Desk
Rules: planning, noise, F-gas, electrics, leases and servicing
The rules desk sets out planning limits, noise tests, certification and leak checks from the legislation and the bodies that run them.
5 chart pages · figures checked
- Rules
Planning permission for air conditioning, nation by nation
In England a house can take an outdoor unit 2.5 times the size a block of flats can - Rules
Air conditioning noise and neighbours: the 37 dB rule
Outdoor units we checked declare 56 to 65 dB(A) of sound power - Rules
F-gas certified installers, electricians and who does what
A Category 2 certificate stops at 3 kg of refrigerant, or 6 kg if sealed - Rules
Air conditioning in a leasehold flat or listed building
A block of flats gets 0.6 m³ in England and 1 m³ in Wales, against 1.5 m³ for a house - Rules
Air conditioning servicing: leak checks and owner jobs
Bigger refrigerant charges mean more frequent legal leak checks
| Chart page | Charts | Lead source |
|---|---|---|
| Planning permission for air conditioning, nation by nation | 3 | legislation.gov.uk, GPDO 2015 Sch. 2 Part 14 Class G |
| Air conditioning noise and neighbours: the 37 dB rule | 4 | Mitsubishi Electric UK, MSZ-LN R32 product information |
| F-gas certified installers, electricians and who does what | 4 | GOV.UK, Qualifications required to work on equipment containing F gas |
| Air conditioning in a leasehold flat or listed building | 3 | legislation.gov.uk, GPDO (England) Amendment Order 2025 |
| Air conditioning servicing: leak checks and owner jobs | 4 | GOV.UK, Checking F gas equipment for leaks |