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System Boilers

Shop high-performance system boilers at Toolstation, with products available from trusted brands like Ideal Boilers, Viessmann, Vaillant and Vokera.... 
Shop high-performance system boilers at Toolstation, with products available from trusted brands like Ideal Boilers, Viessmann, Vaillant and Vokera. We stock system boilers in various sizes, configurations and kilowatt ratings to suit any home or workplace.

What Are the Benefits of a System Boiler?

System boilers are ideal for larger homes with higher demand for hot water. Unlike regular boilers and combi boilers that heat hot water as required, a system boiler benefits from a constant supply of hot water stored in a cylinder. However, the hot water supply runs out faster when multiple radiators, taps or showers are used, and it can take 30-40 minutes for a system boiler to heat more water. Overall, system boilers are reliable, efficient, and compatible with most central heating systems. Shop our full range of system boilers here, or check out our Boiler Buying Guide for more advice on how to find the right one for you.
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Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 8000+ System Boiler 30kW

Product code: AH970

Worcester Bosch Greenstar 8000+ System Boiler 30kW

£1988.00

ex. VAT £1656.67Each

VokeraVokeraVokera / Vokera Unica MAX System Boiler 30kW
Save£218

Product code: 27352

Vokera Unica MAX System Boiler 30kW

£989.99Was £1208.38

ex. VAT £824.99Each

VokeraVokeraVokera / Vokera Unica MAX System Boiler 20kW
Save£214
( 1 )

Product code: 73786

Vokera Unica MAX System Boiler 20kW

£914.84Was £1129.18

ex. VAT £762.37Each

VaillantVaillant / Vaillant ecoTEC Plus 635 System Boiler 35kW

Product code: AH907

Vaillant ecoTEC Plus 635 System Boiler 35kW

£2358.49

ex. VAT £1965.41Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System Boiler 12kW

Product code: AH994

Worcester Bosch Greenstar 4000 System Boiler 12kW

£1435.00

ex. VAT £1195.83Each

VaillantVaillant / Vaillant ecoTEC Plus 630 30kW System Boiler Only Power

Product code: 51926

Vaillant ecoTEC Plus 630 30kW System Boiler Only Power

£2213.99

ex. VAT £1844.99Each

VaillantVaillant / Vaillant ecoTEC Plus 615 System Boiler 15kW

Product code: AH913

Vaillant ecoTEC Plus 615 System Boiler 15kW

£1579.99

ex. VAT £1316.66Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 8000+ Regular LPG Boiler 40kW

Product code: AH964

Worcester Bosch Greenstar 8000+ Regular LPG Boiler 40kW

£2747.99

ex. VAT £2289.99Each

Worcester BoschWorcester Bosch / Worcester Bosch EasyControl CT 200 Black

Product code: AE567

Worcester Bosch EasyControl CT 200 Black

£204.48

ex. VAT £170.40Each

GlowwormGlowworm / Glowworm Energy System Boiler 30kW

Product code: AH916

Glowworm Energy System Boiler 30kW

£1456.99

ex. VAT £1214.16Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System Boiler 24kW

Product code: AH975

Worcester Bosch Greenstar 4000 System Boiler 24kW

£1726.99

ex. VAT £1439.16Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System Boiler 15kW

Product code: AH996

Worcester Bosch Greenstar 4000 System Boiler 15kW

£1505.49

ex. VAT £1254.57Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System LPG Boiler 24kW

Product code: AH971

Worcester Bosch Greenstar 4000 System LPG Boiler 24kW

£1816.49

ex. VAT £1513.74Each

Ideal BoilersIdeal Boilers / Ideal Logic Max System 2 Boiler 24kW

Product code: 89898

Ideal Logic Max System 2 Boiler 24kW

£1807.49

ex. VAT £1506.24Each

VaillantVaillant / Vaillant ecoTEC Plus 625 25kW System Boiler Only Power

Product code: 66570

Vaillant ecoTEC Plus 625 25kW System Boiler Only Power

£2044.49

ex. VAT £1703.74Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System Boiler 21kW

Product code: AH976

Worcester Bosch Greenstar 4000 System Boiler 21kW

£1673.99

ex. VAT £1394.99Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 8000+ System LPG Boiler 30kW

Product code: AH963

Worcester Bosch Greenstar 8000+ System LPG Boiler 30kW

£2052.99

ex. VAT £1710.82Each

VaillantVaillant / Vaillant ecoTEC Plus 620 System Boiler 20kW

Product code: AH915

Vaillant ecoTEC Plus 620 System Boiler 20kW

£1744.99

ex. VAT £1454.16Each

GlowwormGlowworm / Glow-worm Energy System Boiler 25kW

Product code: AH910

Glow-worm Energy System Boiler 25kW

£1389.99

ex. VAT £1158.32Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System LPG Boiler 12kW

Product code: AI002

Worcester Bosch Greenstar 4000 System LPG Boiler 12kW

£1521.49

ex. VAT £1267.91Each

Ideal BoilersIdeal Boilers / Ideal Logic Max System 2 Boiler 30kW

Product code: 62718

Ideal Logic Max System 2 Boiler 30kW

£1796.99

ex. VAT £1497.49Each

Ideal BoilersIdeal Boilers / Ideal Vogue Max System Boiler 32kW

Product code: 35273

Ideal Vogue Max System Boiler 32kW

£2004.99

ex. VAT £1670.82Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System LPG Boiler 18kW

Product code: AH980

Worcester Bosch Greenstar 4000 System LPG Boiler 18kW

£1675.99

ex. VAT £1396.66Each

GlowwormGlowworm / Glowworm Energy System Boiler 18kW

Product code: AH905

Glowworm Energy System Boiler 18kW

£1315.49

ex. VAT £1096.24Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System Boiler 18kW

Product code: AH974

Worcester Bosch Greenstar 4000 System Boiler 18kW

£1574.00

ex. VAT £1311.67Each

Ideal BoilersIdeal Boilers / Ideal Vogue Max System Boiler 26kW

Product code: 30489

Ideal Vogue Max System Boiler 26kW

£1900.99

ex. VAT £1584.16Each

Worcester BoschWorcester Bosch / Worcester Bosch Greenstar 4000 System LPG Boiler 15kW

Product code: AH973

Worcester Bosch Greenstar 4000 System LPG Boiler 15kW

£1603.49

ex. VAT £1336.24Each

GlowwormGlowworm / Glowworm Energy System Boiler 15kW

Product code: AH920

Glowworm Energy System Boiler 15kW

£1257.99

ex. VAT £1048.32Each