Built on 29.5 million UK property records
Your home's overheating risk, the right system, what it should cost and the planning rules, before you speak to an installer.
Top-Floor Flat
Islington
Summer overheating
High risk
Scored from this home's fabric, floor and aspect
The accreditations that matter for your job
UK homes were designed for cold winters, not 40°C summers. Top-floor flats, south-facing rooms, poor ventilation and dense streets turn a heatwave into a health problem, and a fan and an open window stop being enough by late June.
About
55%
of UK homes already fail the overheating test behind Part O
Only
5%
of UK homes have any cooling installed today
Record
40.3°C
the UK high, set in July 2022, and heatwaves keep coming
What your plan tells you
Every panel below is the checker's real output for one London top-floor flat. Yours is worked out the same way, from your own property.
Top-Floor Flat, Islington
80/100
High overheating risk
Fitted by an MCS installer
Typical installed price, before any grant
£3,700 to £4,255
Planning application likely
10.8p
an hour to cool two rooms, at the Ofgem price cap to December 2026
Most cooling advice starts from a brochure. Ours starts from the records behind your actual home, so the answer changes when the home does.
A Victorian terrace in Manchester
Find
Type an address and the checker matches it to its unique property reference number, then pulls everything already on record. No forms to fill in.
Source: Property records (UPRN)
Read
The EPC tells us about walls, roof insulation and glazing, which set how fast a room gains heat and how slowly it loses it at night.
Source: EPC register
Place
Dense streets store heat and stay warm overnight. Road noise and air quality decide whether you can simply sleep with the windows open.
Source: Noise and air-quality mapping
Check
Conservation areas, listed buildings and how the council has actually decided similar applications all change what you are allowed to fit.
Source: planning.data.gov.uk and council decisions
Model
Which way your main rooms face, and whether you would replace your heating. Then the checker scores the risk and works out the system, the cost and the route.
Source: The GetComfort cooling engine
Which one fits your home changes the system, the cost and whether the £2,500 grant is even in play. We are straight about both.
Replace your fossil-fuel heating and one system does both jobs - near-silent, room-by-room.
Keep your boiler and just add cooling - a simple private-pay install.
How it works
Type your address. We pre-fill what is already on record, so there are no long forms.
Check what we found, then answer the few questions only you can, such as how you heat your home today.
An overheating score, the right system, an honest cost and the planning rules, explained rather than sold.
Quick answers to the questions people ask before they call anyone. No sign-up, and nothing you type is stored.
The Boiler Upgrade Scheme pays £2,500 toward an air-to-air heat pump when it replaces your existing fossil-fuel or electric heating, via an MCS-certified installer. Our checker tells you honestly whether that is you - no guesswork.
We don't sell air conditioning and we're not paid to recommend a brand. When you're ready, we introduce you to one accreditation-matched installer (MCS for grant-eligible heat pumps, F-Gas / REFCOM for air conditioning), never a list that resells your details.
One exclusive lead
Your details go to a single accredited installer, not sold five times over.
No cold-calling
We only contact you if you ask us to. That is the law, and we like it that way.
Explained, not sold
Every score and verdict shows its reasoning so you can sense-check it.
Popular cooling guides
From the blog
Data
Days above 30°C, warm nights and cooling demand for UK areas now and at 2°C, 2.5°C and 4°C of global warming, from the Met Office UKCP18 local projections.
Common questions
Yes. The cooling checker is free and gives you a full property-specific plan on screen. You only ever share your details with an installer if you explicitly choose to.
No. We never contact you unless you ask us to, and your details only ever go to one installer you have consented to - never sold to a list. That is UK law (PECR), and our policy.
Only if an air-to-air heat pump replaces your existing fossil-fuel or electric heating, fitted by an MCS-certified installer. A cooling-only add-on that keeps your boiler does not qualify - the checker tells you honestly which applies to you.
Public property records (EPC and UPRN data). We use it to pre-fill the boring bits so you answer as few questions as possible - no surveillance, no long forms.
An air-to-air heat pump both cools in summer and heats in winter, and is the only cooling system the £2,500 Boiler Upgrade Scheme grant can fund - when it replaces your fossil-fuel or electric heating via an MCS-certified installer. A split or multi-split air conditioner cools your home but keeps your existing heating: it is private-pay and fitted by an F-Gas / REFCOM-registered installer. The checker recommends whichever genuinely fits your home.
They are indicative UK ranges from 2026 trade-guide data, adjusted for your property type and the number of rooms you want to cool - a realistic planning figure, not a fixed quote. Your matched installer confirms the exact price after a survey.
Often an outdoor unit is permitted development, but not always - flats, maisonettes, conservation areas and listed buildings have tighter rules, and units must meet noise limits. The checker gives an honest, property-specific indication and tells you plainly when to confirm with your local planning authority. We never claim certainty we cannot derive from your property data.
One installer, matched to your job and its accreditation - MCS for grant-eligible air-to-air, F-Gas / REFCOM for private-pay air conditioning. Your details go to that single installer only, never resold to a list, and only if you ask. You decide whether and when to proceed.
Modern air-to-air heat pumps move heat rather than burn energy, so they are far more efficient than old portable units and running costs are usually lower than people expect. Your plan shows an indicative running-cost band for your property.
No problem - the checker simply asks you to confirm a few details instead of pre-filling them, and you still get a full property-specific plan. Roughly a fifth of UK homes have no EPC on file, so this is a normal path, not an error.
Browse by area
Permitted development is applied borough by borough, and where you stand on the grant depends on what you heat with today. Both are answered for your area, not in general.
London
East Midlands
East of England
North West
South East
West Midlands
London
East Midlands
East of England
North West
South East
West Midlands
A plan for your property in about a minute. No pressure and no cold calls.
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