Oil Boiler Service in Watford
Annual oil boiler servicing by OFTEC registered engineers across Watford, Hertfordshire and surrounding areas. A yearly service keeps your boiler safe and efficient, and it's often a condition of the manufacturer's guarantee.
- OFTEC registered engineers
- Usually done in 2 to 3 hours
- Written service record every time
- Over 20 years' experience

Do you have to service an oil boiler every year?
No law requires homeowners to service an oil boiler every year, and unlike gas, landlords don't need an annual safety certificate for oil heating. OFTEC, the body that registers oil heating technicians, recommends a service at least once a year by an OFTEC registered technician.
There are practical reasons to stick to it. Manufacturers such as Grant and Worcester Bosch make yearly servicing a condition of their guarantee, and some home insurance policies won't pay for a breakdown if the boiler hasn't been serviced in the last 12 months.
A service also catches small problems early, before they turn into a breakdown on a cold morning.
What a service includes
- A comprehensive service in line with the manufacturer's requirements and OFTEC guidance
- A thorough inspection and deep clean of the boiler
- Tuning so the boiler runs as efficiently as it can
- Testing of all the safety systems
- Filter replacement
- A written service record for your guarantee and insurance
Why a yearly service is worth it
- Small problems caught before they become expensive ones
- Help keeping your manufacturer's guarantee valid
How it works
- 1Call, WhatsApp or send an enquiry to book a time that suits you.
- 2We arrive on time with everything needed for the service.
- 3Your engineer inspects, cleans, tunes and tests the boiler.
- 4You get a written service record for your guarantee and insurance.
Common questions
Is an annual oil boiler service a legal requirement?
No. There is no UK law requiring homeowners to service an oil boiler every year. OFTEC recommends at least one service a year by an OFTEC registered technician, manufacturers often make it a condition of the guarantee, and some insurers won't cover a breakdown on a boiler that hasn't been serviced in the last 12 months.
How often should an oil boiler be serviced?
At least once a year. That's OFTEC's recommendation, and it's the interval manufacturers such as Grant and Worcester Bosch ask for to keep the guarantee valid.
How long does an oil boiler service take?
Usually 2 to 3 hours.
Do I need a carbon monoxide alarm?
Building regulations guidance in England says a carbon monoxide alarm should be provided in the same room when a new or replacement oil boiler is installed. The same guidance is clear that an alarm is not a substitute for regular servicing.
Which areas do you cover?
Watford, Hertfordshire and surrounding areas, subject to availability. For oil work, that includes rural villages in Hertfordshire and Buckinghamshire: Little Gaddesden and Ashridge; Cholesbury, Hawridge and St Leonards; Chartridge and Bellingdon; and Sarratt, Bovingdon, Flaunden and Chipperfield.
Related services
Speak to an OFTEC registered engineer
Covering Watford, Hertfordshire and surrounding areas, subject to availability. Open Monday to Friday 7am to 7pm, Saturday 7am to 2pm and Sunday 7am to 1pm.
Oil work in rural Hertfordshire and Buckinghamshire includes:
- Little Gaddesden and Ashridge
- Cholesbury, Hawridge and St Leonards
- Chartridge and Bellingdon
- Sarratt, Bovingdon, Flaunden and Chipperfield
