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Smart home heating, explore air source heat pumps.

Take advantage of £7,500 government grant funding.

E.ON Next pink electricity spark illustration, holding a heat pump and smiling excitedly.

What is a heat pump?

Heat pumps are the latest in home energy tech. We all know about boilers, as millions of people throughout the UK use them to heat their homes, but, you might not have come across a heat pump before. 

What these do is take warmth from the outside air, or ground, and crank it up to heat your home. They give you hot water too, creating a cleaner, more efficient alternative to a gas boiler.

Heat pumps are a great way of making your home more sustainable by reducing your heating costs and carbon footprint. Did you know an air source heat pump is typically 3 to 4 times more efficient than older heating systems?¹ They're not just a lot of hot air!

Next Pumped: the energy tariff for air source heat pumps.

Pay less for your power not once, but twice a day every day. Perfect for running your heat pump.

  • Cheaper electricity from 10pm to 6am.

  • Save around £249 a year.

  • No exit fees.

  • Comes with 100% renewable electricity.

Find out more about affordable heat pump tariffs.

More on Next Pumped
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Why buy a heat pump from us?

Not only do we have £200 discount for E.ON Next customers, and flexible ways to pay, including 0% APR* finance options for up to 2 years, we also have the national accreditations for both boiler and air source heat pump installation services in the UK, giving you the reassurance you need when picking a sustainable heating solution for your home. T&Cs apply.

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Are heat pumps worth it, and are they right for my home?

The short answer: Yes! Heat pumps are a serious contender for any homeowner looking to ditch the fossil fuel habit. However, there are a few factors to consider.

Your home's insulation.

Heat pumps work best in well-insulated homes, where that lovingly produced warmth won't sneak out. It might be advised to get your home insulated before you go down the heat pump route. You may even be eligible for schemes that help with this cost, such as The Great British Insulation Scheme.

Space.

Air source units need a bit of outdoor space, but can happily sit next to an outside wall, or within a metre of your neighbour’s property. Whereas a ground source heat pump installation will involve a fair bit of digging for the pipework.

Upfront costs.

Prices for a new heat pump installation start from £12,000 before grant funding, for an average property. However, the great news is that you can dramatically reduce the price you pay by taking advantage of a government Boiler Upgrade Scheme (BUS) grant, which can take £7,500 off the installation price.2 Plus, as an existing E.ON Next customer, you'll get an exclusive extra saving of £200 off your installation. And don't forget those potential long term energy savings! T&Cs apply.

What types of heat pumps are there?

Heat pumps come in a few varieties, each with its own way of converting ambient temperatures into cosy heat.

Air source heat pumps.

These are the most popular types of heat pump. They pull in heat from the air outside into your home, and then boost it to the temperature you need inside.

Ground source heat pumps.

These heat pumps tap into the warmth stored underground. They use a bore hole, and a network of pipes to pull that natural warmth up into your home.

Explore the differences.

Water source heat pumps.

These extract warmth straight from a nearby water source, and work their magic to boost it up to the heat needed for your radiators and hot water needs, and provide a super-efficient way to heat your home.

What size air source heat pump do I need?

Choosing the right size air source heat pump (ASHP) is crucial for maximising efficiency and comfort in your home. The size you need depends on a few things, like your home’s size, insulation quality, and heating needs. Let's break it down.

Home size.

The size of your home is a major factor. Larger homes, such as a typical 4-bed house, will need a larger ASHP compared to a smaller home. We can help you determine the appropriate size you’ll need, usually measured in kilowatts (kW), to ensure your home is comfortably heated.

Insulation.

As you’ve probably guessed, well-insulated homes retain heat better, so you’d probably be ok with a smaller ASHP. If your home is older or not well insulated, you might need a more powerful unit to maintain a comfortable temperature. So, improving your insulation could mean that you’d need a smaller heat pump size, and it’d boost overall efficiency. Luckily, there are some schemes that could help you with the cost of insulation.

Hot water demand.

The hot water cylinder is sized to meet the hot water demand of your home. This is worked out by the number of bedrooms you have, and the amount of people who could potentially live there.

Professional assessment.

One of our qualified surveyors will conduct a heat pump survey to assess your home’s specific needs. They’ll consider factors like the size of your property, its current insulation levels and the local climate, to help them recommend the ideal ASHP size.

By choosing the correct air source heat pump, you ensure optimal performance, efficiency, and comfort. We're here to help you find the perfect fit for your home. Get an online quote for a professional assessment and personalised recommendations.

What are the benefits of air source heat pumps?

Heat pump for heating.

Ditch those old, inefficient and clunky heaters. Heat pumps deliver cosy warmth throughout your home and they're incredibly energy-efficient.

Smart heating at your fingertips.

Many heat pumps connect to smart apps so you can control the temperature from anywhere. Set schedules, save even more energy.

Heat pump grants.

If you live in England or Wales, the government’s Boiler Upgrade Scheme grant could take up to £9,000 off the cost of an air source heat pump installation if you have an oil or Liquefied Petroleum Gas (LPG) fueled home. You could still be eligible for the standard £7,500 grant if you have another home type.2 Learn more about heat pump grants available in the UK.

Energy efficient.

Heat pumps are the future of home heating tech, using way less electricity than those energy-eating traditional heaters. Heat pumps are around 3 to 4 times more efficient than traditional heaters1, which means they could help to lower your bills and they’re less strain on the planet – win-win!

Eco-friendly.

Since they're not burning fuel to create heat, heat pumps release far less emissions than gas heaters. A big thumbs up for the environment!

Read more about the advantages of an air source heat pump.

How does an air source heat pump work?

Well they kind of work like a fridge, only in reverse. Make sense? Heat pumps contain a liquid (a refrigerant) that absorbs heat from the outside air (even in temperatures as low as -20°C). The heat pump then compresses the liquid to increase its temperature and then transfers the heat to your heating system.

Air source heat pumps can heat your water up to 45-55°C, more than enough for your radiators and hot water. They do use a small amount of electricity to work. So why not choose our heat pump tariff, Next Pumped? Perfect.

Learn more on how heat pumps work.

How heat pumps work

Can a heat pump save you money?

Heat pumps can help you cut your energy bills as their running costs could be lower than your current heating system. An air source heat pump can give you up to 4 times more heat for each unit of energy used to power it, although your savings will depend on the fuel you currently use to heat your home and the efficiency rating of your boiler.1

You can also get funding schemes for heat pumps to help with the initial installation costs.

How much could I save switching to a heat pump?

Existing heating system

Annual fuel bill saving (£/year)

Old (G-rated) gas boiler

£490

New (A-rated) gas boiler

No significant changes

New electric storage heater

£1,200

Old (G-rated) oil boiler

£280

Old (G-rated) LPG boiler

£1,200

New (A-rated) LPG boiler

£550

Coal

£1,300

Potential annual savings are based on the installing of a standard air source heat pump in an average sized three-bedroom detached home. Savings are dependent on your property size, your household electricity usage, the current of any existing electric storage heater used and its age. Savings are dependent on the current oil/LPG system used, and their age. Figures are sourced from the Energy Saving Trust website.

Air source heat pump guides.

Wantto know more about heat pumps? Explore our handy guides.

Installing an air source heat pump at home: A smooth journey to cosy comfort.

So, you're ready to ditch the gas boiler and join the heat pump revolution? Here's a quick overview of what to expect during the heat pump installation process:

1Get an online quote.

Tell us about your home and we’ll recommend the best heat pump for you, as well as a tariff to go with it.

2Choose your heat pump.

See which heat pumps are suitable for your home and the equipment that we include as a standard part of a fixed price installation. We'll then check for BUS grant funding eligibility1 and take care of all the paperwork.

3Get a home survey.

We’ll carry out a heat loss assessment on your home to make sure your property has everything you need, so there are no hidden surprises.

4Get it installed.

We’ll install and certify your heat pump and, if you've chosen an E.ON Next tariff, switch your tariff over so you can make the most of your new heat pump and tariff combination.

Air source heat pump general FAQs.

Is an air source heat pump renewable energy?

Yes, air source heat pumps are considered renewable energy. They use heat from the air outside to warm your home, which is a sustainable and eco-friendly energy source. By switching to an air source heat pump, you’re helping to reduce your carbon footprint and promote a greener future.

Will a heat pump heat my water?

Yes, it will. The heat pump will heat the water and store it in the aptly named hot water cylinder. As part of the installation process E.ON check to see what size hot water tank will meet the needs of the house so you will always have enough hot water.

What heat pump do I need?

Tell us about your home in our online journey and we’ll recommend the best heat pump and tariff options for you, when you get an online quote.

Are heat pumps easy to use?

Yes, similar to a boiler. As part of the installation process, the heat pump system will be set up to suit your needs.

We recommend leaving it on a low but comfortable setting all day. You can turn it up on the heating controls if you need some extra warmth.

Are air source heat pumps suitable for old houses?

Absolutely! Air source heat pumps can be installed in older homes. They work efficiently even in properties with not much insulation. However, upgrading your home’s insulation is recommended first, as it can improve performance and reduce running costs.

What size air source heat pump would I need for a 4 bed house?

The size of the air source heat pump needed for a 4-bedroom house can vary, but generally, a unit with 8-12 kW capacity will do the trick. It’s best to get a professional assessment to ensure you get the right size for your specific needs and home layout, and we’ll do that when you get a heat pump with us.

Does an air source heat pump qualify for a tax credit?

Air source heat pumps may qualify for tax credits and other financial incentives. These benefits can help offset the initial installation costs, making it an even more attractive option for your home.

Does an air source heat pump qualify for the alternative fuel payment?

Applications for the Alternative Fuel Payment closed on 31 May 2023. This government initiative was designed to encourage the use of renewable energy sources, which helped homeowners save money while supporting sustainability.

Will my bills be cheaper with a heat pump?

If you've got an old, energy-guzzling system, then switching to an air source heat pump could save you money. Think of it like swapping a gas guzzler for a fuel-efficient car – less fuel in, more savings out.

I’m not supplied by E.ON Next, can I still get a heat pump?

Absolutely! You don’t need to be an E.ON Next energy customer to start your heat pump journey with us. We’re here to help everyone make the switch to more efficient, eco-friendly heating.

Can I access the full £9,000 BUS grant funding?

The Government has announced a temporary uplift in Boiler Upgrade Scheme funding for oil and Liquefied Petroleum Gas (LPG) fueled homes to support the rising energy costs. If your home is heated by one of these fuels, the full grant (£9,000) will be applied at checkout.

If your home is heated using another fossil fuel, such as natural gas, you may be eligible for the standard £7,500 grant.2

The enhanced grant is expected to be available until March 2027. To see the full eligibility criteria and exclusions, visit the Government Boiler Upgrade Scheme web page.

Air source heat pump technical FAQs.

When do you need to service a heat pump?

Heat pumps are like boilers, they need to be serviced annually. We recommend using a qualified heat pump engineer.

Can an air source heat pump replace a gas boiler?

Yes, an air source heat pump can certainly replace your gas boiler. It provides an efficient, environmentally friendly alternative for heating your home and providing you with hot water. Plus, it could lower your energy bills and reduce your home’s carbon emissions.

Can an air source heat pump run underfloor heating?

Definitely! Air source heat pumps are perfect for underfloor heating systems. They work well at lower temperatures, making them a great match for the consistent, gentle heat that underfloor heating provides.

Do air source heat pumps use a lot of electricity?

Air source heat pumps do use electricity, but they’re highly efficient. For every unit of electricity used, they can generate three to four units of heat. This efficiency could lead to lower energy bills compared to traditional heating systems, like gas and LPG.

Do air source heat pumps need servicing?

Yes, regular servicing of your air source heat pump is important to keep it running efficiently and to extend its lifespan. It’s recommended to have a professional service the pump annually to check for any issues and ensure optimal performance.

Are heat pumps noisy?

Not really. About as noisy as a microwave and a desk fan having a chat. You might hear a gentle hum when your air source heat pump is working its magic. It's kind of like a microwave doing its thing, with a little extra "whoosh" from the fan that brings in the warm air.

Now, we won't sugarcoat it – the sound can change a bit depending on how hard your heat pump is working.  Just like us, it might need to speak up a bit when it's got a lot on its plate. But here's the good news:

  • We usually install heat pumps outdoors, so you won't have to hear it humming away inside your home.

  • Before we even get started, we do a noise check to make sure everything's within the rules and won't bother you or your neighbours.

So, rest assured, your new heat pump won't be throwing any noisy parties. It's more of a quiet and efficient type.

Do heat pumps work when it's cold?

Absolutely. Heat pumps are designed to work in temperatures as low as -25°C, much colder than we usually see in the UK. We'll make sure your heat pump and radiators are the perfect size for your home, so you'll stay toasty all winter long.

Will a heat pump work as well as a gas boiler?

Yes, a well-designed and properly installed ASHP can match, or even surpass, the comfort levels of a traditional gas boiler. Unlike gas boilers that turn on and off with a fixed flow temperature, heat pumps operate with a lower flow temperature controlled by the outdoor weather. This means your heat pump adjusts to the external temperature, providing higher efficiency and consistent comfort.

Sometimes, you might need to upgrade or add a few radiators to get the best results since ASHPs work at lower temperatures. But don’t worry, we’ll discuss all this during our survey and design stage, so you’re fully in-the-loop.

What are the efficiencies of the ASHPs that E.ON installs?

All our ASHPs boast impressive efficiency ratings. The actual efficiency can vary based on factors like your property’s location, size, construction, and the types of radiators used. On average, you can expect a Seasonal Coefficient of Performance (SCOP) of around 3.5. This means for every 1kW of electricity your heat pump uses, it generates 3.5kW of heat. That’s roughly 350% efficiency, compared to even the most efficient gas boilers, which typically max out at around 95%.

Can you disconnect my gas supply when you remove my gas boiler?

If you're switching from gas, we'll take care of removing your old boiler. But you'll need to contact your gas supplier to disconnect your gas supply. If you're with E.ON Next, we can help you with that, so don’t worry.

Jargon busting.

SCOP: This stands for Seasonal Coefficient of Performance. It's a fancy way of measuring how much heat you get out of your heat pump for every bit of electricity you put in. Think of it like miles per gallon for your car.

MCS: This is the Microgeneration Certification Scheme. It's like a stamp of approval for heat pump installers, so you know you're getting quality work.

DNO: That's your District Network Operator, the folks who manage the electricity grid in your area. We'll check in with them to make sure everything's good to go.

The legal bit.

1 Potential annual savings are based on the installing of a standard air source heat pump in an average sized three-bedroom detached home. Savings are dependent on your property size, your household electricity usage, the current of any existing electric storage heater used and its age. Savings are dependent on the current oil/LPG system used, and their age. Figures are sourced from the Energy Saving Trust website and are based on fuel prices as of July 2025.

2 The Government’s Boiler Upgrade Scheme is valid for heat pumps that are commissioned from 1 April 2022. £9,000 funding is available for Oil or Liquefied Petroleum Gas (LPG) fueled homes, whilst other eligible properties can claim £7,500 in funding. Unfortunately, new build homes are ineligible for the Boiler Upgrade Scheme. Owner and property eligibility apply. To see the full eligibility criteria and exclusions, visit the Government Boiler Upgrade Scheme web page.

7 Pricing as of 09th June 2026. Super Off-peak hours of 22:00 - 06:00. Off-peak of 19:00 - 22:00 and 06:00 - 16:00. Peak hours of 16:00 - 19:00. 8 Next Pumped tariff saving calculations assume an electric consumption of 5,766.67 kWh, charging 21% of electric consumption during Next Pumped Fixed 12m V12 super off-peak hours (10pm-6am), 60% of consumption during off-peak (7pm to 10pm and 6am to 4pm) and 19% of consumption during peak hours (4pm to 7pm); compared to charging at 26.11p/kWh (national average rate and will vary by region) standard variable rate from 1 July 2026, which is equivalent to £249.62 saved compared to our standard tariff. Actual savings may vary depending on individual usage patterns. T&Cs apply. Pricing may vary by region. Please check your quote.

* E.ON Energy Installation Services Limited is a credit broker not a lender and work exclusively with HomeServe Finance Limited who acts as the lender under Firm Reference Number 994955. Any credit is subject to status, affordability and a credit check; HomeServe Finance Limited terms and conditions apply.

E.ON Next Energy Limited is an Introducer Appointed Representative of E.ON Energy Installation Services Limited and is authorised and regulated by the Financial Conduct Authority under Firm Reference Number 973651.

Zuno Partners Limited is an Appointed Representative of E.ON Energy Installation Services Limited and is authorised and regulated by the Financial Conduct Authority under Firm Reference Number 1043798.

E.ON Energy Installation Services Limited is authorised and regulated by the Financial Conduct Authority for credit broking services under Firm Reference Number 750410. Registered in England and Wales under company number 09965944 at Trinity House, 2 Burton Street, Nottingham, NG1 4BX.