Since December 2011, the installation of an air source heat pump on domestic premises has been considered to be permitted development, not needing an application for planning permission, provided specified limits and conditions are met.
If you live in a listed building or a conservation area you should also contact your council to check any local policy.
Building regulations will normally apply to installing an air source heat pump.
It is advisable to contact an installer who can provide the necessary advice, preferably one who belongs to either the Microgeneration Certification Scheme or the relevant Competent Person Schemes.
For detached houses all work must adhere to the building regulations set out in Approved Document L: Volume 1 (Section 6, Page 45).
Air source heat pumps transfer heat from the air into a building to provide electric heating that generates hot water which can be used for space heating and/or hot water..