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Condensing Boiler Prices & Installation Costs Guide 2024

Condensing combi boiler prices guide for 2024

Condensing Boilers Prices Compare Boiler Quotes

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.

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

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Condensing combi boiler costs without installation

Condensing Boilers Prices Compare Boiler Quotes

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.

Condensing Boilers Prices Compare Boiler Quotes

You can choose a combi boiler with a lower output, typically up to 30kw, if your house is smaller and only has one bathroom. You might need a combi boiler that is more powerful than 30kw if your house is bigger.

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.

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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 Compare Boiler Quotes.

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

Boiler BrandBoiler ModelBoiler TypeBoiler OutputEnergy RatingBoiler Price
ViessmannVitodens 050-WCombi Boiler (Condensing)29 kWA Rated£860
ViessmannVitodens 100-WCombi Boiler (Condensing)30 kWA Rated£1,049
ViessmannVitodens 200-WCombi Boiler (Condensing)30 kWA Rated£1,226
ViessmannVitodens 050-WCombi Boiler (Condensing)35 kWA Rated£865
ViessmannVitodens 100-WCombi Boiler (Condensing)35 kWA Rated£1,108
Worcester Bosch Greenstar Junior 28iCombi Boiler (Condensing)28kwA Rated£859
Worcester Bosch Greenstar 28 CDi CompactCombi Boiler (Condensing)28kwA Rated£978
Worcester Bosch Greenstar 29 CDI ClassicCombi Boiler (Condensing)29kwA Rated£1,023
Worcester Bosch Greenstar Highflow 440 CDiCombi Boiler (Condensing)29kwA Rated£1,715
Worcester Bosch Greenstar Highflow 29 CDiCombi Boiler (Condensing)29kwA Rated£2,004
Worcester Bosch Greenstar 30SiCombi Boiler (Condensing)30kwA Rated£958
Baxi200Combi Boiler (Condensing)24 kWA Rated£633
Baxi100Combi Boiler (Condensing)24 kWA Rated£689
Baxi600Combi Boiler (Condensing)24 kWA Rated£711
VaillantecoTEC plusCombi Boiler (Condensing)25 kWA Rated£1112
VaillantecoTEC ProCombi Boiler (Condensing)28 kWA Rated£880
VaillantecoTEC ProCombi Boiler (Condensing)28 kWA Rated£1402
VaillantecoFIT PureCombi Boiler (Condensing)30 kWA Rated£1001
IdealLogic MaxCombi Boiler (Condensing)24 kWA Rated£880
IdealLogic+Combi Boiler (Condensing)24 kWA Rated£880
IdealVogueCombi Boiler (Condensing)26 kWA Rated£950
IdealLogic Code ESCombi Boiler (Condensing)26 kWA Rated£1,005
IdealVogue MaxCombi Boiler (Condensing)26 kWA Rated£1,119
PottertonHeatmax HECombi Boiler (Condensing)24 kWA Rated£720
PottertonPromax HE Plus ACombi Boiler (Condensing)24 kWA Rated£775
PottertonTitaniumCombi Boiler (Condensing)24 kWA Rated£808
PottertonPromax UltraCombi Boiler (Condensing)24 kWA Rated£963
PottertonAssureCombi Boiler (Condensing)25 kWA Rated£833
VokeraEasi-Heat Plus 32CCombi Boiler (Condensing)32 KWA Rated£550.00
VokeraEasi-Heat Plus 25CiCombi Boiler (Condensing)25 KWA Rated£449.00
VokeraUnica i32Combi Boiler (Condensing)32 KWA Rated£799.99

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.

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.

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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

Condensing system boiler price guide

Boiler BrandBoiler ModelBoiler TypeOutputEnergy RatingBoiler Price
ViessmannVitodens 100-WSystem Boiler (condensing)26 kWA Rated£1,015
ViessmannVitodens 100-WSystem Boiler (condensing)19 kWA Rated£1,046
ViessmannVitodens 100-WSystem Boiler (condensing)30 kWA Rated£1,049
ViessmannVitodens 100-WSystem Boiler (condensing)35 kWA Rated£1,099
ViessmannVitodens 200-WSystem Boiler (condensing)19 kWA Rated£1,195
ViessmannVitodens 200-WSystem Boiler (condensing)26 kWA Rated£1,298
Worcester BoschGreenstar 12iSystem Boiler (condensing)12kWA Rated£825
Worcester BoschGreenstar 15iSystem Boiler (condensing)15kWA Rated£855
Worcester BoschGreenstar 18iSystem Boiler (condensing)18kWA Rated£890
Worcester BoschGreenstar 8000 LifeSystem Boiler (condensing)30kWA Rated£1,189
Worcester BoschGreenstar 8000 LifeSystem Boiler (condensing)35kWA Rated£1,362
Worcester BoschGreenstar 8000 StyleSystem Boiler (condensing)30kWA Rated£1,323
Worcester BoschGreenstar 8000 StyleSystem Boiler (condensing)35kWA Rated£1,405
VaillantecoFIT PureSystem Boiler (condensing)25 kWA Rated£1059
VaillantecoTEC Plus 624System Boiler (condensing)24 kWA Rated£1086
VaillantecoFIT PureSystem Boiler (condensing)30 kWA Rated£1164
VaillantecoTEC Plus 630System Boiler (condensing)30 kWA Rated£1190
IdealLogic+ SystemSystem Boiler (condensing)15 kWA Rated£790
IdealLogic Max SystemSystem Boiler (condensing)15 kWA Rated£875
IdealVogue SystemSystem Boiler (condensing)15 kWA Rated£910
IdealVogue Max SystemSystem Boiler (condensing)15 kWA Rated£925
BaxiMegaflo Compact GASystem Boiler (condensing)12 kWA Rated£640
BaxiMegaflo HE ASystem Boiler (condensing)15 kWA Rated£669
BaxiEcoBlueSystem Boiler (condensing)18 kWA Rated£993
BaxiEcoBlueSystem Boiler (condensing)24 kWA Rated£1,055

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.

They are reasonably priced, but not as good value for money as Worcester Bosch boilers, you’re probably wondering.

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.

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