Heat Pump Myths – DEBUNKED
Thinking about installing a heat pump but unsure what to believe?
With so much conflicting information online, it’s no surprise that many homeowners feel confused about how heat pumps actually work. From concerns about cold weather performance to running costs and installation, there are plenty of myths that can put people off making the switch.
In this guide, we break down the most common heat pump myths and explain the truth behind them – so you can make an informed decision with confidence.
Do heat pumps stop working when it’s cold outside?
No – heat pumps are specifically designed to work in cold weather. They extract heat from the air even when temperatures are below freezing. Modern systems can still operate efficiently at around -15°C or lower, which is colder than most UK winters ever get.
Are heat pumps only suitable for new builds?
Not at all. Heat pumps can be installed in existing homes, terraces, semis, and detached houses. Sometimes small upgrades like larger radiators or better insulation help maximise efficiency, but many homes can switch without major changes.
Are heat pumps really expensive to run?
They can actually be cheaper to run than gas boilers when installed correctly. Heat pumps are very efficient – typically producing 3 to 4 units of heat for every unit of electricity used. That efficiency can reduce energy bills, especially with good insulation and smart tariffs.
Do heat pumps make your house feel colder than a boiler?
No – they just heat homes differently. Boilers produce quick bursts of high heat, while heat pumps provide steady, consistent warmth. Many people find their home actually feels more comfortable and evenly heated.
Are heat pumps noisy?
Modern air source heat pumps are very quiet. The sound is similar to a refrigerator or a quiet fan. When installed properly outside the home, most people barely notice them running.
Do you need underfloor heating for a heat pump?
Underfloor heating works very well with heat pumps, but it’s not required. Heat pumps can run perfectly with radiators – sometimes installers simply recommend larger or more efficient radiators.
Do heat pumps take up a lot of space?
The units are situated outside and the size is dependent on the size of the property but many are roughly the size of an air conditioning unit. Inside, the system often replaces the boiler and may include a hot water cylinder if you didn’t already have one.
Do heat pumps only heat your home and not your hot water?
They do both. A heat pump can heat your home and your hot water cylinder, just like a boiler system.
Are heat pumps bad for the environment because they use electricity?
Actually, they’re much better for the environment. Because they’re so efficient and the UK electricity grid is becoming greener every year, heat pumps produce significantly lower carbon emissions than gas boilers.
Is installing a heat pump complicated and disruptive?
Installation is usually straightforward and typically takes a few days. Most of the work is outside or around the heating system, so disruption inside the home is minimal.
Heat pumps are quickly becoming one of the most popular heating solutions in the UK – and for good reason. They’re efficient, environmentally friendly, and suitable for a wide range of homes.
As we’ve covered, many of the concerns people have come down to outdated information or common misconceptions. When properly installed and set up, a heat pump can provide reliable, comfortable heating while helping to reduce both energy bills and carbon emissions.
If you’re considering making the switch, it’s worth exploring what options are available to you – including government-backed schemes that could significantly reduce the upfront cost or cover the cost completely.
Taking the time to separate fact from fiction is the first step towards choosing the right heating system for your home.
Gary is the Operations Manager at Fairway Energy and a specialist in renewable energy and technology, with over 15 years’ experience. He has in-depth expertise in energy-efficient measures for residential properties and UK government-backed grant schemes and funding.