Oil boiler servicing · OFTEC registered
Oil boiler service in Andover
A yearly service keeps an oil boiler burning cleanly and reliably. Dexter is OFTEC registered and services boilers inside and out. Choose a time that suits you.
5.0 on Google from 63 reviews · Gas Safe and OFTEC registered
Book your oil boiler service online
Choose a time that suits you and Dexter comes to you. Would rather talk first? Call 07774 319391 or WhatsApp Dexter.
How much is an oil boiler service in Andover?
An oil boiler service from DWM is £145, including a new nozzle.
What happens on the visit
Oil boilers need a yearly service more than most. Soot builds up in the combustion chamber, nozzles wear and filters block, and an unserviced oil boiler is far more likely to lock out in cold weather. Dexter is OFTEC registered and services oil boilers across Andover and the rural villages around it.
A full oil service means the burner is taken apart and cleaned, the nozzle and oil filter are replaced, the electrodes and photocell are checked, the heat exchanger and baffles are cleaned, and the burner is set up again with a combustion analyser. Dexter also looks at the oil line and the tank and tells you if anything needs attention.
What an oil boiler service includes
- 01Burner removed, cleaned and inspected
- 02Nozzle replaced
- 03Oil filter replaced
- 04Electrodes and photocell checked
- 05Heat exchanger and baffles cleaned
- 06Combustion set up with an analyser
- 07Flue, seals and controls checked
- 08The tank and oil line looked at
Why service your oil boiler every year
- It prevents soot build-up and lockouts in winter
- A clean burner uses less oil
- It keeps the manufacturer warranty valid
- It checks for flue and carbon monoxide problems
- It catches tank and oil line problems early
What affects the price
- The boiler make and model
- Indoor or outdoor boiler
- Any extra parts the boiler needs
- Access to the boiler and flue
How long it takes. An oil boiler service takes about an hour and a half.
How it works
No call centre and no sales visit. The person you speak to is the person who does the job.
- 1Pick a time
Choose a day and time above, or call Dexter if you would rather talk first.
- 2Serviced and set up
The burner is cleaned, parts replaced and the combustion set up with an analyser.
- 3Explained and recorded
Dexter explains how it is running and leaves a service record.
Dexter's own photos
Real jobs, photographed by Dexter. No stock pictures.

Outdoor oil boiler with the case open for a service
What customers say
5.0 on Google from 63 reviews. Read them all on Google
★★★★★
Excellent experience with Dexter servicing our boiler. He arranged to come promptly, carried out a thorough service explaining what he had found. Tidy, friendly and reasonably priced. Have used him twice now for different things and will continue to do so.
★★★★★
Dexter came to do a boiler service for us. He was very responsive and arrived on time. Very professional and friendly. He knows his stuff. Would highly recommend.
Gareth HowardGoogle review, July 2023
★★★★★
Dexter was absolutely brilliant. Contacted him via check a trade for a boiler service. Dexter arrived and noticed a few issues with the boiler before doing the service. He explained the issues and then sent us a quote which we accepted. Dexter arrived on the agreed time and date. ...
Tammy GorstGoogle review, January 2024
★★★★★
Recently Dexter conducted an annual service on my boiler. I asked him about the replacement of 3 radiators which were showing some signs of corrosion as well as the decommissioning and removal of an old gas fire. His quote was competitive and realistic, and we agreed a date and a price for the work. ...
Zak NewtonGoogle review, July 2023
Questions
Oil boiler servicing:
your questions
Not sure what boiler you have? Send Dexter a photo and he will tell you.
WhatsApp DexterHow often should an oil boiler be serviced?
Every year. OFTEC and most manufacturers recommend an annual service.
Are you OFTEC registered?
Yes. Dexter is OFTEC registered for oil and Gas Safe registered for gas and LPG.
Do you service outdoor oil boilers?
Yes, as well as boilers in kitchens, utility rooms and garages.
Will you check my oil tank?
Dexter looks at the tank and oil line on the visit and tells you plainly if anything needs doing.
Ask Dexter about oil boiler servicing
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



