What a standard split unit does well
A standard split unit has one indoor unit and one outdoor unit, linked by copper pipework and electrical cabling. It runs at a fixed speed, so it switches on, cools the room to the set temperature, then cycles as needed. For many Durban properties, that is enough to keep bedrooms, lounges, front offices and small trading spaces comfortable without complicated controls.
These units are popular where the load is straightforward and the owner wants dependable cooling at a sensible running cost. They are often used in residential flats, ground-floor offices, consulting rooms, tuck shops, hair salons and small workshops. In areas like Clairwood and Durban Central, that simple setup is often the best fit because it is easy to maintain and parts are usually easier to source later.
- Fixed-speed operation for direct cooling
- Single indoor and outdoor unit arrangement
- Suitable for wall mounting in most rooms
- Works well for everyday, moderate use
Sizes and options we supply
Standard split units come in a few common cooling capacities, usually measured in kW or BTU. The right size depends on room area, roof exposure, number of people in the room and how much heat comes in from glass, equipment or cooking. A room of 18 to 25 square metres may suit a smaller unit, while larger open spaces usually need more capacity and better airflow planning.
We supply units for typical domestic rooms and light commercial spaces. Where the room gets afternoon sun, has high ceilings or sits near the coast with humid air, a slightly larger size may be needed. Oversizing is not ideal either, because the unit may cool too quickly and not remove enough moisture. That can leave the room cold but sticky.
- Common sizes for homes and small businesses
- Wall mounted indoor units are the usual option
- Some sites may need a heavier duty outdoor unit or longer pipe run
- Choice depends on room size, heat load and power supply
If you are unsure of the right capacity, we can assess the room and advise before supply. That avoids guesswork and saves time on the installation day.
Where a standard split unit suits best
This type of air conditioner suits places that need reliable cooling without complex zoning or advanced controls. It is a good option for owner occupied homes, rental units, small retail spaces and compact offices where one room or one section needs treatment at a time. In Durban's warmer months, it can make a real difference in rooms that hold heat through the day.
It is also a practical choice for properties where load-shedding, uneven power supply or older wiring mean the installation must be planned carefully. A standard split unit is straightforward to service later, which matters for sites that want lower ongoing fuss. For coastal properties, regular cleaning helps reduce salt build-up on the outdoor coil and keeps the system breathing properly.
- Bedrooms and living rooms
- Small offices and consulting rooms
- Shops, salons and reception areas
- Light industrial or storage spaces with limited cooling needs
Installation, power and gas requirements
Correct installation matters as much as the unit itself. The indoor unit must be level and placed where the air can move across the room, not straight onto one person all day. The outdoor unit needs solid mounting, enough airflow and protection from rain splash, theft risk and blocked drain paths. On many Durban sites, we also look at where the condensate drain can run so the water does not drip onto paving, boundary walls or neighbour property.
Power supply must match the manufacturer requirements, including cable size, isolator position and breaker protection. Where existing wiring is old or overloaded, we recommend checking the circuit before work starts. The refrigerant gas circuit must be sealed, pressure tested and vacuumed before charging. If gas is lost through a leak, the system will underperform and can damage the compressor. We do regas and leak check work, but a proper repair always comes first.
- Dedicated electrical supply may be required
- Outdoor unit must have free airflow and secure fixing
- Pipe length and height difference must stay within limits
- Drain line should run clear with the correct fall
For units installed close to the coast, we often advise a little extra care around brackets, fasteners and coil cleaning because humidity and salt air can shorten the life of exposed parts. That is just common sense really.
Care, servicing and breakdown support
Standard split units last longer when they are cleaned and checked at regular intervals. Dust on filters, blocked drains and dirty coils all reduce cooling and can cause water dripping inside the room. In Durban, especially in summer, filters can load up quicker than many people expect because windows and doors are often opened during the day.
Our service support covers fault finding, planned maintenance, deep cleans, drain blockages, controls repair, capacitor and contactor faults, fan motor repair, compressor replacement and breakdown call-out work. If a unit stops cooling after load-shedding or trips on start-up, it may be an electrical issue, a gas loss issue or a failing component. A proper inspection saves time and avoids replacing parts that are still usable.
- Clean filters every few weeks in dusty or coastal areas
- Book a deep clean service when airflow drops
- Check for odd noises, water leaks or weak cooling early
- Arrange planned maintenance for business sites with daily use
What to check before you order
Before ordering, measure the room and note what the space is used for. A bedroom, a server room and a salon all behave differently. It helps to know the ceiling height, window size, sun direction and whether the room has many occupants. You should also check the available wall space for the indoor unit and a suitable position for the outdoor unit.
Have the electrical supply details ready too. If you are replacing an older system, tell us what is already in place and whether the pipework can be reused. In some cases the old pipes are too small, damaged or contaminated and should be replaced instead of forcing a poor fit. We can help you make that call before materials are ordered.
- Room size in square metres
- How many people use the room daily
- Whether the site is residential, retail or office use
- Any access limits, body corporate rules or landlord approval
If you are near Clairwood, Durban Central, South Durban, North Durban or West Durban, we can assist with supply and installation planning for the site. For larger eThekwini areas, the same process applies: check the room, check the power, then choose the right size first time.
Key facts
| Type | Fixed-speed split system |
|---|---|
| Common sizes | About 2.6 kW to 7.1 kW, depending on room load |
| Power | Single-phase domestic supply is common, site check required |
| Refrigerant | System gas type confirmed per unit model and rating plate |
| Mounting | Wall-mounted indoor unit with outdoor condenser |
| Best use | Homes, small offices, shops and light commercial rooms |
