Boilers · Priority

Boiler Losing Pressure

System pressure falls and the boiler needs repeated topping up.

This fault is normally treated as priority work because the plant is still running but is damaging itself or wasting energy while it does.

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: Boilers
Priority: Priority
Call: 069 268 0988

What we find

Likely causes

Leak in the system pipework or radiators
Failed expansion vessel
Passing safety valve
Heat exchanger leak
Faulty pressure sensor giving false readings

Test sequence

How we diagnose it

Isolate sections and pressure test
Expansion vessel charge check
Inspect safety valve discharge for flow
Verify gauge against a calibrated instrument

Repair route

Services that resolve this fault

Boiler Repairs

Repairs to gas, diesel, electric and steam boilers across Gauteng.

Boiler Maintenance

Planned boiler servicing, combustion tuning and safety device testing.

Gas Boiler Repairs

Natural gas and LPG boiler repairs, ignition and flame failure faults.

Gas Boiler Maintenance

Annual gas boiler servicing, tightness testing and combustion tuning.

Industrial Boiler Repairs

Heavy-duty boiler plant repairs for factories and processing sites.

Coverage

Attendance by area

Also check

Related faults

Gas Boiler Not Igniting

The boiler attempts to start, clicks or purges, then locks out without lighting.

Boiler Flame Failure

The burner lights then loses flame within seconds and locks out.

FAQs

Frequently asked questions

What causes boiler losing pressure?

The usual causes are leak in the system pipework or radiators, failed expansion vessel, passing safety valve, heat exchanger leak. Which one it is can only be confirmed by measurement, not by symptom alone.

How do you diagnose it?

Isolate sections and pressure test; Expansion vessel charge check; Inspect safety valve discharge for flow; Verify gauge against a calibrated instrument. 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 boiler losing pressure diagnosed

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

069 268 0988 Request a quote