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Very high standard of work carried out by Mark. Solved my issue,very knowledgeable,punctual and tidy. Would recommend & certainly use again.
Patrick
Viktor and his team thanks so very much for all your hard work these guys know how to give a professional job very approachable nothing too much trouble they just get on with the job so we didn't have too worry would have them back in a heartbeat
Linda
Excellent service, easy to deal with, good price. Would recommend and will definitely use again.
Anne
For homes independent of the mains gas network, an oil-fired boiler provides reliable, powerful central heating and hot water. However, dealing with liquid fuel storage tanks, complex burner mechanics, and strict environmental regulations requires specialist skills. Whether you need a breakdown repair, a routine annual service, or a high-efficiency replacement boiler, precision calibration is essential. Rated People connects you with local heating engineers to keep your system safe. Post your job for free today.
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What can an oil-fired boiler specialist help with?
An oil heating engineer manages the heavy-duty mechanical burners, internal heat exchangers, and external fuel storage infrastructures that power rural and off-grid homes. They follow precise safety protocols to maintain, troubleshoot, and optimise your heating setup:
- High-efficiency boiler installation: Specifying, sizing, and fitting modern, energy-efficient condensing oil boilers (available as space-saving internal cupboard models or fully weatherproofed external units) to lower your annual fuel bills.
- Annual servicing and fuel jet replacement: Cleaning out thick soot and carbon deposits within the baffle plates and heat exchanger, replacing the burner nozzle jet to maintain a perfect spray pattern, and running comprehensive flue gas analysis to maximise burning efficiency.
- Emergency breakdown diagnostics: Troubleshooting locked-out burners, replacing faulty oil supply pumps, repairing photocells, and fixing defects within the motorised zone valves, expansion vessels, or digital system programmers.
- Oil storage tank inspections & fuel lines: Evaluating external plastic or steel fuel tanks for structural cracks or sun damage, testing for water contamination inside the tank, replacing oil filters, and installing electronic remote fuel level gauges so you never run empty.
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How much does oil-fired boiler installation and maintenance cost?
Oil heating systems involve heavy-duty, highly specialised components compared to standard mains gas systems. This technical complexity is reflected in slightly higher baseline component prices and specialist labour rates. Heating engineers generally charge based on the specific scope and scale of the project:
- Annual oil boiler service: A thorough safety check, internal cleaning of the combustion chamber, filter change, and nozzle jet replacement typically costs between £80 and £160.
- Emergency repair call-out fee: Pinpointing an active mechanical fault, replacing a broken fuel pump, or resolving an unexpected burner lock-out during normal working hours usually costs £70 to £110 per hour (excluding the cost of replacement parts).
- Full boiler replacement (labour only): Swapping an old, broken oil-fired unit for a modern, high-efficiency condensing model in the exact same location on existing pipework ranges from £800 to £1,500.
- Complete system overhaul: If your property requires a brand-new external condensing boiler alongside a modern, dual-walled bunded oil storage tank, fresh underground fuel lines, and updated smart controls, full installation costs can range from £3,500 to £6,000+.
What is the difference between internal and external oil boilers?
If you are upgrading your off-grid heating system, one of the biggest design decisions you will make is choosing where the boiler unit itself sits. Both options offer clear functional and space-saving advantages for your property:
- Internal oil boilers: These are designed to be installed inside the home, typically hidden away inside a kitchen utility cupboard, a dedicated utility room, or a garage space. Because they are completely protected from severe winter weather and freezing temperatures, they are incredibly easy to access for routine servicing and carry a slightly lower risk of frost damage. However, they take up valuable internal storage footprint and produce a noticeable mechanical hum when the pressure burner fires up.
- External oil boilers: These are fully self-contained, heavily insulated, and weatherproofed units that sit entirely outside your property on a level concrete base slab. They are fantastic for freeing up premium cupboard space inside your home and keeping all operational mechanical noise completely outdoors. While highly convenient, they do require insulated underground pipework (known as a heat main) to prevent thermal energy loss as the hot water travels from the garden into your home.
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Other oil-fired boiler FAQ's
What mandatory qualifications must an oil boiler engineer hold?
Unlike mains gas which uses Gas Safe, oil-fired appliances are governed by OFTEC (Oil Firing Technical Association). It is vital to ensure your technician is actively OFTEC-registered. This guarantees they are certified to handle liquid fuel lines, adjust pressure burners safely, and self-certify that their work complies with strict UK building and environmental regulations.
Are there government grants available to replace an old oil boiler?
The UK Government’s Boiler Upgrade Scheme (BUS) does not provide funding to install a new oil boiler, as the focus is transitioning homes away from fossil fuels. However, if you are looking to scrap your oil system entirely, the grant offers up to £9,000 for off-grid homes to switch to an eco-friendly air source heat pump, significantly lowering your upfront upgrade costs.
What are the top questions to ask an oil heating specialist before hiring?
To protect your property, always ask: Are you currently OFTEC-registered, and can I see your ID card? Does your installation quote include flushing the existing radiators and testing the oil tank for water? Do you carry valid Public Liability Insurance to cover accidental oil spills or property damage?
Sign up as a oil-fired boiler specialist
Are you an OFTEC-registered heating engineer, oil tank installer, or off-grid plumbing specialist? Homeowners are actively looking for certified local professionals to service pressure burners, replace aging oil boilers, and handle emergency lock-outs. Join our network today to gain access to local oil heating leads, fill gaps in your diary, and grow your business.
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My focus in my work life is to provide a service that will leave my customers satisfied beyond their expectations, this is reflected in the over 100 five star ratings I have received from my customers. My aim is always to keep the customers for life by providing a great service.
Not a comfortable experience. Upped the price upon completion after agreement. Agreement had already been pushed beyond the max quote. Had to come back out the following day to put right a leak left behind & stuffed badly made holes through exterior wall with kitchen towel. The work already needs rectifying again & new tradesperson is miffed at the work done & price charged. Feel vulnerable leaving this as he talked about someone else who’d left a negative review to me.
Rated People
Oil-Fired Boiler
Loft conversion specialist, with 25 years worth of experience.
Mainly I'm providing domestic services like plumbing & heating, Boiler Installation, Boiler Service, Landlords Gas Certificate, Plumbing Maintenance, kitchen & bathroom fitting. with Professional Quality, Price and Guarantee
Came when he said he’d be here and did a great job. Would definitely use again. Highly recommended!
Bsure boilers and bathrooms is a family run business. We have been gas safe registered for over 30 years. We offer our customers a friendly and reliable service! We offer reasonable rates and free quotes. We carry out boiler replacements, servicing and repairs, pressurized hot water tank installation, landlord certificates, bathroom and wet room installations and lots lots more. Check out our website for deals @ bsureboilers.co.uk We look forward to hearing from you
Thanks Mark for the quick response and fantastic work! Totally recommend Mark to anyone
EcoGas is a family run business and have been established since 2008, we are a progressive and successful company with considerable experience within the Domestic Gas and Oil heating industry. We are well-established and a growing business based in Renishaw, Sheffield, with a loyal customer base spread throughout the S and DN postcodes. Being a family run business we believe in providing top quality customer service at competitive prices. At EcoGas we specialise in the installation of domestic gas, oil and electric boilers, central heating, smart controls and Unvented cylinders. We also offer a full call out facility for breakdowns, servicing, power-flushing, landlords inspections and the facility for finance on new installs. EcoGas are Vaillant Master tec , Glow worm and Grant G1 accredited installers with 10 year warranties as standard. With city and guilds level 3 technical heating engineers you can be assured of qualified engineers.
Extremely efficient, prompt, helpful- a pleasure to work with and so polite, respectful and totally satisfied with a job well done by an super pleasant workman- thank you, number kept for future use and to happily give to friends
3 hours from first contact to working boiler. Dose not get better than that.
Screwfix Trade apprentice of the year finalist 2017 ThermaGas has a workforce of highly experienced and fully qualified engineers to support all your Gas Boiler installs/Servicing/Gas safety checks/breakdowns/Smart Thermostats/Heating systems/General plumbing
Alfie came round when he said he would and have us a good competitive quote on a combi boiler straight swop. He said he would come back within a week and install and he came back on the agreed day and did the job. Highly recommended.
We Heat London LTD
Oil-Fired Boiler
We Heat London is a trusted London heating company specialising in boiler installations, repairs and servicing. Our experienced Gas Safe registered engineers provide reliable heating solutions across London, from new energy-efficient boiler installations and system upgrades to boiler breakdowns, servicing and gas safety checks. We pride ourselves on honest advice, professional workmanship and excellent customer service. Whether you need a new boiler, heating system upgrade, unvented cylinder or help getting your heating back up and running, our team is here to help. Keeping London Warm.
I have 8+ years in the industry Always go the extra mile for my customers Cover all aspects of plumbing, heating and gas works. Gas safe registered Level 2 NVQ in plumbing & heating Water regulations G3 vented and unvented cylinders.
Very quick and tidy job, very polite, would recommend
Family run plumbing heating & building company based in essex please contact us for a free quotation we will beat any quote We aim to be with you within the hour Over 30 years experience No call out charge Free estimates on all boilers & bathrooms Gas safe registered for over 20 years 5 million public liability insurance No sub contractors used all employed staff only We are open 24 hours a day 7 days a week
Nigel responded quickly, scheduled the work and completed it to a good quality.
Build To Precision
Oil-Fired Boiler
Build to Precision Group brings over 20 years of experience in the construction industry, delivering high-quality workmanship across residential and commercial projects. Building on this solid foundation, we have recently expanded into a dedicated maintenance division, offering reliable, efficient, and professional property maintenance services to meet our clients’ ongoing needs.
Under taking works on any domestic gas appliances. Services, installations, new builds or refurbishment. Also plumbing works such a bathroom, kitchen or heating installations. Our main aim is customer satisfaction and do our best to achieve it. We are offering reasonable prices and our working hours are flexible.
The job was done the same day with no drama. I'm very pleased.
With over 30+ years experience, our priority is to keep all our customers happy and ensure a quality finish. We specialise in all building work from plan/design and build. We also do electrical work, plumbing, carpentry a joinery, plastering, tiling and decorating. We can manage all paper work with council and authorities. Fully covered with Liability Insurance up to 5 Million. No job is too big or too small. Get in touch for a free estimate and expert advice.
Quick to respond and installed the sockets efficiently. He made sure everything was tidied up afterwards. Highly recommend.
1490957221153604
Oil-Fired Boiler
I am a qualified plumber and Gas Safe Engineer . I have done upto NVQ level 3 in plumbing and have work experience for about 11/12years. I have also done an electrician course. In the mean time I am undertaking any bathroom related contract jobs, plumbing (boiler repair, installation), electric work, carpeting and tiling.
Good professional job, came straight away, recommended
Hi Our friendly experienced team provides a complete service. We can take care of your whole project large or small including new boilers, kitchens, bathrooms, gas, plumbing and all central heating works. We Look Forward To Hearing From You! Best Wishes JDL team.
Plumb & Plumber Ltd came to be after a 13 year career in the Army. My military background and 12 years qualified in the heating, plumbing and gas industry all comes together to ensure you get a quality, reliable and punctual service.
An excellent boiler engineer, who goes and above and beyond what is required, to ensure that the customer's entire system is fault-free.
DS Gas & Building Services Ltd – Heating Specialists You Can Rely On At DS Gas & Building Services Ltd, we’re true heating specialists dedicated to keeping your home safe, warm, and efficient all year round. With years of experience in the heating industry, we provide expert boiler servicing, repairs, and installations, as well as professional air source heat pump installations and maintenance. We pride ourselves on delivering a first-class service — every job is carried out to the highest standard, fully compliant with Gas Safe. Whether it’s a routine boiler service, an emergency repair, or upgrading to a modern, energy-efficient heating system, our focus is always on reliability, safety, and long-term performance. Customers choose us for our attention to detail, honest advice, and high-quality workmanship, booking reminders & confirmations. From initial consultation to final handover, you can expect transparent communication and exceptional results — every time. Our services include: - Boiler Servicing & Safety Inspections (Gas, LPG & commercial) - Boiler Repairs & Breakdowns - New Boiler Installations & System Upgrades - Air Source Heat Pump Installation & Servicing - Central Heating Fault Diagnosis & Maintenance DS Gas & Building Services Ltd – Professional. Reliable. Specialist Heating Engineers.
Danny was punctual and charged an honest price for a service. I can't comment on the work as I am not a gas engineer but the heating is still working!
If you need plasterer, painter, kitchen fitter bathroom fitter or general building work we can help you immediately. We guarantee the highest quality of work
Couldn’t be happier with the remedial painting. Friendly from the start and no upselling at all, they just got on with it and the finish is excellent. They even sorted doors that wouldn’t close, shaving them to fit, and cleaned all the hardware. The flat was left spotless, with no paint specks anywhere. Extra bits I asked for were done with no fuss, and they even offered to source a missing handle part afterwards. The place now looks crisp and brand new. Highly recommend
HEATEX HEATING SERVICES
Oil-Fired Boiler
Heatex Heating Services. Are your go to plumbers and gas engineers. We strive for a high quality service and workmanship.
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