A hillside suburb and its outdoor units

Northcliff climbs the ridge west of Johannesburg, and many of its homes step down the slope (source: Wikipedia). An outdoor unit mounted high on a wall, or on a stand above a drop, is harder to reach than one on a flat yard, and that shapes how a regas is done safely.

It also makes the condenser position worth revisiting. A unit that cannot be reached without a tower every time will be serviced less often than it should be.

A sealed system does not use gas up

Refrigerant circulates in a closed loop on every unit ever made, and running the aircon does not consume it. If the system is low, refrigerant has escaped through a joint, a flare, a valve or a hairline crack in a coil.

That is why the leak comes before the refill. Filling a system that is still leaking is a repeat visit waiting to happen. Our guide to a unit that is not cooling explains the symptoms.

What a proper regas includes

The job starts with pressures and temperatures, then a leak test on the joints and the coil. A found leak is repaired, the system is pressure-tested again, and only then is it evacuated and charged to the maker's specification by weight.

Evacuation is the step that quietly gets skipped. It removes moisture and air from the loop, and leaving them in is how a compressor is damaged over the months that follow.

Aircon pages for Northcliff

Frequently asked questions

Do you cover Northcliff?

Yes. Enquiries are taken from across Northcliff, and the contractor who covers the area will contact you about the unit.

My unit is mounted high on the wall. Is a regas still possible?

Yes, but the access has to be planned so the work can be done safely. Mention the height and the stand when you send the enquiry.

Can the unit just be topped up?

It can, but filling a system that is still leaking is a short-term answer. The contractor should test for a leak first and tell you what they find.

Sources

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