The external (outdoor) unit

Most split systems need an outdoor unit (the condenser) that releases heat outside when cooling. Where it can go often shapes what is feasible.

Siting considerations

• Wall, ground stand, or flat roof — mounted on a bracket or stood on the ground.
• Airflow and clearance — the unit needs space around it to work efficiently.
• Pipe run distance — longer runs to the indoor unit can affect performance and cost.
• Noise — modern units are quiet, but placement near a neighbour's window or a bedroom is worth considering. See noise.
• Appearance and permissions — visibility from the road can affect planning permission.

When outdoor space is limited

Where an outdoor unit genuinely cannot be sited, there are systems designed without an outdoor unit, though they suit specific situations.

An installer survey confirms the best position for your property. Request an installer match.