AIR SOURCE HEAT PUMPS


Claim up to £7,500 towards your Air Source Heat Pump

The Boiler Upgrade Scheme is a UK government-backed grant helping homeowners switch to efficient, low-carbon heating.

You can receive up to £7,500 off the cost of installing an air source heat pump, making the upgrade significantly more affordable.

Why switch:

  • Lower energy bills long-term
  • Reduce carbon emissions
  • Future-proof your home against rising gas costs
  • Increase property value

Who can apply:

  • Homeowners in England and Wales
  • Properties with valid EPC
  • Replacing fossil fuel systems (gas, oil, LPG, electric)

How it works:

  • We assess your property
  • Confirm eligibility
  • Apply for the grant on your behalf
  • Install your new heat pump
  • Grant is deducted directly from your installation cost
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Start your upgrade today! Get your £7,500 grant before funding runs out.

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Air Source Heat Pumps

As the demand for cost-effective, eco-friendly heating solutions grows, air source heat pumps (ASHPs) are gaining popularity as an innovative way to keep homes comfortable year-round. Unlike conventional heating systems, ASHPs use renewable energy from the surrounding air to efficiently provide heat, helping homeowners reduce their energy bills as well as carbon footprint.

At Harrison Heating, we specialise in the installation, maintenance, and servicing of air source heat systems for domestic and commercial clients across Southampton and the surrounding areas, offering you a full-circle solution for greener heating.

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What are Air Source Heat Pumps?

Air source heat pumps are an efficient and versatile heating solution, using renewable energy from the outside air to provide reliable heating and hot water for homes and commercial buildings.

ASHPs are advanced heating systems that extract heat from the air outside—even when temperatures are low—and transfer it indoors. Using a compressor and heat exchangers, ASHPs amplify and distribute this captured energy to provide heating and hot water. In summer months, some systems can even reverse the process to offer cooling, making them versatile, all-season systems.

These systems are suitable for both new builds and existing properties, making them an excellent option if you’re looking to reduce reliance on fossil fuels without major structural changes.

With the right setup, air source heat pumps can lower your heating costs by up to 40% compared to conventional boilers.

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  • Eco-Friendly Heating: Air source heat pumps are powered by electricity, and because they transfer heat rather than generate it by combustion, they are significantly more efficient than traditional gas or oil boilers.
  • Lower Energy Bills: ASHPs can produce 3 to 4 kilowatt-hours of heat for every kilowatt-hour of electricity consumed, meaning they have an efficiency rate of over 300%! This high efficiency often results in significant savings on energy bills.
  • Year-Round Comfort: Many air source heat pumps feature reversible designs, allowing them to provide cooling in warmer months.
  • Eligibility for Financial Incentives: Homeowners in Southampton may be eligible for government incentives which can help offset the cost of installation. We can assist with the information you need to apply, helping you maximise savings.
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Professional Installation

At Harrison Heating, we believe in providing a comprehensive service. From initial consultation through to installation and ongoing maintenance, our goal is to make it easy for you to enjoy the benefits of an air source heat pump. Here’s how we can help:

Our team of experienced engineers specialises in air source heat pump installation, ensuring every detail is covered for optimal performance and longevity. We start with an in-depth site survey to assess your home’s heating needs and recommend the best system for your property.

Our skilled technicians handle every step with care, making sure the pump is installed correctly and in line with both manufacturer and industry standards. Proper installation is crucial for efficiency, so we work with leading brands to guarantee high-quality systems that perform as expected.

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Maintenance and Servicing

An air source heat pump is a long-term investment, and regular maintenance is essential to keep it running smoothly. At Harrison Heating, we offer flexible maintenance plans tailored to your system’s specific needs. Our technicians perform thorough inspections, covering the heat exchanger, compressor, and all essential components to prevent wear and tear and ensure the system is working efficiently. With routine maintenance, you can extend the life of your heat pump and avoid unexpected repair costs.

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Why Us?

When you choose Harrison Heating, you’re choosing a partner dedicated to sustainable, high-quality heating solutions. Our team brings over 40 years of experience, ensuring that every installation and service meets your expectations. Our engineers are fully certified, up-to-date with the latest in heating technology, and committed to delivering energy-efficient solutions for your home.

  • Experience and Expertise: Our team is skilled in handling all aspects of air source heat pumps, from initial selection to aftercare.
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  • Commitment to Sustainability: We believe in offering solutions that contribute to a greener future. Air source heat pumps are part of our mission to promote sustainable living for our clients.
  • Customer-Focused Approach: We tailor our services to meet your unique requirements, whether you’re looking for a simple install or a fully customised heating solution.
  • Affordable and Transparent Pricing: We provide clear, upfront quotes with no hidden charges, so you can make informed decisions about your heating investment.
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Is an Air Source Heat Pump Right for You?

If you’re considering making the switch to a more eco-friendly, energy-efficient heating system, an air source heat pump could be the perfect fit for your home. Ideal for well-insulated properties and compatible with underfloor heating and low-temperature radiators, ASHPs deliver reliable, comfortable heat throughout your home.

To get started, we offer a free, no-obligation consultation where we can discuss your heating needs, evaluate your property, and recommend a system tailored to your requirements. During this consultation, we’ll go over all aspects of the installation process, potential savings, and any government incentives that may be available.

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Make the Smart Choice for Your Home and the Environment

Choosing an air source heat pump is a smart step towards reducing your carbon footprint and embracing a more energy-efficient lifestyle. With our expertise, we make the process straightforward and hassle-free. From our first consultation to ongoing maintenance, Harrison Heating is with you every step of the way.

If you’d like to learn more or schedule your consultation, please don’t hesitate to contact us. Let’s work together to create a comfortable, eco-friendly home with the power of air source heat pumps!

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Suitable for Homes, Commercial Buildings & Churches

Air source heat pumps can be installed in:

  • Domestic homes
  • New build properties
  • Renovation and upgrade projects
  • Commercial buildings and offices
  • Churches and community buildings

Each system is designed specifically for the building, taking into account insulation, heat demand and usage patterns.

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Integration with Existing Heating Systems

Air source heat pumps can:

  • Work with existing radiator systems
  • Be combined with underfloor heating
  • Operate as a full replacement system
  • Be installed as part of a hybrid heating setup

We provide clear advice on whether an existing system is suitable or requires modification.

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Our Installation Process

  • Initial assessment Evaluation of the property, heating demand and existing system.
  • System design & recommendation Selection of a suitable heat pump system and configuration.
  • Professional installation Careful installation carried out by qualified engineers.
  • Testing & commissioning Full system testing and performance checks.
  • Handover & guidance Clear instructions on system operation and controls.

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Servicing & Maintenance

Regular servicing helps maintain:

  • System efficiency
  • Reliable operation
  • Long-term performance

We offer servicing and maintenance for installed air source heat pump systems, helping to protect your investment and ensure consistent heating.

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Fault Diagnosis & Repairs

If your air source heat pump isn’t working as it should, our repair specialists are here to help. We diagnose issues quickly and carry out repairs using high-quality parts and proven techniques. As technology advances, we also offer upgrade options, allowing you to add on newer features to your existing system or explore newer models with enhanced performance capabilities.

  • Fault diagnosis
  • Repairs where possible
  • Clear advice if further work is required

Our aim is to restore reliable operation as efficiently as possible.

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Get Advice on Air Source Heat Pumps in Southampton

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Get a Quote for Boiler Replacement in Southampton


If you are considering an air source heat pump for your property, contact Harrison Heating to arrange an assessment.

We provide clear, practical guidance and professional installation, tailored to your building and heating requirements.

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.