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How Long Does A Combi Boiler Installation Take


A combination (or combi) boiler is a high-efficiency water heater and a central heating system. In comparison to other central heating systems, the combi boiler is not only a multi-purpose unit, but it is also compact. This eliminates a separate water tank to heat your home and deliver hot water. Over the last few years, the popularity of these boilers has grown, with more than 70% of UK households preferring a combi boiler over a regular hot water, or system, boiler.

Combination boilers (also known as Combi boilers) are the most common type of heating device in UK households, supplying hot water to taps, showers, and central heating radiators. The popularity of combi boilers can be attributed to several factors; here are our top five.

  1. On-demand hot water: The Combi boiler is immediately connected to your mains water supply and heats the water. When you turn on a hot tap or turn on the heat, water runs through the boiler and heats the boiler’s built-in heating element. This eliminates the need to stockpile hot water because it is available whenever needed!
  2. Space-saving: Your heating system will take up less space because you won’t need extra heavy equipment like a hot water cylinder or cold tanks.
  3. Small size: Most modern Combi boilers were designed with space as a top priority. Most are designed to fit neatly out of sight in cabinet spacing (many manufacturers specifically design “Compact” models).
  4. Efficiencies: Today, nearly every Combi boiler is designed to satisfy the most outstanding efficiency standards. Moving from a G-rated to an A-rated Combi boiler can save you up to £305 per year on your heating bill, proving that being efficient can pay off!
  5. Excellent value: Combination boilers can be purchased for a reasonable price, and the fact that no additional extras (such as a tank or cylinder) are required reduces installation costs significantly.

How long does a new combi boiler take to install?

The installation of a new combi boiler takes 1-2 days. Lifting carpets, flooring, floorboards, laying pipework, and installing radiators will significantly increase the time required (1–2 weeks).

The time it takes to install a new boiler varies based on several factors, including the type of boiler you already have and the size of your home, whether you want to relocate your boiler, and whether any additional work is required as installing all-new pipes.

In this guide, we’ll look at how these factors can affect how long it takes to install a new boiler and how much it costs, but first, let’s look at what a general boiler installation involves.

These are the most modern, well-equipped boilers available in the UK. Combi boilers have much shorter installation times on average.

Compared to the longer installation timeframes for more “traditional” conventional boilers, a combi boiler can normally be installed in 4–6 hours. However, keep in mind that this shorter installation is usually only available if you are replacing an existing combi boiler and want it installed in the same location.

The installation will take longer if you’re getting a combi installed but already have an older boiler, such as a traditional back boiler.

If you want to change the location of the boiler, such as moving it to another room, the installation will take longer.

When it comes to boiler installation, location is essential, so let’s go over it.

How much time does it take to relocate a boiler?

If you want to keep the boiler in the same location, the installation will almost always be faster, unless the engineer experiences an unexpected problem. However, determining how long it will take to install or relocate a boiler will be more time-consuming. Moving a boiler to a new location usually necessitates the engineer changing the existing pipework and possibly installing new pipes as well.

The length of time required will, once again, vary depending on where you want the boiler relocated. However, on average, you can expect it to add half a day to a full day to your boiler installation.

How much time does it take to remove and replace a boiler?

Because removing the old boiler does not take long, boiler replacement includes both removal and installation. The majority of boilers are simply hung on a wall with a large bracket that can support the weight of the required boiler. All brackets are included with a boiler, so if you remove a boiler and the brackets, you will receive a new one with your replacement boiler.

Once the old boiler has been removed, the rest of the job will be installing the new one, which, as previously stated, can take 1-2 days, depending on the work involved.

What is the average time it takes to upgrade a boiler?

Finally, whether you’re getting a system upgrade might impact how long it takes to install it. Don’t be concerned if you’ve never heard of a system upgrade. It essentially means that you’re switching boiler types.

Although we have already discussed combi boilers, you can still expect the standard two-day installation time if you have an older conventional boiler and have a new combi boiler installed. Installation may take even longer if you already have a combi boiler and replace it with a traditional boiler.

In some cases, installation can take 3 – 4 days.

How long does it take to install a combi boiler?

If it’s a combi swap, you’ll be able to control your heating and room temperature with your phone or tablet within a few hours. However, a bigger job may take longer depending on your current boiler system. 

Is a Combination Boiler Right for You?

The disadvantages listed may not apply to you depending on the type of system you currently have and your current fixtures. The best way to find out is to contact our professionals as soon as possible to see if we have a combi boiler that will work with your home. Our call centre is open 24 hours a day, 7 days a week, which means we are available to you whenever you need us!

These small appliances are popular in smaller homes with limited space, but they can also be used to make a larger one more efficient. Our prices are just as reasonable (if not better) than our products, so look at what we offer.

We will have the right product for you with our selection of gas systems, gas heat, and LPG (liquefied petroleum gas) boilers. If you’re unsure which one is best for you, feel free to browse our selection and read reviews to get a better idea. Otherwise, please contact our customer service representatives, who are always available at your convenience.

Contact us: 0800 0314395

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