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Guides for people still deciding
Written for anyone weighing up the cost and the rules before spending a penny. Every rule and figure was checked against its source on 5 November 2026.
Ask for a quote
Name, number and postcode. We ring you to go through it.
How much does air conditioning cost?
Unit prices, labour, electrics, running costs and the extras flats add.
Planning permission for air conditioning: when you need it
The permitted development conditions, with Croydon's exceptions.
Can you have air conditioning without an outdoor unit?
Monobloc units explained: what they do well, where they fall short.
Air conditioning in a flat: who has to say yes?
Leases, freeholder charges, the one-unit-per-block rule and office conversions.
Is bedroom air conditioning worth the money?
The 26°C rule, what to try first, fixed or portable, and what a night costs.
Cooling a loft conversion: what actually works?
Why lofts overheat, what Part O misses, and where the units go.
Which size of air conditioner is right for the room?
A room size table, the adjustments that matter, and why bigger is not better.
Checking an installer on the F-gas register
Company certificates, personal qualifications, and who issues them.
Portable or fixed: which air conditioning should you buy?
A fair comparison, including when the portable wins.
Want the short version? The FAQ page answers the usual questions on money, heating, fitting, consents and faults in a line or two each.
Prefer a call back?
Leave your postcode and a line about the room, and we ring you. Or ring 020 8194 3009.