, because the water doesn’t need to be heated to such a high temperature. If underfloor heating isn’t an option, then use the largest radiators you can.

Fuel costs

You will still have to pay some fuel bills, because the heat pump itself is powered by electricity. The saving you achieve will be affected by both the price of the fuel you are replacing, and the price of the electricity for the heat pump.

Efficiency of old and new systems

The efficiency of the old heating system will have affected the cost of your energy bills. If the old heating system was inefficient, your bills could have been high, and so the difference between the new running costs and the old running costs will be bigger.

Temperature setting

It’s a good idea to set thermostats to somewhere between 18-21C. If you dramatically increase the temperature of your house after installing a new heat pump system, your heating bills will very likely increase!

Using the controls

We advise that you take some time and learn how to control the system, so you can get the most out of it. We will explain this before we leave, as well as providing a handover pack including manuals. We can also give you advice about how to control the system to make it most effective.

You can read about one of our air source heat pump installations in our case studies.

Ecodan Monobloc

Ecodan Monobloc

  • Self-contained unit, only requiring water and electric connections
  • No need for gas supply, flues or ventilation
  • Single phase power supply with a low starting current (3 phase available for 14kW)
  • Low maintenance and quiet to run
  • Operates with outside temperatures as low as -25ºC
  • Multiple unit connection
  • Bivalent function, for use with conventional boilers
  • 2-zone energy efficient space heating control
  • Available as a standalone, packaged or semi packaged system
  • 7 year warranty

Nibe F2040

NIBE™ F2040

  • Inverter controlled compressor
  • Compact design
  • Cooling function
  • Built-in condensate water tray
  • Cascade options
  • MCS Approved
  • 7 year warranty

Ecodan Monobloc

Ecodan Monobloc

  • Self-contained unit, only requiring water and electric connections
  • No need for gas supply, flues or ventilation
  • Single phase power supply with a low starting current (3 phase available for 14kW)
  • Low maintenance and quiet to run
  • Operates with outside temperatures as low as -25ºC
  • Multiple unit connection
  • Bivalent function, for use with conventional boilers
  • 2-zone energy efficient space heating control
  • Available as a standalone, packaged or semi packaged system
  • 7 year warranty

Nibe F2040

NIBE™ F2040

  • Inverter controlled compressor
  • Compact design
  • Cooling function
  • Built-in condensate water tray
  • Cascade options
  • MCS Approved
  • 7 year warranty

Find Us.

Black Isle Renewables Ltd,
Craig Road,
Dingwall, Ross-shire IV15 9LE
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Call us on
01349 877 029