Are heat pumps worth it?

What is a heat pump, and how do they work?

A heat pump is a low-carbon heating system that works by transferring heat rather than generating it. Instead of burning fuel like a gas boiler, it extracts heat from the air, ground or water and uses it to warm your home.

There are a few different types of heat pumps, including:

• Air source heat pumps, which take heat from the outside air
• Ground source heat pumps, which draw heat from the ground
• Water source heat pumps, which use nearby water sources

Because they move heat rather than create it, heat pumps can be far more efficient than traditional heating systems like boilers.

Benefits of heat pumps

Low carbon

Heat pumps produce significantly lower carbon emissions than gas boilers because they don’t burn fossil fuels. This makes them a popular lower-carbon heating option and an important part of the UK’s move towards reducing emissions from home heating.

Efficiency

Modern condensing boilers are designed to meet A-rating standards, usually delivering efficiency ratings of 90% or more. However, heat pumps can have an efficiency rating of 350–450%, meaning they can produce more energy than they consume. An air source heat pump alone can reach efficiency ratings of up to around 350%.

This high efficiency rating stems from the way heat pumps transfer heat rather than generating it, allowing them to get more out of the energy they use.

Cost effective

Although heat pumps can be expensive to install, they are often more cost-effective over time thanks to their efficiency. Lower energy usage can help balance out the upfront cost, particularly when paired with a well-insulated home.

Longer lifespan

Heat pumps tend to last longer than traditional boilers. While a gas boiler typically lasts around 10–15 years, a heat pump can last 20–25 years with proper maintenance, making it a longer-term investment.

Financial incentives

There are government incentives available to help reduce the upfront cost of installing a heat pump.

In England, the Boiler Upgrade Scheme offers grants of up to £7,500

In Scotland, the Home Energy Scotland Grant and Loan offer grants that can reach £7,500, or up to £9,000 in rural areas

These incentives can make heat pumps more accessible for homeowners considering the switch.

Increased property value

Installing a heat pump can also increase the value of your home. Research suggests properties with air source heat pumps can see value increases of around 1.7% to 10%, as buyers increasingly look for energy-efficient homes.

Downsides of heat pumps

Initial investment

One of the biggest barriers to heat pumps is the upfront cost. Installing an air source heat pump can range from £2,400 to £14,050, whilst a ground source heat pump installation can range from £16,200 to £39,000. So while grants can help, it’s still a significant investment.

Space requirements

Heat pumps require outdoor space for the unit, as well as room inside for components such as a hot water cylinder. This may not be suitable for all properties, particularly smaller homes or flats.

Higher electricity bills

Heat pumps run on electricity, which can be more expensive than gas. However, their efficiency can help to offset this. You can also reduce costs by:

• Improving insulation
• Maintaining steady indoor temperatures
• Using off-peak tariffs
• Servicing the system regularly

Maintenance

Like any heating system, heat pumps need regular maintenance. Annual servicing is typically recommended and is often required to keep your warranty valid.

Lower heating capacity

Heat pumps operate at lower temperatures than boilers, which means they heat your home more gradually. To compensate, you may need larger radiators or underfloor heating.

Reduced performance in colder weather

Air source heat pumps can be less efficient in very cold conditions. However, in the UK climate, this is rarely a major issue, and modern systems are designed to perform well year-round.

Things to consider when getting a heat pump

Before installing a heat pump, it’s important to assess whether it’s suitable for your home.

Costs

Consider the full financial picture, including installation costs, available grants, running costs and long-term savings.

Space

You’ll need enough outdoor space for the heat pump unit and indoor space for components like a hot water cylinder.

Current insulation

Heat pumps work best in well-insulated homes. Improving insulation can make a big difference to performance and efficiency.

Existing heating system

Your current system matters too. Radiator size, pipework and layout may all need to be reviewed to ensure compatibility with a heat pump.

Should I get a heat pump?

Heat pumps can be a great option if you’re looking for a more energy-efficient way to heat your home. They offer long-term savings, lower carbon emissions and a longer lifespan than traditional boilers.

However, they’re not right for everyone. Upfront costs, space requirements and your home’s current setup all play a role in whether a heat pump is a good fit.

If you’re unsure, getting advice from a qualified heating engineer can help you make the right decision for your home.

Air source heat pump servicing you can count on

Once your heat pump is installed, keeping it running efficiently is key.

With HomeServe’s air source heat pump service plans, you can stay on top of maintenance and make sure your system continues to perform at its best. Regular servicing helps protect efficiency, prevent unexpected issues, and keep your home warm all year round.

Explore our heat pump service plans to find out how our experts can help keep your warranty valid, ensure your heat pump stays efficient, and stop bigger unexpected problems from cropping up with your heat pump.