Gas boiler with its cover off for a repair in a kitchen

Boiler repairs · Gas boilers

Boiler repair in Andover

No heating, no hot water or a fault code on the display. Dexter finds the fault, explains it and agrees the price before he starts.

Book a repair 07774 319391

5.0 on Google from 63 reviews · Gas Safe and OFTEC registered

How much does a boiler repair cost in Andover?

A boiler repair visit from DWM starts from £90, which covers the call-out and the first hour. Parts and any extra time are agreed with you before the work goes ahead, so there are no surprises on the bill.

Need it looked at quickly? Call 07774 319391 or WhatsApp Dexter.

Signs your boiler needs a repair

No heating or no hot water
A fault code or flashing light on the display
Pressure keeps dropping and needs topping up
Banging, gurgling or whistling noises
Water leaking from the boiler or pipework
The pilot or burner keeps going out

How Dexter fixes it

When a boiler stops, you want someone who will turn up when they say, find the real fault and fix it properly. Dexter repairs gas boilers across Andover and the surrounding area, from fault codes and lockouts to leaks, noisy pumps and diverter valves that leave you with heating but no hot water.

He starts by checking the boiler safely and testing it with a flue gas analyser, then explains in plain English what has failed and what it will cost to put right. Common parts are sourced quickly, and if a boiler is not worth repairing he will tell you honestly and give you the price of a replacement instead.

If you smell gas, leave the property, turn off the supply at the meter if it is safe to do so and call the National Gas Emergency Service on 0800 111 999 first.

What Dexter checks on a repair

Fault codes and the boiler's history
Gas supply, pressure and flue
Ignition, fan and gas valve
Pump, diverter valve and heat exchanger
System pressure, expansion vessel and leaks
A combustion test with a flue gas analyser after the fix

Price

From £90 call-out and first hour

Parts and any extra labour are agreed before work goes ahead.

Get it looked at

What affects the price

The part that has failed
How long the fault takes to trace
The age and make of the boiler
Whether a second visit is needed for parts

How long it takes. Many repairs are fixed on the first visit. Where a part has to be ordered, Dexter returns to fit it as soon as it arrives.

How it works

No call centre and no sales visit. The person you speak to is the person who does the job.

1Send the form or call
Tell Dexter what the boiler is doing, any fault code, and send a photo if you can. He rings you back.
2Diagnosed and explained
He traces the fault, explains it in plain English and agrees the price with you.
3Fixed and tested
The repair is carried out and the boiler tested before he leaves.

Dexter's own photos

Real jobs, photographed by Dexter. No stock pictures.

Boiler opened up for a repair
Boiler with the case off and an analyser connected
An old Potterton boiler condemned and removed

What customers say

5.0 on Google from 63 reviews. Read them all on Google

★★★★★

After smelling gas around our boiler, I called DWM and Dexter was with us within 30 mins. He diagnosed a few issues, sourced the parts and fixed our boiler within a few hours - at a very fair price! He’s polite and knowledgable and I hope to use Dexter for all future plumbing work.

Ross VickeryGoogle review, March 2025

★★★★★
Called Dexter about a boiler issue. He came out the same day and at the same he said. He then very swiftly fixed the issue. Polite and professional. Would highly recommend!
Rosie MGoogle review, December 2023
★★★★★
Great work by Dexter! He has repaired my toilet when it was leaking, repaired my boiler and repaired my thermostatic taps. Strong and capable guy and great attitude and good work ethic. Would definitely recommend!
Nathan WatsonGoogle review, September 2026
★★★★★
Excellent service. Dexter resolved a number of issues with our Central Heating/Hot Water system by working methodically through them. He was friendly and professional and responded in a timely manner to our enquiry. All was resolved in a couple of visits and within 36 hours. ...
Anthony DraytonGoogle review, February 2024

Questions

Boiler repairs:
your questions

Not sure what boiler you have? Send Dexter a photo and he will tell you.

WhatsApp Dexter

Do you repair all boiler brands?

Dexter repairs all the major boiler brands, including Worcester Bosch, Vaillant, Ideal, Baxi and Glow-worm.

Do you offer 24 hour call-outs?

DWM is not a 24 hour service. Call Dexter and he will tell you how quickly he can get to you.

What if my boiler is not worth repairing?

Dexter will tell you honestly and can give you a fixed price for a new boiler instead.

What should I do if I smell gas?

Leave the property, turn off the gas at the meter if it is safe, and call the National Gas Emergency Service on 0800 111 999 before calling DWM.

Do you repair LPG and oil boilers too?

Yes. See the LPG boiler repair and oil boiler repair pages.

Ask Dexter about boiler repairs

Send the short form and Dexter rings you back himself. Or call 07774 319391 or send a WhatsApp.

Gas Safe and OFTEC registered · 5.0 on Google from 63 reviews · Based in Andover, covering Hampshire and Wiltshire