Everything you need to know about new boiler costs is right here in our guide; including what a new boiler will cost you, how that cost is composed and any support and grants available to help with the cost.
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A new boiler with installation will cost between £1,500 and £15,000.
The cost is made up of two main parts: the boiler unit itself and the installation of the boiler.
Boilers cost from £500 right up to £10,000 for the boiler only, whilst installation will cost an additional £1,000 to £5,000 depending on the additional components required to complete the job.
Boilers typically last between 10 and 15 years and then they start to wear out. Breakdowns can be costly and very inconvenient as your home can be left without heating and hot water. There will come a point when your boiler becomes beyond economic repair and you need to start thinking about a new one.
In this article we break down each element of the cost to help you understand what you should expect to pay for your new boiler, how the costs are calculated and help you get an online quote.
There are different types of boilers and the cost of each differs based on the technology.
The main boiler system types are:
And across the boiler types they can be powered by different fuels:
We will cover the costs of each of these boiler types in more detail in the next sections
New Boiler Type | New Boiler Quote (ex Installation) | New Boiler Quote (inc Installation) | New Boiler Quote Comparison |
---|---|---|---|
Combi Boiler | £400 - £3,000 | £1,500 - £5,000 | Free Comparison > |
System Boiler | £500 - £3,500 | £1,600 - £5,000 | Free Comparison > |
Conventional Boiler | £500 - £3,500 | £1,600 - £5,000 | Free Comparison > |
Electric Boiler | £500 - £2,500 | £1,600 - £4,000 | Free Comparison > |
Oil Boiler | £600 - £3,500 | £1,700 - £5,000 | Free Comparison > |
Biomass Boiler | £7,000 - £15,000 | £10,000 - £18,000 | Free Comparison > |
Combi (swapping from back boiler) | £400 - £3,000 | £2,495 - £6,500 | Free Comparison > |
Combi (swapping from Conventional) | £400 - £3,000 | £2,195 - £6,000 | Free Comparison > |
A combi boiler costs between £500 and £3,000 for the boiler only with no installation. Combi boilers are by far the most popular boiler type as they are space saving (no hot water tank required in an airing cupboard) and provide instant heating and hot water on demand.
A new combi boiler to replace an existing combi boiler (same location) will cost between £1,500 and £4,000 fully installed.
Other boiler system swaps for a new combi boiler incur different costs due to additional work and are covered later in this article.
Gas combi boilers cost from £500 to £3,500 for the boiler only, when installation is included the cost range is £1,500 to £5,000 depending on the size of the job and the capacity of the boiler required.
LPG combi boilers cost between £550 to £3,550 (supply only), with installation that stretches to £1,550 to £5,050.
An LPG (Liquid Petroleum Gas) combi boiler is usually exactly the same as a Gas combi boiler all it needs to run on LPG is a conversion kit which costs about £50. LPG boilers also required a supply of LPG usually from a tank in the garden, replacing the tank would be an additional cost.
Electric combi boilers cost between £1,250 and £4,000 just for the boiler and are typically £3,250 to £5,750 including installation.
Electric combi boilers are less complicated than Gas boilers as there are fewer moving parts and no gas supply required, so they are usually quick and easy to repair. However they do tend to be more expensive to run.
Oil combi boilers cost around £2,500 to £6,000 just for the boiler which rises to £3,500 to £8,000 including installation.
Oil combi boilers tend to cost more than boilers running on other fuels as they need bespoke parts and tend to be more complicated jobs. They are only installed in properties not connected to the mains gas grid and require an oil tank to supply the oil to the boiler.
Oil boilers do tend to be less efficient than their gas equivalents so can cost more to run. As with LPG boilers replacing the oil tank is an additional cost.
The cost to run a combi boiler depends on a few factors
Gas to power a Gas combi boiler will cost about £100 to £130 a month to run, whereas electricity for an electric combi boiler will cost £190 to £210 per month to run. Electric combi boilers are much more expensive to run than gas combi boilers as the cost of buying electricity is higher than gas.
Oil combi boilers are typically less efficient than a gas combi boiler and oil tends to be more expensive than gas so running an oil combi boiler typically costs between £140 to £160 a month just for oil.
So Gas combi boilers are the cheapest to run, then oil, then electric are the most expensive of the three from a fuel perspective.
It's worth doing your research into the boiler brand and model you are purchasing to check how reliable it is and the length of warranty. Typically boilers with longer manufactuerer backed warranties are the most reliable, so even if your boiler breaks down and you have a 10 year warranty you shouldn't have to pay anything for repairs. However if you go for a budget boiler with a 2 year warranty and it breaks don in year 3 the whole bill falls on you.
Most manufacturers recommend yearly boiler servicing to keep it in good working order and to keep you warranty valid. An annual boiler service is about £65.
If your boiler is out of warranty you may want to consider boiler insurance or a boiler care plan. Depending on the level of cover you choose it will cost between £10 and £50 a month.
Replacing a conventional boiler with a combi boiler costs between £2,500 to £6,000 including full installation.
Changing the type of boiler is usually more expensive than a like for like boiler type install due to additional parts being needed and more work being required so higher labour costs.
Changing a system boiler to a combi boiler will cost about £2,500 to £6,000 fully installed.
As with the conventional boiler swap the job will cost more than replacing with the same type of boiler due to the additional work needed to complete the job.
Removing an old back boiler to replace with a combi boiler will cost between £2,500 to £6,000 including installation.
Since 2005 installing new back boilers has been illegal in the UK so old back boilers will need to be replaced with a different boiler type. The new combi boiler will be in a different location to the back boiler which requires additional work and parts reflected in the higher price.
A new system boiler will cost around £500 to £3,000 (supply only) and £2,000 to £5,000 with full installation.
System boilers can be fuelled by gas, LPG, oil and electric. They use the mains water supply to the property rather than a cold water tank so often have strong water pressure and store hot water in a separate tank.
A conventional boiler costs between £500 and £3,000 (boiler only) which rises to £2,000 to £5,000 including installation.
Conventional boilers can run on mains gas, LPG or oil. They are typically found in larger, older houses due to the space they need for the cold water tank (they are gravity fed systems so the tank is usually in the loft) and and the hot water tank (usually in an airing cupboard).
A condensing boiler will cost from £500 to £3,000 for just the boiler itself and between £2,000 and £5,000 with installation.
All new gas boilers installed in the UK since 2005 must legally be condensing boilers. They work by having two heat exchangers rather than the one that most non-condensing boilers have, meaning they are much more efficient.
A Biomass boiler costs from £7,000 to £15,000 for the boiler only and with installation £10,000 to £18,000.
Biomass boilers come in various sizes depending on the heating requirement, the larger the boiler the bigger the cost. The other key factor on the cost of the biomass boiler is whether it is an automatic or manual fuel loading boiler. Manual are, of course, cheaper but less convenient.
They are expensive to buy and install compared to gas boilers but can be cheaper to run as the fuel costs between £450 and £1,500 a year depending on the type of wood used and how much is required;
Each type of boiler has it's own pros and cons and some fit better with smaller homes and less strenuous hot water requirements than others. In this next section we explore each of the main boiler types in a bit more detail.
Pros
Cons
Pros
Cons
Pros
Cons
Pros
Cons
A big proportion of the cost of a new boiler installation, other than the new boiler itself, is the labour, parts and additional items.
The installer you choose must be accredited to install your boiler, with the regulations being split by fuel type
For all boiler types the installer also needs to be a
Part P electrically qualified electrician to wire in a boiler in the UK. If your installer doesn’t have this qualification they will need to also hire an electrician to complete this part of the install.
A boiler installer’s day rate is usually £300-£400, so the labour cost of the new boiler installation will vary depending on the amount of days needed to finish the job.
The total cost of a new boiler installation depends on many things which we’ll summarise now
Combi boilers tend to be the cheapest installations (vs. conventional and system) as they are the easiest jobs to install.
See earlier in this article for the cost of each type of boiler.
Bigger kW output capacity boilers cost more than smaller ones, bigger homes will need a larger capacity boiler due to higher heating and hot water demands.
Premium brands such as Worcester Bosch and Vaillant tend to be more expensive than budget boiler brands.
Their increased cost is due to longer standard warranties and better reliability. We cover boiler cost by manufacturer later in this article.
The longer the warranty the bigger the upfront cost. But if the boiler were to breakdown and the repairs were covered by the extended warranty then it may be lower cost overall.
Moving the location of a boiler costs about £150 in the same room, £300 to a different room on the came floor and £500 to a different floor.
Each new radiator will cost between £200 and £300 to install, so the total price of repalcing all the radiators depends on how many you need to heat your property.
If you need a new thermostat as part of your boiler installation then that is another cost.
A smart controller is usually £150 per unit (not installed) and you will need one per heating zone in the property. Quality brands are Hove, Nest and Tado.
A powerflush costs between £300 and £1,000 depending on the size of the property. Generally larger properties have more radiators and a larger central heating system so the powerflush will cost more.
A magnetic filter will add between £60 and £200 to the cost of your boiler install. Many quotes come with them already included as they are vital to keep gunk out your new boiler.
Additional pipework will cost typically £350 to £1,000, depending on how big the pipe run needed. Sometimes required for a boiler move, or sometimes the existing gas run pipe does not meet the current regualations meaning an upgrade is necessary.
A new hot water tank will add about £250 to £350 to the cost of the boiler installation. You can usually tell if your hot water tank is on the way out if you can feel heat coming off it - if it's in good working order it should keep all the heat inside to keep your hot water nice and hot.
One way to help pay for your new boiler is with available government grants.
Currently the Boiler Upgrade Scheme can offer grants to help with the cost of a new heat pump or a new biomass boiler if it is replacing a fossil fuel boiler. Available are:
Very simply you need to meet the follow criteria to be eligible:
Scotland has two grants and interest free loans on offer from the Scottish government for energy saving such as renewable heating, central heating, insulation and draught proofing:
So now you know all there is to know about new boiler costs:
Now all that is next is to compare new boiler costs
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