Annual service to keep heat pumps efficient: coil clean, descale, sensor test and charge verification. In Nelson Mandela Square this is sandton prime work on all heat pumps systems, attended within about 35 minutes of dispatch.On Midea equipment specifically — value inverter splits, cassettes and hot water heat pumps — the faults we see most in Nelson Mandela Square are four-way valve sticking in heating mode and outdoor fan capacitor failure.Every visit starts with a full diagnostic and a written quote before any part is fitted.Centre management contractor permits; night work often required. Heat Pump Services bookings in Nelson Mandela Square are logged against Block 4 so we can allow for power availability on site.
- Typical response window
- 35 minutes from Sandton
- Distance from Sandton CBD
- 0.6 km
- Municipal water hardness
- moderate (140 ppm)
- Load-shedding schedule
- Block 4
- Access & compliance
- Centre management contractor permits; night work often required.
- Typical installed systems
- Restaurant coldrooms, display fridges and centralised HVAC.
Refrigerant data
| Gas | Classification | Suction pressure | Discharge pressure | Typical use |
|---|---|---|---|---|
| R410a | HFC blend (A1) | 280-320 kPa at 7 degrees C evaporating | 2 600-3 000 kPa at 45 degrees C ambient | Most inverter splits, ducted systems, VRV/VRF and heat pumps installed since 2005. |
| R32 | HFC (A2L, mildly flammable) | 300-340 kPa at 7 degrees C evaporating | 2 700-3 100 kPa at 45 degrees C ambient | Current-generation inverter splits and heat pumps. |
| R134a | HFC (A1) | 80-140 kPa at -5 degrees C evaporating | 900-1 200 kPa at 45 degrees C ambient | Wine cellars, display cabinets, medium-temperature commercial refrigeration and some heat pumps. |
Common questions
My Midea unit heats but will not cool. What is wrong in Nelson Mandela Square?
That points to the four-way reversing valve sticking or its solenoid coil failing. It can often be freed and the coil replaced without opening the sealed system.
Can you work after trading hours?
Yes. Retail, restaurant and office work is routinely scheduled at night or early morning under a permit-to-work so trading is not interrupted.
What does an annual service contract include?
Scheduled visits, priority response between visits, a written condition report per unit and fixed labour rates for the contract year.
Is a compressor replacement guaranteed?
Yes. Replacements are done with a system flush and new drier, and both part and workmanship are warranted, provided the original cause of failure is corrected.
Request a callout or quote
Send it straight to our WhatsApp for the fastest response, or call 069 268 0988 / email info@reyds.co.za.