The UK is at a crossroads when it comes to home heating. If the country is to meet its Net Zero targets, carbon emissions from domestic space heating must be eliminated by 2050. Yet around 85% of UK homes still rely on gas boilers, meaning 24 million households will need to make a change.
For gas boiler installers, this presents a huge opportunity, but also a challenge. Many homeowners remain hesitant about switching to a full heat pump system, concerned about cost, disruption, and performance in colder weather. This is where hybrid heat pump systems come in.
By combining an electric heat pump with a gas boiler, hybrids deliver the best of both worlds: affordable, lower-carbon heating for homeowners, and a clear growth path for installers. At Alpha, we believe there are five compelling reasons why hybrids are the future for boiler installers.
Homeowner hesitancy and the hybrid solution
The biggest barrier to installing a heat pump for most households is the upfront cost. A typical air source heat pump installation averages around £13,000, not including extra upgrades such as insulation, pipework, or new radiators. For many, that cost is simply too high, even with available grand funding.
Space and disruption also play a major role. Around 70% of UK gas-heated homes use a combi boiler with no hot water cylinder. Moving to a full heat pump system usually means installing a cylinder, and even homes that already have one often need a larger replacement. That’s not an easy ask for most homes, where space is often at a premium.
This is where a hybrid heat pump approach can work well. On average, they cost 30–40% less than a standalone heat pump system (typically under £9,000) and often avoid the need for extra home upgrades. In a hybrid system, the heat pump provides heating, while the boiler continues to supply hot water, removing the cylinder challenge.
Hybrids also perform well in harder-to-heat properties. During colder months or in older, less efficient homes, the boiler can work alongside the heat pump to deliver the extra power needed, ensuring comfort at all times.
For installers, this makes hybrid systems an easier sell: they remove the major homeowner objections of cost, disruption, and reliability.
1. The UK urgently needs more heat pump installers
The government has set a target of 600,000 heat pump installations per year by 2028. Current capacity falls far short. The Microgeneration Certification Scheme estimates there are only 4,000 qualified heat pump installers, while the UK needs closer to 35,000.
Gas engineers are ideally placed to help close this gap. Hybrid systems are a natural entry point because they build on skills installers already have – working with radiators, pipework, and heating controls – while opening the door to renewables.
For customers, hybrids are also easier to adopt, often costing 30–40% less than a full heat pump system and requiring less disruptive changes to the home. This means more households are ready to say yes, creating a bigger potential market for installers.
2. Government is changing energy pricing – making electric heating more attractive
Until now, electricity has been significantly more expensive than gas, leaving many homeowners reluctant to switch despite the efficiency of heat pumps. The Energy Prices Act (2022) is set to change that, gradually shifting levies from electricity to gas and closing the cost gap.
Hybrid systems are uniquely placed to take advantage. With smart controls, they can automatically switch between the boiler and the heat pump depending on which fuel is most cost-effective at the time.
For installers, this is a strong selling point: customers gain peace of mind that their system is not only low-carbon but also optimised for cost savings.
3. Hybrid heat pump systems can make the most of these changing prices
A key strength of a hybrid heat pump and boiler system is that it can automatically switch between ‘fuels’, depending on which is the most cost-effective at any time. This balance reassures customers who might worry about relying solely on a heat pump.
With the hybrid approach, it’s vital to work with an installer who understands the requirements of this dual system. Experienced gas installers are, therefore, well-placed to help customers make the most of this benefit.
4. Improved insulation makes homes better suited for hybrid heating
Government policy is driving improvements in insulation, which means more homes are becoming suitable for lower-carbon heating. But installers know that tighter, more energy-efficient buildings can create challenges if paired with a traditional high-temperature boiler alone – such as condensation or mould.
This is because boilers raise the air temperature quickly but can leave walls and windows cold – allowing condensation to form. Here, hybrids provide a better fit. With a heat pump system, the indoor air temperature rises slower, allowing interior surfaces to warm simultaneously, reducing moisture build-up and reducing mould risk. And because hybrids can also run at higher flow temperatures when needed, most homes can keep their existing radiators, avoiding the cost and disruption of upgrades.
This gives installers another strong message for customers: hybrids deliver comfort and efficiency, without forcing major renovations.
5. Gas installers already have the ideal expertise to deliver hybrids
Heat pump technology may differ from a gas boiler, but many of the skills in the installation are the same. With an air-to-water heat pump, there are still radiators (or underfloor heating circuits) to plumb. System controls such as thermostats are also the same.
And while a short training course can provide the basics of heat pump installation, the knowledge needed to balance a home heating system and advise domestic customers is not so easily acquired. So, experienced gas boiler installers can bring a lot to the table to ensure that heat pump heating systems work effectively and that customers know how to operate them.
These are essential points because happy customers who are confident that their heat pump system will provide the heating and hot water they need are more likely to provide good feedback and encourage others to switch from gas.
A future-proof opportunity
The UK will inevitably move away from fossil fuels, with gas power stations following coal into history. For installers, offering heat pumps as part of their range may not have been a consideration but this could be because there has been an ‘either-or’ attitude to these technologies. The hybrid approach offers the chance to lead customers through this transition offering a cost-effective, lower-carbon alternative today while building the expertise needed for tomorrow.
By championing hybrid heat pump systems now, installers can secure their place at the forefront of the UK’s heating future.
Book your Hybrid Heat Pump installation training with Alpha today