January is when many homeowners start planning ahead. With heating bills still fresh in mind and long-term energy costs uncertain, it’s natural to ask whether sticking with a gas boiler still makes sense — or whether it’s time to think differently about how your home is heated.
For many UK households, the biggest question isn’t whether heat pumps work, but whether switching now is realistic. Grants, running costs, and payback all play a role. This article explains what support is available, how to think about value beyond simple payback, and how to decide whether 2026 could be the right time to make the move.
What support is available for UK homeowners?
The UK Government currently offers financial support to help homeowners switch from fossil fuel heating to renewable systems through the Boiler Upgrade Scheme (BUS).
Under the scheme, eligible homeowners in England and Wales can receive a £7,500 grant towards the cost of installing an air source or ground source heat pump. The grant is applied at the point of installation, reducing upfront costs rather than being claimed later.
The scheme has been extended with a funding allocation of £295 million for 2025–26, helping ensure continued access for households planning ahead rather than rushing into a decision.
For many homeowners, this support is the difference between heat pumps feeling “out of reach” and genuinely achievable.
How much does a heat pump cost after the grant?
Installation costs vary depending on property size, heat demand, and system design. However, UK consumer research suggests that a typical air source heat pump installation costs around £12,500–£13,000 before grants.
Once the £7,500 BUS grant is applied, the remaining cost can be closer to £5,000–£6,000 for many homes — comparable to other major home improvements such as a new kitchen or bathroom.
It’s also important to consider that heat pumps typically last longer than gas boilers and have fewer moving parts, which can reduce maintenance costs over time. When viewed over the full lifespan of the system, the upfront cost often looks very different.
A real example: how some homeowners can upgrade with no upfront cost
To make the numbers more tangible, it helps to look at a real-world example.
At Adlår Castra UK, our most affordable air source heat pump installation starts from £6,999 under our standard installation package. With the £7,500 Boiler Upgrade Scheme grant, this means that eligible homeowners could upgrade their heating system and receive £500 cash back once the grant is applied.
This makes it possible, in the right circumstances, to move away from a gas boiler with no upfront installation cost — something that would have seemed unrealistic just a few years ago.
It’s important to note that this pricing is based on a standard installation scenario, which allows us to keep costs low while maintaining high-quality design and workmanship.
What’s included in Adlår’s standard installation package
Our standard package assumes the following:
- Aurora II floor-mounted heat pump, installed within 5 metres of the existing boiler flue
- External pipework neatly finished in trunking
- Fjord hot water cylinder installed in the existing cylinder cupboard
- Existing hot and cold feeds and pressure relief drainage already in place
- 160mm cylinder ventilation already present
- All electrical works included
- No radiator or emitter upgrades required
- Boiler Upgrade Scheme grant approval included
- A full home energy assessment and heat loss report carried out by Adlår’s in-house team
Any additional works — such as radiator upgrades, altered pipe routes, or changes identified during the heat loss assessment — would be discussed following a site survey, ensuring homeowners have a clear understanding of costs before proceeding.
This approach ensures there are no surprises, and that every system is designed to perform efficiently and comfortably once installed.
Payback isn’t just about money
Energy security and future-proofing
Traditional payback calculations focus purely on years to recoup the installation cost through energy savings. While this matters, it doesn’t capture the full picture.
Gas prices remain volatile, and long-term reliance on fossil fuels exposes households to ongoing uncertainty. Heat pumps, by contrast, rely on electricity — which is becoming cleaner and more stable as the UK grid continues to decarbonise.
By switching, homeowners reduce their exposure to gas price spikes and future-proof their heating system against policy and market changes.
Comfort, reliability and fewer breakdowns
Heat pumps provide steady, low-temperature heat that keeps homes at a more consistent and comfortable temperature. Many households report fewer cold spots and less need to constantly adjust thermostats.
There’s also a reliability benefit. With fewer mechanical components than a gas boiler, heat pumps tend to experience fewer breakdowns over their lifetime. This can mean lower stress, fewer call-outs, and more predictable running costs — particularly valuable during winter.
Is your home suitable for a heat pump?
Not every home is the same, and suitability depends on a few key factors.
Insulation plays a major role. Homes that retain heat well allow heat pumps to run efficiently at lower temperatures. However, this doesn’t mean a home has to be perfect — many typical UK properties can work well with modest insulation improvements.
The size and layout of the property also matter, as does the existing heating system. A proper heat loss calculation is essential to determine whether a heat pump will perform efficiently and comfortably.
This assessment stage is where expert advice makes the biggest difference.
Clearly understanding the carbon benefit
Alongside cost and comfort, many homeowners are motivated by environmental impact. According to the Energy Saving Trust, replacing an older G-rated gas boiler with an air source heat pump in a typical semi-detached home could reduce carbon emissions by around 2,900 kg of CO₂ per year.
As the electricity grid becomes greener, these savings increase automatically — without any further changes from the homeowner.
Take the first step with expert guidance
Deciding whether 2026 is the right year to switch isn’t about pressure or deadlines. It’s about understanding your home, your costs, and your long-term goals.
At Adlår Castra UK, we help homeowners make informed decisions through detailed surveys, honest advice, and expertly designed air source heat pump systems. Our team works across Surrey and the surrounding areas, ensuring every system is tailored to the property — not forced to fit it.
If you’re planning ahead and want to know whether a heat pump could work for your home, now is the ideal time to explore your options with confidence.
