Heat Pump Cost Calculator — Discover How Much You Could Save in Minutes

Determine the actual cost of installing a heat pump, your anticipated running costs and how much you would save annually all within less than 2 minutes. Our cost breakdown calculator provides you with a customised cost estimate and contacts you up to four MCS certified installers to provide no obligation quotes.

Start Your Free Estimate →

•  Completely Free Service
•  MCS-Certified Installers Only
•  £7,500 Boiler Upgrade Scheme Grant Applied
•  No Commitment Required

Big Savings, Smart Heating

PS7,500 Government Grant is available via the Boiler Upgrade Scheme.
PS1, 000 + annual savings on heating bills.
As much as 300% efficiency over the traditional systems.
More than 50,000 UK houses have switched already.

Why Use Our Heat Pump Cost Calculator?

One of the best things that can be utilized to future-proof your home is switching to a heat pump. These systems produce three times as much heat energy as the amount of electricity they use, with up to 300% efficiency, and this will save you money, as well as cut down your carbon footprint.

Nevertheless, it can be disorienting in figuring out the true installation costs. They include equipment, installation labour, radiator upgrades, and government incentives. Our heat pump calculator was designed so that this could be easy.
You will in a few minutes have a complete and personalised breakdown with:

• The most appropriate size of the heat pump in your property.
• Full installation costs (equipment, labour, and any upgrades)
• Your £7,500 Boiler Upgrade Scheme (BUS) grant deduction
• Estimated yearly running costs vs. your current heating system
• Your annual savings potential
• Access to up to four trusted, MCS-accredited installers for quotes

Fast, Accurate & Effortless

Our online calculator removes the complexity of computing the cost of heat pumps.
You will have real world figures on the basis of the size, insulation and the existing heating configuration of your home- all on the spot.

Instant Results

Obtain a comprehensive cost estimate within less than 2 minutes -no protracted forms or delays.

Grant Automatically Included

We have included the PS7,500 government grant automatically to ensure that you see your actual out-of-pocket cost, rather than exaggerated costs.
Compare Energy Savings
Find out exactly how much cheaper heat pumps are to run than gas, oil, or electric heating.

Fully Vetted Installers

We connect you only with MCS-certified professionals — the industry standard required to qualify for government funding.

Calculate Your Heat Pump Costs Now

Answer 7 simple questions to get your personalized estimate.

Heat Pump Cost Calculator

Estimate Installation Costs with the £7,500 Grant

Find out your real installation cost, grant savings, and running costs in minutes.
Choose your system type below to get a tailored estimate.

Air-to-Water Heat Pump

The most popular choice.
Heats your radiators, underfloor system, and hot water using outdoor air — ideal for replacing gas or oil boilers.

Air-to-Air Heat Pump

Heats air directly, working like air conditioning in reverse.
Best for homes that need warm air rather than hot water.

Ground Source Heat Pump

Uses heat from the ground for higher efficiency and stable year-round performance.
Costs more to install but offers excellent long-term savings.

Other / Not Sure

Unsure which system suits your home?
Select this option to get free expert advice from certified installers.

How Our Heat Pump Calculator Works

We have made the calculator easy and very precise. It goes in the following steps:

Step 1: Tell Us About Your Property

We would like to know some basic details of your house and property, such as the type of house (detached, semi-detached, flat, etc.), bedrooms, and the level of insulation. It is based on these details that we are able to compute the optimal size of the heat pump that is needed.

For example:

• A well-insulated 3-bedroom semi-detached house typically needs a 9kW system
• A larger 5-bedroom detached property may need 12–14kW

With the right size, we can make you sure that you receive the right cost estimates and have not overcharged you an oversized unit.

Step 2: Tell Us About Your Current Heating System

The second point is to determine what you now use to heat your home, is it gas boiler, oil, LPG or electric. It is important here since what you are replacing determines the savings you will achieve.

Typical yearly savings:

• Gas boiler: £400–£600
• Oil or LPG: £1,000–£1,300
• Direct electric: Up to £1,500

By replacing fossil fuels you will not only save money but cut down the amount of carbon your home emits.

Step 3: Additional Work or Upgrades

The heat pumps also use low temperature water than the traditional boilers do, which implies that certain households may require larger radiators, or installing a new hot water cylinder.

We’ll ask if:

• You currently have large or standard-sized radiators
• You use a combi boiler (which may require a cylinder installation)
• You’ve recently upgraded your insulation
• This is to make sure that your estimation has all you need, there will be no unpleasant surprises on the day of installation.

Step 4: View Your Personalised Results

After responding to these few questions, our system automatically calculates your:

• Overall cost of installation (pre- and post-PS7,500 grant)
• Expected running costs per year
• Estimated payback period
• Projected annual savings compared to your existing system

You can also choose to be linked to up to four trusted MCS-certified installers that will provide you with a free, no obligation quote of your property.

Ready to See What You Could Save?

Join the thousands of homeowners who’ve already discovered how affordable heat pumps can be.

Use the Free Calculator Now →

Heat Pump Installation Costs Explained (2025 Guide)

The price of a heat pump installation may depend on the kind of property you have, the size of the property, insulation and the kind of system you settle on. The following is a summary of the factors that significantly affect cost.

1. Equipment Costs

The heat pump unit itself generally costs between £5,000 and £12,000, depending on the model, brand, and required output.

Typical examples:

• 2-bed flat (6kW system): around £5,000
• 3-bed semi (9kW system): £7,000–£9,000
• 5-bed detached (14kW system): £9,000–£12,000

Ground source systems are more expensive, typically starting from £14,000–£24,000, due to the underground loop installation.

2. Installation Costs

Professional installation costs generally range from £2,500–£4,000 for air-source systems.

This includes:

• Mounting and connecting the outdoor unit
• Integrating with existing radiators or underfloor heating
• Installing a hot water cylinder if needed
• Commissioning, testing, and certification

All installations are handled by MCS-certified engineers, which is essential for claiming government grants.

3. The £7,500 Boiler Upgrade Scheme (BUS)

The UK government provides a £7,500 grant through the Boiler Upgrade Scheme to encourage homeowners to switch from fossil fuels to renewable heat.

Eligibility highlights:

• Available to homeowners and landlords in England and Wales
• Applies to air source and ground source heat pumps
• Installer applies for the grant directly on your behalf
• Your upfront cost is reduced immediately

This grant significantly reduces the initial investment, making heat pumps far more accessible.

Estimated Running Costs in 2025

Running costs depend on how well your home retains heat and your local electricity rates (currently averaging around 27p per kWh).

Approximate yearly heating costs:

• Well-insulated 3-bed home: £600–£800
• Average 3-bed home: £800–£1,100
• Poorly insulated 4-bed house: £1,200–£1,500

In comparison, homes using gas typically spend £900–£1,400 per year, while oil and LPG systems can exceed £1,800.

This means that over 10 years, a well-matched heat pump could save £4,000–£10,000, even before accounting for rising gas prices.

Frequently Asked Questions

1. How much does a heat pump cost to install?

Most air source heat pumps cost £8,000–£18,000 before grants.
With the £7,500 Boiler Upgrade Scheme, homeowners usually pay £3,000–£10,500 total.

2. Are heat pumps cheaper to operate than gas boilers?

In most cases, yes. Although electricity costs more per kWh, heat pumps are 3–4 times more efficient, meaning they generate more heat per unit of energy.
A well-insulated home can cost around £600–£900 annually to heat, compared with £900–£1,400 for a gas boiler.

3. How long does it take for a heat pump to pay for itself?

Thanks to the £7,500 government grant, most households recover their investment within 4 to 10 years.
If you’re switching from oil or LPG heating, the savings are greater, and payback may happen in as little as 4–6 years.

4. Do I need to replace my radiators?

Sometimes. Heat pumps work best at lower temperatures, so larger radiators or underfloor heating may be needed in some rooms.

5. What size system will I need?

It depends on your home’s size and insulation:

• 1–2 beds: 5–7kW
• 3 beds: 8–10kW
• 4–5 beds: 12–16kW

Our calculator gives you an exact estimate.

Ready to See Your True Costs and Savings?

Join thousands of homeowners who have already discovered how affordable renewable heating can be. Our free calculator gives you instant, personalised results and connects you directly with trusted MCS-certified professionals for tailored quotes.

Try the Free Calculator Now

Disclaimer

Figures are based on average UK installation data and may vary depending on property characteristics, energy tariffs, and local installer rates.
The £7,500 Boiler Upgrade Scheme grant is available to eligible properties in England and Wales. All installer quotes provided are independent and non-obligatory.