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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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Welcome to Easy Fix Heating Ltd run by Ian and Dave, we undergo all aspects of the trade, no job too big no job too small were here to help you. Professional and reliable plumbers in your area. Free quotes. Boilers Tanks Leaks Bathrooms And all aspects of plumbing and heating
With 20 years of experience in the building trade personally, we cover all aspects of domestic,commercial Plumbing,heating,gas along with bathroom installation,kitchen refurbishment. we also have a vast network of other trades to cover the majority of work in the building trade. so we know wehave the Skill and knowledge to guarantee the job will be done properly and to a high quality standard.
John worked extremely hard to fulfil our brief & also had great vision when considering possibilities. He understood our needs and ensured all snagging was carried out before completion. All builders are currently pushed to the limit with supplies and staffing - John managed this to the best of his ability and was always polite, helpful and friendly.
Our aim is simple and that aim is for my self and our staff to provide excellent customer service and extremely high workmanship every time we do any job for you. When you invite us to do any work for you we will go above and beyond to provide you with a 1st class service every time. We will always work around you and your schedule, we understand everyone have different work schedules so we can work to suit those schedules and provide out of hours surveys and jobs as and when required We can’t say we will be the cheapest nor most expensive, but we can say we will charge you accordingly for the job to be done right 1st time. We don’t cut corners and we always follow all regulations at all times. We will never do any work with our you knowing and understanding the costs. We are a Cardiff based company providing services in the domestic and Commercial heating and gas sector. I set up Marshall Heating Solutions in February 2020, I have been in the industry for 21 years and I have gained invaluable experience in all aspects within the profession being a heating service, repair and installation engineer covering anything plumbing, heating and gas within domestic and commercials buildings. There really isn't much that I haven’t come across and experienced within the field, during my working career. I have successfully been a heating manager for a couple of successful heating business, before taking the plunge and setting up this company myself. I also have all the relevant training and qualifications required to complete all lines of work within the industry. All our quotations are free off charge and we never charge a call out fee Just a fair hourly fee off £65 & vat.
I cannot praise this firm enough. They removed my old boiler & fitted a new one . Also removing the gas fire & back boiler. Ben & his team were fantastic. They were efficient polite & friendly & nothing was too much trouble for them. Even when I added a couple of extra jobs! It was all done in a few days & left clean & tidy. I would recommend them any time.
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
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!
Hi there, we aim to look after our customers to make sure there happy with price & job to completion. If any problems occur on our side we will sort out free of charge. Give us a try and get a professional service from start to finish.
Scot arrived as scheduled, assessed the work swiftly and carried it out effectively. Could not ask for more.
All our work is carried out to a high professional standard we are experts in plumbing , heating and gas and take pride in all work we do ,
Lawrence from J & L Gas & Renewables Limited plumbed and fitted a new garden tap today 8th May. He quoted us a very competitive price, arrived on time, and did a wonderful and very professional job. Everything was left clean and tidy including refitting the drawers into the kitchen sink unit. In addition to an excellent, fast and professional job, Lawrence was kind and very helpful and explained everything to us. I would not hesitate to recommend him and his firm for any plumbing and gas heating work.
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.
What The Duck has been trading for 15years Specialising in combi boiler breakdown and repairs. New boiler installations and general plumbing problems.
Skytop Construction & Surveying
Oil-Fired Boiler
SkyTop is a South Coast based building services company specialising in drone surveys, roofing, property maintenance and residential building works for homeowners, landlords and property professionals. We combine hands-on experience with modern inspection technology to deliver clear reporting, reliable workmanship and a friendly, professional service. From repairs and maintenance to larger improvement projects, we pride ourselves on providing practical solutions and high-quality workmanship tailored to residential properties.
A family run heating & plumbing business based in south wales.
Great work. well done
CSC Plumbing & Heating
Oil-Fired Boiler
We have been in the business for over 25 years. We are a family run bussines pride our selves in honest and reliable. We are genuine, and we offer 24/7 call outs. We have one fixed rate which is given over the phone before we come to your house. Advice is free on the phone, and we can also video call to see the problem or help out for free. Our work covers Emergency Handman Services, Flat Packs and Shelving My knowledge is vast so if you want help CALL US you won't be disappointed!
SC Heating & Plumbing
Oil-Fired Boiler
Choose a contractor you can trust to deal with your plumbing complaints - choose SC Heating & Plumbing. Serving clients for over 30 years, I have built an enviable reputation across the London area, being well-known for reliability, competitive rates, and the professional, friendly service I believe all of my customers should receive. As a Gas Safe registered engineer, I can take care of general plumbing as well as gas boiler installations and repairs. This membership gives peace of mind that every job will be carried out in line with the latest guidelines and with care and safety. Give me a call to request a quote or for a little advice.
Full Upgrades Limited is a gas safe registered business run by Gas Engineer Grant Thomasson who has 18 years experience in the Gas Industry. We specialize in Central heating systems, boiler swaps and boiler conversions. And take on all gas work.
Came out so quickly for me. Lovely friendly man couldn’t be more helpful. Definitely use him again
BJB Plumbing and Heating Services is a new Company founded this year by an Army Veteran with 5 years Experience in Property Maintenance, specializing in Gas Appliance installation, Kitchen and Bathroom Fitting, maintenance and Plumbing.
Great work, clean and professional
PRECISION PLUMBING+HEATING
Oil-Fired Boiler
Muur Mechanical Services
Oil-Fired Boiler
We at Muur Mechanical Services are a small professional plumbing and heating company. We have over 20 years of industry experience with fully checked and vetted references. Guaranteed work done to exact current building regulations performed by fully qualified and registered engineers. For total peace of mind all work is fully insured and comes with our own guarantee. Small and larger work undertaken. Whether it's just a leaking tap or a central heating system that requires a full power flush, we can help.
Emanuel Spence have been associated with plumbing and heating repairs since 1895. Our primary interest is in service and quality to give the customer the very best repair we can.
Hi my name is Kalium Fletcher, I undertake all central heating issues, boiler installation,servicing and repairs, landlord certificates, and plumbing work. I give transparent advice so there are no hidden costs. I believe I offer a friendly honest reliable service, with customer satisfaction and competitive pricing being my main goals.
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