50% OFF SERVICING PLAN FOR THE FIRST THREE MONTHS - limited offer. Call now!
50% OFF SERVICING PLAN FOR THE FIRST THREE MONTHS - limited offer. Call now!
50% OFF SERVICING PLAN FOR THE FIRST THREE MONTHS - limited offer. Call now!
50% OFF SERVICING PLAN FOR THE FIRST THREE MONTHS - limited offer. Call now!
Honest diagnostics, lasting repairs, and fast response times across Swansea — whatever your boiler is doing, our engineers will find the real cause and fix it properly.
When your boiler breaks down, you need an engineer you can trust. At Swansea Gas & Oil, we pride ourselves on providing honest advice, quality workmanship and fast response times.
✓ Gas Safe & OFTEC Registered engineers
✓ Repairs to most makes and models
✓ Local company based in Swansea
✓ Fast response throughout Swansea and the surrounding areas
✓ Honest pricing with no hidden charges
✓ Friendly, experienced engineers
✓ Fully tested before we leave your home
Common Boiler Faults
Signs Your Boiler Needs Attention
01
Boiler Losing Pressure
If you're regularly topping up your boiler pressure, it's a sign that something isn't quite right. While repressurising the system may temporarily solve the issue, continual pressure loss usually indicates an underlying fault that needs investigating.
Common causes include small leaks on the heating system, a faulty expansion vessel, a leaking pressure relief valve or worn internal components within the boiler itself.
Our engineers will carry out a thorough inspection to identify the source of the problem and recommend the most cost-effective repair, helping to prevent future breakdowns and keep your boiler working efficiently.
02
Boiler Making Strange Noises
Boilers aren't designed to make loud banging, whistling, vibrating or gurgling noises. If yours has started sounding different, it's often an early warning sign that something needs attention.
Noises can be caused by trapped air, limescale build-up, sludge within the heating system, circulation problems or worn internal parts. Left untreated, these faults can become more serious and lead to expensive repairs.
Our engineers will diagnose the cause of the noise, explain exactly what's happening and carry out any necessary repairs to restore quiet, efficient operation.
03
Boiler Leaking Water
Even a small leak should never be ignored. Water escaping from your boiler can damage electrical components, reduce system pressure and eventually lead to a complete breakdown if left untreated.
Leaks can develop from seals, valves, pipe connections, pumps, heat exchangers or condensate components. Our engineers will locate the exact source of the leak before carrying out a professional repair, ensuring your boiler is safe and reliable once again.
The sooner a leak is repaired, the less chance there is of more expensive damage developing.
04
Boiler Keeps Switching Off
If your boiler repeatedly fires up and then shuts down, there is usually an underlying fault preventing it from operating correctly.
This could be caused by overheating, poor water circulation, low system pressure, a blocked condensate pipe, faulty sensors or a problem with the boiler's controls.
Our engineers use professional diagnostic equipment to identify the exact cause of the issue rather than simply replacing parts unnecessarily. Once we've found the fault, we'll explain your options clearly before carrying out the repair.
05
Frozen Condensate Pipe
During freezing weather, the condensate pipe that carries waste water away from your boiler can freeze, preventing the boiler from operating correctly.
A frozen condensate pipe is one of the most common winter call-outs and often causes your boiler to display a fault code or stop working altogether.
We'll safely clear the blockage, check the system for any additional issues and advise whether improvements can be made to reduce the risk of it freezing again in future.
06
Radiators Not Getting Hot
If your boiler is running but your radiators aren't heating up properly, the problem may not actually be the boiler itself.
Cold radiators can be caused by trapped air, sludge within the heating system, faulty radiator valves, circulation issues or a worn pump.
Our engineers will inspect both your boiler and heating system to identify the cause, restoring even heat throughout your home and improving your system's overall efficiency.
Boiler Fault Codes
Modern boilers display fault codes whenever they detect a problem. While these codes can provide useful information, they rarely tell the whole story.
Our experienced engineers understand fault codes from all major boiler manufacturers, including Worcester Bosch, Ideal, Vaillant, Baxi, Main, Glow-worm and many others.
Rather than simply resetting the boiler, we'll diagnose the underlying cause of the fault and carry out a lasting repair, giving you confidence that the problem won't keep returning.
Worcester Bosch
Ideal
Vaillant
Baxi
Main
Glow-worm
Need a Boiler Repair?
Whether your boiler has stopped working completely or it's showing signs of a developing fault, we're here to help. Contact Swansea Gas & Oil today to book your boiler repair and get your heating and hot water back as quickly as possible.