How Much is a New Oil Boiler in 2022? Fran Whittaker-Wood Last updated on 11 August 2022 10 min read ✔ A new oil boiler typically costs £4,700, including installation✔ Installing a new oil boiler can cost between £800 and £2,000✔ Plenty of big brand names make oil boilersGas boilers are the most popular method for heating homes in the UK, but if you live in one of the four million homes not connected to the mains gas network, then you might have to rely on a different fuel for your central heating: oil.Because fewer homes use oil heating, there are fewer oil boilers on sale than gas boilers, but there are still dozens of models to choose from, and they come in a wide variety of sizes and prices.If you're considering getting your home a new boiler, why not pop your details in this short form, and our local installers will be in contact with free quotes for you to compare.What's on this page?01 | New Oil Boiler Cost02 | Oil Boiler Prices by Brand03 | Installation Costs04 | Oil Storage Tank Costs05 | Buying on FinanceHow Much Does a New Oil Boiler Cost?Oil boilers tend to be more expensive than gas boilers; the price of a typical gas boiler is £4,000, whereas the average oil boiler costs £4,700.Entry-level oil boilers typically start from around £2,000, while top-of-the-range oil boilers can cost over £6,000.As a rule of thumb, the larger the oil boiler, the more expensive it will be. The size of a boiler is measured in kilowatts (kW), which tells you how powerful it is. Usually, the larger your home is, the bigger the boiler you’ll need.The table below shows you the typical cost of oil boilers for small, medium and large homes.Property SizeNumber of BedroomsNumber of BathroomsNumber of RadiatorsBoiler SizePrice RangeSmall1 to 21up to 1024 kW to 27 kW£2,200 to £4,500Medium3 or 4up to 2up to 1528 kW to 34 kW£3,500 to £5,000Large4+2+15+35 kW to 42 kW£4,000 to £6,500Prices will also be affected by what type of oil boiler you get. There are 3 types of oil boiler available: combi, conventional and system models.Combi oil boilers are often the most expensive, but they don’t require you to install a water tank or cylinder in your loft or airing cupboard (saving you lots of room and money!).The table below shows you the price range of combi, conventional and system oil boilers:Boiler TypePrice RangeCombi£2,300 to £5,600Conventional£2,100 to £4,900System£2,000 to £4,700If you want a better idea of how much a new boiler will cost you, pop your details in this short form, and our local installers will be in contact with free quotes.Oil Boiler Running CostsYou’ll also need to think about the running cost of your oil boiler. The typical annual cost of heating a three-bedroom house with an oil boiler is £1,088, compared to £888 for a gas boiler.OFTEC (the trade association for oil heating engineers), says you can lower your heating bills by 20-30% if you upgrade from an old oil boiler (seven years old or more) to a modern, efficient oil boiler.Oil Fired Boiler Prices by BrandThe five leading manufacturers of oil boilers in the UK are: Worcester Bosch, Grant, Mistral, Firebird and Warmflow.Grant and Worcester Bosch are considered to be the best boiler brands in terms of their build quality, reliability and ease of use, with the Worcester Bosch Greenstar Heatslave II being the UK’s most popular oil boiler.Below we’ve listed the cheapest and most expensive combi, system and conventional oil boilers produced by each of the five brands.01 | Worcester Bosch02 | Grant03 | Mistral04 | Firebird05 | WarmflowWorcester Bosch Oil Boiler PricesCombi BoilersModelSizeEfficiencyStandard WarrantyTypical PriceGreenstar Heatslave II18kW91%2 years£2,300Greenstar Heatslave External32kW90%5 years£2,736Conventional BoilersModelSizeEfficiencyStandard WarrantyTypical PriceGreenstar Danesmoor18kW91%5 years£1,429Greenstar Danesmoor External32kW90%2 years£2,582System BoilersModelSizeEfficiencyStandard WarrantyTypical PriceGreenstar Danesmoor18kW91%5 years£1,340Greenstar Danesmoor External32kW90%2 years£2,530Grant Oil Boiler PricesCombi BoilersModelSizeEfficiencyStandard WarrantyTypical PriceVortexBlue Internal21kW91%2 years£1,700VortexBlue External26kW92%2 years£2,500Conventional BoilersModelSizeEfficiencyStandard WarrantyTypical PriceVortex Eco Utility15kW91%2 years£1,247Vortex Pro External58kW93%2 years£2,770System BoilersModelSizeEfficiencyStandard WarrantyTypical PriceVortex Eco External System15kW91%2 years£1,630Vortex Eco External58kW93%2 years£2,770Mistral Oil Boiler PricesCombi BoilersModelSizeEfficiencyStandard WarrantyTypical PriceStandard C120kW87%2 years£1,800Outdoor Mega Combi Plus CODMC770kW90%2 years£4,600System BoilersModelSizeEfficiencyStandard WarrantyTypical PriceS120kW87%2 years£1,320CS441kW93%2 years£3,200(Mistral don’t produce conventional oil boilers)Firebird Oil Boiler PricesCombi BoilersModelSizeEfficiencyStandard WarrantyTypical PriceEnviroblue Combi-Pac External20kW93%2 years£1,300Eviroblue Combi Internal35kW92%2 years£3,450Conventional BoilersModelSizeEfficiencyStandard WarrantyTypical PriceEnviromax Kitchen Internal20kW93%2 years£1,270Eviromax Popular Boilerhouse73kW92%2 years£2,500System BoilersModelSizeEfficiencyStandard WarrantyTypical PriceEnviroblue Kitchen Internal20kW93%2 years£1,250Eviroblue Kitchen Internal35kW93%2 years£2,000Firebird Oil Boiler PricesCombi BoilersModelSizeEfficiencyStandard WarrantyTypical PriceEnviroblue Combi-Pac External20kW93%2 years£1,300Eviroblue Combi Internal35kW92%2 years£3,450Conventional BoilersModelSizeEfficiencyStandard WarrantyTypical PriceEnviromax Kitchen Internal20kW93%2 years£1,270Eviromax Popular Boilerhouse73kW92%2 years£2,500System BoilersModelSizeEfficiencyStandard WarrantyTypical PriceEnviroblue Kitchen Internal20kW93%2 years£1,250Eviroblue Kitchen Internal35kW93%2 years£2,000Warmflow Oil Boiler PricesCombi BoilersModelSizeEfficiencyStandard WarrantyTypical PriceUtility UC70HEE21kW89%5 years£1,345Kabin Pak KC70HEE21kW89%2 years£1,995Conventional BoilersModelSizeEfficiencyStandard WarrantyTypical PriceBoilerhouse B70HE21kW91%7 years£1,045Utility HE U9HE26kW91%7 years£1,990System BoilersModelSizeEfficiencyStandard WarrantyTypical PriceUtility US70HE21kW91%5 years£1,175Kabin Pak KS90HE26kW91%2 years£1,790Cost to Install a New Oil BoilerOn top of the cost of your new oil boiler, you’ll also need to pay to have it installed in your home. Did You Know? You can save more than £400 each year, just by switching your home’s energy supplier. If you’re looking to cut down your bills, this one’s a bit of a no-brainer.That’s why we’ve partnered with Switchd. With four different price plans (including a free option), Switchd will find you cheaper, greener energy suppliers in no time.How much you’ll be charged will depend on the amount of work involved in the installation. Swapping from a conventional model to a combi model, for example, will cost a lot more than if you simply replaced your existing combi oil boiler with a new one.Installations that involve removing or adding parts such as water tanks and pipes, or include work on your wider central heating system, will be more expensive.Always use an OFTEC-registered engineer to install your oil boiler and central heating system. This ensures that it's installed safely and by someone who's properly qualified to do the job.All OFTEC engineers must complete a training course before they are accredited, and undergo regular inspections. You can find OFTEC-registered installers on the OFTEC website.Don’t Forget the Cost of the TankIf you’re buying an oil boiler for the first time, you’ll also need to buy a tank to store the oil which fuels your boiler. These storage tanks are pretty bulky, and will need to be installed outside your home in a place where it won’t be exposed to heat or fire.Domestic oil storage tanks come in a variety of sizes up to 3,500 litres, but most homes will only need around 1,000 to 1,400 litres of storage capacity.As a rule of thumb, the larger your oil boiler, the larger the storage tank you’ll need. A boiler engineer will be able to advise you on the correct size for your home.Oil storage tank prices start from around £1,000 and go up to more than £2,000, depending on their size. You can also rent a tank from your oil supplier, for a monthly fee. The table below shows you the typical price of differently sized oil storage tanks:Tank Size (litres)Typical Price1,000£1,2001,100£1,2501,200£1,3001,300£1,3501,400£1,4002,000£1,6002,500£1,650Buying on FinanceFor many homeowners, buying a new oil boiler can be a pretty big investment, and one that you might not have all the money to cover. But don’t worry – many companies offer you the option of buying your new boiler on finance.What this essentially means is that you borrow some (or all) of the money you need to buy your new boiler. You then pay back the amount you owe in small monthly instalments, usually over two to five years.This allows you to spread the cost of your new oil boiler and removes the burden of you having to pay for it in one go.Most finance agreements require you to pay interest on your monthly repayments, meaning you’ll end up paying more for your oil boiler than if you bought it upfront.You’ll also need to pay a deposit to secure your boiler (often around 10% of the total cost), but there are some deals around that don’t require a deposit.Boiler companies offer a range of finance deals that have different repayment periods, interest rates and deposit amounts. Eligibility is subject to credit checks and all applicants must be aged 18 or over and live in the UK.We recommend you shop around and get a quote from at least three companies to find a finance agreement that suits your needs.The table below shows you some examples of finance options for a new oil boiler:Oil Boiler CostDeposit AmountLoan AmountMonthly Repayment AmountMonthly Interest RateLength of LoanTotal Repayment Amount£1,900£0£1,900£79.160%2 years£1,900£3,000£300£2,700£86.499.9%3 years£3,113.64£3,000£300£2,700£56.719.9%5 years£4,192.80£3,000£300£2,700£34.499.9%10 years£4,192.80What's next?Hopefully, you're feeling more confident about whether an oil boiler is right for your home. Once you've made this decision, it's onto the serious stuff – finding the best deal for you.This is where we come in. If you're after a new boiler, all you have to do is fill in a few quick details on this short form, and our local installers will be in contact with you shortly with free quotes. Fran Whittaker-Wood Editor Fran is The Eco Experts’ resident solar panel and double glazing oracle She loves orangutans and is passionate about protecting the planet’s rainforests from the unsustainable production of palm oil. And minstrels.