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Excellent 4.7 out of 5
Excellent 4.7 out of 5

Compare System Boilers

You can select up to 4 boilers. Simply add your choices to compare.

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Fuel type

Boiler type

Manufacturer

ACV

Boiler Model kW Efficiency Warranty Typical Price
ACV E-Tech W 15kW Mono System Electric Boiler 15kw 37% 1 year £1,128 VIEW
ACV E-Tech W 15kW Tri Electric Boiler 15kw 37% 1 year £1,160 VIEW
ACV E-Tech W 22kW Tri Electric Boiler 22kw 37% 1 year £1,310 VIEW
ACV E-Tech W 28kW Tri Electric Boiler 28kw 37% 1 year £1,560 VIEW
ACV E-Tech W 36kW Tri Electric Boiler 36kw 37% 1 year £1,810 VIEW

Alpha

Boiler Model kW Efficiency Warranty Typical Price

Available

Alpha ProTec Plus 50 System Gas Boiler 54kw 88.5% 3 years £983 VIEW
Alpha ProTec Plus 70 System Gas Boiler 74kw 88.6% 3 years £985 VIEW
Alpha ProTec Plus 90 System Gas Boiler 98kw 88.7% 3 years £1,144 VIEW
Alpha ProTec Plus 115 System Gas Boiler 121kw 88.5% 3 years £1,246 VIEW
Alpha E-TEC 20S System Gas Boiler 19.2 kw 93% 5 years £1,015 VIEW
Alpha E-TEC 30s System Gas Boiler 29.7 kw 93% 5 years £975 VIEW

Discontinued

Alpha CD28S System Gas Boiler 28kw 88.80% 3 years £840 VIEW
Alpha CD20S System Gas Boiler 20kw 88.8% 3 years £770 VIEW
Alpha CD12S System Gas Boiler 12kw 88.60% 3 years £760 VIEW
Alpha InTec2 20SE System Gas Boiler 20kw 88.9% 5 years £795 VIEW
Alpha InTec2 30SE System Gas Boiler 30kw 89% 5 years £827 VIEW
Alpha InTec 12S System Gas Boiler 13kw 88.80% 3 years £800 VIEW
Alpha InTec 18S System Gas Boiler 20kw 88.80% 3 years £900 VIEW
Alpha InTec 28S System Gas Boiler 30kw 89.00% 3 years £900 VIEW

Ariston

ATAG

Boiler Model kW Efficiency Warranty Typical Price
ATAG IS40 40kW System Gas Boiler 48.8 kw 94% 10 years £N/A VIEW
ATAG IS32 32kW System Gas Boiler 31.2 kw 94% 10 years £N/A VIEW
ATAG IS24 24kW System Gas Boiler 23.2 kw 94% 10 years £N/A VIEW
ATAG IS18 18kW System Gas Boiler 17.5 kw 93% 10 years £N/A VIEW
ATAG IS15 15kW System Gas Boiler 14.7 kw 93% 10 years £N/A VIEW

Baxi

Boiler Model kW Efficiency Warranty Typical Price

Available

Baxi Megaflo System 15 Gas Boiler 15kw 88.6% 7 years £765 VIEW
Baxi Megaflo System 18 Gas Boiler 18kw 88.6% 7 years £740 VIEW
Baxi Megaflo System 24 Gas Boiler 24kw 88.6% 7 years £895 VIEW
Baxi Megaflo System 28 Gas Boiler 28kw 88.5% 7 years £945 VIEW
Baxi Megaflo System 32 Gas Boiler 32kw 88.5% 7 years £975 VIEW
Baxi 615 15kW System Gas Boiler 15kw 89% 7 years £N/A VIEW
Baxi 618 18kW System Gas Boiler 18kw 89% 7 years £N/A VIEW
Baxi 624 24kW System Gas Boiler 24kw 89% 7 years £N/A VIEW
Baxi 818 18kW System Gas Boiler 18kw 93% 10 years £N/A VIEW
Baxi 824 24kW System Gas Boiler 24kw 93% 10 years £N/A VIEW

Discontinued

Baxi EcoBlue System 12 Gas Boiler 12kw 89.1% 7 years £880 VIEW
Baxi EcoBlue System 15 Gas Boiler 15kw 89.1% 7 years £925 VIEW
Baxi EcoBlue System 18 Gas Boiler 18kw 89.1% 7 years £960 VIEW
Baxi EcoBlue System 24 Gas Boiler 24kw 89.1% 7 years £976 VIEW
Baxi EcoBlue System 28 Gas Boiler 28kw 89.1% 7 years £1,112 VIEW
Baxi EcoBlue System 32 Gas Boiler 32kw 89.1% 7 years £1,127 VIEW

Biasi

Electric Heating Company

ELNUR

Ferroli

Firebird

Boiler Model kW Efficiency Warranty Typical Price

Available

Firebird Envirolite Utility Internal 35kW Regular Oil Boiler 35kw 92% 2 years £2,200 VIEW
Firebird Envirolite System Internal 35kW Oil Boiler 35kw 93% 2 years £1,905 VIEW
Firebird Enviromax C20 Internal 20kW System Oil Boiler 20kw 94.8% 2 years £1,555 VIEW
Firebird Enviromax C26 Internal 26kW System Oil Boiler 26kw 94.8% 2 years £N/A VIEW
Firebird Eviromax C35 Internal 35kW System Oil Boiler 35kw 94.4% 2 years £1,945 VIEW
Firebird Eviromax C44 Internal 44kW System Oil Boiler 44kw 93.8% 2 years £2,205 VIEW
Firebird Enviroblue SystemPac C26 External 26kW System Oil Boiler 26kw 94.8% 2 years £N/A VIEW
Firebird Enviroblue SystemPac C20 External 20kW System Oil Boiler 20kw 94.8% 2 years £N/A VIEW
Firebird Enviroblue SystemPac C35 External 35kW System Oil Boiler 35kw 94.4% 2 years £N/A VIEW
Firebird Enviroblue Slimline SystemPac C20 External System Oil Boiler 20kw 93% 2 years £N/A VIEW
Firebird Enviroblue Slimline SystemPac C26 Ext. 26kW System Oil Boiler 26kw 93% 2 years £N/A VIEW
Firebird Enviroblue Slimline SystemPac C35 External System Oil Boiler 35kw 92% 2 years £N/A VIEW
Firebird Envirogreen System C20 Internal Oil Boiler 20kw 92.5% 2 years £N/A VIEW
Firebird Envirogreen System C26 Internal Oil Boiler 26kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen System C35 Internal Oil Boiler 35kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen System C44 Internal Oil Boiler 44kw 93.8% 2 years £N/A VIEW
Firebird Envirogreen Systempac C20 External Oil Boiler 20kw 92.5% 2 years £N/A VIEW
Firebird Envirogreen Systempac C26 External Oil Boiler 26kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen Systempac C35 External Oil Boiler 35kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen Systempac C44 External Oil Boiler 44kw 93.8% 2 years £N/A VIEW
Firebird Envirogreen Slimline Systempac C20 External Oil Boiler 20kw 92.5% 2 years £N/A VIEW
Firebird Envirogreen Slimline Systempac C26 External Oil Boiler 44kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen Slimline Systempac C35 External Oil Boiler 35kw 92.6% 2 years £N/A VIEW

Discontinued

Firebird Enviroblue Kitchen System Internal 20kW Oil Boiler 20kw 93% 2 years £1,250 VIEW
Firebird Enviroblue Kitchen System Internal 26kW Oil Boiler 26kw 93% 2 years £1,450 VIEW
Firebird Enviroblue Kitchen System Internal 35kW Oil Boiler 35kw 93% 2 years £2,000 VIEW

Glow-worm

Boiler Model kW Efficiency Warranty Typical Price

Available

Glow-worm Easicom 25s System Gas Boiler 25kw 94% 3 years £860 VIEW
Glow-worm Energy System 12kW Gas Boiler 12kw 89.3% 7 years £700 VIEW
Glow-worm Energy System 15kW Gas Boiler 15kw 89.3% 7 years £725 VIEW
Glow-worm Energy System 18kW Gas Boiler 18kw 89.3% 7 years £765 VIEW
Glow-worm Energy System 25kW Gas Boiler 25kw 89.3% 7 years £785 VIEW
Glow-worm Energy System 30kW Gas Boiler 30kw 89.3% 7 years £850 VIEW
Glow-worm Ultimate3 25kW System Gas Boiler 25kw 89.7% 5 years £725 VIEW
Glow-worm Easicom3 25s System Gas Boiler 25kw 89.7% 4 years £595 VIEW

Discontinued

Glow-worm Ultimate2 25kW System Gas Boiler 25kw 89.3% 5 years £820 VIEW

Grant

Heatrae Sadia

Ideal

Boiler Model kW Efficiency Warranty Typical Price

Best Sellers

Ideal Logic System S15 Gas Boiler 15 kw 93% 2 years £785 VIEW
Ideal Logic System S18 Gas Boiler 15 kw 93% 2 years £834 VIEW
Ideal Logic System S24 Gas Boiler 24.2 kw 94% 2 years £856 VIEW
Ideal Logic System S30 Gas Boiler 30.3 kw 93% 2 years £920 VIEW

Available

Ideal Vogue GEN2 S15 System Gas Boiler 15kw 92.4% 10 years £976 VIEW
Ideal Vogue GEN2 S18 System Gas Boiler 18kw 93.2% 10 years £1,074 VIEW
Ideal Vogue GEN2 S26 System Gas Boiler 26kw 93.1% 10 years £1,142 VIEW
Ideal Vogue GEN2 S32 System Gas Boiler 32kw 93.2% 10 years £1,264 VIEW
Ideal Logic Max S15 System Gas Boiler 15 kw 93% 10 years £970 VIEW
Ideal Logic Max S18 System Gas Boiler 18 kw 93% 10 years £N/A VIEW
Ideal Logic Max S24 System Gas Boiler 24.2 kw 94% 10 years £1,049 VIEW
Ideal Logic Max S30 System Gas Boiler 30.3 kw 93% 10 years £1,084 VIEW
Ideal Vogue Max S15 System Gas Boiler 15 kw 92.4% 10 years £1,030 VIEW
Ideal Vogue Max S18 System Gas Boiler 18 kw 93.2% 10 years £1,125 VIEW
Ideal Vogue Max S26 System Gas Boiler 26 kw 93.1% 10 years £1,201 VIEW
Ideal Vogue Max S32 System Gas Boiler 32 kw 93.2% 10 years £1,258 VIEW
Ideal Logic Plus System S15 Gas Boiler 15 kw 93% 7 years £874 VIEW
Ideal Logic Plus System S18 Gas Boiler 18 kw 93% 7 years £885 VIEW
Ideal Logic Plus System S24 Gas Boiler 24.2 kw 94% 7 years £918 VIEW
Ideal Logic Plus System S30 Gas Boiler 30.3 kw 93% 7 years £954 VIEW

Discontinued

Ideal Vogue 15kW System Gas Boiler 15kw 92% 10 years £840 VIEW
Ideal Vogue 18kW System Gas Boiler 18kw 93% 10 years £930 VIEW
Ideal Vogue 26kW System Gas Boiler 26kw 93% 10 years £910 VIEW
Ideal Vogue 32kW System Gas Boiler 32kw 93% 10 years £1,004 VIEW

Intergas

Boiler Model kW Efficiency Warranty Typical Price
Intergas Compact HRE SB 18Kw System Gas Boiler 18kw 88.9% 7 years £785 VIEW
Intergas Compact HRE SB 24 System Gas Boiler 23kw 88.9% 7 years £875 VIEW
Intergas Compact HRE SB 30 System Gas Boiler 27kw 89.2% 7 years £955 VIEW
Intergas Compact HRE SB 40 System Gas Boiler 41kw 89.2% 7 years £1,135 VIEW

Johnson and Starley

Boiler Model kW Efficiency Warranty Typical Price
Johnson and Starley QuanTec 24s System 24kW Oil Boiler 24kw 89.6% 8 years £N/A VIEW

Keston

Boiler Model kW Efficiency Warranty Typical Price
Keston S30 30kW System Gas Boiler 30kw 89.5% 7 years £1,100 VIEW

Main

Boiler Model kW Efficiency Warranty Typical Price
Main System Eco Elite 24kW Gas Boiler 24kw 89.1% 3 years £618 VIEW
Main System Eco Elite 28kW Gas Boiler 28kw 88.8% 3 years £635 VIEW
Main Eco Compact 15kW System Gas Boiler 15kw 93% 5 years £610 VIEW
Main Eco Compact 18kW System Gas Boiler 18kw 93% 5 years £675 VIEW

Mistral

Boiler Model kW Efficiency Warranty Typical Price
Mistral Sealed System CS1 20kW Oil Boiler 20kw 92% 2 yr. parts - 5 yr. heat exch £2,300 VIEW
Mistral Sealed System CS2 26kW Oil Boiler 26kw 92% 2 yr. parts - 5 yr. heat exch £2,370 VIEW
Mistral Sealed System S1 20kW Oil Boiler 20kw 87% 2 yr. parts - 5 yr. heat exch £1,320 VIEW
Mistral Sealed System S2 26kW Oil Boiler 26kw 87% 2 yr. parts - 5 yr. heat exch £1,380 VIEW
Mistral Sealed System S3 35kW Oil Boiler 35kw 87% 2 yr. parts - 5 yr. heat exch £1,500 VIEW
Mistral Sealed System S4 41kW Oil Boiler 41kw 87% 2 yr. parts - 5 yr. heat exch £1,680 VIEW
Mistral Outdoor Sealed System OD SS1 20kW Oil Boiler 20kw 87% 2 yr. parts - 5 yr. heat exch £1,500 VIEW
Mistral Outdoor Sealed System OD SS2 26kW Oil Boiler 26kw 87% 2 yr. parts - 5 yr. heat exch £1,590 VIEW
Mistral Outdoor Sealed System OD SS4 41kW Oil Boiler 41kw 87% 2 yr. parts - 5 yr. heat exch £1,920 VIEW
Mistral Sealed System CS3 35kW Oil Boiler 35kw 92% 2 yr. parts - 5 yr. heat exch £2,700 VIEW
Mistral Sealed System CS4 41kW Oil Boiler 41kw 93% 2 yr. parts - 5 yr. heat exch £3,200 VIEW
Mistral Outdoor Sealed System COD SS1 20kW Oil Boiler 20kw 92% 2 yr. parts - 5 yr. heat exch £1,605 VIEW
Mistral Outdoor Sealed System COD SS2 26kW Oil Boiler 26kw 92% 2 yr. parts - 5 yr. heat exch £1,680 VIEW
Mistral Outdoor Sealed System COD SS3 35kW Oil Boiler 35kw 92% 2 yr. parts - 5 yr. heat exch £2,040 VIEW
Mistral Outdoor Sealed System COD SS4 41kW Oil Boiler 41kw 90% 2 yr. parts - 5 yr. heat exch £2,160 VIEW

Navien

Potterton

Boiler Model kW Efficiency Warranty Typical Price

Available

Potterton Promax System 12kW Gas Boiler 12kw 89% 2 years £845 VIEW
Potterton Promax System 15kW Gas Boiler 15kw 89% 2 years £935 VIEW
Potterton Promax System 18kW Gas Boiler 18kw 89% 2 years £830 VIEW
Potterton Promax System 24kW Gas Boiler 24kw 89% 2 years £875 VIEW
Potterton Promax System 32kW Gas Boiler 32kw 89% 2 years £965 VIEW
Potterton Ultra System 12kW Gas Boiler 12kw 89% 2 years £678 VIEW
Potterton Ultra System 15kW Gas Boiler 15kw 89% 2 years £900 VIEW
Potterton Ultra System 18kW Gas Boiler 18kw 89% 2 years £1,332 VIEW
Potterton Ultra System 21kW Gas Boiler 21kw 89% 2 years £1,322 VIEW
Potterton Ultra System 24kW Gas Boiler 24kw 89% 2 years £1,800 VIEW
Potterton Assure 15kW System Gas Boiler 15kw 93% 2 years £859 VIEW
Potterton Assure 18kW System Gas Boiler 18kw 93% 2 years £891 VIEW
Potterton Gold 18kW System Gas Boiler 18kw 89% 2 years £635 VIEW
Potterton Gold 24kW System Gas Boiler 24kw 89% 2 years £676 VIEW
Potterton Gold 28kW System Gas Boiler 28kw 89% 2 years £800 VIEW
Potterton Assure 24kW System Gas Boiler 24kw 93% 2 years £850 VIEW
Potterton Assure 12kW System Gas Boiler 12kw 93% 2 years £900 VIEW

Discontinued

Potterton Promax System HE Plus A 12kW Gas Boiler 12kw 91.10% 2 years £930 VIEW
Potterton Promax System HE Plus A 15kW Gas Boiler 15kw 91.1% 2 years £825 VIEW
Potterton Promax System HE Plus A 18kW Gas Boiler 18kw 91.1% 1 year £942 VIEW
Potterton Promax System HE Plus A 32kW Gas Boiler 32kw 91.1% 1 year £1,050 VIEW
Potterton Promax System HE Plus A 24kW Gas Boiler 24kw 91.1% 1 year £810 VIEW

Ravenheat

Boiler Model kW Efficiency Warranty Typical Price
Ravenheat WH System 4-24 26kW Gas Boiler 26kw 90.3% 5 years £579 VIEW
Ravenheat CS System 4-24 26kW Gas Boiler 26kw 90.3% 2 years £579 VIEW
Ravenheat CS System 3-20 26kW Gas Boiler 20kw 92% 2 years £N/A VIEW

Vaillant

Boiler Model kW Efficiency Warranty Typical Price

Available

Vaillant ecoTec plus 624 System Gas Boiler 24kw 89.4% 5 years £1,005 VIEW
Vaillant ecoTec plus 630 System Gas Boiler 30kw 89.4% 5 years £1,150 VIEW
Vaillant ecoTec plus 637 System Gas Boiler 37kw 89.2% 5 years £1,250 VIEW
Vaillant ecoFIT pure 612 system Gas boiler 12kw 89.3% 2 years £925 VIEW
Vaillant ecoFIT pure 615 system Gas boiler 15kw 89.1% 2 years £915 VIEW
Vaillant ecoFIT pure 618 system Gas boiler 18kw 89% 2 years £975 VIEW
Vaillant ecoFIT pure 625 system Gas boiler 25kw 89% 2 years £1,175 VIEW
Vaillant ecoFIT pure 630 system Gas boiler 30kw 89.3% 2 years £1,256 VIEW
Vaillant ecoTEC exclusive Green iQ 627 System Gas Boiler 27kw 94% 7 years £1,100 VIEW
Vaillant EcoTEC 65kW System Gas Boiler 65kw 95.5% 2 years £1,500 VIEW
Vaillant EcoTEC 46kW System Gas Boiler 46kw 95.8% 2 years £2,400 VIEW
Vaillant EcoTEC Plus 64kW System Gas Boiler 64kw 94% 5 years £1,500 VIEW
Vaillant EcoTEC Plus 48kW System Gas Boiler 48kw 94% 5 years £2,490 VIEW
Vaillant Home 12kW System Gas Boiler 12kw 93% 2 years £2,090 VIEW
Vaillant Home 15kW System Gas Boiler 15kw 93% 2 years £N/A VIEW
Vaillant Home 18kW System Gas Boiler 18kw 93% 2 years £N/A VIEW
Vaillant Home 25kW System Gas Boiler 25kw 89.4% 2 years £825 VIEW

Discontinued

Vaillant ecoTec plus 612 System Gas Boiler 12kw 89.0% 5 years £850 VIEW
Vaillant ecoTec plus 615 System Gas Boiler 15kw 89% 5 years £965 VIEW
Vaillant ecoTec plus 618 System Gas Boiler 18kw 89.3% 5 years £965 VIEW

Viessmann

Vokera

Warmflow

Worcester Bosch

Boiler Model kW Efficiency Warranty Typical Price

Best Sellers

Worcester Bosch Greenstar 24i System Gas Boiler 24.6 kw 94% 5 years £1,080 VIEW
Worcester Bosch Greenstar 12i System Gas Boiler 12.2 kw 94% 5 years £908 VIEW
Worcester Bosch Greenstar 9i System Gas Boiler 9.2 kw 93% 5 years £899 VIEW
Worcester Bosch Greenstar 15i System Gas Boiler 15.3 kw 94% 5 years £971 VIEW
Worcester Bosch Greenstar 18i System Gas Boiler 18.4 kw 94% 5 years £1,024 VIEW
Worcester Bosch Greenstar 21i System Gas Boiler 21.6 kw 94% 5 years £1,034 VIEW

Available

Worcester Bosch Greenstar 27i System Gas Boiler 27kw 92% 5 years £1,067 VIEW
Worcester Bosch Greenstar 30i System Gas Boiler 30kw 92% 5 years £1,114 VIEW
Worcester Bosch GB162 50kW System Gas Boiler 49.9 kw 93% 2 years £2,209 VIEW
Worcester Bosch GB162 65kW System Gas Boiler 69.5 kw 93% 2 years £2,646 VIEW
Worcester Bosch Greenstar 8000 Style 30kW System Gas Boiler 30kw 94% 5 years £1,317 VIEW
Worcester Bosch Greenstar 8000 Style 35kW System Gas boiler 35kw 94% 5 years £1,446 VIEW
Worcester Bosch Greenstar 8000 Life 30kW System Gas Boiler 30kw 94% 5 years £1,236 VIEW
Worcester Bosch Greenstar 8000 Life 35kW System Gas Boiler 35kw 94% 5 years £1,357 VIEW
Worcester Bosch GB162 85kW System Gas Boiler 84.5 kw N/a 2 years £3,509 VIEW
Worcester Bosch GB162 100kW System Gas Boiler 99.5 kw N/a 2 years £3,837 VIEW
Worcester Bosch Greenstar Danesmoor 12/18 System Oil Boiler 18 kw 90% 2 years £1,760 VIEW
Worcester Bosch Greenstar Danesmoor 18/25 System Oil Boiler 25 kw 90% 2 years £1,893 VIEW
Worcester Bosch Greenstar Danesmoor 25/32 System Oil Boiler 32 kw 91% 2 years £2,212 VIEW
Worcester Bosch Greenstar Danesmoor Utility 12/18 System Oil Boiler 18 kw 90% 2 years £1,738 VIEW
Worcester Bosch Greenstar Danesmoor Utility 18/25 System Oil Boiler 25 kw 90% 2 years £1,820 VIEW
Worcester Bosch Greenstar Danesmoor Utility 25/32 System Oil Boiler 32 kw 91% 2 years £2,201 VIEW
Worcester Bosch Greenstar Danesmoor External 12/18 System Oil Boiler 18 kw 90% 2 years £2,143 VIEW
Worcester Bosch Greenstar Danesmoor External 18/25 System Oil Boiler 25 kw 90% 2 years £2,297 VIEW
Worcester Bosch Greenstar Danesmoor External 25/32 System Oil Boiler 32 kw 91% 2 years £2,657 VIEW

Discontinued

Worcester Bosch Camray Utility 32 System Oil Boiler 32kw 94.2 5 years £2,030 VIEW
Worcester Bosch Camray Utility 25 System Oil Boiler 25kw 93.2 5 years £1,608 VIEW
Worcester Bosch Greenstar 30CDi Classic System Gas Boiler 30 kw 92% 7 years £1,155 VIEW
Worcester Bosch Greenstar 35CDi Classic System Gas Boiler 35kw 92% 7 years £1,187 VIEW

Zanussi

Boiler Model kW Efficiency Warranty Typical Price
Zanussi Ultra System 15kW Gas Boiler 15 kw 93% 2 years £N/A VIEW
Zanussi Ultra System 18kW Gas Boiler 18kw 92% 2 years £N/A VIEW
Zanussi Ultra System 24kW Gas Boiler 24.2 kw 93% 2 years £N/A VIEW
Zanussi Ultra System 30kW Gas Boiler 30.3 kw 93% 2 - 10 years £N/A VIEW

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Excellent 4.7 out of 5

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