AER - Airtightness Testing Cymru

Mandatory airtightness testing for new build dwellings to comply with Part L of the UK Building Regulations.

See our Services page for fees and further information.

Airtightness testing for existing homes to pinpoint heat loss, guide improvements, and verifies retrofit effectiveness.

See our Services page for fees and further information.

Up to 40% of a home’s heat can be lost through air leaks. Our airtightness testing pinpoints problem areas, helping you improve comfort, cut energy bills, and verify the effectiveness of retrofit work.

Covering Ceredigion, Gwynedd, Carmarthenshire and Pembrokeshire.

Available to travel further if required.

Ar gael dros Geredigion, Gwynedd, Sir Gaerfyrddin a Sir Benfro.

Gallu trafeilio ymhellach os oes angen.