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Gas Combi Boilers

A combi or combination gas boiler is an energy efficient water heater and central heating boiler all in one. There is no need for a separate cylinder or cold water storage tank when using a combi boiler, as hot water is delivered directly and instantly at mains pressure. Combi boilers save on installation costs and save you space too!

You can expect to pay anything from $600 up to $1500 for a combi gas boiler, but the costly market-leading brands such as Vaillant and Worcester Bosch have similar or identical inner parts to lower-priced models a lot of the time. Call our sales team to make sure you're getting the best deal.


Biasi Riva Plus HE 24 Combi Gas Boiler, Wall Hung, 24kW
£593.40 RRP: £882.89
SAVE 33%
Biasi Riva Plus HE 28 Combi Gas Boiler, Wall Hung, 28kW
£640.20 RRP: £914.18
SAVE 30%
Ariston E-Combi Evo 24HE Condensing Combi Gas Boiler
£687.22 RRP: £1,497.60
SAVE 54%
Glow Worm Flexicom 30cx Natural Gas Combi Boiler with Horizontal Flue Pack
£689.78 RRP: £718.80
Glow Worm Ultracom2 24CXi Natural Gas Combi Boiler with Flue Pack
£718.58 RRP: £756.00
Biasi Advance Plus 30 C Combi Gas Boiler, Wall Hung, 30kW
£749.40 RRP: £1,364.30
SAVE 45%
Biasi Inovia 25 C Combi Gas Boiler, Wall Hung, 25kW
£757.20 RRP: £1,302.55
SAVE 42%
Ariston E-Combi Evo 30HE Condensing Combi Gas Boiler
£757.31 RRP: £1,659.60
SAVE 54%
Biasi Advance Plus 25 C Combi Gas Boiler, Wall Hung, 25kW
£765.00 RRP: £1,325.59
SAVE 42%
Biasi Inovia 30 C Combi Gas Boiler, Wall Hung, 30kW
£788.40 RRP: £1,429.27
SAVE 45%
Biasi Advance Plus 35 C Combi Gas Boiler, Wall Hung, 35kW
£819.60 RRP: £1,693.88
SAVE 52%
Biasi Inovia 35 C Combi Gas Boiler, Wall Hung, 35kW
£819.60 RRP: £1,603.77
SAVE 49%
Ariston E-Combi Evo 38HE Condensing Combi Gas Boiler
£858.08 RRP: £1,892.40
Ariston Clas Evo 24HE Condensing Combi Gas Boiler
£886.19 RRP: £1,957.20
Ariston Clas Evo 30HE Condensing Combi Gas Boiler
£933.98 RRP: £2,067.60
Ariston Clas HE Evo System Gas Boiler 18kW (including Advance Pack)
£997.97 RRP: £2,138.40
Ariston Clas Evo 38HE Condensing Combi Gas Boiler
£1,015.55 RRP: £2,256.00
Ariston Clas HE Evo System Gas Boiler 24kW (including Advance Pack)
£1,050.71 RRP: £2,256.00
Ariston Clas HE Evo Combi Gas Boiler 24kW (including Advance Pack)
£1,056.05 RRP: £2,268.00
Ariston Clas HE Evo System Gas Boiler 30kW (including Advance Pack)
£1,102.93 RRP: £2,372.40
Ariston Clas HE Evo Combi Gas Boiler 30kW (including Advance Pack)
£1,137.94 RRP: £2,450.40
Ariston Clas HE Evo Combi Gas Boiler 38kW (including Advance Pack)
£1,219.20 RRP: £2,631.60
Vaillant ecoTEC Pro 24 Condensing Combi Gas Boiler
£1,381.05 RRP: £1,456.80
Vaillant ecoTEC Pro 28 Condensing Combi Gas Boiler
£1,531.21 RRP: £1,615.20
Vaillant ecoTEC Plus 837 Condensing Combi Gas Boiler
£1,620.58 RRP: £2,025.72
Vaillant ecoTEC Plus 824 Condensing Combi Gas Boiler
£1,671.13 RRP: £1,762.80
Vaillant ecoTEC Plus 831 Condensing Combi Gas Boiler
£1,839.50 RRP: £1,940.40
Vaillant ecoTEC Exclusive 832 Condensing Gas Combination Boiler
£1,990.80 RRP: £2,100.00
Vaillant ecoTEC Exclusive 838 Condensing Gas Combination Boiler
£2,118.21 RRP: £2,234.40
Vaillant ecoTEC Plus 937 Condensing Combi Gas Boiler
£2,311.60 RRP: £2,438.40
Warmflow Condensing System Gas Boiler 25 kW inc Flue Kit
£399.60 RRP: £432.00
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