It’s not just a case of putting the unit anywhere there’s space. A good install needs to consider airflow, pipe routes, drainage, noise, access and how the room is actually used.

Indoor unit placement

The indoor unit is usually mounted high on the wall. This helps air move across the room properly and avoids cold air sitting in one area.

Good indoor placement usually means:

• high on the wall
• good airflow across the room
• not directly above a bed or sofa if avoidable
• not blocked by cupboards or furniture
• a sensible route for pipework and drainage

Why airflow matters

If the indoor unit is badly positioned, you can end up with one part of the room too cold and another part still warm. Good airflow gives a more even temperature and helps the system run efficiently.

Outdoor unit placement

The outdoor unit also needs careful thought. It needs space around it for airflow and should be placed where it can be accessed for servicing.

• good airflow around the unit
• solid mounting or base
• sensible pipework route
• not too close to neighbours’ windows if avoidable
• access for future maintenance

Noise considerations

Modern air conditioning systems are generally quiet, but outdoor unit location still matters. A sensible position helps avoid unnecessary noise issues and keeps the installation looking tidy.

Bedrooms, offices and living rooms

Bedrooms often need careful placement so the airflow doesn’t blow directly over the bed. Offices are similar — nobody wants cold air blowing straight at them while working.

Living rooms usually benefit from positioning that gives good coverage across the whole space.

Drainage and pipework

Condensate drainage needs to be thought about from the start. Sometimes it can fall naturally, sometimes a pump may be needed. This can affect where the unit can sensibly go.

Final thoughts

Good air con placement makes the whole system work better. It improves comfort, helps efficiency and makes the finished job look much neater.