Heat pumps (ASHP)
Heat your home from the outside air — properly designed, honestly sized.
An air source heat pump heats your home and hot water using warmth pulled from the outside air — moving heat rather than burning fuel, so it delivers more energy than it uses. We design and size it from a proper heat-loss survey of your home, give you a fixed itemised price, and tell you straight whether it's the right move for your property.
Full heat-loss survey · Fixed itemised price · Hertfordshire
What an air source heat pump does
It moves heat from the air outside into your home
There's usable warmth in the outside air even on a cold day. An air source heat pump sits outside, draws in that air, and uses it to heat water that runs your radiators (or underfloor heating) and your hot water tank. It doesn't burn anything — it moves heat rather than making it, which is why it can deliver more heat energy than the electricity it uses.
It works differently from a gas boiler. A heat pump tends to run steadily at a lower temperature over longer periods, rather than blasting hot then off. For a lot of homes that suits how heating is actually used — but how well it fits depends on the property, so it's a job that has to be designed for your home, not fitted from a template.
Why it's efficient
More heat out than electricity in
Because a heat pump moves heat rather than making it, a good installation delivers roughly three to four units of heat for every unit of electricity it draws — where even the best gas boiler gives you less than one. That ratio is the whole point, and a proper design is what protects it.
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It moves heat, it doesn't burn it
Warmth from the outside air is pumped inside — no combustion, no flue, no gas standing charge.
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Low and steady beats hot-then-off
Run at a lower flow temperature over longer periods, it holds the house at an even temperature and keeps efficiency high.
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Sized to your home's heat loss
The right unit and radiators come from a heat-loss survey of your actual property, not a guess off the floor area.
The honest bit
Whether it saves you money depends on your home
A heat pump isn't automatically cheaper to run than gas. It depends on your electricity tariff, how well your home holds heat, the radiators you already have, and how the system is set up. Done well, in a reasonably insulated home on a sensible tariff, it can be cheaper and far lower-carbon. Done badly, it disappoints — which is how heat pumps get their mixed reputation.
So we won't hand you a headline saving off a brochure. We model it for your home, and if it doesn't stack up — or if a bit of insulation should come first — we'll tell you.
If your home and installer qualify, the government's Boiler Upgrade Scheme can take £7,500 off the cost. We'll confirm honestly whether you're eligible — we won't assume it.
How we do it
Done properly, and itemised in full
You see exactly what you're paying for — the unit, the cylinder and any radiator changes, the lot — no vague "system price" hiding the detail.
- A full heat-loss survey and design for your actual home
- The right heat pump and hot-water cylinder specified for it
- Radiator or pipework changes only where they're genuinely needed
- A fixed, itemised quote that doesn't move once issued
- Certified installation, commissioning and a proper handover
- Help with the Boiler Upgrade Scheme grant if you're eligible
Start with your own numbers
See whether a heat pump is right for your home
Start with a free analysis of your half-hourly data, then a proper heat-loss survey — real figures and a straight answer, before you commit to anything.
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