O · Glossary
Outdoor unit siting
Outdoor unit siting is the choice and recorded position of a heat pump outdoor unit, taking account of airflow, service access, sound, drainage, visual impact and planning or manufacturer constraints.
Outdoor unit siting is the choice of where an air source heat pump outdoor unit is placed outside a property and what constraints affect that position. In home energy documents it can cover clearances for airflow and service access, condensate drainage, sound at neighbouring assessment positions, appearance, boundaries, roof or wall limitations and the manufacturer's installation instructions. The term describes the siting check or design constraint.
Read the full knowledge-base article: Outdoor unit siting
Category
Building, planning and site constraints
Applies to
Heat pumps & AC
Last reviewed
09 Jun 2026