Aircon installation in Cape Town covers a first-time install where there was no air conditioning, or a replacement unit going onto an existing position. Most of it is wall-mounted split systems, and most of the price sits in the installation rather than the box.
This site is not an installation company. Describe the job once and aircon installers covering your suburb quote you directly.
Send the room size, the wall you want the indoor unit on, and where the outdoor unit can go. That is enough for an installation quote.
Get Installation QuotesWhat Size Aircon Do I Need?
BTU is the rating that matters. Room size sets the starting point and everything else moves it.
| Capacity | Typical room size | Usually suits |
|---|---|---|
| 9000 BTU (2.5 kW) | 12 – 18 m² | Bedroom, small study, nursery |
| 12000 BTU (3.5 kW) | 18 – 28 m² | Main bedroom, small lounge, small office |
| 18000 BTU (5.0 kW) | 28 – 45 m² | Living room, open-plan kitchen-lounge |
| 24000 BTU (7.0 kW) | 45 – 65 m² | Large open-plan, shop floor, boardroom |
Room area alone is not a calculation. These move the answer, sometimes by a full size step:
- Ceiling height. A 3.2 m ceiling is roughly a third more air than a 2.4 m one.
- Glazing and sun. West-facing glass in Cape Town is the single biggest swing factor.
- Insulation, roof type and whether there is a ceiling void above.
- Occupants. Each person is roughly 100 W of heat sitting still.
- Equipment. Servers, kitchen appliances and display lighting all add load.
- How the room is used. A bedroom and a home office with two screens are not the same load.
Oversizing is not the safe option. A unit too large for the room cools fast, switches off, and never runs long enough to pull humidity out. You get a cold clammy room, short cycling and a shorter compressor life. Ask any installer quoting a size to say what it is based on.
How the Installation Works
- Positions agreed for the indoor head and the outdoor condenser, and the pipe route between them.
- Core hole drilled through the wall for the pipework, drain and interconnecting cable.
- Bracket fixed, indoor unit mounted, condenser set on brackets or a ground stand.
- Copper refrigerant lines run, flared and connected, drain line set to fall.
- System vacuumed to remove air and moisture, then released and pressure-tested.
- Electrical connection to a dedicated circuit with an accessible isolator.
- Commissioning: temperature split checked, drain tested, remote paired.
The vacuum step is the one that gets skipped on cheap installs. Moisture left in the lines turns acidic with the oil and kills compressors years later. It costs the installer half an hour and it is invisible on the day.
Back-to-Back and What Drives the Price Up
A back-to-back install puts the outdoor unit directly behind the indoor one, with a short pipe run through a single core hole. It is the cheapest installation there is, and the baseline every quote is priced against.
| Condition | Effect on price |
|---|---|
| Back-to-back, ground floor, brick wall | Baseline |
| Long pipe run (over ~3 m) | Charged per extra metre of copper, plus labour |
| Concrete or double-brick core drilling | Higher per hole, slower |
| Condenser above ground floor | Ladder work, scaffold or rope access |
| No gravity fall for the drain | Condensate pump needed |
| No spare way on the DB | New circuit, breaker and isolator |
| Pipework must be boxed or trunked | Extra material and finishing time |
Aircon Installation Prices in Cape Town
Indicative market ranges for supply and installation, standard back-to-back, inverter split unit. They are here to sanity-check a quote, not to hold anyone to.
| Job | Indicative range | Notes |
|---|---|---|
| 9000 BTU supplied & installed | R9,500 – R15,000 | Entry to mid-range inverter split |
| 12000 BTU supplied & installed | R11,000 – R17,500 | The most common domestic size |
| 18000 BTU supplied & installed | R15,000 – R24,000 | Heavier unit, heavier bracket |
| 24000 BTU supplied & installed | R19,000 – R32,000 | Often needs a dedicated circuit upgrade |
| Installation labour only | R3,500 – R7,500 | You supply the unit, back-to-back install |
| Extra copper pipe | R350 – R650 per metre | Insulated pair, supplied and run |
| Core drilling, brick | R450 – R950 per hole | Concrete is roughly double |
| Dedicated circuit and isolator | R1,800 – R5,500 | Depends on the run back to the board |
| Condensate pump | R1,800 – R3,500 | Where the drain cannot fall naturally |
| Decorative trunking | R200 – R450 per metre | Instead of exposed lagged pipe |
| Access equipment | R2,500 – R12,000 | Scaffold, cherry picker or rope access |
Indicative Cape Town ranges, not a quotation. Brand, inverter or fixed-speed, pipe length, condenser position, drilling, electrical work and access move the final number materially. Two honest quotes on the same room can differ by thousands because one has read the access correctly.
Get the number for your actual room rather than a range. Free, and no obligation to appoint anyone.
Compare Installation PricesResidential and Commercial Installation
Domestic work is mostly single splits, priced per unit, usually done in a day. Commercial work is priced as a system: cassettes or ducted heads, multiple zones, after-hours access, ceiling coordination and often a handover pack. If you are quoting a business premises, say so upfront — it changes which contractors are appropriate and how the quote is structured.
Comparing Aircon Installation Quotes
- Check the sizing is the same. A cheaper quote on a smaller unit is not a cheaper quote.
- Check the pipe allowance. Most include up to 3 m. Beyond that it is charged, and it is the most common surprise.
- Check who does the electrical work and whether a certificate is issued for it.
- Check the warranty split. The manufacturer covers the unit; the installer covers the workmanship. These are separate, and the second one is what protects you against a bad flare or a skipped vacuum.
- Check what is left behind. Rubble, the old unit, and the state of the wall finish.
Frequently Asked Questions
What size aircon do I need for a bedroom?
A standard Cape Town bedroom of 12 to 18 m² is usually a 9000 BTU unit, and a larger main bedroom with more glass commonly needs 12000 BTU. West-facing glass, a high ceiling or an uninsulated roof can push a room up a size.
How long does an aircon installation take?
A straightforward back-to-back split installation is generally half a day to a day. Long pipe runs, core drilling through concrete, a new electrical circuit or a condenser at height can take it to two days.
Is it cheaper to buy the aircon myself?
Sometimes on the unit price, rarely overall. Installers buy at trade and many will not warrant the workmanship on equipment they did not supply. Get both quoted — supplied and fitted, and installation only — and compare the total.
Do I need a dedicated electrical circuit for an aircon?
For anything from about 12000 BTU upward it is the norm, and most installers will insist on it. Running an aircon off a general plug circuit works until the circuit is loaded, then it trips.
Can the outdoor unit go anywhere?
It needs airflow around it, somewhere to drain, a route for the pipework and a position where the noise and vibration are not against a bedroom wall or a neighbour's boundary. In a complex or apartment block there may also be rules about where it may be seen from.
Do you install the aircons yourselves?
No. Aircon Installers Cape Town is a free quote service. LEADERR APPROVED local aircon installers do the work, quote you directly and carry the workmanship.
Installation is one of several services covered on Aircon Installers Cape Town, alongside repairs, servicing, regas and maintenance.
Related Aircon Services
Aircon Installers Cape Town is a free quote-matching service. We do not install, repair or service air conditioners ourselves. Every quote comes from a LEADERR APPROVED local contractor, and your contract is with the business you appoint. Assess each quote on its own merits before appointing anyone.
Describe the job once and compare quotes from LEADERR APPROVED contractors in your area.
Get 5 QuotesGet Aircon Installation Quotes
Send the room, the position and the property type, and get installation quotes from local aircon installers.
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