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Boiler reviews

Reliable boilers from recommended brands

Don't let your new boiler burn a hole in your pocket. The Which? boilers review reveals that choosing the right boiler could cut your gas and oil use, and reduce the financial pain of rising energy prices. Our reviews assess boilers for efficiency, reliability and more – bringing you the best on the market.

- Best Buys The top 40 boilers we recommend

All boilers by brand (184 on test)

Baxi
Duo-tec 2 Combi 24 GA
From GBP750.00
Baxi
Duo-tec 2 Combi 28 GA
From GBP870.00
Baxi
Duo-tec 2 Combi 33 GA
From GBP970.00
Baxi
Duo-tec 2 Combi 40 GA
From GBP1,020.00
Baxi
Megaflo 2 System compact 12 GA
From GBP700.00

Baxi
Megaflo 2 System compact 15 GA
From GBP700.00
Baxi
Megaflo 2 System compact 18 GA
From GBP700.00
Baxi
Megaflo 2 System compact 24 GA
From GBP700.00
Baxi
Megaflo 2 System compact 28 GA
From GBP700.00
Baxi
Megaflo 2 System compact 32 GA
From GBP700.00

Baxi
Neta-tec combi 24 GA
From GBP530.00
Baxi
Neta-tec combi 28 GA
From GBP890.00
Baxi
Neta-tec combi 33 GA
From GBP660.00
Baxi
Platinum C24 HE A
From GBP940.00
Baxi
Platinum C28 HE A
From GBP1,030.00

Baxi
Platinum C33 HE A
From GBP1,150.00
Baxi
Platinum C40 HE A
From GBP1,260.00
Baxi
Solo 12 HE A
From GBP640.00
Baxi
Solo 15 HE A
From GBP680.00
Baxi
Solo 18 HE A
From GBP740.00

Baxi
Solo 24 HE A
From GBP780.00
Baxi
Solo 30 HE A
From GBP830.00
Glow-Worm
Betacom 24a
From GBP630.00
Glow-Worm
Betacom 28a
From GBP770.00
Glow-Worm
Flexicom 12hx
From GBP560.00

Glow-Worm
Flexicom 15hx
From GBP590.00
Glow-Worm
Flexicom 18hx
From GBP620.00
Glow-Worm
Flexicom 24cx
From GBP660.00
Glow-Worm
Flexicom 24hx
From GBP690.00
Glow-Worm
Flexicom 30cx
From GBP790.00

Glow-Worm
Flexicom 30hx
From GBP730.00
Glow-Worm
Flexicom 35cx
From GBP900.00
Glow-Worm
Flexicom 35hx
From GBP1,040.00
Glow-Worm
Ultracom2 24cxi
From GBP740.00
Glow-Worm
Ultracom2 30cxi
From GBP820.00

Glow-Worm
Ultracom2 35cxi
From GBP980.00
Glow-Worm
Ultracom2 35 store
From GBP1,360.00
Grant
Vortex Eco Outdoor 15-21
From GBP1,300.00
Grant
Vortex Eco Outdoor 21-26
From GBP1,400.00
Grant
Vortex Eco Outdoor 26-35
From GBP1,600.00

Grant
Vortex Eco Utility 15-21
From GBP1,080.00
Grant
Vortex Eco Utility 21-26
From GBP1,190.00
Grant
Vortex Eco Utility 26-35
From GBP1,400.00
Grant
Vortex Eco Wall Hung External 12-16
From GBP1,500.00
Grant
Vortex Eco Wall Hung External 16-21
From GBP1,660.00

Grant
Vortex Eco Wall Hung Internal 12-16
From GBP1,250.00
Grant
Vortex Eco Wall Hung Internal 16-21
From GBP1,300.00
Grant
Vortex Pro External 15-21
From GBP1,400.00
Grant
Vortex Pro External 15-26
From GBP1,560.00
Grant
Vortex Pro External 26-36
From GBP1,850.00

Grant
Vortex Pro External 36-46
From GBP2,100.00
Grant
Vortex Pro External combi 21e
From GBP2,000.00
Grant
Vortex Pro External combi 26e
From GBP2,200.00
Grant
Vortex Pro External combi 36e
From GBP2,310.00
Grant
Vortex Pro Internal Combi 21e
From GBP2,000.00

Grant
Vortex Pro Internal Combi 26e
From GBP2,200.00
Grant
Vortex Pro Internal Combi 36e
From GBP2,310.00
Grant
Vortex Pro kitchen 15-21
From GBP1,150.00
Grant
Vortex Pro kitchen 15-26
From GBP1,450.00
Grant
Vortex Pro kitchen 26-36
From GBP1,830.00

Grant
Vortex Pro kitchen 36-46
From GBP1,810.00
Grant
Vortex Pro kitchen 46-58
From GBP1,870.00
Grant
Vortex Pro kitchen 58-70
From GBP1,950.00
Ideal
Logic+ 24
From GBP800.00
Ideal
Logic+ 30
From GBP890.00

Ideal
Logic+ 35
From GBP1,000.00
Ideal
Logic Code Combi 26
From GBP1,030.00
Ideal
Logic Code Combi 33
From GBP1,200.00
Ideal
Logic code Combi 38
From GBP1,250.00
Ideal
Logic+ Heat 12
From GBP680.00

Ideal
Logic Heat 12
From GBP590.00
Ideal
Logic+ Heat 15
From GBP700.00
Ideal
Logic Heat 15
From GBP600.00
Ideal
Logic+ Heat 18
From GBP730.00
Ideal
Logic Heat 18
From GBP660.00

Ideal
Logic+ Heat 24
From GBP760.00
Ideal
Logic Heat 24
From GBP680.00
Ideal
Logic+ Heat 30
From GBP860.00
Ideal
Logic Heat 30
From GBP780.00
Ideal
Logic+ System 15
From GBP750.00

Ideal
Logic System 15
From GBP670.00
Ideal
Logic+ System 18
From GBP770.00
Ideal
Logic System 18
From GBP700.00
Ideal
Logic+ System 24
From GBP810.00
Ideal
Logic System 24
From GBP730.00

Ideal
Logic+ System 30
From GBP830.00
Ideal
Logic System 30
From GBP830.00
Ideal
Mexico HE 15
From GBP860.00
Ideal
Mexico HE 18
From GBP890.00
Ideal
Mexico HE 24
From GBP1,220.00

Ideal
Mexico HE 30
From GBP1,500.00
Ideal
Mexico HE 36
From GBP2,060.00
Potterton
Gold Combi 24 HE A
From GBP840.00
Potterton
Gold Combi 28 HE A
From GBP930.00
Potterton
Gold Combi 33 HE A
From GBP1,050.00

Potterton
Heatmax Combi 24 HE
From GBP584.00
Potterton
Heatmax Combi 28 HE
From GBP639.00
Potterton
Heatmax Combi 33 HE
From GBP706.00
Potterton
Promax 12 SL
From GBP590.00
Potterton
Promax 15 HE Plus
From GBP700.00

Potterton
Promax 15 SL
From GBP650.00
Potterton
Promax 18 SL
From GBP680.00
Potterton
Promax 24 HE Plus
From GBP760.00
Potterton
Promax 24 SL
From GBP720.00
Potterton
Promax 30 HE Plus
From GBP850.00

Potterton
Promax 30 SL
From GBP750.00
Potterton
Promax Combi 24 HE Plus A
From GBP760.00
Potterton
Promax Combi 28 HE Plus A
From GBP830.00
Potterton
Promax Combi 33 HE Plus A
From GBP960.00
Potterton
Promax System 12 HE Plus A
From GBP700.00

Potterton
Promax System 15 HE Plus A
From GBP700.00
Potterton
Promax System 18 HE Plus A
From GBP720.00
Potterton
Promax System 24 HE Plus A
From GBP800.00
Potterton
Promax System 32 HE Plus A
From GBP820.00
Vaillant
ecoTEC exclusive 832
From GBP1,200.00

Vaillant
ecoTEC exclusive 838
From GBP1,270.00
Vaillant
ecoTEC plus 415
From GBP700.00
Vaillant
ecoTEC plus 418
From GBP780.00
Vaillant
ecoTEC plus 428
From GBP870.00
Vaillant
ecoTEC plus 438
From GBP1,280.00

Vaillant
ecoTEC plus 612
From GBP740.00
Vaillant
ecoTEC plus 615
From GBP780.00
Vaillant
ecoTEC plus 618
From GBP900.00
Vaillant
ecoTEC plus 624
From GBP990.00
Vaillant
ecoTEC plus 630
From GBP1,100.00

Vaillant
ecoTEC plus 637
From GBP1,160.00
Vaillant
ecoTEC plus 824
From GBP960.00
Vaillant
ecoTEC plus 831
From GBP1,070.00
Vaillant
ecoTEC plus 837
From GBP1,200.00
Vaillant
ecoTEC plus 937
From GBP1,340.00

Vaillant
ecoTEC pro 24
From GBP780.00
Vaillant
ecoTEC pro 28
From GBP850.00
Worcester
Greenstar 12i System
From GBP720.00
Worcester
Greenstar 12Ri
From GBP660.00
Worcester
Greenstar 15i System
From GBP740.00

Worcester
Greenstar 15Ri
From GBP690.00
Worcester
Greenstar 18i System
From GBP780.00
Worcester
Greenstar 18Ri
From GBP750.00
Worcester
Greenstar 24i Junior
From GBP740.00
Worcester
Greenstar 24i System
From GBP830.00

Worcester
Greenstar 24Ri
From GBP780.00
Worcester
Greenstar 25Si
From GBP860.00
Worcester
Greenstar 27Cdi
From GBP950.00
Worcester
Greenstar 28i Junior
From GBP860.00
Worcester
Greenstar 30Cdi
From GBP1,060.00

Worcester
Greenstar 30CDi Regular
From GBP900.00
Worcester
Greenstar 30Si
From GBP960.00
Worcester
Greenstar 37Cdi
From GBP1,200.00
Worcester
Greenstar 40CDi Regular
From GBP1,300.00
Worcester
Greenstar 42Cdi
From GBP1,400.00

Worcester
Greenstar Camray 12-18
From GBP1,100.00
Worcester
Greenstar Camray 18-25
From GBP1,200.00
Worcester
Greenstar Camray 25-32
From GBP1,500.00
Worcester
Greenstar Camray External 12-18
From GBP1,340.00
Worcester
Greenstar Camray External 18-25
From GBP1,370.00

Worcester
Greenstar Camray External 25-32
From GBP1,700.00
Worcester
Greenstar Camray External System 12-18
From GBP1,700.00
Worcester
Greenstar Camray External System 18-25
From GBP1,850.00
Worcester
Greenstar Camray External System 25-32
From GBP2,100.00
Worcester
Greenstar Camray System 12-18
From GBP1,338.00

Worcester
Greenstar Camray System 18-25
From GBP1,404.00
Worcester
Greenstar Camray System 25-32
From GBP1,772.00
Worcester
Greenstar Camray Utility 12-18
From GBP1,100.00
Worcester
Greenstar Camray Utility 18-25
From GBP1,200.00
Worcester
Greenstar Camray Utility 25-32
From GBP1,500.00

Worcester
Greenstar Camray Utility System 12-18
From GBP1,250.00
Worcester
Greenstar Camray Utility System 18-25
From GBP1,330.00
Worcester
Greenstar Camray Utility System 25-32
From GBP1,700.00
Worcester
Greenstar Danesmoor
From GBP1,322.00
Worcester
Greenstar Danesmoor WM 12-18
From GBP1,600.00

Worcester
Greenstar Danesmoor WM 18-25
From GBP1,700.00
Worcester
Greenstar FS 30CDi Regular
From GBP1,300.00
Worcester
Greenstar FS 42CDi Regular
From GBP1,690.00
Worcester
Greenstar Heatslave 12/18
From GBP1,860.00
Worcester
Greenstar Heatslave 18/25
From GBP1,990.00

Worcester
Greenstar Heatslave 25/32
From GBP2,200.00
Worcester
Greenstar Heatslave External 12-18
From GBP1,830.00
Worcester
Greenstar Heatslave External 18-25
From GBP1,930.00
Worcester
Greenstar Heatslave External 25-32
From GBP2,100.00
Worcester
Greenstar Highflow 440Cdi
From GBP1,670.00

Worcester
Greenstar Highflow 550Cdi
From GBP2,000.00
Worcester
Greenstar Utility 18-25
From GBP1,230.00
Worcester
Greenstar Utility 32-50
From GBP1,750.00
Worcester
Greenstar Utility 50-70
From GBP1,850.00

Help

Best Buys
The Which? Best Buy award is given to products with high total test scores that perform consistently well in our rigorous lab tests and excel in all key areas.

Energy Savers
We award the Energy Saver logo to products that our testing shows are very energy efficient, meaning they'll cost you less to run.

Don't Buys
The Which? Don't Buy logo alerts you to the products that performed extremely poorly in one or more key areas of our tests.

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Reliable boilers from recommended brands

All boilers by brand (184 on test)