Where Should You Install an Aircon? The SA Positioning Guide
Where you mount your aircon matters more than most people realise. A unit installed in the wrong position will cool or heat unevenly, run harder than it needs to, create uncomfortable draughts, and cost you more on your electricity bill. Get it right, and the same unit will be quieter, more efficient, and far more pleasant to live with.
This guide covers the best aircon placement for every room — bedroom, lounge, home office, and open-plan spaces — based on what we see working in South African homes every day.
Whether you're about to buy a new unit or you're reconsidering where your existing aircon sits, the principles here apply to all modern wall-split inverter units — Samsung, LG, Midea, Daikin, Hisense, Alliance, and others.
Before getting room-specific, these four principles apply everywhere:
Bedroom aircon placement generates the most questions — and the most problems when it's done wrong. Here are the four positions available in a typical bedroom, and what you need to know about each.
This is the most common installation mistake we see. Mounting the unit in the centre of the ceiling-adjacent wall, directly above the head of the bed, creates several problems:
Verdict: Avoid if any other wall is available.
The wall directly facing the foot of the bed is better than above the head, but still problematic in cooling mode — the aircon will blow cold air straight toward the bed across the room.
Verdict: Acceptable with careful louvre adjustment. Not ideal for light sleepers sensitive to airflow.
This is the position most AC Direct technicians recommend for bedroom installations. Mounting the unit on one of the side walls — to the left or right of the bed, at ceiling height — means:
Verdict: Best option in most bedroom layouts. Prioritise the side wall that minimises pipe run to the exterior.
A good second choice if side walls are not available. The foot-of-bed position allows the louvre to direct airflow left or right — missing the occupants entirely while still cooling or heating the room effectively.
Verdict: Good alternative to the side wall. Works well in most room shapes.
Lounge installations have more flexibility than bedrooms because people move around and aren't sleeping directly below the unit. That said, a few rules still apply:
Home offices add a specific concern: direct airflow onto screens (condensation, cooling effect) and onto the seated person (discomfort during long work sessions).
The outdoor unit (condenser) is often an afterthought — but its position directly affects how hard your aircon has to work.
| DO | AVOID |
|---|---|
| Place in shade where natural shade exists | Direct west-facing afternoon sun exposure |
| Allow 60 cm clearance above, 30 cm on sides | Enclosed brackets, boxes, or shade cages |
| Keep level and stable (concrete pad or brackets) | Installing directly on grass or soft ground |
| Minimise pipe run from indoor unit | Routing pipes through multiple load-bearing walls |
| Ensure drainage runs away from walls and foundations | Positioning so condensate pools against a wall |
One note on coastal and Highveld homes: coastal salt air accelerates fin corrosion on the condenser. If you're within 5 km of the ocean, specify a unit with corrosion-resistant coating — most manufacturers offer this as a factory option. On the Highveld, the primary enemy is dust accumulation on condenser fins during dry winter months. An annual clean before summer — preferably by a technician with a low-pressure coil cleaner — is the single best maintenance step you can take.
When you book an AC Direct installation, our team will confirm the optimal position for both indoor and outdoor units during the pre-installation assessment. Bring the following to that conversation:
Getting placement right before the first hole is drilled is significantly easier than moving a unit after installation.
Browse our full aircon range or book a professional installation and our team will guide you on the best position for your space.
Slug: /articles/best-aircon-position-bedroom/ Title: Best Position for an Aircon in a Bedroom Category: Product Help / Installation Reading time: 2 min
The best position for an aircon in a bedroom is on a side wall — to the left or right of the bed — at ceiling height. This directs airflow across the room rather than straight down onto sleeping occupants.
Mounting directly above the bed sends cold air (which can exit the unit at 6–10°C) straight down onto your face and chest. In heating mode, the unit creates an uncomfortable draught during rest cycles. Avoid this position if any other wall is available.
| Position | Best for | Watch out for |
|---|---|---|
| Side wall (left or right) | Most rooms — best airflow distribution | Pipe run length to exterior |
| Foot of bed | Narrow rooms with limited side wall | Ensure clearance from footboard |
| Opposite the bed | Acceptable with louvre adjustment | Airflow direction must be set away from bed |
| Above the bed | Avoid | Direct airflow onto face — discomfort, disrupted sleep |
For a full room-by-room breakdown, read the AC Direct Aircon Positioning Guide.
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The best position is on a side wall — to the left or right of the bed — at ceiling height. This directs airflow across the room perpendicular to where you sleep, avoiding direct cold or warm air on your face and body. It also gives the unit the best air distribution path across the full room.
Mount the unit on a side wall or at the foot of the bed, and set the louvre to direct airflow away from the bed. The 'above the bed' position is the most common cause of sleep-disrupting draughts, because cold air from the unit drops directly onto occupants. A side wall installation largely eliminates this problem without any louvre adjustment needed.
Yes, indirectly. A unit positioned above a door or window has to work against constant heat gain from outside, increasing runtime and electricity use. A poorly placed outdoor unit — in direct afternoon sun or enclosed without airflow clearance — runs hotter and draws more power. Correct placement of both the indoor and outdoor unit keeps your system operating at its rated efficiency.