Heat pumps · Scheduled

Heat Pump Making Noise

Rattling, grinding, screeching or loud humming during operation.

This fault is normally treated as scheduled work because the plant remains usable, but the fault will get more expensive the longer it is left.

Gauteng municipal water is moderately hard, so scale on elements and heat exchangers is the single most common cause of falling performance.

069 268 0988 info@reyds.co.za

Equipment: Heat pumps
Priority: Scheduled
Call: 069 268 0988

What we find

Likely causes

Worn fan bearings
Loose fan blade or damaged shroud
Compressor mounting rubbers perished
Refrigerant flow noise from low charge
Pipework vibrating against the casing

Test sequence

How we diagnose it

Isolate fan and compressor noise separately
Inspect mounts and fasteners
Check charge and superheat
Vibration inspection of the pipework runs

Repair route

Services that resolve this fault

Heat Pump Repairs

Fault-finding and repair of air-source hot water and pool heat pumps.

Industrial Heat Pump Repairs

High-capacity and cascade heat pump repairs for plants and process water.

Commercial Heat Pump Repairs

Hotel, guesthouse, gym and complex heat pump repairs with minimal downtime.

Heat Pump Maintenance

Scheduled servicing that keeps COP high and prevents compressor failure.

Heat Pump Installation

Sizing, plumbing, electrical and commissioning for new heat pump plant.

Heat Pump Regassing

Leak detection first, then correct-charge regassing by weight.

Heat Pump Troubleshooting

Structured diagnostics for intermittent and error-code faults.

Commercial Heat Pump Regassing

Leak repair and charge correction on multi-unit commercial plant.

Coverage

Attendance by area

Also check

Related faults

Heat Pump Not Heating Water

The unit runs but water stays cold or only reaches lukewarm temperatures.

Heat Pump Keeps Tripping the Breaker

The circuit breaker or earth leakage trips shortly after the heat pump starts.

Heat Pump Leaking Water

Water pooling under or around the unit, sometimes continuously.

Heat Pump Compressor Fault

The compressor will not start, hums and trips, or cuts out on overload.

Heat Pump High Pressure Fault

The unit locks out on a high pressure error, often after running for a while.

Heat Pump Low Pressure Fault

The unit trips on low pressure, typically in cold weather or early morning.

FAQs

Frequently asked questions

What causes heat pump making noise?

The usual causes are worn fan bearings, loose fan blade or damaged shroud, compressor mounting rubbers perished, refrigerant flow noise from low charge. Which one it is can only be confirmed by measurement, not by symptom alone.

How do you diagnose it?

Isolate fan and compressor noise separately; Inspect mounts and fasteners; Check charge and superheat; Vibration inspection of the pipework runs. The readings are recorded so the repair decision is based on data.

Can I keep using the system in the meantime?

Usually yes, for a short period, but efficiency and component life are both being lost while the fault persists.

Where do you attend this fault?

Across Johannesburg, Ekurhuleni, West Rand, Midrand, Centurion and Pretoria.

Get heat pump making noise diagnosed

Scheduled attendance across Johannesburg, Ekurhuleni, West Rand, Midrand, Centurion and Pretoria.

069 268 0988 Request a quote