Boiler Repair Cardiff & South Wales
Expert boiler repairs to get your heating back up and running. Our engineers diagnose and fix all makes and models, often on the same day.
About This Service
When your boiler breaks down, you need a fast, reliable repair service. At Apex Heating and Plumbing Solutions, we understand how disruptive a boiler breakdown can be, especially during the colder months. That's why we offer same-day boiler repair services across South Wales.
Our Gas Safe registered engineers are highly experienced in diagnosing and repairing all boiler makes and models, including Worcester Bosch, Vaillant, Baxi, Ideal, and Glow-worm. We carry a wide range of common spare parts in our vans, allowing us to complete most repairs in a single visit.
We believe in transparent, honest pricing. Before any work begins, we'll diagnose the fault and provide you with a fixed price quote. You'll know exactly what you're paying before we start, with no hidden charges or surprises.
Whether your boiler won't ignite, is leaking, making strange noises, or displaying error codes, our team has the technical expertise to get it fixed quickly and safely.
Common Problems We Fix
No Heating or Hot Water
Often caused by broken diaphragms and airlocks, failure of motorised valves, issues with the thermostat, or low water levels.
Boiler Losing Pressure
Usually indicates a water leak in the system or a failing pressure relief valve/expansion vessel. We trace and repair the fault.
Kettling or Banging Noises
Limescale or sludge buildup on the heat exchanger can cause the water to boil and expand, creating loud banging noises. You may need Powerflushing.
Boiler Keeps Switching Off
This lockout is a safety feature. It could be due to low water pressure, a problem with the thermostat, or lack of water flow due to a closed valve or faulty pump.
What To Do If Your Boiler Breaks Down
If your boiler suddenly stops working, first check the simple things: ensure your thermostat is turned up and the batteries aren't dead. Check if you have gas to other appliances, and look at the pressure gauge on the front of the boiler (it should be between 1 and 1.5 bar).
If the pressure is fine and resetting the boiler doesn't clear the error code, do not attempt to open the boiler casing yourself. This is illegal and highly dangerous. Call our local team immediately. If you smell gas, turn off your supply at the meter and view our Emergency Gas Engineer page.
Areas We Cover
Our rapid-response boiler repair engineers cover the entirety of Cardiff, including local suburbs like Roath, Canton, Llandaff, and Cyncoed. We know the area and can navigate traffic to reach you quickly.
We also provide dedicated boiler repair coverage across Newport, Swansea, Bridgend, and the Vale of Glamorgan. Wherever you are in South Wales, a warm home is just a phone call away.
Why Choose Us For Your Repair
Our engineers boast over 20 years of experience, with extensive technical training. This means we focus on accurate fault-finding using multimeters and diagnostic tools, rather than just guessing and replacing expensive parts.
We prioritise emergency situations and always maintain a safety-first approach. When we repair your boiler, we ensure it is operating safely and efficiently before we leave your property.
Why Choose Us
Pricing Guide
Covers call-out and first hour of fault-finding
Quoted on-site before work begins
No inflated mark-ups
All prices are fixed. Contact us for a detailed quote.
Our Guarantees
Frequently Asked Questions
Boiler Repair Cardiff & South Wales Across South Wales
Our Gas Safe registered engineers provide professional boiler repair cardiff & south wales services across the following areas and their surrounding communities:
No Heating? Leaking Pipe?
Our emergency engineers are ready to help, day or night.
Average response time: Under 2 hours for emergencies