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How long does it typically take to fit a new boiler?

If you’ve been wanting to upgrade or change your boiler's type, location or fuel but didn’t know how much work & time goes into it, then this guide will help answer the many questions you may have. 

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Same boiler type in the same position: 6 - 10 hours

When you're upgrading the same type of boiler from an old inefficient one to a new & more energy-efficient model this is what's known as a “straight swap” in the industry. You'll often get this installation when your central heating is working well but your boiler is either broken or too old and needs to be upgraded. 

They are one of the quickest boiler installations we can offer. This can be done by one engineer in less than a day, taking 6 to 10 hours on average to complete.


Move the location of your boiler: 1–2 days

If you’re happy with your current boiler but think it’s in a location that’s not so great, you can always choose to move the boiler to a more suitable area.

This isn't an easy job and requires new pipework to be installed, electric power & thermostat cables to be connected and a small amount of structural work may be necessary to create space for the flue and overflow. 

This will usually be completed by one engineer within 2 days.

Upgrade to a brand new combi boiler from only £1,549!

According to figures by the Energy Saving Trust, Switching to a brand new combi boiler from an old fashioned non-condensing boiler could save you as much as £340 a year on your gas bill.

And at Boiler Plan, you can get a brand-new combi boiler from only £1,549!

With finance options available, enjoy the peace of mind that comes with a brand-new energy efficient boiler.

Just a few clicks and you could be getting:

  • Lower Energy Bills
  • Up to 10 years Manufacturer Warranty
  • A Free Smart Thermostat
  • Flue Kit worth £100 rrp
  • Magnetic Filter worth up to £100 rrp
Get a fixed price quote today

Installing a brand new combi boiler: 1–2 days

If you’re moving into a brand new home without heating & hot water and want a brand new combi boiler installed, it's likely going to take the same amount of time as moving the location of a boiler - as the work involved is very similar. It should take an engineer 2 days to complete. 

If you're moving to a new home that doesn't have any central heating, then that will increase the workload significantly. It could take anywhere between 1-2 weeks for a gas safe engineer, as it involves lifting carpets & flooring, laying pipework and installing radiators.

Changing to a combi boiler: 2-3 days

If you’ve been thinking about converting your current boiler to a combi, this will likely take an engineer 2 -3 days. This is mostly due to dismantling & safely removing old boiler parts and components, such as a cold water storage tank or heating cylinder. 

The quickest part of the conversion is removing the old boiler and swapping it out for a new energy-efficient combi. 

The above time frame is only if you want the boiler in the same place, if you also want to change the location that will likely take 3 – 4 days instead.

Changing fuel type: 2 – 3 days

If you’re installing a new boiler but also want to change your current fuel type to gas, oil or electric, it will likely take 2-3 days due to the amount of extra plumbing and electrical work involved.