Compare Boiler Prices: The Real Cost of Boiler Installation
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Combi, System & Conventional Boiler Prices 2026
If this is the year to replace your existing boiler, we’re sure there’s one question you want answered – how much does a new boiler cost? We take a look at the boilers available to buy, different boiler prices, and help you match the right type of boiler to your home, and at the right price.
Different Types of Boilers
Ignoring fuel types, such as gas, oil, and LPG, there are essentially two main types of boilers – conventional boilers and combination (or combi) boilers. They work differently and it’s useful to understand the different functionality so you can work out which type is right for you and accurately compare boiler costs.
A conventional boiler installation has a cold water tank in the loft and a hot water cylinder, usually in an airing cupboard upstairs. Unlike conventional boilers, combi boilers don’t need a hot water cylinder. Combi boilers draw and heat the water directly from the mains, providing an unlimited supply of hot water. It’s much easier and quicker to heat your home – no need to wait for the water to re-heat if you’ve been doing the washing up and someone in the household wants a bath!
Combi boilers are also much more compact than traditional boilers. Most homes have them fitted in their kitchens neatly stored away behind a storage cabinet door, so they save plenty of space.
Compare Boiler Prices
If it’s time for a new boiler installation, a new combi boiler could be the ideal fit for your property. However, it’s essential to work with your installer and choose a boiler that is closely suited to your needs. This keeps the running costs lower and reduces your energy bills. Here are some average prices.
| Boiler Type | Price Range |
| Gas combi | £499 to £825 |
| Gas system | £512 to £910 |
| Gas conventional | £492 to £3,600 |
| Oil Combi | £2,057 to £3,191 |
| Oil system | £1,335 to £2,407 |
| Oil conventional | £1,107 to £3,770 |
What is a professional boiler installer likely to recommend to you?
If you live in a flat or a smaller home, most professional installers will recommend a boiler with an output of between twenty-four and twenty-seven kilowatts. Boilers generating this power can cost between £480 and £1,400.
If you live in a larger property, your installer will probably recommend a twenty-eight to thirty-four-kilowatt boiler instead. A large property is classified as a house with three to four bedrooms. If you choose one of these boilers, you can expect to pay between £509 and, at the very top end of the range, £2,740.
If you occupy a very large home with multiple bathrooms, a professional installer is likely to recommend a new boiler replacement generating thirty-five kilowatts or above as the most suitable and economical solution for you. These powerful boilers range in price from £750 to £1,990.
New Boiler Costs By Manufacturer
With any boiler upgrade scheme or new central heating system, it’s always good advice to buy the best boiler you can afford. Top boiler models are durable and tend to retain high levels of energy efficiency for longer. Let’s take a look at the leading boiler manufacturers which supply installers across the UK and the average cost of a new boiler.
New Boiler Installation Prices
It’s important to remember when you’re looking at boiler replacement costs, that many quoted prices don’t include installation. At Compare Companies, the quotes we provide are broken down fully to include the boiler price, installation costs, and other charges like disposal of your old boiler and a system flush if required.
Many people search for “British Gas boiler prices” online when looking for boiler prices with installation. It’s no surprise as British Gas is a household name, and the country’s largest supplier of natural gas. However, there are other installers like HomeServe and BOXT who are proactively trying to increase their market share plus smaller regional companies which are worth considering when you are looking for a new boiler. You’ll be surprised at how boiler installation costs can vary from one installer to another. If you choose British Gas to install your boiler, you may be paying more than you need to.
When it comes to installation, it’s always worth using energy companies like British Gas as the starting point for a quote. However, you should also look at independent traders who typically charge up to a third less. Boiler costs can vary dramatically based on different factors. Consequently, the cost of a new boiler and central heating system from British Gas may not end up being the best deal for you. Try our boiler price comparison and see the difference for yourself.
What Factors Impact Boiler Prices?
Different types of homes require different types of boilers but there’s more to it than that. Size is relevant, not just in terms of where you want to locate the boiler but in terms of output and flow rate.
Your new boiler installation needs to have enough output to keep your home warm and provide water heated to the temperature you require. The flow rate refers to the volume of water your boiler can deliver in litres per minute.
A boiler installer will look at the size of your property and lifestyle demands when they consider what is the right boiler for you.
What Factors Impact Boiler Prices?
Different types of homes require different types of boilers but there’s more to it than that. Size is relevant, not just in terms of where you want to locate the boiler but in terms of output and flow rate.
Your new boiler installation needs to have enough output to keep your home warm and provide water heated to the temperature you require. The flow rate refers to the volume of water your boiler can deliver in litres per minute.
A boiler installer will look at the size of your property and lifestyle demands when they consider what is the right boiler for you.
Your questions answered
Get The Best Boiler Prices With Quotes From Expert Local Installers
We make getting a new boiler quote online easy and quick. At Compare Companies, we provide several quotes for your new boiler installation so you can be certain you have the best price and the right installer for you. Source energy efficient boilers from expert local suppliers with accurate and detailed cost breakdowns that include installation. That’s no hidden charges! Remember, our service is completely free and without obligation, so you don’t have to accept any of the quotes.