Is there an opening?
Window Wall Aircon South Africa put the whole machine in one opening: half in the room, half outside, with no pipework between two units. They are the cheapest fixed aircon there is, and the trade-off is noise in the room and an opening cut through a wall.
Tell us about the opening and get window wall quotes.
Get the Best QuoteHow They Differ From a Split
- One box. Compressor, condenser and evaporator all in the same casing.
- No pipework. Nothing to run between two units and nothing to leak.
- Cheaper. Both the unit and the installation.
- Noisier inside. The compressor is in the room with you.
- An opening. A hole through a wall or a modified window.
- Simple to replace. Swap the box, leave the opening.
Where They Still Make Sense
- Rented property. Less invasive to the structure than a split pair.
- Server and plant rooms. Noise does not matter and simplicity does.
- Workshops and stores. Robust, cheap and easy to replace.
- Replacements. An existing opening is a reason to stay with the type.
- Tight budgets. The lowest cost route to fixed cooling in a room.
- Backup cooling. A second, independent machine in a critical room.
What to Check First
- Body corporate rules. Many complexes do not allow them on a facade.
- The wall. Load bearing walls need a lintel over the opening.
- Weatherproofing. The seal around the unit is where the leaks start.
- Condensate. It drips outside, so check what is below.
- Support. The unit is heavy and the opening must carry it.
- Security. An opening in an external wall is an opening.
Window Wall Aircon Prices
Ballpark window wall figures so you can check a quotation.
| Item | Ballpark price |
|---|---|
| 9000 BTU window wall unit, supplied and fitted | R6,500 - R11,000 |
| 12000 BTU window wall unit, supplied and fitted | R8,000 - R14,000 |
| 18000 BTU window wall unit, supplied and fitted | R11,000 - R19,000 |
| 24000 BTU window wall unit, supplied and fitted | R14,000 - R24,000 |
| Cutting a new opening in a brick wall | R2,500 - R8,500 |
| Lintel and structural making good | R2,000 - R9,000 |
| Replacing a unit in an existing opening | R1,200 - R3,500 |
| Weather sealing and finishing | R650 - R2,500 |
Prices JUST UPDATED. Ballpark figures, rounded, excluding VAT. They reflect typical South African aircon and refrigeration rates. They are not our prices or quotations, and no provider is bound by them. Confirm what each quotation includes, such as the unit capacity, the standard pipe run, the electrical work, making good and callout fees.
Get an installed price for your own opening rather than a range.
Get the Best QuoteWhat Affects the Price
- Capacity. As with any unit, the BTU rating leads the price.
- New opening or existing. Cutting a wall is the larger part of a new fit.
- The wall. Brick, block, drywall or load bearing.
- Floor level. Access and scaffolding above ground floor.
- Making good. Plaster, paint and sealing inside and out.
- Removal of the old unit. And disposing of it.
What to Include in Your Request
- Whether there is an opening already. And roughly its size.
- The wall type. Brick, block or drywall, and whether it is load bearing.
- The room size. So the capacity can be sized.
- The floor. Ground floor or higher.
- What is outside. A walkway, a garden or a neighbour's window.
- Any complex rules. Whether units are allowed on the facade.
Before the Installer Quotes
- Check the rules first. Many complexes ban them outright.
- Ask about the lintel. A load bearing wall needs one, properly.
- Ask about the seal. That is where water gets in later.
- Think about the noise. Honestly, especially for a bedroom.
- Compare against a split. The price gap is smaller than it used to be.
- Check what is below. Condensate drips outside, onto something.
Window Wall Aircon FAQs
Are window wall units still worth buying?
In the right place, yes. They are the cheapest fixed cooling you can install, there is no pipework to leak and replacing one is a swap rather than an installation. The reasons most homes now choose splits are noise and looks, and both are real, but for a workshop, a store room, a plant room or a rental they remain sensible.
How noisy are they compared with a split?
Noticeably noisier indoors, because the compressor is in the same box as the one blowing air into the room rather than outside on a bracket. For a bedroom most people find the difference decisive. For a workshop or a server room it does not matter at all.
Do they need an opening cut in the wall?
Either an opening cut through the wall or a modified window frame. Cutting a new opening in a brick wall means a lintel if it is load bearing, plus making good on both faces, and that work is often a larger share of the price than the unit. An existing opening makes the job much cheaper.
Can I fit one in a flat?
Check the rules before you buy anything. Many bodies corporate do not allow window wall units because of their effect on the facade, and some do not allow any external alteration at all. Where they are not permitted, a split with a carefully positioned outdoor unit is usually the alternative that gets approved.
Where does the water go?
Outside, dripping from the rear of the unit, which is why what sits below matters. Over a walkway, a doorway or a neighbour's property it will become a complaint. Many units can take a drain pipe on the outside to carry the condensate somewhere sensible, and it is worth asking for.
Window wall units are one of the types providers listed on Aircon Hub quote for, alongside split systems and floor standing units.
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