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Gas Combi Boilers, Gas Condensing Combi Boilers



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Ravenheat CSI 85AAA 780 Condensing Combi Gas Boiler 28kW including Horizontal Flue and Clock

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas Fuel BoilerThis Product is In StockThis Product is RecommendedThis Product Comes With a Free Flue
Ref: PRRHCSI85AAA

RRP: £957.60
Our Price: £550.62
Saving: £406.98


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Biasi Riva Plus 24 Combi Gas Boiler (including Standard Horizontal Flue)

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas Fuel BoilerThis Product is In StockThis Product is RecommendedThis Product Comes With a Free Flue
Ref: BSRIVAP24C

RRP: £939.62
Our Price: £598.80
Saving: £340.82


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Ariston E-COMBI 24 FF Condensing Combi Gas Boiler (NG or LPG)

Delivery: 7 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerLPG or Natural Gas Fuel BoilerThis Product is In StockThis Product is Recommended
Ref: HPARIS3665092

RRP: £1236.00
Our Price: £599.99
Saving: £636.01


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EHC EcoSAVE Condensing Combi Gas Boiler 25kW

Delivery: 4 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerLPG or Natural Gas Fuel BoilerThis Product has a Free Integral Magnetic FilterThis Product is In Stock
Ref: EHCECO25

RRP: £946.44
Our Price: £629.64
Saving: £316.80


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Biasi Riva Plus 28 Combi Gas Boiler (including Standard Horizontal Flue)

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas Fuel BoilerThis Product is In StockThis Product is RecommendedThis Product Comes With a Free Flue
Ref: BSRIVAP28C

RRP: £993.96
Our Price: £630.00
Saving: £363.96


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Biasi ActivA 25C Combi Gas Boiler

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas Fuel BoilerThis Product is In StockThis Product is Recommended
Ref: BSACT25C

RRP: £1145.64
Our Price: £652.80
Saving: £492.84


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Ravenheat CSI 150 Condensing Combi Gas Boiler 42kW including Horizontal Flue and Clock

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas Fuel BoilerThis Product is In StockThis Product is RecommendedThis Product Comes With a Free Flue
Ref: PRRHCSI150

RRP: £1140.00
Our Price: £655.50
Saving: £484.50


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Ariston E-COMBI 30 FF Condensing Combi Gas Boiler (NG or LPG)

Delivery: 7 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerLPG or Natural Gas Fuel BoilerThis Product is In StockThis Product is Recommended
Ref: HPARIS3665093

RRP: £1362.00
Our Price: £665.11
Saving: £696.89


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Alpha INTEC 28 X Condensing Combi Gas Boiler

Delivery: 7 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 195413

RRP: £1128.52
Our Price: £683.95
Saving: £444.57


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Biasi ActivA 30C Combi Gas Boiler

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas Fuel BoilerThis Product is In StockThis Product is Recommended
Ref: BSACT30C

RRP: £1224.84
Our Price: £700.80
Saving: £524.04


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Ariston E-COMBI 38 FF Condensing Combi Gas Boiler (NG or LPG)

Delivery: 7 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerLPG or Natural Gas Fuel BoilerThis Product is In StockThis Product is Recommended
Ref: HPARIS3665094

RRP: £1494.00
Our Price: £706.82
Saving: £787.18


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Glowworm 24Cx Flexicom Condensing Combi Gas Boiler

Delivery: 4 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 108052

RRP: £1192.50
Our Price: £712.13
Saving: £480.37


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Ideal Logic 24W Condensing Combi Gas Boiler

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 123170

RRP: £1070.42
Our Price: £713.62
Saving: £356.80


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Ferroli Optimax HE 31C Condensing Combi Gas Boiler (with Horizontal Flue Kit and Programmer)

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: PRPK003

RRP: £1140.08
Our Price: £723.10
Saving: £416.98


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Potterton Promax 24HE Condensing Combi Gas Boiler

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 118347

RRP: £1269.00
Our Price: £762.79
Saving: £506.21


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Baxi Duo-Tec 24HE Condensing Combi Gas Boiler

Delivery: 4 Working Days (Approx)

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Ref: 118640

RRP: £1336.50
Our Price: £765.98
Saving: £570.52


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Vaillant ecoTEC Pro 24 Condensing Combi Gas Boiler

Delivery: 4 Working Days (Approx)

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Ref: 127081

RRP: £1323.00
Our Price: £766.79
Saving: £556.21


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Biasi ActivA 35C Combi Gas Boiler

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas Fuel BoilerThis Product is In StockThis Product is Recommended
Ref: BSACT35C

RRP: £1359.24
Our Price: £772.80
Saving: £586.44


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Alpha CD25X HE Condensing Combi Gas Boiler

Delivery: 7 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 196056

RRP: £1282.73
Our Price: £777.41
Saving: £505.32


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Ariston CLAS HE 24 FF Condensing Combi Gas Boiler (NG or LPG)

Delivery: 7 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerLPG or Natural Gas Fuel BoilerThis Product is In StockThis Product is Recommended
Ref: ARIS3665032

RRP: £1608.00
Our Price: £781.68
Saving: £826.32


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Worcester Greenstar 24i Junior Condensing Combi Gas Boiler

Delivery: 4 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 100280

RRP: £1336.50
Our Price: £793.40
Saving: £543.10


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Glowworm 30Cx Flexicom Condensing Combi Gas Boiler

Delivery: 4 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 108053

RRP: £1330.50
Our Price: £794.84
Saving: £535.66


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Ideal Logic+ 24W Condensing Combi Gas Boiler

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 123174

RRP: £809.87
Our Price: £798.73
Saving: £11.14


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Ideal Logic 30W Condensing Combi Gas Boiler

Delivery: 5 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerNatural Gas BoilerThis Product is In Stock
Ref: 123171

RRP: £1207.40
Our Price: £804.94
Saving: £402.46


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EHC EcoSAVE Condensing Combi Gas Boiler 21kW (including Free Horizontal Flue Kit)

Delivery: 4 Working Days (Approx)

Manufacturer GuaranteeSedbuk A Rated BoilerLPG or Natural Gas Fuel BoilerThis Product has a Free Integral Magnetic FilterThis Product Comes With a Free Flue
Ref: EHCECO21

RRP: £920.35
Our Price: £809.96
Saving: £110.39


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Why Choose a Gas Combi Boiler

A Gas Combi Boiler is the normal installation nowadays in a small/medium sized property due to people wanting more space around the house (created by not needing Hot Water storage Cylinders or Cold Water storage tanks) and the need for Hot Water on Demand.

Gas Combi boilers work directly from the Cold Mains and supply Hot Water instantly without the need to use a Cylinder with an Immersion heater.

Gas Combi Boilers can be used for central heating by circulating hot water through radiators and Underfloor Heating systems.

How do Gas Combi Boilers Work

The water will pass through the boiler over a Heat Exchanger (made from Aluminium or Stainless Steel) which will produce Hot Water at the outlet almost immediately. Depending on Mains Pressure supply, gas combi boilers can achieve a Flow Rate ranging from 9.8 Litres per Min upto a massive 20 Litres per Minute.

Large Hot Water Demand for Gas Combi Boilers

In Small and medium sized properties, Combi boilers are an Ideal choice for due to minimal call for water i.e one Bathroom. Combi boilers will tend to struggle when calling for Hot Water from more than one outlet, which results in lower water flow as the hot water flow rate is divided by each water source used at the same time. Larger Gas Combi Boilers with a higher flow rate will cope better with these situations, but always consult your plumber first.

When fitting a Gas Combi Boiler to your Heating system, please note that you cannot boost the pressure to a shower by adding a Shower Pump as this is not allowed.

Are Gas Combi Boilers classed a High Efficiency Boilers?

Yes. All the Combi Boilers that heatandplumb.com have available for sale are condensing combi boilers. The high efficiency of these boilers is achieved by recycling and abstracting the heat from the exhaust gases where, in non-condensing boilers, the heat present in the exhaust gases is wasted to the atmosphere.

The Different makes of Gas Combi Boilers

Most boiler manufacturers produce combi boilers, and heatandplumb.com can supply the following gas combi boilers:
  • Heatline Combi Boilers
  • Glowworm Combi Boilers
  • Vaillant Combi Boilers
  • Worcester Combi Boilers
  • Vokera Combi Boilers
  • Baxi Combi Boilers
  • Ideal Combi Boilers
  • Potterton Combi Boilers
  • Keston Combi Boilers
  • Ariston Combi Boilers
  • Biasi Combi Boilers
  • Ferroli Combi Boilers
Combi Boiler Prices and specifications change alot depending on the manufacturer you choose, so investigate the range we have to offer below and if you have any questions don't forget to give our sales team a call on 01208 812587 to answer your questions.





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