Flat living needs a different aircon plan
In a flat, the first job is not choosing the biggest unit. It is choosing equipment that cools the rooms you actually use without upsetting neighbours, tripping breakers or leaving pipework where it should not be. That is why apartment jobs need careful site assessments, especially where the balcony is small, the building has limits on outdoor unit placement, or the owner wants the bedroom cold at night without a lot of fan noise.
We work on flats in Mbombela, White River, Hazyview, Klerksdorp, Potchefstroom and Rustenburg, where conditions differ a lot. In the Lowveld, heat and humidity can push a small apartment hard in summer. In North West, sun exposure and afternoon heat load can be the main issue. A good plan takes both the unit size and the actual layout into account, rather than guessing from floor area alone.
Most flat jobs start with a wall split
For most one bedroom and two bedroom flats, a wall split is still the common choice. It is quiet, gives direct cooling where it is needed, and can be sized for a bedroom, open plan lounge or a combined living area. Smaller flats often do well with a 9 000 or 12 000 BTU unit. Larger open plan spaces may need 18 000 BTU or more, especially if the lounge gets afternoon sun or the kitchen opens straight into the living area.
We also supply cassette units for some apartments with suitable ceilings, but only where the ceiling space, drain fall and service access make sense. Portable units can work as a temporary option or where the body corporate does not allow a fixed installation yet, though they are not the best answer for daily use in a hot flat. A portable unit also needs a place for the exhaust, which many owners only realise after delivery.
- Wall splits for bedrooms and small living rooms
- Cassettes for selected ceilings with proper access
- Portable units for short term or rule-limited situations
- Replacement units where an old flat aircon has failed
Noise, neighbours and body corporate rules
Apartment aircon can cause trouble when the install ignores the building rules. Before any drilling starts, check whether the body corporate needs written approval, a sketch of the outdoor unit position, or confirmation that pipe runs will not cross common property in the wrong way. Some schemes are strict about visible brackets, balcony rail mounting and condensate discharge. In many complexes, the cleaner the install looks the fewer complaints later.
Noise matters as much as cooling. A unit that is too large for the room may short cycle and sound worse than a correctly sized unit running steadily. Outdoor position matters too, because a unit fixed near a neighbour’s bedroom window can become a source of complaints after load-shedding ends and everyone wants sleep. We look for positions with airflow, service access and decent acoustic separation from the next flat.
In coastal or humid parts of the Lowveld, corrosion can build up fast if the unit is exposed to rain and damp air. That means sensible mounting height, proper drainage and routine cleaning. It is a small thing, but in apartment work small things matter a lot.
How we plan a flat installation
The right layout starts with the room map. We check the room size, ceiling height, sun direction, where beds and couches sit, where the distribution board is, and where the outdoor unit can go without being in the way. Then we check whether the apartment has enough electrical capacity for the selected unit and whether a dedicated breaker is needed. Older flats sometimes need a careful look at the wiring before any new aircon is connected.
A tidy install usually means short pipe runs, a neat drain line, and controlled cable routing. The indoor head should not blow straight onto a bed or dining table. The outdoor unit should have enough air around it and not sit on a surface that sends vibration through the whole building. In some blocks a small error now becomes a long term rattle later.
- Measure the room properly, do not guess by square metres only
- Check breaker capacity and cable size before installation
- Keep pipe runs as short and straight as possible
- Plan for service access so filters and coils can be cleaned
Common flat aircon mistakes we see
One common mistake is oversizing. People think a bigger unit will cool faster, but in a flat it often gives poor comfort and more noise. Another is putting the indoor unit in the wrong place, such as above a doorway where the cold air disappears into the passage. We also see outdoor units squeezed into tight corners with no clearance, which causes poor performance and makes servicing harder.
Another issue is ignoring condensate drainage. If the water line is not planned properly, it can drip onto a balcony, a neighbour’s area or the outside wall. That leads to stains and complaints. A bad install can also leave the pipework too visible, which is never a good look in a neat apartment block.
For flats in places like Rustenburg or Potchefstroom where summer heat can be sharp and winter evenings cool down fast, a unit that is set up properly will give better year round use. It will also cost less to run, which matters when loadshedding or tariff jumps are part of everyday planning.
Budget ranges for apartment aircon
Flat budgets depend on the unit size, the pipe run, mounting complexity and whether electrical work is needed. For a simple bedroom wall split in a straightforward apartment, many customers budget from about R7 500 to R12 500 for supply and install, depending on capacity and conditions. A larger open plan flat can sit between R11 500 and R18 500, especially if the mount is awkward or the drain route needs extra work.
Portable units can cost less upfront, often from around R4 500 to R9 000, but they are usually not as efficient or quiet as a fixed unit. Replacement installations can vary if the old unit has to be removed, walls repaired, or pipework changed. We are upfront about what is included before the job starts, so there are no surprises on site.
If a flat only needs one room cooled, it may be better to do that room properly first and add another unit later. That is often the smarter choice for owners who are balancing cost, body corporate approval and day to day comfort.
