Expert Air Source Heat Pump Installers
in Hampshire

If your heating bills keep climbing, your boiler is getting on in years, or you simply want a cleaner, lower-carbon way to heat your home, you are in the right place. Infinity Energy Services designs and installs air source heat pumps for homes across Hampshire, and we make the whole process straightforward from first call to final commissioning.

We have been installing renewable heating and energy systems since 2011, with more than 6,500 installations completed.

We are an MCS-certified heat pump installer – the accreditation you need for the government grant – and we are proud to have won best regional installer at the Energy Efficiency Awards in 2023, 2024 and 2026.

Based at Swanwick, near Southampton, we know Hampshire homes and the local network, and that local knowledge shows in every system we design.

Heat pump manufacturer logos

Why Hampshire homeowners choose us:

  • MCS-certified for heat pumps – required to claim your government grant
  • Trading since 2011 with over 6,500 installations completed
  • Energy Efficiency Awards Winner – 2023, 2024 and 2026
  • We handle your Boiler Upgrade Scheme grant application for you
  • Local, trusted Hampshire installer
Heat pump installers Hampshire

Call 0800 909 8882

with any questions or for expert advice

The £7,500 Boiler Upgrade Scheme Grant

Heat pump grant

The single biggest reason heat pumps are more affordable than most people realise is the government’s Boiler Upgrade Scheme (BUS).

It puts a minimum of £7,500 towards the cost of installing an air-to-water air source heat pump – the standard whole-home type that heats your radiators and hot water.

If you have either an oil or LPG boiler, the grant has just been upgraded further to a mighty £9,000 for installations from 21 July 2026.

The grant comes straight off your invoice, so you never have to pay the full amount upfront or wait to be reimbursed.

Who is eligible?

  • You own the property (homeowners and most landlords in England and Wales)
  • You are replacing a fossil-fuel system such as a gas, oil or LPG boiler, or an electric heating system that is not already a heat pump, for example storage heaters, panel radiators or an electric boiler
  • The property does not already have a heat pump

A valid Energy Performance Certificate is no longer required. As of 28 April 2026, a property no longer needs a current EPC to qualify for the scheme.

Where a valid EPC exists, we submit it as part of the application; where one does not, we provide alternative evidence on your behalf, such as a recent utility bill and photographs of your existing heating system.

Exclusions to be aware of

  • Most new-build properties are not eligible
  • Social housing is not eligible
  • Properties that have already received government funding or support towards a heat pump or biomass boiler are not eligible

We handle the application for you

Because the grant has to be claimed by an MCS-certified installer, you cannot apply for it yourself. We manage the entire Boiler Upgrade Scheme application on your behalf, including gathering the required evidence, so there is no complicated paperwork for you to deal with. The grant is simply deducted from your final invoice and you pay the balance.

0% VAT on top

Until 31 March 2027, residential heat pump installations attract 0% VAT. That saving is in addition to the grant, bringing the real-world cost down further still.

£9,000 for off-gas-grid oil and LPG homes

If your home is off the gas grid and currently heated by oil or LPG, a higher grant is on the way. From 21 July 2026, eligible off-gas-grid properties replacing an oil or LPG system with an air-to-water or ground-source heat pump will receive £9,000 rather than £7,500.

The uplift recognises that off-grid households face the highest fuel costs and have the most to gain from switching. Much of rural Hampshire is off the gas grid, so it is well worth checking whether your property will qualify – we can talk you through the timing and the detail.

Call 0800 909 8882

6,500+ Installations | MCS-Certified | Energy Efficiency Awards Winner 2023, 2024, 2026

What does a heat pump cost in Hampshire?

The honest answer is that it depends on the size of your home, how well it holds heat, and whether your existing radiators are suitable – which is exactly what the heat loss survey is for.

As a guide, though, here is what most Hampshire homeowners can expect.

Heat pump cost

What you actually pay after the grant

This is the figure that matters. With the £7,500 Boiler Upgrade Scheme grant deducted, most homeowners pay somewhere between roughly £3,500 and £6,500 for a typical installation.

Off-gas-grid oil or LPG homes claiming the £9,000 grant from July 2026 will usually pay even less. Every quote we provide shows the full price, the grant deduction and your net cost clearly, so there are no surprises.

The full installation cost before the grant

For transparency, a typical air source heat pump installation costs in the region of £11,000 to £14,000 before the grant is applied, depending on the size and type of property. The grant is then deducted from that figure to give the net cost above.

0% VAT

Residential installations carry 0% VAT until 31 March 2027, which is already built into the figures above.

Call 0800 909 8882

6,500+ Installations | MCS-Certified | Energy Efficiency Awards Winner 2023, 2024, 2026

Common concerns, answered honestly

These are the questions many homeowners naturally want answered before getting in touch. We believe it is better to be clear from the start, so you can make an informed decision.

Will it work in a UK winter?

Yes. Air source heat pumps are designed to extract heat from the air even in sub-zero conditions, and quality units continue to operate down to around –25°C. A Hampshire winter is comfortably within their range. The system is sized during the survey to keep your home warm on the coldest days of the year, not the average ones.

Will my home stay as warm as it is with gas?

Yes, when the system is properly designed. Heat pumps deliver heat at a lower, steadier temperature than a gas boiler, so the approach is to keep the home at a consistent comfortable temperature rather than blasting it hot and letting it cool. Done correctly, your home is just as warm – the difference you notice is more even, consistent heat.

Do I need new radiators?

Sometimes, but often not. Because a heat pump runs at a lower flow temperature, some radiators may need to be larger to give out the same heat. The heat loss survey tells us room by room which radiators (if any) need upgrading, so you know exactly where you stand before any work begins. Many homes need only a handful changed, and some need none.

Is it noisy?

No. Air source heat pumps are quiet in normal operation. As part of the design we carry out the MCS sound calculation for your property, and a compliant installation has to meet the noise limits set out under permitted development rules. So noise is assessed and controlled by design, taking into account the unit, its position and the distance to neighbouring windows.

How much outdoor space do I need?

Less than most people think. The outdoor unit is roughly the size of a washing machine and sits against an external wall, on the ground or on brackets. It needs a clear flow of air around it but does not need a large garden. We assess the best position during the survey.

Will it work in an older home?

Yes – older Hampshire homes are heated by heat pumps every day. The key is good design and, where it helps, sensible improvements to insulation and radiators. An older property may need a slightly larger system, which is precisely what the survey is for. Solid-wall Victorian terraces, period cottages and 1930s semis can all be heated successfully with the right design.

What about hot water?

An air-to-water heat pump heats your hot water as well as your home, storing it in a hot water cylinder ready for when you need it. If you currently have a combi boiler with no cylinder, we will include a suitably sized cylinder in the design and the quote.

Do I need planning permission?

Usually not. Since the rules were relaxed on 29 May 2025, most domestic air source heat pump installations in England fall under permitted development, meaning no planning application is required. There are some conditions – for example on listed buildings, in certain conservation areas, or for flats – and the installation must meet the MCS noise standard. We will confirm exactly where your property stands as part of the process.

Common concerns

Why a heat pump makes sense for Hampshire homes

Unlike solar, a heat pump does not depend on sunshine hours – it will perform well anywhere in the country. That said, there are good reasons Hampshire homeowners are switching now.

The combination of the £7,500 grant and 0% VAT means the cost of moving to a heat pump is lower today than many people expect, and both of those incentives are time-limited rather than permanent.

Hampshire also has a large stock of rural, off-gas-grid homes currently heated by oil or LPG, exactly the properties due to qualify for the higher £9,000 grant from 21 July 2026, and the ones that tend to see the biggest reduction in heating costs after switching away from expensive delivered fuel.

On top of that, replacing an ageing oil, LPG or gas boiler now – on your own timeline, with a properly designed system – is a great deal less stressful than replacing one in a hurry when it finally fails mid-winter.

Call 0800 909 8882

6,500+ Installations | MCS-Certified | Energy Efficiency Awards Winner 2023, 2024, 2026

Benefits of an air source heat pump

  • £7,500 government grant towards an air-to-water heat pump (£9,000 for off-gas-grid oil and LPG homes from July 2026)
  • 0% VAT on residential installations until 31 March 2027
  • Lower carbon emissions than a gas, oil or LPG boiler
  • Heating and hot water from a single system
  • Up to four times more efficient than a gas boiler
  • Fully compatible with solar PV for even lower running costs
  • No gas flame or combustion in the home
  • Backed by manufacturer warranties on quality equipment
Heat pumps benefits

Why choose Infinity Energy Services?

Choosing the right installer matters more with a heat pump than with almost any other home upgrade, because the quality of the system design determines whether your home is warm and your bills are low.

  • Trading since 2011, with over 6,500 installations completed
  • Energy Efficiency Awards winner in 2023, 2024 and 2026
  • Vaillant and Grant accredited installer
  • RECC, NICEIC, NAPIT, TrustMark and CHAS accredited
  • MCS certified – the accreditation required to claim your grant
  • Comprehensive insurance and full workmanship guarantees
  • Local Hampshire installer based at Swanwick, Southampton

We install premium Vaillant aroTHERM plus heat pumps and excellent-value Grant Aerona 290 units, and we will recommend the right one for your home and budget rather than a one-size-fits-all box.

The Infinity Team

Call 0800 909 8882

6,500+ Installations | MCS-Certified | Energy Efficiency Awards Winner 2023, 2024, 2026

Customer reviews

Discover why our customers chose Infinity Energy Services for their installation:

Our installation process

Discovery Call

Discovery Call

We start with a no-obligation conversation about your home, your current heating, your bills and what you want to achieve.

This is also your chance to ask us anything.

Heat loss survey and system design

This is the step that separates a proper installer from someone simply selling boxes.

We carry out a full room-by-room heat loss survey, then design a system sized precisely to your home – including which radiators, if any, need upgrading.

The quality of this stage determines how warm your home is and how low your bills are.

Heat loss
Installation

Professional Installation

Our MCS-certified engineers install and commission your system.

A heat pump installation typically takes three to five days – longer than solar – and we keep disruption to a minimum and your home heated throughout wherever possible.

After Care

We commission the system, show you how to get the best from it, register your warranties and complete your grant paperwork.

We are here for ongoing support and servicing long after the install is done.

After care

How an air source heat pump works

Everyone understands a gas boiler. A heat pump is less familiar, but the principle is simple. An air source heat pump extracts heat from the outside air – even on a cold day – concentrates it, and uses it to warm your home through your radiators or underfloor heating, and to heat your hot water.

The clever part is the efficiency. A gas boiler is, at best, around 90% efficient – you always get out a little less energy than you put in. A heat pump works the other way round: for every unit of electricity it uses, it can deliver around three to four units of heat, because most of the energy is being moved rather than created. That is why a well-designed heat pump can be up to four times more efficient than a gas boiler.

It runs on electricity, it has no flame and no combustion, and the only outdoor part is a single unit roughly the size of a washing machine sitting against an outside wall.

How a heat pump works

Areas we cover across Hampshire

From our base at Swanwick, near Southampton, we install air source heat pumps right across Hampshire, including:

  • Southampton
  • Winchester
  • Portsmouth
  • Basingstoke
  • Eastleigh
  • Fareham
  • Gosport
  • Andover
  • Aldershot
  • Farnborough
  • Havant
  • Fleet
  • Romsey
  • Petersfield
  • Alton
  • Whitchurch

If your town is not listed, please still get in touch – we cover the whole county.

Get your free Hampshire heat pump quote

– Takes 2 minutes, no obligation –

If you are ready to find out whether a heat pump could reduce your heating bills, lower your carbon footprint and replace an ageing boiler, we are ready to help.

We will show you exactly what an air source heat pump would cost for your home after the £7,500 / £9,000 grant – with no obligation and no pressure.

Call us today on 0800 909 8882 or fill in the form below, and one of our Hampshire heat pump specialists will be in touch.

2026 award