Oil Boiler Services — UK-Wide, Qualified & Priced Up Front
Oil boiler repair, servicing & installation — handled UK-wide by qualified, insured local engineers, with the price agreed before work starts and honest advice on what your system actually needs.
Oil heating, done by the right hands
Oil-fired heating remains the backbone of off-grid rural homes, and it has its own competence regime: OFTEC registration is the recognised standard for oil work, and it's what our network requires of every engineer taking oil jobs. The annual service matters even more than on gas — burners drift out of tune, nozzles wear, and an unserviced oil boiler drinks fuel and soots its heat exchanger. A proper oil service includes combustion analysis with the burner set to the appliance's figures, a new nozzle where due, filter and hose checks, and a look over the tank and supply line.
Faults have an oil-specific flavour: lockouts from air in the fuel line after a tank runs low, blocked filters and frozen supply lines in hard weather, failing photocells and pumps at the burner, and the slow efficiency slide of a burner running rich. Diagnosis starts at the tank and works forward — fuel level and quality, line and filter, then burner — which is why an engineer who does oil weekly finds in minutes what a gas-first engineer hunts for.
Tanks, replacements and the bigger picture
Oil tanks are half the system: siting and bunding rules apply, single-skin tanks in locations that now require bunded ones come up at every survey, and a failing tank is an environmental incident waiting for a rainstorm. Replacement boiler installations run broadly £2,500–£4,500 installed depending on internal or external siting and system work, with modern condensing oil boilers substantially more efficient than the floor-standing veterans they replace. Tank replacement, where needed, is quoted alongside.
The strategic question for oil households is the same one LPG homes face, sharpened: oil prices are volatile, the infrastructure ages, and the Boiler Upgrade Scheme squarely targets off-grid fossil systems for heat pump conversion. For some rural properties a modern oil boiler remains the pragmatic choice today; for others — especially those insulating anyway — the heat pump comparison now wins. We put both quotes on the table with running-cost arithmetic rather than a default.
| Item | Guide |
|---|---|
| Typical price band | £90–£4,500 |
| Pricing basis | OFTEC-registered engineers; services fixed-price, installations surveyed |
| Typical timescale | 1–2 hours |
| Funnel | Attendance and diagnosis |
| Credentials | OFTEC registered |
Frequently asked questions
Are your oil engineers OFTEC registered?
Yes — oil work routes only to OFTEC-registered engineers, the recognised competence standard for oil-fired appliances, tanks and supply systems. Ask to see the registration; our engineers expect it.
How often should an oil boiler be serviced?
Annually, without exception — oil burners drift out of tune in a way gas rarely does, costing fuel and sooting the boiler. The service includes combustion analysis and burner setup, a nozzle change where due, and filter, line and tank checks.
My oil boiler locks out after a delivery — why?
Classically, air in the fuel line or stirred-up tank sediment blocking the filter after the tank ran low before the delivery. Both are quick fixes for an engineer, and keeping the tank from running near-empty prevents the repeat.
Should I replace my oil boiler with a heat pump?
It deserves a real look: off-grid homes are exactly who the Boiler Upgrade Scheme targets, and oil's price volatility strengthens the heat pump case. Suitability still depends on your fabric and emitters, so we'll survey and give you both numbers honestly.