Install an Air Source Heat Pump

Enjoy a cosier, more efficient home — with £7,500 in government grants¹ plus exclusive savings through our group-buying scheme.

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What is an Air Source Heat Pump?

Trusted by over 200,000 households across England, air source heat pumps are a smart, eco-friendly way to keep your home warm and efficient—especially if you already have radiators or central heating.

It works a bit like a fridge, but in reverse; instead of keeping things cold, it works by drawing natural heat from the outside air , even in winter, and bringing it indoors. The result? A cosy home powered by electricity, using far less energy than a traditional gas boiler.

How Do Heat Pumps Work?

Benefits of Air Source Heat Pumps

Energy Efficient Home
Save Energy
Save energy and possibly reduce your utility bills. Heat pumps use 3–4 times less energy than a traditional boiler, more efficiently, keeping your home warm.
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Year-round Comfort
Keep your home warm all year, even when it’s -20°C outside. Heat pumps spread heat evenly, getting rid of cold spots and keeping every room at a steady, comfortable temperature.
Climate Change
Eco-friendly Heating
Reduce emissions and reliance on fossil fuels. Heat pumps don’t burn fuel, so they reduce your carbon footprint and make your home a cleaner, greener place to live.

Types of Air Source Heat Pump

When it comes to upgrading your heating system, air-to-water heat pumps are the most popular choice for good reason. They don’t just warm your home, they also provide hot water for your taps and showers.

Types of Heat Pumps

How Much Does an Air Source Heat Pump Cost?

Installing a heat pump usually costs between £12,000 and £16,000 — but most households pay far less.

Through the Boiler Upgrade Scheme, you could receive a grant of £7,500 or £9,000¹ towards your installation. Add Switch Together's group-buying savings, and your costs could come down to around £6,126 for a gas boiler switch, £5,302 for LPG, or £4,841 for an oil boiler switch². The good news? Most homes qualify³ for both.

Heat Pump Grants
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Air Source Heat Pump Installation

If you choose an air-to-water heat pump, the next step is getting it professionally installed, a process that’s usually faster and simpler than most homeowners expect. The full system includes a hot water cylinder and other key components, all carefully sized and configured to match your home’s layout and heating needs. Most installations are completed in just a few days with minimal disruption, so you can start enjoying the benefits of low-carbon heating.

How Are Heat Pumps Installed?

Accredited, Trusted, Switch Together-Approved

Our rigorous qualification process ensures all installers are MCS accredited and are members of a consumer code.

What is group-buying?
Certification installers

"We are feeling confident and happy with our heat pump, which works very well.

It was a very big project for us, but everything went smoothly, would highly recommend! "

Mick, Heat Pump owner in Essex, Switch Together participant

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Get a Heat Pump. See if Your Home’s Suitable

Now’s the perfect time to upgrade your heating. Most homes are suitable for a heat pump, and with Switch Together, you can access competitive prices and a £7,500 or £9,000 government grant¹ to cut your upfront costs, subject to eligibility.

Green Energy Contracts
1. Register Online

Tell us a bit about your home – it only takes a few minutes. This helps us prepare your free, no-obligation personal offer.

Personal Offer
2. Receive Your Personal Offer

You’ll receive a clear offer with estimated costs, potential savings, installer details, and warranty information.

Roof Survey
3. Home Visit

Your installer will visit to check everything is suitable and confirm the details in your offer.

Installation
4. Custom System Design

If you’re happy to go ahead, the installer will design a heat pump system that suits your home and heating needs.

Heat Pump
5. Installation & Support

Your system will be professionally installed, with strong warranties and aftercare support included for peace of mind.

How You Save More

Enjoy a warmer, greener home with help from trusted installers. With support from Switch Together, it’s easier and more affordable than ever. Alongside the government grant¹, you can save even more through group-buying⁴.

With Switch Together’s innovative group-buying model, you join forces with other homeowners to unlock lower prices—making greener heating more affordable for everyone.

What is group-buying?
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Ready to Upgrade Your Heating?

Join 3997 other households registered for our schemes.

Switch to gas‑free, low‑carbon heating and hot water for your home.

What Other Homeowners Think

Real stories from homeowners who made the switch to greener heating with Switch Together.

Best to use - James
James C. – Essex
“The whole installation process actually gave us increasing confidence in the scheme throughout. I’d been looking forward to this for a while, and it was installed so quickly. It’s fantastic to finally have new heating, and even better to now enjoy free hot water with our heat pump and solar panels.”
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Greg H. – Essex
“The process of signing up for Switch Together started online—we registered interest, then had an initial survey where they measured the house, did a floor plan, and worked out what we’d need. They came back with a proposal and price, and we booked the installation. It was all done within about two months.”
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Jodie E. – Essex
“The biggest benefit of having a heat pump for our household is having control over our heating and hot water.”
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Philip C. – Essex
“I decided it would be more beneficial to switch to a heat pump instead of replacing my boiler.  The investment felt like great value for the long-term efficiency and savings.”
Catherine H. – Essex
“Switch Together, in conjunction with the Boiler Upgrade Scheme, has saved us at least £4,000 compared to a quote received from a local company.”
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Federico – Essex
“Switch Together made it very easy to navigate making such a big decision.”

Frequently Asked Questions About Heat Pumps

Will a Heat Pump Work in Cold Weather?

Yes, air source heat pumps work efficiently in cold weather, even in UK winters. They extract heat from the air, even at temperatures as low as -20°C. Modern heat pumps are designed for colder climates, ensuring reliable heating all year round.

Learn more

Can a Heat Pump Replace my Gas Boiler?

Yes, a heat pump can replace a gas boiler, providing efficient heating and hot water. However, your home may need some adjustments, such as improved insulation and compatible radiators. A professional installer can assess your home’s suitability and recommend any necessary upgrades.

Learn more

What Are the Benefits of Air Source Heat Pumps?

Air source heat pumps offer several benefits, including:

  • Potential to lower energy bills compared to gas or oil heating

  • Reduced carbon footprint

  • Consistent, efficient heating throughout the year

  • Long lifespan and minimal maintenance

Is my Home Suitable for a Heat Pump?

Most UK homes can install a heat pump, but key factors include:

  • Good insulation to maximise efficiency

  • Space for an outdoor unit

  • Suitable radiators or underfloor heating

  • Space for a well-sized hot water cylinder

A professional survey can determine the best setup for your home.

Notes

¹Eligibility depends on the criteria set out by the Boiler Upgrade Scheme. Not all households will qualify.
²These are average post-grant costs from Switch Together's Essex and Surrey installations in 2026, calculated across all property types in our scheme (bungalow, detached/single-family, end-of-terrace, mid-terrace, and semi-detached) and the range of heat pump system sizes installed. Actual costs may be higher or lower depending on your property type and size, the heat pump system size you need, your existing heating system, and other factors.
³Over half of UK homeowners may be eligible for a government grant toward a heat pump — £7,500 for gas and electric households, or £9,000 for oil and LPG households. Approximately 54% of UK homes are owner-occupied, use fossil fuel heating, and have a valid Energy Performance Certificate (EPC).
⁴Group-buying savings are not guaranteed. Savings depend on the specific auction, the system, and your circumstances.