Not sure which boiler you need?
Not sure which boiler you need?

Heat Only Boilers

Heat only boilers, also known as regular or conventional boilers, are a trusted choice for homes that need a traditional heating system with strong hot water support. They work with a separate hot water cylinder and cold water storage tank, making them well suited to properties that already have this setup in place. For many larger or older homes, a heat only boiler can provide reliable heating performance and consistent hot water throughout the property.

Heat only boilers are especially suited to larger homes, older properties, and households with more than one bathroom or higher hot water demand. They are often the ideal option where replacing an existing regular boiler, helping reduce disruption and keeping installation straightforward. If your home benefits from a conventional heating layout and you want dependable performance for everyday family use, a heat only boiler can be a practical and efficient solution.

Recommended Boilers

Alpha E Tec 15R 15KW
  • Regular Gas Boiler
  • 15.1kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Alpha E Tec 20R 20KW
  • Regular Gas Boiler
  • 20.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Alpha E Tec 25R 25KW
  • Regular Gas Boiler
  • 26.1kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Baxi 816 16KW
  • Regular Gas Boiler
  • 16kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Baxi 825 Heat 25KW
  • Regular Gas Boiler
  • 25kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Baxi 830 Heat 30KW
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Glow Worm Glow Worm Easicom₃ 25KW
  • Regular Gas Boiler
  • 25kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Glow Worm Glow Worm Energy Regular 12KW Gas Boiler
  • Regular Gas Boiler
  • 12kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 10 years
 Glow Worm Glow Worm Energy Regular 15KW Gas Boiler
  • Regular Gas Boiler
  • 15kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 10 years
 Glow Worm Glow Worm Energy Regular 18KW Gas Boiler
  • Regular Gas Boiler
  • 18kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 10 years
 Glow Worm Glow Worm Energy Regular 25KW Gas Boiler
  • Regular Gas Boiler
  • 25kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 10 years
 Glow Worm Glow Worm Energy Regular 30KW Gas Boiler
  • Regular Gas Boiler
  • 30kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Max Heat H12
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Max Heat H15
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Max Heat H18
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Max Heat H24
  • Regular Gas Boiler
  • 24.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Max Heat H30
  • Regular Gas Boiler
  • 30.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Plus Heat H12
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Plus Heat H15
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Plus Heat H18
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Plus Heat H24
  • Regular Gas Boiler
  • 24.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic Plus Heat H30
  • Regular Gas Boiler
  • 30.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecofit Pure 412
  • Regular Gas Boiler
  • 12.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecofit Pure 415
  • Regular Gas Boiler
  • 15.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecofit Pure 418
  • Regular Gas Boiler
  • 18.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecofit Pure 425
  • Regular Gas Boiler
  • 25.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecofit Pure 430
  • Regular Gas Boiler
  • 30.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecofit Pure 435
  • Regular Gas Boiler
  • 34.8kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecotec Plus 412
  • Regular Gas Boiler
  • 12.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecotec Plus 415
  • Regular Gas Boiler
  • 15.1kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecotec Plus 418
  • Regular Gas Boiler
  • 18.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecotec Plus 424
  • Regular Gas Boiler
  • 24.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecotec Plus 430
  • Regular Gas Boiler
  • 30.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Vaillant Ecotec Plus 435
  • Regular Gas Boiler
  • 35.1kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W B1GA 11KW
  • Regular Gas Boiler
  • 11kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W B1GA 16KW
  • Regular Gas Boiler
  • 16kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W B1GA 19KW
  • Regular Gas Boiler
  • 19kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W B1GA 25KW
  • Regular Gas Boiler
  • 25kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W B1GA 32KW
  • Regular Gas Boiler
  • 32kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 12RI
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 18RI
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 21RI
  • Regular Gas Boiler
  • 21kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 24RI
  • Regular Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 27RI
  • Regular Gas Boiler
  • 27kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 30RI
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 8000+ 30KW
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Worcester Bosch Greenstar 8000+ 35KW
  • Regular Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Worcester Bosch Greenstar 8000+ 40KW
  • Regular Gas Boiler
  • 40kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Worcester Bosch Greenstar 8000+ 45KW
  • Regular Gas Boiler
  • 45kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years
 Worcester Bosch Greenstar 8000+ 50KW
  • Regular Gas Boiler
  • 50kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 12 years

Other Boilers

Alpha CD13R
  • Regular Gas Boiler
  • 13kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 3 years
 Alpha CD18R
  • Regular Gas Boiler
  • 18kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 3 years
 Alpha CD24R
  • Regular Gas Boiler
  • 24kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 3 years
 Baxi 212 Heat 12KW
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 3 years
 Baxi 215 Heat 15KW
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 3 years
 Baxi 218 Heat 18KW
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 3 years
 Baxi 224 Heat 24KW
  • Regular Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 3 years
 Baxi 230 Heat 30KW
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 3 years
 Baxi 412 Heat 12KW
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Baxi 415 Heat 15KW
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Baxi 418 Heat 18KW
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Baxi 424 Heat 24KW
  • Regular Gas Boiler
  • 24kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Baxi 430 Heat 30KW
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Baxi 613 13KW
  • Regular Gas Boiler
  • 13kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Baxi 616 16KW
  • Regular Gas Boiler
  • 16kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Baxi 619 19KW
  • Regular Gas Boiler
  • 19kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Baxi 625 25KW
  • Regular Gas Boiler
  • 25kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Baxi 630 Heat 30KW
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Baxi 816 Heat 16KW
  • Regular Gas Boiler
  • 16kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Baxi Ecoblue Advance Heat 13
  • Regular Gas Boiler
  • 13kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 7 years
 Baxi Ecoblue Advance Heat 16
  • Regular Gas Boiler
  • 16kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 7 years
 Baxi Ecoblue Advance Heat 19
  • Regular Gas Boiler
  • 19kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 7 years
 Baxi Ecoblue Advance Heat 25
  • Regular Gas Boiler
  • 25kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 7 years
 Baxi Ecoblue Advance Heat 30
  • Regular Gas Boiler
  • 30kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 7 years
 Baxi Ecoblue Heat 12
  • Regular Gas Boiler
  • 12kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Baxi Ecoblue Heat 15
  • Regular Gas Boiler
  • 15kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Baxi Ecoblue Heat 18
  • Regular Gas Boiler
  • 18kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Baxi Ecoblue Heat 21
  • Regular Gas Boiler
  • 21kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Baxi Ecoblue Heat 24
  • Regular Gas Boiler
  • 24kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Baxi Solo 15 He A
  • Regular Gas Boiler
  • 15kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Glow Worm Glow Worm Flexicom Hx 24KW
  • Regular Gas Boiler
  • 24kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 5 years
 Glow Worm Glow Worm ULTIMATE2 Regular 25KW
  • Regular Gas Boiler
  • 25kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 5 years
 Glow Worm Glow Worm ULTIMATE3 25KW
  • Regular Gas Boiler
  • 25kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 5 years
 Glow Worm Glow Worm Ultracom 24 Hxi
  • Regular Gas Boiler
  • 30kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 5 years
 Ideal Logic Heat H12
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Logic Heat H15
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Logic Heat H18
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Logic Heat H24
  • Regular Gas Boiler
  • 24.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Logic Heat H30
  • Regular Gas Boiler
  • 30.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Logic² Max Heat 12KW
  • Regular Gas Boiler
  • 12kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic² Max Heat 15KW
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic² Max Heat 18KW
  • Regular Gas Boiler
  • 18kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic² Max Heat 24KW
  • Regular Gas Boiler
  • 25.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Logic² Max Heat 30KW
  • Regular Gas Boiler
  • 31kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ideal Mexico He Mex 15
  • Regular Gas Boiler
  • 14.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Mexico He Mex 18
  • Regular Gas Boiler
  • 18.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Mexico He Mex 24
  • Regular Gas Boiler
  • 23.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Mexico He Mex 30
  • Regular Gas Boiler
  • 30.1kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ideal Mexico He Mex 36
  • Regular Gas Boiler
  • 37kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Vaillant Home 12KW
  • Regular Gas Boiler
  • 12kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Vaillant Home 15KW
  • Regular Gas Boiler
  • 15kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Vaillant Home 18KW
  • Regular Gas Boiler
  • 18kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Vaillant Home 25KW
  • Regular Gas Boiler
  • 25kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Vaillant Home 30KW
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Viessmann Vitodens 100 W Compact WB1B 13KW
  • Regular Gas Boiler
  • 13kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W Compact WB1B 16KW
  • Regular Gas Boiler
  • 16kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W Compact WB1B 19KW
  • Regular Gas Boiler
  • 19kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W Compact WB1B 26KW
  • Regular Gas Boiler
  • 26kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Viessmann Vitodens 100 W Compact WB1B 35KW
  • Regular Gas Boiler
  • 35kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 15RI
  • Regular Gas Boiler
  • 15kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Worcester Bosch Greenstar 30CDI Classic
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Worcester Bosch Greenstar 40CDI Classic
  • Regular Gas Boiler
  • 40kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Worcester Bosch Greenstar Fs 30CDI
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years
 Worcester Bosch Greenstar Fs 42CDI
  • Regular Gas Boiler
  • 41kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 7 years

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