Lisburn
Combi Boiler Repairs
Gas Boiler Repairs
Electric Boiler Repairs
Low Boiler Pressure Repairs
Lisburn Boiler Service
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Go Assist offers boiler repairs in Lisburn at a fixed price. We aim for a same-day or next-day visit wherever possible, and our repair guarantee is included as standard. If your boiler shows an error code, loses pressure or won't light, we can fix it.
From combi boilers to electric models, we repair all types. Once you have your instant price online, you choose the day you want us. Our engineer will check the boiler over and find the fault. You'll hear what the repair involves before any work begins. You can ask them anything about your boiler while they're there.
We repair boilers whether the fault is new or has been building for a while. If you manage several rental homes, you can book each repair the same way. If your heating has been off for a while, mention it when you book.
A combi boiler heats water as you use it, so there is no tank to run out. When the hot water fails, the fault is in the boiler itself or its controls.
A common cause is the diverter valve. It switches the boiler between heating and hot water. If it sticks, you may get hot radiators but cold taps, or the other way round. A boiler engineer in Lisburn can find the root of the problem and fix it.
Lukewarm water, or water that runs hot and then cold, can point to a faulty sensor or low water flow. Low pressure can also stop a combi heating water.
Before you book, check the pressure gauge and the hot water setting on the boiler. Try a different tap too, as the problem may be with one tap only.
Combi boilers also need a good flow of water from the mains. If several taps run at once, the water may cool. That is normal, but a sudden change is worth checking.
A combi that heats the radiators but not the taps may also have a faulty sensor. Your engineer will test the valve, the pump and the sensors to find the cause.
Check that the boiler has power and the display is on. Then look for any code or warning light.
Book your boiler repair online or call 0333 733 5127 today.
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We are often asked to fix faults such as:
Get an instant price online and pick a repair date that suits you.
Our boiler engineers also cover these towns:
Our engineers are trained on all the main boiler brands, including:
Learn more about your boiler with these guides:
Customers often ask us the same things about boiler repairs in Lisburn, so we've answered them here. Still have a question? Our boiler FAQ page may help.
Yes. Our engineers carry out annual boiler services in Lisburn as well as repairs. During a service, they inspect the main parts, check the flue and run a flue gas analysis. Regular servicing helps your boiler run safely and can help reduce your fuel bills.
Yes, every one of them. All our engineers who work on gas boilers are Gas Safe registered, as the law requires. They are also DBS-checked, so you know who is coming into your home. Gas work is dangerous if it isn't done properly, so never try to repair a gas boiler yourself.
Leave the property and phone 0800 111 999 from outside. That's the National Gas Emergency number, and it's free and open 24 hours a day. Before you go, open the windows and turn off the gas at the meter if you can. Don't switch any lights or appliances on or off.
Quite often, yes. We aim to get an engineer to you the same day or next day wherever possible. The sooner you book, the more dates you'll have to choose from. Our online booking shows each available day, so you can plan the visit around your work and family.
Water is getting out of the system somewhere. It could be a leaking joint, a radiator valve or the pressure relief valve. Look for damp patches and rust marks. If the gauge keeps dropping below 1 bar after a top-up, our engineers can trace the leak and repair it.
