John Thompson · South Africa
John Thompson Gas Boiler Maintenance in Johannesburg
John Thompson gas boiler maintenance across Gauteng. Locally manufactured industrial plant with strong local parts support.
John Thompson equipment we work on includes packaged steam and hot water boilers. Commonly replaced parts on this brand are level controls, burners, refractory, and we keep or source these against the unit's model and serial plate rather than by guesswork.
Gas boiler maintenance keeps combustion inside the manufacturer's stated band and proves the gas train is tight. On condensing plant it also keeps the condensate path and secondary heat exchanger clear, which is where efficiency is usually lost first.
Recovery rate and storage volume have to be considered together; adding heating capacity to undersized storage rarely fixes a peak-hour shortfall. Gauteng municipal water is moderately hard, so scale on elements and heat exchangers is the single most common cause of falling performance.
- Parts
- Level controls, burners, refractory
- Turnaround
- Booked service visits, typically 2–4 hours per appliance.
- Call
- 069 268 0988
What is included
Scope of work
- Tightness test on the gas train
- Burner head and injector clean
- Combustion analysis and adjustment
- Condensate trap and neutraliser service
- Heat exchanger and flue inspection
- Safety interlock testing
Technical detail
Specifications
| Interval | Annual minimum; six-monthly for commercial duty |
|---|---|
| Analysis | CO, CO2, O2 and flue gas temperature |
| Deliverable | Service certificate with readings |
| Coverage | Wall-hung to floor-standing commercial plant |
| John Thompson ranges | Packaged steam and hot water boilers |
When to call
Symptoms we see on this equipment
- No service in the past 12 months
- Sooting around the burner or flue
- Condensate trap overflowing
- Efficiency below commissioning figures
Coverage
John Thompson Gas Boiler Maintenance by area
- John Thompson Gas Boiler Maintenance Johannesburg
- John Thompson Gas Boiler Maintenance Sandton
- John Thompson Gas Boiler Maintenance Randburg
- John Thompson Gas Boiler Maintenance Midrand
- John Thompson Gas Boiler Maintenance Fourways
- John Thompson Gas Boiler Maintenance Bedfordview
- John Thompson Gas Boiler Maintenance Germiston
- John Thompson Gas Boiler Maintenance Boksburg
- John Thompson Gas Boiler Maintenance Benoni
- John Thompson Gas Boiler Maintenance Kempton Park
- John Thompson Gas Boiler Maintenance Edenvale
- John Thompson Gas Boiler Maintenance Alberton
- John Thompson Gas Boiler Maintenance Roodepoort
- John Thompson Gas Boiler Maintenance Krugersdorp
- John Thompson Gas Boiler Maintenance Centurion
- John Thompson Gas Boiler Maintenance Pretoria
FAQs
Frequently asked questions
Are you an authorised John Thompson agent?
We are an independent specialist. We repair and maintain John Thompson equipment using correct-specification parts, and where a unit is still under manufacturer warranty we will tell you before doing anything that could affect it.
Can you get John Thompson parts?
Level controls, burners, refractory for John Thompson are ordered against the model and serial plate. Where an original part has a long lead time we will offer a compatible equivalent and say clearly which one is being fitted.
What does John Thompson gas boiler maintenance include?
Tightness test on the gas train, Burner head and injector clean, Combustion analysis and adjustment, plus verification that the unit performs to the manufacturer's stated figures after the repair.
Where do you service John Thompson equipment?
Across Johannesburg, Ekurhuleni, West Rand, Midrand, Centurion and Pretoria. Call 069 268 0988 to confirm attendance for your address.
Is it worth repairing an older John Thompson unit?
Where the tank or coil has perforated, replacement is usually the honest answer and we will say so on site. Locally manufactured industrial plant with strong local parts support.
John Thompson gas boiler maintenance
Serving Johannesburg, Ekurhuleni, West Rand, Midrand, Centurion and Pretoria.