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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.
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Ariston E-Combi Evo 24HE Condensing Combi Gas Boiler
SAVE 54%
Available In Stock More info
  • Our Reference Code

    ARIS3300467

  • Manufacturer Code

    3300753

  • Usual Delivery Time

    Approx 2-3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ariston


Ariston E-Combi Evo 30HE Condensing Combi Gas Boiler
SAVE 54%
Available In Stock More info
  • Our Reference Code

    ARIS3300468

  • Manufacturer Code

    3300755

  • Usual Delivery Time

    Approx 2-3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ariston


Ariston E-Combi Evo 38HE Condensing Combi Gas Boiler
SAVE 55%
Available In Stock More info
  • Our Reference Code

    ARIS3300469

  • Manufacturer Code

    3300756

  • Usual Delivery Time

    Approx 2-3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ariston


Biasi Riva Plus HE 24 Combi Gas Boiler, Wall Hung, 24kW
SAVE 33%
Available In Stock More info
Biasi Riva Plus HE 24 Combi Gas Boiler, Wall Hung, 24kW
Delivery:3 Days
594.24 RRP: 884.18
  • Our Reference Code

    BSRIVAPLUSHE24C

  • Manufacturer Code

    RIVA PLUS HE 24C

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Biasi


Biasi Riva Plus HE 28 Combi Gas Boiler, Wall Hung, 28kW
SAVE 30%
Available In Stock More info
Biasi Riva Plus HE 28 Combi Gas Boiler, Wall Hung, 28kW
Delivery:3 Days
656.62 RRP: 938.52
  • Our Reference Code

    BSRIVAPLUSHE28C

  • Manufacturer Code

    RIVA PLUS HE 28C

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Biasi


Vaillant ecoTEC Pro 24 Condensing Combi Gas Boiler
Available In Stock More info
Vaillant ecoTEC Pro 24 Condensing Combi Gas Boiler
Delivery:5 Days
1142.72 RRP: 1593.00
  • Our Reference Code

    PETECPRO24

  • Manufacturer Code

    0010011689

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    1 Years

  • Brand

    Vaillant


Worcester Bosch Greenstar 25I natural gas compact boiler (ErP)
Available In Stock More info
  • Our Reference Code

    PWGS24IJ

  • Manufacturer Code

    7733600012

  • Usual Delivery Time

    Approx 4 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Worcester Bosch


Vaillant ecoTEC Exclusive 838 Condensing Gas Combination Boiler
SAVE 30%
Available In Stock More info
  • Our Reference Code

    PETECEXC838

  • Manufacturer Code

    10002669

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    3 Years

  • Brand

    Vaillant


Ariston Clas Evo 24HE Condensing Combi Gas Boiler
SAVE 55%
Available In Stock More info
  • Our Reference Code

    ARIS3300459

  • Manufacturer Code

    3300745

  • Usual Delivery Time

    Approx 2-3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Ariston


Vaillant ecoTEC Pro 28 Condensing Combi Gas Boiler
Available In Stock More info
Vaillant ecoTEC Pro 28 Condensing Combi Gas Boiler
Delivery:5 Days
1267.08 RRP: 1773.00
  • Our Reference Code

    PETEC2PRO28

  • Manufacturer Code

    0010011690

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    1 Years

  • Brand

    Vaillant


Ideal Logic Code 38kW Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic Code 38kW Condensing Combi Gas Boiler
Delivery:5 Days
1682.74 RRP: 2105.16
  • Our Reference Code

    PLOGIC38CODE

  • Manufacturer Code

    206327

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ideal Boilers


Vaillant ecoTEC Exclusive 832 Condensing Gas Combination Boiler
SAVE 30%
Available In Stock More info
  • Our Reference Code

    PETECEXC832

  • Manufacturer Code

    10002668

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    3 Years

  • Brand

    Vaillant


Vaillant ecoTEC Plus 937 Condensing Combi Gas Boiler
Available In Stock More info
Vaillant ecoTEC Plus 937 Condensing Combi Gas Boiler
Delivery:5 Days
1912.38 RRP: 2698.50
  • Our Reference Code

    PETEC+937

  • Manufacturer Code

    0010011691

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Vaillant


Ariston Clas Evo 30HE Condensing Combi Gas Boiler
Available In Stock More info
  • Our Reference Code

    ARIS3300460

  • Manufacturer Code

    3300746

  • Usual Delivery Time

    Approx 2-3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Ariston


Ideal Logic 24W Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic 24W Condensing Combi Gas Boiler
Delivery:5 Days
918.08 RRP: 1194.48
  • Our Reference Code

    PLOGIC24HE

  • Manufacturer Code

    204588

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ideal Boilers


Worcester Bosch Greenstar 30I natural gas compact boiler (ErP)
Available In Stock More info
  • Our Reference Code

    PWGS28IJ

  • Manufacturer Code

    7733600005

  • Usual Delivery Time

    Approx 4 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Worcester Bosch


Glowworm 24Cx Flexicom Condensing Combi Gas Boiler
SAVE 34%
Available In Stock More info
Glowworm 24Cx Flexicom Condensing Combi Gas Boiler
Delivery:4 Days
900.16 RRP: 1357.50
  • Our Reference Code

    PFCOM24CXGDC

  • Manufacturer Code

    10005483

  • Usual Delivery Time

    Approx 4 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Glow-Worm


Baxi Duo-Tec 24HE Condensing Combi Gas Boiler
SAVE 33%
Available In Stock More info
Baxi Duo-Tec 24HE Condensing Combi Gas Boiler
Delivery:3 Days
980.23 RRP: 1456.50
  • Our Reference Code

    PDUOTEC24HE

  • Manufacturer Code

    5118060

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Glowworm 30Cx Flexicom Condensing Combi Gas Boiler
SAVE 34%
Available In Stock More info
Glowworm 30Cx Flexicom Condensing Combi Gas Boiler
Delivery:4 Days
1006.28 RRP: 1518.00
  • Our Reference Code

    PFCOM30CXGDC

  • Manufacturer Code

    10005484

  • Usual Delivery Time

    Approx 4 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Glow-Worm


Glow-worm Ultracom2 24 CXI Condensing Combi Gas Boiler (NG or LPG)
SAVE 34%
Available In Stock More info
  • Our Reference Code

    PUCOM24CXI2

  • Manufacturer Code

    10008853

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Glow-Worm


Baxi Duo-Tec 28HE Condensing Combi Gas Boiler
SAVE 33%
Available In Stock More info
Baxi Duo-Tec 28HE Condensing Combi Gas Boiler
Delivery:3 Days
1124.95 RRP: 1675.50
  • Our Reference Code

    PDUOTEC28HE

  • Manufacturer Code

    5118646

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Glow-worm Ultracom2 30 CXI Condensing Combi Gas Boiler (NG or LPG)
SAVE 34%
Available In Stock More info
  • Our Reference Code

    PUCOM30CXI2

  • Manufacturer Code

    10008854

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Glow-Worm


Baxi Platinum 24 HE Condensing Combi Gas Boiler - 24 kW
SAVE 33%
Available In Stock More info
Baxi Platinum 24 HE Condensing Combi Gas Boiler - 24 kW
Delivery:3 Days
1170.30 RRP: 1752.00
  • Our Reference Code

    PPLAT24HE

  • Manufacturer Code

    5116062

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Baxi


Glowworm 35Cx Flexicom Condensing Combi Gas Boiler
SAVE 34%
Available In Stock More info
Glowworm 35Cx Flexicom Condensing Combi Gas Boiler
Delivery:5 Days
1215.65 RRP: 1833.00
  • Our Reference Code

    PFCOM35CXGDC

  • Manufacturer Code

    10005485

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Glow-Worm


Baxi Duo-Tec 33HE Condensing Combi Gas Boiler
SAVE 33%
Available In Stock More info
Baxi Duo-Tec 33HE Condensing Combi Gas Boiler
Delivery:3 Days
1248.46 RRP: 1870.50
  • Our Reference Code

    PDUOTEC33HE

  • Manufacturer Code

    5118062

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Baxi Platinum 28HE Condensing Combi Gas Boiler
SAVE 33%
Available In Stock More info
Baxi Platinum 28HE Condensing Combi Gas Boiler
Delivery:3 Days
1288.97 RRP: 1929.00
  • Our Reference Code

    PPLAT28HE

  • Manufacturer Code

    5116203

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Baxi


Baxi Duo-Tec 40HE Condensing Combi Gas Boiler
SAVE 34%
Available In Stock More info
Baxi Duo-Tec 40HE Condensing Combi Gas Boiler
Delivery:3 Days
1309.24 RRP: 1971.00
  • Our Reference Code

    PDUOTEC40HE

  • Manufacturer Code

    5121342

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Glow-worm Ultracom2 35 CXI Condensing Combi Gas Boiler (NG or LPG)
SAVE 34%
Available In Stock More info
  • Our Reference Code

    PUCOM35CXI2

  • Manufacturer Code

    10008855

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Glow-Worm


Vaillant ecoTEC Plus 824 Condensing Combi Gas Boiler
Available In Stock More info
Vaillant ecoTEC Plus 824 Condensing Combi Gas Boiler
Delivery:5 Days
1382.63 RRP: 1939.50
  • Our Reference Code

    PETEC+824

  • Manufacturer Code

    0010011685

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Vaillant


Ideal Logic Code 26kW Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic Code 26kW Condensing Combi Gas Boiler
Delivery:5 Days
1390.62 RRP: 1739.72
  • Our Reference Code

    PLOGIC26CODE

  • Manufacturer Code

    206325

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ideal Boilers


Baxi Platinum 33HE Condensing Combi Gas Boiler
SAVE 33%
Available In Stock More info
Baxi Platinum 33HE Condensing Combi Gas Boiler
Delivery:3 Days
1426.94 RRP: 2143.50
  • Our Reference Code

    PPLAT33HE

  • Manufacturer Code

    5116205

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Baxi


Ideal Logic Code 33kW Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic Code 33kW Condensing Combi Gas Boiler
Delivery:5 Days
1502.62 RRP: 1879.81
  • Our Reference Code

    PLOGIC33CODE

  • Manufacturer Code

    206326

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ideal Boilers


Vaillant ecoTEC Plus 831 Condensing Combi Gas Boiler
Available In Stock More info
Vaillant ecoTEC Plus 831 Condensing Combi Gas Boiler
Delivery:5 Days
1522.66 RRP: 2143.50
  • Our Reference Code

    PETEC+831

  • Manufacturer Code

    0010011686

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Vaillant


Baxi Platinum 40HE Condensing Combi Gas Boiler
SAVE 34%
Available In Stock More info
Baxi Platinum 40HE Condensing Combi Gas Boiler
Delivery:3 Days
1566.84 RRP: 2361.00
  • Our Reference Code

    PPLAT40HE

  • Manufacturer Code

    5121682

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Baxi


Vaillant ecoTEC Plus 837 Condensing Combi Gas Boiler
SAVE 33%
Available In Stock More info
Vaillant ecoTEC Plus 837 Condensing Combi Gas Boiler
Delivery:5 Days
1620.58 RRP: 2409.00
  • Our Reference Code

    PETECP837

  • Manufacturer Code

    0010011688

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Vaillant


Worcester Greenstar Highflow 440CDi Floor Standing Condensing Combi Gas Boiler
Available In Stock More info
  • Our Reference Code

    PWGSFS440CDI

  • Manufacturer Code

    7715330041

  • Usual Delivery Time

    Approx 4 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Worcester Bosch


Worcester Greenstar Highflow 550CDi Floor Standing Condensing Combi Gas Boiler
Available In Stock More info
  • Our Reference Code

    PWGSFS550CDI

  • Manufacturer Code

    7715330040

  • Usual Delivery Time

    Approx 4 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Worcester Bosch


Ariston Clas Evo 38HE Condensing Combi Gas Boiler
Available In Stock More info
  • Our Reference Code

    ARIS3300461

  • Manufacturer Code

    3300747

  • Usual Delivery Time

    Approx 2-3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Ariston


Ideal Logic 30W Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic 30W Condensing Combi Gas Boiler
Delivery:5 Days
1036.55 RRP: 1348.61
  • Our Reference Code

    PLOGIC30HE

  • Manufacturer Code

    204589

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ideal Boilers


Ideal Logic+ 24W Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic+ 24W Condensing Combi Gas Boiler
Delivery:5 Days
1112.77 RRP: 1458.02
  • Our Reference Code

    PLOGIC+24HE

  • Manufacturer Code

    204873

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Ideal Boilers


Ideal Logic 35W Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic 35W Condensing Combi Gas Boiler
Delivery:5 Days
1185.24 RRP: 1542.07
  • Our Reference Code

    PLOGIC35HE

  • Manufacturer Code

    204590

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Ideal Boilers


Ideal Logic+ 30W Condensing Combi Gas Boiler
Available In Stock More info
Ideal Logic+ 30W Condensing Combi Gas Boiler
Delivery:5 Days
1234.50 RRP: 1632.94
  • Our Reference Code

    PLOGIC+30HE

  • Manufacturer Code

    204874

  • Usual Delivery Time

    Approx 5 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Ideal Boilers


Baxi Avanta Plus 28c Condensing Combi Gas Boiler
SAVE 45%
Not Available  Out Of Stock
Baxi Avanta Plus 28c Condensing Combi Gas Boiler
Delivery:3 Days
876.73 RRP: 1597.54
  • Our Reference Code

    PAVANTA28C

  • Manufacturer Code

    7604136

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Baxi Avanta Plus 39c Condensing Combi Gas Boiler
Not Available  Out Of Stock
Baxi Avanta Plus 39c Condensing Combi Gas Boiler
Delivery:3 Days
1247.18 RRP: 2272.56
  • Our Reference Code

    PAVANTA39C

  • Manufacturer Code

    7604138

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Ideal I-Mini 30kW Condensing Combi Gas Boiler inlcuding Horizontal Flue
Not Available  Out Of Stock
  • Our Reference Code

    123145

  • Manufacturer Code

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    1 Years

  • Brand

    Ideal Boilers


Baxi Avanta Plus 24c Condensing Combi Gas Boiler
SAVE 45%
Not Available  Out Of Stock
Baxi Avanta Plus 24c Condensing Combi Gas Boiler
Delivery:3 Days
810.88 RRP: 1477.54
  • Our Reference Code

    PAVANTA24C

  • Manufacturer Code

    7604135

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Ideal Logic+ 24 Condensing Combi Gas Boiler including Horizontal Flue
Not Available  Out Of Stock
  • Our Reference Code

    100030

  • Manufacturer Code

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Ideal Boilers


Baxi Avanta Exclusive 28C Condensing Combi Gas Boiler
SAVE 45%
Not Available  Out Of Stock
Baxi Avanta Exclusive 28C Condensing Combi Gas Boiler
Delivery:3 Days
983.76 RRP: 1792.56
  • Our Reference Code

    PAVANTAEX28C

  • Manufacturer Code

    7604058

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Baxi


Ideal Logic+ 30 Condensing Combi Gas Boiler including Horizontal Flue
Not Available  Out Of Stock
  • Our Reference Code

    100031

  • Manufacturer Code

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    1 Years

  • Brand

    Ideal Boilers


Baxi Avanta Exclusive 35C Condensing Combi Gas Boiler
SAVE 45%
Not Available  Out Of Stock
Baxi Avanta Exclusive 35C Condensing Combi Gas Boiler
Delivery:3 Days
1103.10 RRP: 2010.02
  • Our Reference Code

    PAVANTAEX35C

  • Manufacturer Code

    7604059

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Baxi


Baxi Avanta Plus 35c Condensing Combi Gas Boiler
SAVE 45%
Not Available  Out Of Stock
Baxi Avanta Plus 35c Condensing Combi Gas Boiler
Delivery:3 Days
1164.86 RRP: 2122.56
  • Our Reference Code

    PAVANTA35C

  • Manufacturer Code

    7604137

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    2 Years

  • Brand

    Baxi


Worcester Greenstar 24i Junior Condensing Combi Gas Boiler including Horizontal Flue
Not Available  Out Of Stock
  • Our Reference Code

    100776

  • Manufacturer Code

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    1 Years

  • Brand

    Worcester Bosch


Ideal Logic+ 35 Condensing Combi Gas Boiler including Horizontal Flue
Not Available  Out Of Stock
  • Our Reference Code

    100032

  • Manufacturer Code

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    1 Years

  • Brand

    Ideal Boilers


Baxi Avanta Exclusive 39C Condensing Combi Gas Boiler
Not Available  Out Of Stock
Baxi Avanta Exclusive 39C Condensing Combi Gas Boiler
Delivery:3 Days
1222.49 RRP: 2227.56
  • Our Reference Code

    PAVANTAEX39C

  • Manufacturer Code

    7604060

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    5 Years

  • Brand

    Baxi


Worcester Bosch Greenstar 30I eRP boiler and flue pack
Not Available  Out Of Stock
Worcester Bosch Greenstar 30I eRP boiler and flue pack
Delivery:3 Days
1356.48 RRP: 1406.59
  • Our Reference Code

    100777

  • Manufacturer Code

  • Usual Delivery Time

    Approx 3 Working Days

  • Guarantee Period

    1 Years

  • Brand

    Worcester Bosch




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