When a replacement makes more sense than another repair
Some air-conditioners are still worth servicing, but there comes a point where repeated faults, weak cooling, noisy operation or high power draw start costing more than the unit is worth. We see this often in homes and offices across Johannesburg North, Sandton, Randburg and Midrand, where older fixed-speed systems run hard through summer and struggle when load-shedding returns and power comes back in surges.
A replacement is usually the better call when the compressor is failing, the gas leaks keep returning, the indoor unit is stained or brittle, or the system is too small for the room after alterations. If the room has changed use, for example from a bedroom to a home office, the old unit may simply no longer suit the load. We look at the space, the ceiling height, glazing and heat gain before recommending a direct swap or an upgraded model.
- Frequent breakdowns and rising repair bills
- Weak airflow or uneven temperature control
- Noisy outdoor unit or rattling indoor fan
- Rust, cracked casing or yellowed covers
- Old controls without timer, sleep or inverter functions
What is included in our replacement service
Our aircon replacement service covers removal, supply, installation and testing. We take out the old equipment, recover the refrigerant where required, check the mounting points and assess the condition of the pipework, trunking and drainage. If the copper lines are still sound and compatible, we can re-use them. If not, we replace what is needed so the new unit runs correctly from day one.
We also look at the electrical side. A replacement often needs a fresh isolator, a proper circuit check and tidy cabling to match the new unit’s rated current. In apartments, office parks and sectional title complexes, this matters because managers often want neat external routing and minimal disruption. Our team keeps the finish clean, not messy or patched together.
- Old unit removal and safe disposal of components
- Assessment of pipe lengths, drain fall and cable condition
- Supply of a suitable replacement unit
- Mounting, levelling and commissioning
- Basic user handover and control setup
How we match the new unit to the room
There is no point fitting a replacement that is the wrong size. Too small and it will run continuously, use more electricity and still not cool properly. Too large and it may short-cycle, leaving the room cold and clammy. We size the new unit based on the room’s square metres, the number of windows, the direction it faces and how many people use it.
For most residential rooms we supply wall-mounted split systems from about 9 000 BTU to 18 000 BTU, with larger spaces going higher where needed. Offices, boardrooms and open-plan areas may need multi-split or higher-capacity systems, especially where computers and lighting add extra heat. In Gauteng’s hot afternoons, the right capacity matters more than just picking the biggest machine.
- Small bedroom or study: around 9 000 BTU to 12 000 BTU
- Average bedroom or office: around 12 000 BTU to 18 000 BTU
- Larger lounge or open-plan area: 18 000 BTU and up
- Inverter options for better control and lower running cost
Our replacement process from inspection to handover
We keep the process straightforward so you know what is happening on site. For homes we usually start with a site visit or photos, then confirm the size and type of replacement needed. For offices and larger sites, we may carry out a more detailed survey if the installation has to work around staff, tenants or trading hours.
Once the job is approved, we schedule the removal and installation. Most standard replacements can be completed in a day if the pipework is in good condition and the access is simple. More complex jobs, such as high-wall indoor units, longer pipe runs or replacements involving ceiling repairs, may take longer. We explain the likely turnaround upfront so there are no surprises.
- Step 1: Check the old unit, room size and electrical supply
- Step 2: Confirm the replacement specification and quotation
- Step 3: Remove old equipment and prepare the mounting area
- Step 4: Install the new unit, pressure test and vacuum the lines
- Step 5: Commission the system and show you how to use it
Pricing that depends on the site, not a one-size-fits-all number
Replacement pricing depends on the unit size, the brand and specification chosen, the condition of the existing pipework, and how easy it is to access both the indoor and outdoor positions. A straight replacement in a house in Randburg will cost less than a unit that needs new trunking, longer refrigerant lines and electrical upgrades in a Midrand office.
We quote on the real scope of work. That means you pay for what is needed, not for unnecessary extras. If the existing installation can be reused safely, we say so. If the pipework is aged, corroded or badly bent, we recommend replacement before it causes problems later. That usually saves money over the life of the system, not just on day one.
- Unit size and efficiency rating
- Length of copper line set and trunking required
- Electrical work and isolator changes
- Wall repairs, sealing and finish work
- Access challenges such as height, ceilings or tight outdoor spaces
Finishes, compliance and care after installation
We aim for a cleaner finish than the old installation had. That includes straight pipe runs, proper support, sealed wall entries and drainage that runs away correctly so you do not get water marks or drips on the wall. In offices and reception areas, a neat finish matters because the installation is visible to staff and visitors every day.
After installation, we advise on maintenance intervals. A typical home unit should be serviced at least once a year, while units in offices, salons, consulting rooms and other busy spaces may need servicing every 6 months. If a unit runs through dusty conditions or near the coast on holiday property, more frequent cleaning can help prevent blocked filters and reduced airflow. The same applies to units that run most of the day during summer.
- Residential servicing: every 12 months
- Office or high-use systems: every 6 months
- Heavy dust or continuous use: inspect sooner
- Keep filters clean and drains clear between visits
Aircon replacements across Johannesburg North and Gauteng
We are based in Johannesburg North and work across Sandton, Randburg, Midrand, the East Rand and the West Rand. For many clients, replacement is part of a wider upgrade plan that includes better controls, inverter operation and lower running cost. For others, the main goal is simply to get rid of an old, noisy unit and replace it with something that cools properly again.
If you are unsure whether to repair or replace, send us the model details, photos of the indoor and outdoor units, and a short description of the fault. We can often tell you quickly if the system is worth saving or if replacement will give you better value. Our team keeps the advice practical, so you can make a decision with confidence and without delay.
Key facts
| Typical unit sizes | 9 000 BTU, 12 000 BTU, 18 000 BTU and larger |
|---|---|
| Replacement type | Wall-mounted split, inverter and selected solar-ready systems |
| Turnaround | Often same day for standard residential swaps |
| Power supply | 240 V single-phase for most homes and small offices |
| Maintenance interval | 12 months for homes, 6 months for busy commercial sites |
| Service area | Johannesburg North, Sandton, Randburg, Midrand, East Rand and West Rand |
