Prices checked 9 November 2026
Ducted and multi-room aircon prices as one Johannesburg installer publishes them for 2026, with duct design, supply and installation included.
| Job | Price | Source |
|---|---|---|
| Ducted, small (36,000 BTU, 3 to 4 rooms) | R35,000 to R65,000 | KFRCOOL, Johannesburg and Gauteng (2026 prices, valid as of September 2026) |
| Ducted, medium (48,000 to 60,000 BTU, 5 to 7 rooms) | R55,000 to R95,000 | KFRCOOL, Johannesburg and Gauteng (2026 prices, valid as of September 2026) |
| Ducted, large (8 rooms or more) | R80,000 to R150,000 | KFRCOOL, Johannesburg and Gauteng (2026 prices, valid as of September 2026) |
| Multi-split, 3 to 4 indoor units on one outdoor unit | R28,000 to R55,000 | KFRCOOL, Johannesburg and Gauteng (2026 prices, valid as of September 2026) |
Ducted prices include duct fabrication, insulation, ceiling grilles and zone dampers. Ducting needs enough roof space; a retrofit into an existing ceiling, a long run to the outdoor unit or electrical board upgrades sit at the top of each range.
Sources: the businesses named above, as they publish their prices; we checked each one on 9 November 2026. Every pro sets their own price, so use these to set a budget and ask for a written quote. The advice below was first written in April 2024; its old prices have been taken out.
How Much Does Ducted Air Conditioning Installation Cost?
Choosing a Ducted AC System
Not all ducted air conditioning systems are the same. You need to decide whether you want a system just for cooling or a reverse cycle system that can both cool and warm your home. Reverse cycle units are slightly more expensive but are ideal for climates that experience both warm and cold weather.
The capacity of an air conditioner is critical. It’s measured in kilowatts, and the right size depends on your home. Small capacity units (around 3.5 kilowatts) are enough for a studio apartment, but a three-bedroom house will require much more. Systems can go up to 30 kilowatts, which is more than enough for most homes. Purchasing a unit with more capacity than needed is not cost-effective or energy-efficient.
You might consider investing a little more in a zoned system, which allows you to choose which rooms to heat or cool, instead of servicing the entire house uniformly. This approach can provide significant energy and cost savings.
Costs of Ducted Air Conditioning Installation
Typically, the company that sells you the air conditioner will also handle the aircon installation. It's advisable to get itemized quotes that cover both the unit cost and installation fees. This allows you to compare different products and installation services and possibly negotiate a better overall price with your installer.
Aircon installation costs do not always rise proportionally with the size of the unit. For example, installing a smaller system might cost nearly as much as the system itself, whereas a larger system could cost only 50% more than the unit price. Many factors can influence this.
Considerations for Operating Costs
Remember to factor in the running costs of ducted air conditioning. Opting for a slightly smaller system to save money might backfire if the unit has to work harder to maintain a comfortable temperature, leading to higher energy bills.
You can also reduce operational costs by setting your thermostat a few degrees higher in summer and lower in winter than might feel immediately comfortable. Adjusting your thermostat by just one degree Celsius can save between 10–15% on your energy bill.
Don’t hesitate, contact the Aircon Pros today, or click here to get a quote for air conditioning repair or installation in Cape Town.
Current demand for air-conditioning
Local Pros received 1091 enquiries for this service across its covered areas in the last 12 full months. The busiest month was January 2026.
These are requests for quotes, not completed work or a price estimate.
Want an exact price? Get free quotes from local pros.
Find Aircon Repairs, Services and Installations pros near you ›