Cardiff
Combi Boiler Repairs
Gas Boiler Repairs
Electric Boiler Repairs
Low Boiler Pressure Repairs
Cardiff Boiler Service
† Find out whether our amazing fixed price repair and no fix no fee offers are available for your manufacturer by getting a quote today.
Looking for fixed price boiler repair in Cardiff? You can get a same-day or next-day visit wherever possible, and our repair guarantee comes with every job. From no hot water to a boiler that keeps cutting out, we can fix it.
We fix boilers of all makes and ages, whether combi, gas or electric. You can book online in minutes and choose your visit date. The engineer checks the pressure, the controls and the flame to find the fault. They talk you through the repair first, then carry it out. They can also give you simple tips to help avoid the same fault.
Tell us what the boiler is doing when you book, such as any noises or codes.
Most boilers run at a pressure between 1 and 1.5 bar. If the gauge drops below 1 bar, the boiler may stop working. You can usually top it up using the filling loop, as your manual explains.
If the pressure keeps falling, water is escaping somewhere. It could be a radiator valve, a joint in the pipework or a part inside the boiler. If the fault won't clear, leave the casing on and let a boiler engineer in Cardiff take a look.
Look for drips under the boiler, damp patches or rust marks on pipes. A leak doesn't always show, so a boiler that needs topping up every few days usually has one. Small leaks are easier to fix when they are found early.
Bleeding a radiator also lowers the pressure. Check the gauge after you bleed each one. If it has dropped, top the system back up.
Pressure that is too high can cause problems too. If the needle sits in the red zone, turn the boiler off and get it checked. The pressure relief valve may also let water out through a small pipe outside.
After a top-up, keep an eye on the gauge for a few days. If it stays steady, the cause may have been air in the radiators. If it falls again, there is likely to be a leak.
Your engineer will explain what they find in plain terms. You can ask as many questions as you like.
Get an instant price online and pick a repair date that suits you.
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Common problems we put right include:
Book your boiler repair online or call 0333 733 5127 today.
Select a town to see its boiler repairs page:
Our engineers fix all major boiler brands, including:
Here are some guides you may find useful:
Here's what people most often want to know about boiler repair in Cardiff. Our boiler FAQ page covers many more.
Pour warm water slowly over the frozen section, then reset the boiler. Never use boiling water, as it can crack the plastic pipe. The condensate pipe carries waste water from the boiler to a drain outside. If it freezes often, our engineers can check how it was fitted and fix the cause.
We repair every brand. Our engineers are manufacturer approved and work on combi, gas and electric boilers. Whether your boiler is a well-known make or a rarer one, they can find the fault and fix it. The brands section on this page lists some of the makes we see most.
It depends on the fault. The price is set by the repair, any parts needed, and the make and age of your boiler. You can see an instant price online before you book. Selected brands qualify for a fixed price repair, and there are no hidden callout fees on any job.
Yes, it is. All our boiler repairs come with a repair guarantee as standard, so you don't need to buy extra cover. Our engineers are manufacturer approved, and they test the boiler once the repair is done. If anything about the work worries you afterwards, let our team know.
Get everyone out and phone 0800 111 999 straight away. This is the free National Gas Emergency line, open 24 hours a day. If it's safe, turn off the gas at the meter and open the windows first. Don't use light switches or naked flames until the emergency engineer says it's safe.
