Air conditioning · Should I buy it?

Probably yes; but only if you fix the fabric first.

Primary question · Is air conditioning actually the right answer for my home; or am I about to spend £2,500 to mask a fabric problem?

Most overheating in UK homes is solved by some combination of: external shading, night purging, loft insulation top-ups and a quiet ceiling fan. Air conditioning is the right answer when those have been done; or when the room is genuinely uncoolable any other way (loft conversions, top-floor flats, west-facing bedrooms). Be honest about which group you're in.

The five questions
Is this right for me?

Any UK home where one or more rooms become unsleepable in summer, the owner plans to stay 3+ years, and there's a viable place to put the outdoor unit.

What will it cost?

£1,600–£3,400 installed for a single quiet split. Multi-splits scale roughly with output, not room count.

Advantages
  • Genuinely silent at low fan speed
  • Cheaper to run than people fear
  • Reversible; heats too
Trade-offs
  • Outdoor unit needs a sensible location
  • F-Gas certified install is non-negotiable
  • Aesthetic compromise on listed buildings
What to do next

Run the AC cost planner to estimate your specific number.

House Summary

Buy AC for the room you sleep in. Fix the fabric for the rest of the house. That order saves you more money and gives you more comfort than the reverse.

Next Step

Run the Home Comfort Score

It tells you which rooms most need cooling; and which don't.