How long does it take to fit a new boiler?

install timescales

One of the most common questions people have about new boilers is how long they will take to fit. Indeed, it’s the most common question after new boiler costs.

The problem is answering how long it takes to fit a new boiler can be a very difficult question to answer!

boiler replacement

Yes, this isn’t the answer most people will want to hear, but boilers are often quite complicated, and not everything is simple (just like life really).

Get an online fixed price in 20 seconds:

Q What kind of fuel does your boiler use?

What you need to know about fitting a new boiler?

It’s important to note that fitting a new boiler isn’t always a simple like-for-like swap. In certain cases, you may need to move your boiler, upgrade to a new system or change from an outdated boiler to a new combi. For this reason, the time it will take is dependent on your circumstances. That said, this guide will touch on the average installation times and what you can expect at minimum.

The fastest boiler installation is what’s called a ‘like for like swap’.

Simply, this refers to those who need to replace their current boiler with the same type of boiler. Be sure that this doesn’t mean the same brand, simply the same type of technology.

So, if you have an older combi boiler which needs replacing with a new modern combi boiler in the same location, you are in luck.

A like-for-like swap usually takes a Gas Safe heating engineer a day.

gas safe installer

If everything goes to plan without any issues occurring, it should take up to 6 hours at the most to fit your new central heating system.

How long does it take to replace a boiler

The common answer is usually 1 to 2 days for moving a boiler or to replace a boiler.

But this answer will vary depending on what work is needed, if your boiler is moving location or if you have a like-for-like boiler.

gas engineer

You won’t typically see one replaced in less than a day. While that seems like a lot of time, it’s because boilers are complicated machines and there is a lot of variation when it comes to boiler types.

Sometimes you may need extra pipework relocating or a boiler flue relocation and all of these jobs are not quick fixes. 

If your boiler was previously leaking water, then you may need some work to repair flooring or areas that water may have dripped on to. 

Boilers such as the Megaflo unvented range takes longer to install as many of these installations are new installs. These can take 1 to 3 days dependent on the size of the boiler and home. 

Basically, it will often take quite a while however, if you have a combi boiler, then you will benefit from a much shorter installation time.

So, let’s change the question for a moment how long does it take to fit a new boiler if it’s a combi unit?

How long does it take to install a new combi boiler?

Combi boilers or combination boilers to give them their full name are a hybrid appliance that operates as both a central heating unit and a high-efficiency water heater.

These are the most fitted, modern boilers throughout the UK. Combi boilers benefit from much shorter installations on average.

boiler brands

A combi boiler can usually be installed within 4 – 6 hours, which is good news, especially when compared to the on average longer installations for more “traditional” conventional boilers.

However, remember you can only usually benefit from this shorter installation if you are swapping a pre-existing combi boiler and want it installed in the same place. Find out what a conventional boiler is here. 

If you are getting a combi installed but currently have an older boiler, such as a traditional back boiler, then installation will take longer.

If you want the location of the boiler moving such as moving the boiler to another room then installation will again take more time.

The location is very important when it comes to boiler installation so let’s take a more detailed look at it.

How long does it take to move a boiler?
boiler installation process

When considering how long it will take to move a new boiler, the location will be very important to any engineers or surveyors estimate.

If you want the boiler to be kept in the same location, then installation will almost always be quicker, unless the engineer runs into an unexpected problem that is.

However, how long to install or move a boiler will be a much longer job.

Moving a boiler to a new location will usually require the engineer to change the existing pipework and maybe even install new pipes as well.

This as I am sure you can guess, will add some extra time to your boiler installation.

How much longer this will take can once again can vary quite considerably depending on where you want the boiler moving to.

But on average you can expect it to add half a day to a full day of extra-time to your boiler installation.

Get an online fixed price in 20 seconds:

Q What kind of fuel does your boiler use?

How long does it take to upgrade a boiler?
a rated boiler replacement

Finally, the other main thing that can impact your installation timeframe is whether you are getting a system upgrade or not.

If you’ve never heard the term system upgrade before then don’t worry. It basically means you are changing the type of boiler.

We already talked about combi boilers earlier but if you have an older conventional boiler and are getting a new combi boiler installed you can still expect the standard 2 days for installation.

However, if you already have a combi boiler and are replacing it with a conventional boiler then installation could take even longer.

Installation can take around 3 – 4 days in some cases.

combi boiler how long to install

So within a few hours, you can be controlling your heating and room temperature with your phone or tablet if it is a combi swap. But if it’s a bigger job, it could be longer depending on your current boiler system.

Get an online fixed price in 20 seconds:

Q What kind of fuel does your boiler use?

Summary on boiler installation times:

There are many different answers to the question of how long does it take to install a boiler. In most cases, you can expect around 1 day on average. At most, it usually takes 2 days.

If you are doing the like-for-like and swapping a combi boiler for another combi unit, you can expect your installation to be quick, often within a few hours.

Another commonly asked question is, how long does it take to service a boiler? Services should happen annually to keep your warranty valid and usually takes around 1 to 2 hours.

If you are looking for a new boiler, get a fixed boiler price online now.

For a quote in 20 seconds – click here.

You can even purchase your boiler online and choose your own installation date from our live calendar.

You can pay securely by card or even apply for boiler finance for £17 per month within minutes.

Get an online fixed price in 20 seconds:

Q What kind of fuel does your boiler use?

Get a great price on a Which? Best Buy boiler online in minutes

Pick your install date | £0 Deposits | 0% Interest-FREE
** 12-Year Warranty on selected Worcester Bosch & ViessmannGet a Quote Now >