Combi Boiler Quotes

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Learn more about combination boiler models
An efficient combi boiler could save you money on your energy bills
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Combi Boilers

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Get the best quotes on combi boilers from Compare Companies and our network of qualified and experienced installers. We arrange for quotes to be given in person once you’ve had a chance to explain what you want and the installer can see what the situation is. This helps ensure a transparent and competitive price. Try our free, no-obligation service now to find out more about the options for combination boilers.

Learn more about combi boilers, and why they’re a popular choice for many properties.

What is a Combi Boiler?

Combi boilers, or combination boilers, are the most popular type of boiler in the UK. They heat water up on demand, so there’s no need for storage tanks. This reduces the amount of space that your boiler needs, and they have outputs that suit most houses and needs.

Depending on the make and model of the combination boiler you choose, they cost from as little as £500 to buy. This makes them a great option for anyone working to a budget.

woman looking closely at a boiler
Silver boiler

Why Choose A Combi Boiler?

A combi boiler is an efficient option for many houses across the UK. They are efficient and only heat water when you need it, so you’re not spending money at times when no one is home or when hot water isn’t required.

Other reasons to choose a combination boiler include:

They are compact and can be installed in more places than before
Not requiring a water tank that takes up extra space
Being ideally suited for smaller properties
Combi boiler prices and installation costs are lower than with other systems

How Much Does Installing A Combination Boiler Cost?

Combi boiler installation is more than just the type of boiler you choose. Other factors need to be considered, such as pipes, location, and more. Any quote should be broken down into what exactly you’re paying for, so you can make sure you’re getting exactly what you want.

After speaking to our suppliers and installers, we’ll be able to provide an estimate on the figures you can expect to pay for a new combi boiler to be installed:

On Your Quote

 Price Range

The cost of your boiler


Boiler installation cost


Cost of moving pipes


Mechanical flush before installation




The range between the highest and lowest prices can be a lot, showing why combination boilers are a great option for many people.

Most homeowners will find a combi boiler to be the best option, which can cost between £625 and £1,250, so you should expect to pay no more than £1,885 to £2,500 when you factor in installation charges.

Mechanical flushes aren’t always needed – only when replacing an old boiler system. That means, for a lot of installations, you won’t need to budget £440 to £535 for that service.

Picking A Combination Boiler

With so many combi boiler brands and models to choose from, it’s essential that you pick the right one. You should think about the space the boiler is in, what size the new boiler will be, its power, and much more.

Here are some of the things to consider:

Dimensions – the height, width, and depth of your boiler. Your installer will probably recommend a boiler that’s exactly the same or very close in size if it’s going in the same place as the old one. If the boiler is moving elsewhere in your home, be sure to tell the installer where you want it to go so that they can recommend the right model.
Flow rate – this lets you know how many litres of water your boiler can handle every minute. The more taps you have around the home, the higher the flow rate you’ll want.
Output – connected to the flow rate, the output is measured in kilowatts (kW). To make sure you always have hot water when needed, you’ll want a boiler that can easily heat up water for your whole household.
Energy efficiency rating – boiler technology has become very energy efficient in recent years. The more energy efficient your boiler, the lower your gas bills. A-rated boilers will bring the biggest savings, but even B-rated boilers can be worth considering.

The best combi boiler for you depends on the heating system in your home, how much usage it will see, and other factors. There are different sizes that work for different levels of use and property size, such as:

Small properties with up to 10 radiators and 1 bathroom – a 24kW-27kW output boiler.
Medium properties with up to 15 radiators and 2 bathrooms – a 28-34kW output boiler.
Large properties with up to 20 radiators and 2 or more bathrooms – a boiler with an output greater than 35kW.

When deciding on which combination boiler to choose, think about what your home needs and how much use it will see. Spending too much on a boiler that you don’t use properly will reduce the savings you can make, while a model that’s too small will soon strain to keep up with the demand.

Get The Best Combi Boilers Quotes

New combi boilers are important, and the price can be a determining factor in which one you choose. We work with vetted and qualified installers so you can be sure of the best advice and options for your new combi boiler. Contact our team at Compare Companies now through the form and we’ll arrange appointments with gas safe certified engineers who can provide quotes on the best combi boiler quotes for you.

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