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Solar Heating in Brighton

Low Maintenance

'Fit and Forget' Technology

Deliver heat over longer periods at lower temperatures

Pays for itself relatively quickly

Air Source Heat Pumps

Heat your home with energy absorbed from the air around you

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

An air source heat pump extracts heat from the outside air in the same way that a fridge extracts heat from its inside. It can get heat from the air even when the  temperature is as low as -15° C. Heat pumps have some impact on the environment as they need electricity to run, but the heat they extract from the ground, air, or water is constantly being renewed naturally.

Benefits of Air Source Heat Pumps

Air source heat pumps (also known as ASHPs): could lower your fuel bills, especially if you are replacing conventional electric heating could provide you with an income through the government’s Renewable Heat Incentive (RHI) could lower your home’s carbon emissions, depending on which fuel you are replacing don't need fuel deliveries can heat your home and provide and hot water need little maintenance - they're called ‘fit and forget’ technology can be easier to install than a ground source heat pump, though efficiencies may be lower.

Unlike gas and oil boilers, heat pumps deliver heat at lower temperatures over much longer periods. During the winter they may need to be on constantly to heat your home efficiently. You will also notice that radiators won't feel as hot to the touch as they might do when you are using a gas or oil boiler.

Is an air source heat pump suitable for me?

To tell if an air source heat pump is right for you, there are a few key questions to consider:

Do you have somewhere to put it?

You'll need a place outside your home where a unit can be fitted to a wall or placed on the ground. It will need plenty of space around it to get a good flow of air. A sunny wall is ideal.

Is your home well insulated?

Since air source heat pumps work best when producing heat at a lower temperature than traditional boilers, it's essential that your home is insulated and draught-proofed well for the heating system to be effective.

What fuel will you be replacing?

The system will pay for itself much more quickly if it's replacing an electricity or coal heating system. Heat pumps may not be the best option for homes using mains gas.

What type of heating system will you use?

Air source heat pumps can perform better with underfloor heating systems or warm air heating than with radiator-based systems because of the lower water temperatures required.

Costs and Savings

Installing a typical system costs around £6,000 to £10,000. Running costs will vary depending on a number of factors - including the size of your home, and how well insulated it is, and what room temperatures you are aiming to achieve.

Savings

How much you can save will depend on what system you use now, as well as what you are replacing it with. Your savings will be affected by:

Your heat distribution system

If you have the opportunity, underfloor heating can be more efficient than radiators because the water doesn’t need to be so hot. If underfloor heating isn’t possible, use the largest radiators you can. Your installer should be able to advise on this.

Your fuel costs

You will still have to pay fuel bills with a heat pump because it is powered by electricity, but you will save on the fuel you are replacing.  If the fuel you are replacing is expensive you are more likely to make a saving.

Your old heating system

If your old heating system was inefficient, you are more likely to see lower running costs with a new heat pump.

Water heating

If the heat pump is providing hot water then this could limit the overall efficiency.  You might want to consider solar water heating to provide hot water in the summer and help keep your heat pump efficiency up.

Using the controls

Learn how to control the system so you can get the most out of it. You will probably need to set the heating to come on for longer hours, but you might be able to set the thermostat lower and still feel comfortable.

Earnings

You may be able to receive payments for the heat you generate using a heat pump through the government’s Renewable Heat Incentive (RHI). This scheme should be launched in Summer 2013.

Maintenance

Heat pump systems typically come with a 10 year warranty. You can expect them to operate for 20 years or more, however they do require regular scheduled maintenance. A yearly check by you and a more detailed check by Aquarius Solar every 3-5 years should be sufficient.

One of the yearly checks that you are likely to be advised to carry out is to check that the air inlet grill and evaporator are free of leaves or other debris. Any plants that have started to grow near the heat pump unit will also need to be removed.

To prevent the heat pump from freezing in cold winter weather anti-freeze is used. Levels of anti-freeze and its concentration is one of the things that we will check when we come to service your heat pump.

If your heat pump has external refrigeration pipes (very unusual for a domestic system) these will need to be serviced annually by a refrigeration engineer.

Planning permission

Air source heat pump installations In Wales and Northern Ireland require planning permission. In England and Scotland they may be considered Permitted Development, in which case you will not need planning permission, but the criteria are complex so it is always a good idea to check with your local planning office.

England

From 1st December 2011, domestic air source heat pump systems will be classed as Permitted Development provided that they comply with certain criteria, including:

- there is no wind turbine at the property

- the external unit is less than 0.6 m3 in size

- the unit is more than one metre from the edge of the householder's property

- it is not on a pitched roof, or near the edge of a flat roof

- it meets additional criteria if in a conservation area, World Heritage Site or similar

This list is not comprehensive. Read the full legislation at the government's legislation website or contact your local planning office for full details.

 

Information provided in conjunction with The Energy Saving Trust and Aquarius Solar Heating