Condensing Boiler Prices & Installation Costs Guide 2024

Condensing combi boiler prices guide for 2024

A condensing boiler heats the water in your boiler by using some of the heat produced by the boiler, which would typically be released into the flue.

As a result, the boiler is much more effective and requires less energy to maintain hot water. The most popular type of condensing boiler is a gas combi boiler, but there are other types as well, including gas boilers that produce only heat.

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Condensing boilers are used in all newly manufactured gas combi and heat-only boilers which contributes to their extreme economy, and a boiler with a higher energy efficiency rating will result in lower gas prices. Check out our list of the most energy efficient boilers on the market.

Always go with a boiler that has an A or higher energy efficiency rating.

Condensing combi boiler costs without installation

Let’s look at some of the top condensing gas boilers currently available. There are many excellent manufacturers to choose from, so competition is fierce, but some are superior to others.

Your top priority should be picking the best condensing gas boiler for your house and consequently these boilers are all in compliance with Boiler Plus.

Prices for condensing combi boilers vary based on output (KW)

In any manufacturer’s product line, a particular boiler will cost more the higher the output therefore how powerful your condensing combi boiler needs to be will depend on how big your house is.

You can choose a combi boiler with a lower output, typically up to 30kw, if your house is smaller and only has one bathroom. Read our guide on the best boilers for a 2 bedroom house. You might need a combi boiler that is more powerful than 30kw if your house is bigger. We’ve put together the best 30kW combi boilers for you to choose from.

This is to make sure it is capable of keeping all the radiators in your home hot and at the same temperature while supplying hot water to your taps with good pressure.

Here are the top 5 condensing gas combi boilers we recommend, along with their installation-free prices.

Viessmann Vitodens 050 25kw Combi – £860

Atag Economiser Plus 35kw Combi – £2,359

Wocester Bosch Greenstar 8000 Life 30kw Combi – £1,190

Vaillant ecoTEC Plus Combi 25kw – £1,112

Ideal Logic+ Combi 24kw – £880

These are all boilers from the top UK boiler manufacturers at the moment but remember to always compare quotes to make sure you get the best deals on condensing combi boilers. Only the best combi boilers, system boilers, and regular boilers are sold at Green Central.

Now that nearly all new gas condensing boilers are hydrogen blend ready boilers as well, they are exempt from the ban on gas boilers in 2025. The boilers cost about the same, which is one of the best things about this.

Condensing combi boiler prices

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Condensing System Boiler Prices

Every new boiler is condensing, just like combis. Having a separate hot water tank distinguishes a system boiler from other types of boilers.

This has no bearing on whether the boiler in question is a condensing boiler or not because it is the primary device in your home that pumps water to the faucets.

For larger homes with higher hot water demands, condensing system boilers are more appropriate. They can easily supply hot water to two or three showers simultaneously without experiencing any loss of boiler water pressure.

A larger home is typically more appropriate because it requires more space to house a hot water storage tank, which they have. Consider a condensing combi boiler for better efficiency if you live in a smaller house or a larger house but need to create some space. Read our latest post on boiler efficiency to learn more.

If you already have a system boiler, it might be more economical to simply replace it with a new one rather than switching to a combi boiler. Expect to pay a fee to have all of this changed over if you want to switch to a combi. Given that most combi boilers are more cost-effective when used properly, it might be worthwhile in the long run.

The cost of condensing system boilers varies according to their power

Make sure the condensing system boiler you purchase is the appropriate size for your house. A higher output (KW) boiler is typically required for larger homes. This indicates that it can easily send hot water at the desired temperature to each radiator in your home.

You might need a system boiler with a 25kw capacity if your house is smaller. Larger homes would need an output of at least 26kw. In general, the price in each range is increased when the output is higher.

Take a look at our top 5 condensing system boilers

• Viessmann Vitodens 100-W 30kw System – £1,049
• Worcester Bosch Greenstar i 18kw System – £890
• Vaillant ecoTEC Plus 24kw System – £1,086
• Vokera Easi-Heat Plus 25kw System – £480
• Ideal Vogue Max 15kw System Boiler – £925

Read our guide for a more in-depth look into system boiler prices.

Condensing system boiler price guide

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Why pick a condensing boiler, and are the costs reasonable?

There are so many condensing boilers available that you can always find a great boiler for an excellent price. Ideal & Viessmann manufacture some of the most cost-effective boilers. Have a look at our Viessmann boiler prices guide to learn more.

They are reasonably priced, but not as good value for money as Worcester Bosch boilers. If you’re wondering about the prices for Worcester Bosch boiler, read our guide.

Condensing boilers are common in newly constructed homes in the UK. In the future, it is always a good idea to get a comparable boiler brand to compare new boiler prices, which you can do with our online calculator, which will give you fixed prices. We know that they are extremely efficient, so they meet any government guidelines regarding any carbon emissions. You might be surprised by the price of these new gas boilers, in our opinion.

What about the heating controls for condensing boilers?

For the majority of boilers, there are numerous heating controls available.

Voice recognition and heating capabilities powered by apps are two options for controlling boilers. Your home’s heating and hot water can be powered by Alexa, Google Nest & Hive, and other devices.

Along with voice and app controls, they also offer touch and electronic thermostats that make it simple to operate your new boiler and reduce your energy costs.

Now what?

Click here to get a new boiler quote online that is fixed. ✅