Back boiler replacement

back boiler replacement

If you have a back boiler, you are probably aware that you can’t replace it with another one. Replacing a back boiler with a back boiler is illegal due to its inefficiency and risk of carbon monoxide.

Back boiler replacement isn’t a quick job, it can take a couple of days to do, but the end result of a new economical combi boiler can save you plenty of money in the long run. If you need something larger due to high hot water demand or large home, then there are other condensing boilers to choose from.

How much does it cost to replace a back boiler?

The cost of replacing a back boiler is between £2,500 and £4,500 depending on which boiler you choose and where you choose to install your new boiler.

Back boiler replacement costs so much due to the fact that you have to fully remove the back boiler and install a completely different boiler elsewhere in your home. The most popular replacement is the modern combi boiler.

What are back boiler heating systems?

Back boiler heating systems are usually a fireplace in your living room or basement. These visible gas fires are linked up to your central heating system and pump hot water around your home to taps and radiators.

A back boiler heating system is very inefficient but they were very popular in the early 1960s when they were the latest innovation in heating homes. Back then they will of been the most efficient way to heat your home. Now the most efficient is a gas condensing boiler.

Are back boilers illegal?

Back boilers themselves aren’t illegal, but it is to replace a back boiler with another back boiler. You would struggle however as there are no more being manufactured and the ones that are more recently such as the Baxi Bermuda back boiler, parts are starting to become less and less available. This is also another reason to consider a new gas boiler.

Changing a back boiler to combi boiler

If your back boiler has decided to break down or you have had enough of overpaying on your gas bills, then changing your back boiler to another boiler is a cost-effective way to save you money in the long term.

Combi boilers are the most popular type of back boiler replacement due to the ease of installation and energy efficiency. A new combi boiler can save you hundreds of pounds every year due to being much more energy-efficient.

Costs involved in replacing a back boiler

As we have pointed out, replacing a back boiler isn’t cheap, but let’s take a look at what the actual costs are and what you will be paying for. Costs that we will cover are the new boiler costs, labour costs, back boiler removal costs, moving the boiler location & decommissioning, plus any extras.

Back boiler removal costs

Removing a back boiler cost between £500 and £900 depending on the type of back boiler you have. The larger the old back boiler the longer it will take to remove.

You must have your back boiler removed when you install a new boiler. This is a messy job and you will be left with an empty space where the boiler was as a new boiler can’t be installed there.

How messy is removing a back boiler

Removing a back boiler is quite a messy job. The old boiler itself will be completely ripped out, pipework will be removed and capped. A good Gas Safe registered heating engineer should keep this mess to a minimum and not leave any visible pipework.

Back boiler replacement labour costs

Labour costs for replacing a back boiler are between £1,500 and £2,000. This is down to the amount of time it takes. It can take up to 3 days to remove and replace a back boiler. This is compared to a simple combi boiler replacement that can take less than a day. Sometimes if you want the job doing quicker, it can take 2 engineers to complete the work. This would save time but not money as you would be paying for the same amount of labour.

Back boiler replacement price guide

Back Boiler Removal£500-£900
New boiler£500-£2,000
Labour costs£1,500-£2,000

Replacement combi boilers cost

A new combi boiler on its own costs between £500 and £2,000 depending on which make and model you choose. The main thing to decide upon when choosing a new combi boiler is to ensure that it is suitable for your home.

If you have a large home with high hot water demand and a large central heating system then you may want to consider a system boiler. The new boiler cost is about the same.

Replacing back boilers with a system boiler or regular boiler

If you do have a large home with high hot water demand then a combi boiler may not be the best for you. If you have a back boiler, you may already have a hot water cylinder that was used to store hot water. System boilers and regular boilers work similar so if the hot water tank is usable you could install one of these types of boilers instead.

Why change to a modern boiler?

Modern boilers are gas condensing boilers. This means that they are at least 90% efficient. The condensing part of the boiler ensures that any waste fuel is recirculated back around the condensing boiler to be used up. A modern boiler will have an energy efficiency rating of A or above. A back boiler efficiency rating would be below G, which is the lowest rating possible.

How much can you save changing from a back boiler to a gas condensing boiler?

It is estimated that if you change an old inefficient boiler to a combi boiler that you can save up to £350 per year on your energy bills. If you take the cost of the boiler installation into account at around £3,000 then you will have made your money back in around 8 years.

This may sound a long time, but consider that you may have been paying £350 extra for 8 years you could have wasted £3,000.

Full central heating and back boiler replacement cost

Back boilers are old, so your whole central heating system may also be old too. If you are replacing a back boiler then it may be a good idea to replace some of all of your central heating system.

If you are replacing your back boiler with a combi boiler, then you may want to make sure that the rest of your radiators and pipework are brought up to date too. The actual cost of replacing the full central heating system as well will depend on the size of your home.

Cost of replacing a back boiler & central heating system with 6 to 8 radiators

This type of work will cost between £4,000 and £5,000 depending on which boiler you choose and which types of radiators you want in your home. It also takes into consideration that you are just leaving the radiators where they are and replacing them with new ones. If you want to move radiators too then expect costs to be higher.

Can I keep my back boiler instead of replacing it?

Yes, if your back boiler is working perfectly fine then you can keep it. if a back boiler is looked after properly then it can be used for as long as it is working properly. The only downside is the running costs, but if you are not bothered about this then there is no real reason to change. if you want a smart thermostat, then you would need to change boilers.

Back boiler conversion to combi boiler installation Prices

If you are considering converting your back boiler to a combi boiler, then you want to ensure that you are getting the best new boiler installation deals. The cost is going to be quite high wherever you get your quotes from due to the labour costs and other costs we have mentioned but you can get some good deals. You can even spread the cost with boilers on finance.

Back boiler replacement quotes online

You can now get back boiler replacement quotes online in under a minute with companies such as Boiler Central. they have an online boiler quote calculator with the option to replace your back boiler with a combi boiler, system boiler or conventional boiler.

All the boilers you can choose are new A-rated gas boilers and include the full removal of a back boiler and new boiler installation. Get a fixed price quote with companies such as Boiler Central.

Here at New Boiler Costs, we like to compare all the best manufacturers, so if you’re looking for a certain make or model or just browsing, check out our other pages for Viessmann, Worcester Bosch, Baxi, Ideal, Vokera, Vaillant, Alpha, Potterton & more. You can always click get a quote to get recommended combi boilers, system boilers, and regular boilers suited to your home. We can even find you prices for oil boilers & electric boilers.

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