Boiler Maintenance FAQs


Below we have compiled answers to some of the frequently asked questions we receive via email, phone and social media about maintaining the boilers we install for customers. If you can't spot your question below, don't fret! Simply give us a call or get in touch with us online and we will be able to provide you with a clear and simple answer as soon as possible.

Should I repair or replace my old boiler?

Replace. A repair can sometimes be as expensive as a brand new boiler. And you could easily have more problems with a repaired boiler further down the line.

A brand new boiler is usually more efficient and more reliable.

Your new boiler will be covered by warranty too – so if it breaks, the manufacturer will repair it with no extra charge.

We can provide a brand new A-rated boiler from £1,695, or from £10.96 a month, including VAT and Gas Safe installation.

Will I get boiler cover from BOXT?

Yes. Every new BOXT boiler comes with a manufacturer's guarantee of up to 10 years providing you continue to get it regularly serviced.

You don't need to do anything to activate your guarantee – we'll register your boiler with the manufacturer as part of our installation service. Please note that your guarantee is legally with the manufacturer, not with BOXT.

Will BOXT do a Chemical Flush?

Yes. We do a Chemical Flush – a hot flush and dose.

We'll put a cleaner into your system, flushing it around using the boiler. Any debris will be caught by the magnetic Omega TF1 filter we install for free. We'll keep going until it's clean.

Once the system is up to temperature, it's drained and refilled with clean water. Finally, an inhibitor is added to the water to protect the system.

Will BOXT do a Powerflush?

No. After years of experience, we've found that using a Powerflush machine on an older system simply causes more problems.

Instead, we carry out a Chemical Flush – which is a highly effective way to keep your system protected, approved by our manufacturer partners.

What do I do if my boiler breaks down?

Don't panic. Get in touch with your boiler manufacturer and they'll send an engineer out as soon as possible. All BOXT boilers come with a manufacturer's guarantee of up to 10 years.

If your boiler is made by Worcester Bosch call 0330 123 9559

Open Monday to Friday 7am to 8pm, Saturday 8am to 5pm, Sunday 9am to 12pm.