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Great Home

Independent Advice On Improving Your Home

Gas Combi Boilers with Pricing

Combination boilers, also known as combi boilers, heat hot water as you need it.

Main Features Of A Combination Boiler

FeatureBenefitDisadvantage
Does not need a hot water cylinder.Less space required. Lower overall installation cost. May need to oversize boiler to keep up with hot water demand rather than space heating demand.

The system uses mains water pressure.
No tanks in the loft to freeze in cold weather.

Water pressure is forceful for showers and taps.
If switching from a gravity system some taps may need to be replaced. 
Particularly suited for flats and small houses where there is only one bathroom/shower room.Ideal where hot water needs are limited.

Other Considerations When Choosing A New Combination Boiler

As water is heated as you use it, the flow of hot water is slower than for a system that provides stored hot water. It is unlikely to cope with two people showering in different bathrooms, especially in the winter.
The choice of power output of a combination the boiler is driven by the hot water requirements rather than the central heating needs. To have a reasonable level of hot water flow the boiler output has to be in a range of 24kW-30kW rather than 15-20kW for a system with a hot water storage tank.

Combination Boiler Pricing

Below we list pricing for the popular combi boiler options by power output in kW and then brand. Note that the prices are for the boiler only and do not include the flue. They are also typical prices and do not reflect any price promotions with a specific plumbers merchant or retailer. On occasions, manufacturers offer promotional packages which include the flue.

See also prices for: Heat Only Boilers and System Boilers.

If you want an indication of what you may pay for a boiler replacement including installation then use our replacement boiler cost online calculator. You can then compare any quotations from installers with this guideline estimate.

<
Power
Output
ProductTypical price
inc VAT
Warranty
Period
Years *
Technical
Details
24kWBaxi EcoBlue Advance Combi 24£1,003.1010View
24kWBaxi Platinum Combi 24£885.4110View
24kWBaxi Duo-tec Combi 24£753.107View
24kWBaxi 600 Combi 24£782.317View
24kWBaxi 200 Combi 24£650.433View
24kWBaxi 400 Combi 24£686.665View
24kWGlow-worm Betacom4 24kW Combination£498.755View
24kWIdeal Logic Max Combi C24£931.2910View
24kWIdeal Logic+ Combi C24£810.137View
24kWPotterton Gold 24 Combi£680.652View
24kWPotterton Titanium 24 Combi£799.507View
24kWPotterton Promax 24 Combi£859.942View
24kWVaillant ecoTEC pro 24 combi£961.462View
25kWGlow-worm Energy 25kW Combination£801.857View
25kWVaillant ecoTEC plus 825 combi£1,138.405View
25kWVaillant ecoFIT pure 825 combi£901.852View
25kWWorcester Bosch Greenstar 25si Compact £1,079.945View
25kWWorcester Bosch Greenstar 25i £975.045View
26kWIdeal Vogue Max Combi C26£1,225.0010View
26kWIdeal Vogue Gen2 Combi C26£1,098.138View
28kWBaxi 200 Combi 28£648.403View
28kWBaxi 400 Combi 28£724.915View
28kWBaxi Duo-tec Combi 28£876.047View
28kWBaxi Platinum Combi 28£1,038.5410View
28kWBaxi EcoBlue Advance Combi 28£1,149.0610View
28kWPotterton Promax 28 Combi£929.362View
28kWPotterton Titanium 28 Combi£864.507View
28kWPotterton Gold 28 Combi£754.302View
28kWVaillant ecoTEC pro 28 combi£1,059.092View
28kWWorcester Bosch Greenstar 28CDi Compact£1,153.995View
29kWWorcester Bosch Greenstar CDi Highflow 440CDi£2,186.845View
29kWWorcester Bosch Greenstar 29CDi Classic£1,192.985View
30kWBaxi 600 Combi 30£852.487View
30kWGlow-worm Ultimate 3 30kW Combination£711.515View
30kWGlow-worm Betacom4 30kW Combination£584.585View
30kWGlow-worm Energy 30kW Combination£901.937View
30kWIdeal Logic Max Combi C30£1,021.9110View
30kWIdeal Logic+ Combi C30£867.667View
30kWVaillant ecoTEC pro 30 combi£1,146.882View
30kWVaillant ecoFIT pure 830 combi£1,004.502View
30kWWorcester Bosch Greenstar 30si Compact £1,210.605View
30kWWorcester Bosch Greenstar 30i £1,105.785View
30kWWorcester Bosch Greenstar CDi Highflow 550CDi£2,755.355View
32kWIdeal Vogue Max Combi C32£1,201.0810View
32kWIdeal Vogue Gen2 Combi C32£1,220.938View
32kWVaillant ecoTEC plus 832 combi£1,254.805View
32kWWorcester Bosch Greenstar 32CDi Compact£1,280.985View
33kWBaxi Platinum Combi 33£1,107.5910View
33kWBaxi Duo-tec Combi 33£1,003.107View
33kWBaxi EcoBlue Advance Combi 33£1,271.9810View
33kWPotterton Promax 33 Combi£1,077.652View
33kWPotterton Titanium 33 Combi£929.507View
33kWPotterton Gold 33 Combi£827.952View
34kWWorcester Bosch Greenstar 34CDi Classic£1,327.215View
35kWGlow-worm Ultimate 3 35kW Combination£776.415View
35kWGlow-worm Energy 35 Store Combination£1,732.867View
35kWGlow-worm Energy 35kW Combination£1,024.257View
35kWIdeal Logic Max Combi C35£1,144.8610View
35kWIdeal Logic+ Combi C35£1,033.547View
35kWVaillant ecoFIT pure 835 combi£1,140.962View
35kWVaillant ecoTEC plus 835 combi£1,332.885View
35kWVaillant ecoTEC 835 exclusive combi boiler£1,648.215View
36kWBaxi 600 Combi 36£1,068.047View
36kWWorcester Bosch Greenstar 36CDi Compact£1,403.695View
38kWVaillant ecoTEC Plus 938 combination store£1,622.912View
38kWVaillant ecoTEC plus 838 combi£1,435.415View
38kWWorcester Bosch Greenstar 38CDi Classic£1,489.605View
40kWBaxi EcoBlue Advance Combi 40£1,348.9410View
40kWBaxi Platinum Combi 40£1,292.4910View
40kWBaxi Duo-tec Combi 40£1,058.317View
40kWIdeal Vogue Gen2 Combi C40£1,346.438View
40kWIdeal Vogue Max Combi C40£1,334.4110View
40kWPotterton Titanium 40 Combi£1,007.507View
42kWWorcester Bosch Greenstar 42CDi Classic£1,773.485View
43kWVaillant ecoTEC 843 exclusive combi boiler£1,991.885View

* subject to specific terms and conditions.

 

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Jon Davies

Hi I'm Jon. This website seeks to help those searching for the basics about improving their home. It offers an independent view, trying to balance the interests of … read more

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