Cooling Planner
Design your room.
Tell us about the space you actually want cooler. Your home updates as you go, and the numbers underneath show an honest UK install range plus running cost for a typical British summer.
What the numbers respond to
A south-facing room on a hot afternoon. The glazing has been collecting solar gain since lunchtime and the air is sitting at thirty-one.
How much heat the room actually gains
Floor area, ceiling height and glass orientation set most of the cooling load before any unit is chosen. A small south-facing bedroom often gains more heat than a large north-facing living room.
How much you can stop before it arrives
External shading, lighter blinds and a properly insulated loft reduce the load the system ever has to handle. Every kilowatt removed here is one you never have to specify, install or power.
How quietly the residual is handled
A correctly sized inverter split runs gently most of the time and barely registers on a sleep meter. Oversizing makes it noisier, not cooler.
Cooling load
2.2 kW
2.2 kW in this room
Install range
£1,800 – £2,800
Supplied & fitted, VAT in
Running cost
£62 / yr
230 kWh @ 27p
Noise indoors
19 dB
Whisper-quiet sleep range
Comfort gain
+14
Estimated score change
Pick a room
How big is the bedroom?
Typical UK bedroom is 12 to 16 m²; an open-plan living space tends toward 25 to 40 m².
Which way do the main windows face?
South-facing rooms gain the most afternoon heat; west-facing rooms feel worst late in the day.
Solution preference
House type
Your next step
Where this decision goes next.
Cooling is rarely a standalone fix. Insulation, ventilation and bedroom comfort all shape what good feels like.
Plan it
Solar Planner
Model UK solar payback against your real bill. Self-consumption, SEG export, battery option and lifetime savings.
Builds on what you just modelled.
Home Comfort Score
A 3-minute assessment scoring heating, cooling, air quality and efficiency; and a plan for what to fix first.
Builds on what you just modelled.
Understand it
Air Conditioning; the UK guide
Inverter splits, multi-split vs single, the kit, the install, the questions that catch installers out.
Builds on what you just modelled.
AC running costs in the UK
What it actually costs to run modern inverter AC across a British summer.
Builds on what you just modelled.
Bedroom AC; quiet, sized right
How to size, choose and price air conditioning for UK bedrooms.
Builds on what you just modelled.
Compare
Check the cost
Why it matters
Transparency
How we calculate this.
Last reviewed · June 2026
Method
Cooling capacity in kW comes from room area multiplied by a per-square-metre baseline that varies by room type (bedroom, living, loft, office, conservatory), then a glazing-orientation modifier. Costs map to typical UK installer pricing for single-split, multi-split or whole-house systems. Running cost equals seasonal cooling hours divided by an EER assumption, at UK electricity prices.
Sources
- REFCOM / F-Gas register; UK installer requirements
- Met Office; UK summer temperature trends
- Energy Saving Trust; Cooling and overheating
Assumptions
- Electricity price
- 27p / kWh
- EER (split AC)
- 3.8
- Cooling season
- ~400 hrs / yr
- Duty cycle
- 40%
Your Home Climate estimates are independent and indicative. They are designed to inform decisions, not replace a survey. Numbers can shift ±15–25% depending on installer, site access, and specification.