How Much Does a New Boiler Cost?
A guide to replacement and new boiler prices.
A reliable source of hot water in the home is something we tend to take for granted. But when your gas boiler starts having serious problems or completely fails, what are your options for a new boiler and how much will it cost?
Modern gas boilers are very energy efficient compared to some older installations – if your existing boiler is only 50% efficient and your new one is 90% efficient, it means that you could see the cost of running it drop by almost half.
There is a lot to the pricing of replacement boilers and the boilers themselves vary a lot in price as you can see from the tables below, due to things like power outputs or flow rates etc.
Labour (the cost of the work) forms a very big part of the overall cost and can make a huge difference. The more complex and lengthy the replacement works are, the higher the final costs are going to be, but you can expect to find average prices for fully fitted new boiler costs at around £2,000 to £2,500.
How much does a new combi boiler cost?
Combi boilers are very popular products because they are compact, easier to fit than a “regular” system and can run your hot water and central heating. They don’t need a separate water tank and so this saves money on buying and installation costs.
The output for this type will range from 24kW to 42kW. For a small house or flat 24 to 30kw would be OK, but for a larger property you may require at least a 30kw to 42kw unit.
There are so many variables with pricing that it’s very difficult to be accurate with fully fitted combi-boiler prices, so please bear in mind that what follows is only a rough guide based on replacing the boiler in the same place and no extra work, such as flushing etc.
You should have a specialist visit your home, carry out an assessment and provide a full written quote – we can arrange that for you here: GET QUOTES
Fitted combi boiler prices
|Manufacturer||Output||Fitted prices range|
|BAXI||24 kilowatt||from £1,400 to £1,600|
|VAILLANT||32 kilowatt||from £2,100 to £2,200|
|BAXI||40 Kilowatt||from £1,600 to £1,800|
Supply only combi boiler prices
|Manufacturer||Output||Boiler only price range|
|BAXI||24 kilowatt||from £600-800|
|VAILLANT||24 kilowatt||from £600-800|
|WORCESTER BOSCH||30 kilowatt||from £700-850|
How much does a new condenser boiler cost?
Regular or convetional boilers (ones with a hot water tank) are capable of supplying hot water and running the central heating with ease. They are great for large households where everybody wants to use the hot water at the same time. However, they can be expensive to replace, often needing more work done than just swapping out the boiler.
Fitted Condenser boiler prices
|Manufacturer||Power output||Fitted prices range|
|BAXI||18 kilowatt||from £1,600 to £1,700|
|WORCESTER BOSCH||30 kilowatt||from £2,100 to £2,200|
|VAILLANT||38 kilowatt||from £2,100 to £2,200|
Supply only Condenser boiler prices
|Manufacturer||Power output||Supply only price range|
|VAILLANT||18 kilowatt||from £700 to £800|
|WORCESTER BOSCH||44-55 kilowatt||from £1,500 to £1.700|
|POTTERTON||11-12 kilowatt||from £500 to £600|
Other considerations about replacement or new boiler prices
In many situations, (excluding basic repairs) it can be a straightforward matter of replacing just the old unit with a new one – sort of a “like-for-like” basis. The old boiler will be removed and (with possibly some little adjustment of existing plumbing) the new one will be fitted into the same place as the old one.
However, this is not always the case, especially where your existing installation is many years old. You may have to consider several other factors that can definitely influence the cost of a new boiler.
Here are just a few of them:
- The new system does not need a tank and the old pipes need to be sealed up.
- Is there going to be any building work (closing flues / adding condensation pipe/ making holes / filling in holes etc.)
- Do you need extensive new plumbing / pipes for the replacement system?
- Preparing a new location for the boiler if it is to be relocated.
- Will you need new radiators (or add temperature control valves to old ones)?
- Cost of flushing the existing pipework.
- Does the cost given include removal and disposal of old boiler etc?
Power-flushing is always a good idea if you are having work done on your boiler. Cleaning out the pipes will keep your system working better as clogging, or even a blockage reduces efficiency and in turn will increase your bills.
On the subject of efficiency, all new & replacement boilers are now rated for energy efficiency with a rating of A to G. A+ or higher ratings can be found.
From 10/2010 boilers need to be 88% or more efficient in order to be installed. Typically, a new product should be between 88 to 91%.
If you look at what the Energy Savings Trust say, changing from an old G type boiler to a new A ranked condensing boiler product could knock up to £350 off your heating bill every year.
Potential savings by replacing your old boiler
|ErP Rating||Efficiency||Large house||Medium house||Small house / flat|
|D||78 – 82%||£170||£110||£100|
|E||74 – 78%||£190||£125||£105|
What type of boiler do I need?
In some cases, it will just be a matter of replacing like for like, but if your heating system has been there for a good few years, it could be that you could benefit from fitting a different type of system.
To keep it simple, there are 2 main types of water heating systems:
- With a water tank – system boilers
- Without a water tank – combi boilers
Those with a water tank are usually “regular” systems that have a water heating tank placed usually in a cupboard somewhere upstairs in the house. These types of installations are more suited to larger homes where the simultaneous demand for hot water can be high, such as homes with multiple occupants and more than one bathroom (or showers) that can be used at the same time.
Those without a water tank or “instant” water heaters usually go by the name of Combi-boilers. A lot of times the combi will be fitted in the kitchen. Suited best for situations where there are not a lot of persons using hot water at the same time.
The hot water flow may not be able to meet the demands of a large family that uses a lot of hot water at the same time.
Who to choose to install your new boiler?
Firstly a few cautionary words: Only use a certified professional HVAC engineer to install your hot water boiler. In the case of systems using gas, it would be a “Gas Safe” accredited engineer.
There are a few options as to how to go about buying and fitting a replacement boiler. You could use a local company to supply & fit, use one of the big utility companies or you could buy direct from the manufacturer and then hire another specialist to fit it.
Each way has its own advantages or disadvantages, so it’s a matter of what suits your circumstance best.
Most often local companies will have a number of clients in your area and so have a lot of experience in the types of systems used and know the best way to deal with manufacturers and suppliers.
You are also likely to find that they are competitive on pricing because of their local competitors.
The “big 6” have nationwide coverage and a very large admin backup, so you can be pretty sure that they have the products and the skilled staff to do the job at hand. They are not likely to go out of business during the job and stay in business long enough to honour any guarantees.
But there is a general consensus of opinion that the big utility companies are more expensive to deal with.
3Buy direct from manufacturer & install separately.
There is a chance that you could get a lower price for the boilers going this route, but you would need to source an engineer who is willing to install a system they did not supply.
You also have to deal with 2 sources for the warranties, and you need to sort out a service contract.