Air Source Heat Pumps Explained, Costs, Benefits and Government Grants in the UK
With energy bills still a major concern for UK households, more homeowners are looking for long term, energy efficient solutions. Air source heat pumps are quickly becoming one of the most popular alternatives to traditional gas boilers.
But how do they work, how much do they cost, are there government grants available, and how much can you actually save?
Here is everything you need to know.
What Is an Air Source Heat Pump?
An air source heat pump is a low carbon heating system that extracts heat from the outside air, even in cold temperatures, and uses it to heat your home and hot water.
Instead of burning fuel like a gas or oil boiler, it transfers heat. This makes it significantly more energy efficient and environmentally friendly.
Air source heat pumps work best in well insulated homes and are ideal for homeowners looking to:
Reduce energy bills
Lower carbon emissions
Future proof their home
Replace an old or inefficient boiler
How Do Air Source Heat Pumps Work?
Air source heat pumps absorb heat from the outside air into a refrigerant fluid. This fluid is compressed to increase the temperature, and the heat is then transferred into your central heating system.
For every unit of electricity used, a heat pump can produce around 3 units of heat. This efficiency is known as a Coefficient of Performance, often around 300 percent efficient compared to traditional boilers.
How Much Does an Air Source Heat Pump Cost in the UK?
The average installation cost of an air source heat pump in the UK ranges between:
£8,000 and £14,000 depending on property size and system requirements.
Costs vary based on:
Property size
Existing heating system
Insulation levels
Radiator upgrades required
Hot water cylinder installation
Although the upfront cost is higher than a boiler replacement, government grants significantly reduce this.
Government Grants for Air Source Heat Pumps
The UK Government currently offers support through the Boiler Upgrade Scheme.
Boiler Upgrade Scheme Grant
Eligible homeowners in England and Wales can receive:
💷 Up to £7,500 towards the cost of installing an air source heat pump.
This grant is applied directly by your installer and reduces the upfront cost immediately.
In Scotland, similar support is available through Home Energy Scotland grants and loans.
Who May Be Eligible?
You may qualify if:
You own your property
You are replacing a fossil fuel heating system
Your home has a valid Energy Performance Certificate
Your property meets minimum insulation standards
Many households do not realise they qualify, so checking eligibility is always worth doing.
How Much Can You Save with an Air Source Heat Pump?
Savings depend on your current heating system, energy tariffs, and property efficiency.
Estimated annual savings compared to:
Old electric heating systems: £800 to £1,200 per year
Oil boilers: £400 to £700 per year
LPG systems: £300 to £600 per year
Modern gas boilers: Savings may be smaller, but protection from future gas price increases is a major benefit
Over 10 to 15 years, this can amount to thousands of pounds in reduced energy costs.
On top of bill savings, you may also benefit from:
Increased property value
Improved EPC rating
Lower carbon emissions
Reduced reliance on fossil fuels
Are Air Source Heat Pumps Worth It?
For many UK households, especially those off the gas grid or with older heating systems, air source heat pumps can be a smart long term investment.
With government grants covering up to £7,500, the technology has never been more accessible.
As energy prices remain unpredictable and the UK moves towards low carbon heating, installing a heat pump now can help future proof your home.
Take the Next Step Today
If you are considering an air source heat pump, now is the time to act. With government grants currently offering up to £7,500 in support, waiting could mean missing out on valuable funding.
Every home is different, and the amount you could save depends on your property, heating system, and eligibility for grants.
✔️ Check if you qualify for government funding
✔️ Find out how much you could save each year
✔️ Get clear guidance from trusted specialists
Complete our enquiry form today and see what support is available for your home.
There is no obligation, just straightforward advice and a simple path towards lower energy bills and a more efficient future.