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Best Gas Combi Boilers

Best Gas Combi Boilers

The best gas combi boilers on the market


1. Vaillant ecoTEC Plus 825

Our score rating: 93.35%

Efficiency rating
94%
Band rating
A
Output in kW
25.4 kW
Height
720 mm
Width
440 mm
Depth
338 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,300

2. Vaillant ecoTEC Plus 832

Our score rating: 92.98%

Efficiency rating
94%
Band rating
A
Output in kW
31.8 kW
Height
720 mm
Width
440 mm
Depth
338 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,300

3. Worcester Bosch Greenstar 2000 25kW

Our score rating: 92.89%

Efficiency rating
93%
Band rating
A
Output in kW
25 kW
Height
724 mm
Width
400 mm
Depth
300 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £1,800

4. Viessmann Vitodens 050-W 29kW

Our score rating: 92.66%

Efficiency rating
93%
Band rating
A
Output in kW
29 kW
Height
707 mm
Width
400 mm
Depth
350 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £1,800

5. Vaillant ecoTEC Plus 835

Our score rating: 92.60%

Efficiency rating
94%
Band rating
A
Output in kW
35 kW
Height
720 mm
Width
440 mm
Depth
372 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,400

6. Worcester Bosch Greenstar CDi Compact 28

Our score rating: 92.57%

Efficiency rating
90.5%
Band rating
A
Output in kW
28 kW
Height
680 mm
Width
390 mm
Depth
280 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,000

7. Vaillant ecoFIT Pure 825

Our score rating: 92.39%

Efficiency rating
94%
Band rating
A
Output in kW
25 kW
Height
700 mm
Width
390 mm
Depth
295 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,000

8. Vaillant ecoTEC Plus 838

Our score rating: 92.16%

Efficiency rating
94%
Band rating
A
Output in kW
38.7 kW
Height
720 mm
Width
440 mm
Depth
406 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,500

9. Vaillant ecoTEC Exclusive IQ 835

Our score rating: 91.90%

Efficiency rating
94%
Band rating
A
Output in kW
35 kW
Height
720 mm
Width
440 mm
Depth
406 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,600

10. Vaillant ecoTEC Pro 24

Our score rating: 91.77%

Efficiency rating
94%
Band rating
A
Output in kW
23.4 kW
Height
720 mm
Width
440 mm
Depth
338 mm
Mounting
Wall
Fuel
Gas
ERP Rating
A

Supply and installation around £2,000

Other gas combi boilers to consider

Range and model Rating Estimated price
Worcester Bosch Greenstar Si Compact 25Si 91.77% £2,100
Worcester Bosch Greenstar 8000 Life 30kW 91.66% £2,200
Worcester Bosch Greenstar CDi Compact 32 91.56% £2,100
Worcester Bosch Greenstar 2000 30kW 91.55% £1,900
Worcester Bosch Greenstar i 25i 91.48% £2,100
Vaillant ecoTEC Plus 938 91.46% £2,700
Worcester Bosch Greenstar 4000 25kW 91.41% £2,100
Viessmann Vitodens 050-W 35kW 91.23% £1,900
Worcester Bosch Greenstar 8000 Style 30kW 91.18% £2,300
Vaillant ecoFIT Pure 830 91.05% £2,100
Worcester Bosch Greenstar Si Compact 25Si
PP Score 91.77% Est price

£2,100

Worcester Bosch Greenstar 8000 Life 30kW
PP Score 91.66% Est price

£2,200

Worcester Bosch Greenstar CDi Compact 32
PP Score 91.56% Est price

£2,100

Worcester Bosch Greenstar 2000 30kW
PP Score 91.55% Est price

£1,900

Worcester Bosch Greenstar i 25i
PP Score 91.48% Est price

£2,100

Vaillant ecoTEC Plus 938
PP Score 91.46% Est price

£2,700

Worcester Bosch Greenstar 4000 25kW
PP Score 91.41% Est price

£2,100

Viessmann Vitodens 050-W 35kW
PP Score 91.23% Est price

£1,900

Worcester Bosch Greenstar 8000 Style 30kW
PP Score 91.18% Est price

£2,300

Vaillant ecoFIT Pure 830
PP Score 91.05% Est price

£2,100

Newsletter

Stay in touch with Plumbproud for the latest news, reviews, and special offers on keeping your home warm and cosy


    Bob Maine
    Bob Maine
    2021-09-29
    New bathroom installation over two years ago. Had some some issues but all resolved.Warranty extended one year and a repair was made even after warranty expired.
    KELLY HENDERSON
    KELLY HENDERSON
    2021-09-14
    I'm more than happy with the service received from PlumbProud. Right from the moment I enquired online about the cost of a new boiler, the service has been thorough. I received a call very soon after my enquiry and organised a next day visit. The representative was friendly and understood what i needed in terms of boiler size etc. He also talked me through the finance options available. Installation took a day and I was extremely impressed by the standard of work and professionalism of the two young men. They worked efficiently, politely and tidily to take out a monster of an old boiler and fit the new one in it's place. They took the boiler with them at my request leaving only the box for me to put with the recycling. The office staff are polite and friendly - working to get all the paperwork done and see to any modifications needed. Im very happy to recommend this company.
    Sue Priestley
    Sue Priestley
    2021-09-09
    Helpful professional , oil boiler fitted pleasant friendly professional team ,
    Ray Brady
    Ray Brady
    2021-09-03
    From start to finish , no pressure to buy , Nick from the survey ,Gemma in the office , Oleg on the install . Professional , helpful , easy to deal with , both the lads were dog friendly . Oleg , very neat and tidy , can't complain . Plumbproud were not the cheapest , not the dearest either , they were extremely helpful from the off and they kept the appointments , which is why i went with them .
    Franki Williams
    Franki Williams
    2021-08-28
    Benny Wood
    Benny Wood
    2021-08-26
    Anthony W
    Anthony W
    2021-08-25
    Great job thanks for your help plumbproud
    Jill Willis
    Jill Willis
    2021-08-18
    Super fast service Ian came to survey and price up on Wednesday really good price for boiler, installation was the very next day what more could you ask for, the lads that installed the boiler we’re very professional. I can’t praise plumbproud enough I highly recommend them.
    lynn newton
    lynn newton
    2021-08-12
    Kevin Peach
    Kevin Peach
    2021-07-30
    Excellent service from the survey engineer to the engineer who fitted the Boiler , and to the fitter who done the magna cleanse for us .A first class job ,by professional people . The office staff were very polite , and the whole job ran smoothly .


    Combi boilers

    Choose from the UK’s biggest range of combis

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    The best gas combi boilers on the market

    1. Vaillant ecoTEC Plus 825

    Our score rating: 93.35%

    Efficiency rating
    94%
    Band rating
    A
    Output in kW
    25.4 kW
    Height
    720 mm
    Width
    440 mm
    Depth
    338 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,300

    2. Vaillant ecoTEC Plus 832

    Our score rating: 92.98%

    Efficiency rating
    94%
    Band rating
    A
    Output in kW
    31.8 kW
    Height
    720 mm
    Width
    440 mm
    Depth
    338 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,300

    3. Worcester Bosch Greenstar 2000 25kW

    Our score rating: 92.89%

    Efficiency rating
    93%
    Band rating
    A
    Output in kW
    25 kW
    Height
    724 mm
    Width
    400 mm
    Depth
    300 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £1,800

    4. Viessmann Vitodens 050-W 29kW

    Our score rating: 92.66%

    Efficiency rating
    93%
    Band rating
    A
    Output in kW
    29 kW
    Height
    707 mm
    Width
    400 mm
    Depth
    350 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £1,800

    5. Vaillant ecoTEC Plus 835

    Our score rating: 92.60%

    Efficiency rating
    94%
    Band rating
    A
    Output in kW
    35 kW
    Height
    720 mm
    Width
    440 mm
    Depth
    372 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,400

    6. Worcester Bosch Greenstar CDi Compact 28

    Our score rating: 92.57%

    Efficiency rating
    90.5%
    Band rating
    A
    Output in kW
    28 kW
    Height
    680 mm
    Width
    390 mm
    Depth
    280 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,000

    7. Vaillant ecoFIT Pure 825

    Our score rating: 92.39%

    Efficiency rating
    94%
    Band rating
    A
    Output in kW
    25 kW
    Height
    700 mm
    Width
    390 mm
    Depth
    295 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,000

    8. Vaillant ecoTEC Plus 838

    Our score rating: 92.16%

    Efficiency rating
    94%
    Band rating
    A
    Output in kW
    38.7 kW
    Height
    720 mm
    Width
    440 mm
    Depth
    406 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,500

    9. Vaillant ecoTEC Exclusive IQ 835

    Our score rating: 91.90%

    Efficiency rating
    94%
    Band rating
    A
    Output in kW
    35 kW
    Height
    720 mm
    Width
    440 mm
    Depth
    406 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,600

    10. Vaillant ecoTEC Pro 24

    Our score rating: 91.77%

    Efficiency rating
    94%
    Band rating
    A
    Output in kW
    23.4 kW
    Height
    720 mm
    Width
    440 mm
    Depth
    338 mm
    Mounting
    Wall
    Fuel
    Gas
    ERP Rating
    A

    Supply and installation around £2,000

    Other gas combi boilers to consider

    Range and model Rating Estimated price
    Worcester Bosch Greenstar Si Compact 25Si 91.77% £2,100
    Worcester Bosch Greenstar 8000 Life 30kW 91.66% £2,200
    Worcester Bosch Greenstar CDi Compact 32 91.56% £2,100
    Worcester Bosch Greenstar 2000 30kW 91.55% £1,900
    Worcester Bosch Greenstar i 25i 91.48% £2,100
    Vaillant ecoTEC Plus 938 91.46% £2,700
    Worcester Bosch Greenstar 4000 25kW 91.41% £2,100
    Viessmann Vitodens 050-W 35kW 91.23% £1,900
    Worcester Bosch Greenstar 8000 Style 30kW 91.18% £2,300
    Vaillant ecoFIT Pure 830 91.05% £2,100
    Worcester Bosch Greenstar Si Compact 25Si
    PP Score 91.77% Est price

    £2,100

    Worcester Bosch Greenstar 8000 Life 30kW
    PP Score 91.66% Est price

    £2,200

    Worcester Bosch Greenstar CDi Compact 32
    PP Score 91.56% Est price

    £2,100

    Worcester Bosch Greenstar 2000 30kW
    PP Score 91.55% Est price

    £1,900

    Worcester Bosch Greenstar i 25i
    PP Score 91.48% Est price

    £2,100

    Vaillant ecoTEC Plus 938
    PP Score 91.46% Est price

    £2,700

    Worcester Bosch Greenstar 4000 25kW
    PP Score 91.41% Est price

    £2,100

    Viessmann Vitodens 050-W 35kW
    PP Score 91.23% Est price

    £1,900

    Worcester Bosch Greenstar 8000 Style 30kW
    PP Score 91.18% Est price

    £2,300

    Vaillant ecoFIT Pure 830
    PP Score 91.05% Est price

    £2,100

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