AIR SOURCE HEAT PUMPS

What is an air source heat pump (ASHP)?

Air source heat pump transfer heat from the outside air to water, which heats your rooms via radiators or underfloor heating. This makes them more efficient, since they deliver more heat energy than the electrical energy they consume. That makes the heat-pump system more efficient to run than a traditional fuel burning heating system. Heat pumps can also heat water stored in a hot water cylinder for your hot taps, showers and baths.

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Perfect choice for underfloor heating

Air source heat pumps (ASHP) a perfect match for your underfloor heating systems. Floors cover a much larger areas than radiators, so they don’t need to get as hot to provide the same amount of heat. If you have radiators in your home, and you are switching your heating system to an air source heat pump, you might need to upgrade your existing radiators.

Please book one of our engineers to give you professional advice about upgrading your heating system.

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Air source heat pump advantages


Long Lifespan

Modern air source heat pumps are able to work efficiently for close to 25 years before they need replacing.

Low Carbon Footprint

Air source heat pumps use the outside air to heat your home. You can significantly reduce your carbon emissions if you are switching from a gas, coal or electricity based heating system.

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Save Money on Energy Bills with ASHP

You can reduce your energy bills as you’ll be using the outside air for your heating system. Your savings will be even higher if you are switching from an electric or coal-based system.

Highly Efficient at Producing Heat and Hot Water

Depending on the air source heat pump, you can also use it to heat your water. To be able to heat water, the flow temperature needs to be approximately 55°C. If your system is only designed for space heating, the flow temperature will be 35°.

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Low Maintenance

Air source heat pumps are low maintenance, but there are a few things that you can do to ensure optimal performance of your heat pump. These include cleaning filters, occasionally checking for system leaks, checking refrigerant levels, etc. Servicing and maintenance should be done by a technician once a year by a certified installer.

Easy Installation Process

Installing an air source heat pump can take as little as two days. It is easier than installing a ground source heat pump. A domestic air source heat pump typically does not require planning permissions, however it is always advised to check with the local authority before you start your process.

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No Fuel Storage Needed

No fuel storage is needed with air source heat pumps, because the fuel used is the outside air. Compared to oil-fired boilers for example, you need to store the oil somewhere, which would take up extra space on your property. With air source heat pump you won’t have to pay additional fees for oil or wood pellets deliveries.

Please book one of our engineers to give you professional advice about upgrading your heating system.

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Frequently Asked Questions

If this happens, it might be a result of low pressure or blockage in the system, which is restricting the flow of water. In some cases, there could be a fault with a closed valve, thermostat or aa pump causing the water not to circulate properly. We recommend contacting us for assistance in diagnosing and repairing the fault by a Gas Safe registered engineer.
The most common causes of leaks and boiler dripping water are faulty internal components, this includes but is not limited to issues with corrosion, broken pressure valves, pump seals, or loosen pipe connections. We recommend calling out our Gas Safe registered engineer, who will diagnose and fix the problem for you and stop any potential dangers. You should never try to fix a boiler yourself, always call out for professional help.
Kettling sound from your boiler ( similar to a boiling kettle ) is usually caused by limescale or sludge buildup inside the system. It often happens in areas with hard water. The deposits build up in your boiler or pipes can block or restrict the flow of water inside the system, which can result in overheating and weird noise. It is best to treat this as soon as possible because it might result in more severe boiler damage and higher costs if your boiler needs replacing. We recommended calling our team as soon as you notice kettling sounds from your boiler. Our engineer will drain your central heating system and remove limescale and sludge buildup. For more information on this method, please visit our Power Flush section.
Worrying noises from the boiler are usually caused by low water pressure, a faulty pump or air buildup in the system. The type of sound in your system can narrow down the source of the problem. Banging noise could be a result of imminent pump failure, and this happens most often in old systems that have not been serviced regularly. We highly recommend contacting us to book our Gas Safe registered engineer for a professional diagnose of the problem as soon as possible.
The blue flame that always stays lit is called a pilot light. If this pilot light keeps turning off, it will stop your boiler from working. It can be caused by a broken thermocouple, which would stop the supply of gas to your boiler. Sometimes also the problem could be a draught blowing the pilot light out or a deposit built up in the pilot light. Always remember that you should never carry out any work on your central heating system. There is one thing that you could check yourself before calling out an engineer: Check if your other gas appliances are working and that your gas stopcock is on. You can always give us a call, and we will be more than happy to help you.
The most common causes for this to happen are faulty airlocks, diaphragms, motorised valves, thermostat or low level of water in the system. Your heating system might require a new part fitted to be working correctly again. Give us a call today for professional advice. If necessary, we will book a Gas Safe registered engineer for a professional diagnose of the problem as soon as possible.
It is straightforward to check the pressure of your central heating system; just take a look at the pressure gauge on your boiler. Low pressure ( below 1 ) will cause your central heating system not to work properly. It can be a result of a few potential reasons. Some of the reasons for this to happen could be a water leak in the system, recently bled radiators or a faulty pressure relief valve. We recommend contacting us for assistance.
All condensing boilers ( combi, system or regular ) have a condensate pipe transporting excess water away from the boiler. During winter it is common for the water to freeze and cause a blockage. If this happens, your boiler will most probably display a warning or a fault code. Feel free to give us a call; we will be happy to assist.
It might be a sign of a faulty thermostat when the heating is turning on and off when it is not supposed to. If your thermostat starts to malfunction or loses its accuracy, it will probably need to be replaced. Give us a call today for professional advice.
If some of your radiators are not getting hot, then they might need balancing. This procedure can also be done without the help of an engineer, but only if you feel confident doing it. If only the bottom of your radiator is getting hot then it might need to be bled, it is not a difficult task, and it does not require an engineer. In some other cases, there could be a build-up of sludge or air in your central heating system. Our professional engineers can remove this build-up by a process called Power Flush, and this is something that you should not try yourself.
All of our installers are fully trained, and qualified Gas Safe registered professionals.
We will recommend the best possible boiler for your needs, in terms of brands we mostly recommend Valliant and Worcester Bosch.
Harrison Heating has a team of professional engineers covering all of Hampshire. Most of our work so far has been carried out in the following areas: Southampton, Eastleigh, Fareham, Chandlers Ford, Whiteley, Winchester, Portsmouth, Winchester, Hedge End, West End, Botley, Romsey, Totton, Lyndhurst, New Forest, Hythe, Marchwood, Netley, Gosport, Twyford, Hamble, Holbury, Wickham, Titchfield, Nursling, Ringwood, Salisbury, Cosham, Waterlooville, Fair Oak and Lee-on-the-Solent.
Yes, we provide free quotes without obligation from your side to accept our quotation.
To give you the best and optimal solution we will need to know few details. For example, we will ask how many rooms and bathrooms you have currently or if you are planning any future extensions of your house.
In most cases, we can install your new boiler in the next working day. It depends on the current workload, so please give us a call as soon as possible if you are in a rush.
It usually takes one day to fit a new boiler by our professional installation team.
It is required by law that all servicing and gas safety checks are made by a Gas Safe registered engineer. It is also a condition of the warranty if your boiler is still under one.
We will do all possible safety checks, inspection and test all critical components to make sure your boiler runs safely, reliably and efficiently.
Please feel free to use our website to leave us a short feedback message. We are always happy to hear from customers about the outcome of our work. You can also read other customers reviews in the feedback section of our website.
Underfloor heating can be installed in most houses under almost any type of flooring. It gives you the option to have different zones heated and controlled independently. It comes very convenient in terms of managing heat distribution depend on which rooms are being used at the time.
Of course, you can! It is even recommended if the room is big enough, the area of heating can be split into sections. This approach works great with open-plan areas like kitchen diners.
Underfloor heating gives you the ability to warm up naturally cold ceramic or stone floors efficiently. It distributes the heat throughout the heated areas more equally compared to the radiators. Once installed, the underfloor heating requires less maintenance compared to central heating.
The underfloor heating gives you more control, increased comfort, better heat distribution, and it costs less to run. Underfloor heating provides a cleaner radiant heat causing less discomfort to asthma and dust allergies sufferers.