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Glow-worm - Boiler Efficiency Ratings

Boiler Efficiency Rating

You can check your boilers rating by selecting it's make and model below. Ratings are based on the SEDBUK Rating which is an indicator of its efficiency when used within an average domestic household, it's a great benchmark for comparing new boilers and also assessing whether your current boiler would be better off being replaced due to low efficiencies.

For new boiler installations call British Gas Boilers on 0800 327 7119 for a no-obligation quote, alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.

Glow-worm Boilers

ModelTypeFuelEfficiencyMore Info
Glow-worm 105-120 105-120 Non-Condensing Gas 65% More Info
Glow-worm 105-120B 105-120B Non-Condensing Gas 65% More Info
Glow-worm 12hxi Condensing Gas 90.5% More Info
Glow-worm 15hxi Condensing Gas 90.5% More Info
Glow-worm 18hxi Condensing Gas 90.4% More Info
Glow-worm 18sxi Condensing Gas 90.4% More Info
Glow-worm 23c Non-Condensing Gas 79.9% More Info
Glow-worm 240 Non-Condensing Gas 65% More Info
Glow-worm 246 Non-Condensing Gas 65% More Info
Glow-worm 24ci Non-Condensing Gas 78.3% More Info
Glow-worm 24ci Plus Non-Condensing Gas 78.3% More Info
Glow-worm 24cxi Condensing Gas 90.3% More Info
Glow-worm 24hxi Condensing Gas 90.5% More Info
Glow-worm 30 ci Non-Condensing Gas 79.6% More Info
Glow-worm 30 si Non-Condensing Gas 79.7% More Info
Glow-worm 30ci Plus Non-Condensing Gas 79.6% More Info
Glow-worm 30cxi Condensing Gas 90.3% More Info
Glow-worm 30cxi Condensing LPG 92.2% More Info
Glow-worm 30hxi Condensing Gas 90.6% More Info
Glow-worm 30hxi Condensing LPG 92.2% More Info
Glow-worm 30sxi Condensing Gas 90.6% More Info
Glow-worm 30sxi Condensing LPG 92.2% More Info
Glow-worm 35ci Non-Condensing Gas 78.6% More Info
Glow-worm 38cxi Condensing Gas 90.4% More Info
Glow-worm 38hxi Condensing Gas 90.8% More Info
Glow-worm 45 Non-Condensing Gas 65% More Info
Glow-worm 45-60 45-60 Non-Condensing Gas 65% More Info
Glow-worm 45-60B 45-60B Non-Condensing Gas 65% More Info
Glow-worm 45/2 BBU Non-Condensing Gas 68.4% More Info
Glow-worm 45/4 BBU Non-Condensing Gas 78.4% More Info
Glow-worm 45F Non-Condensing Gas 65% More Info
Glow-worm 45FR Non-Condensing Gas 65% More Info
Glow-worm 54/4 BBU Non-Condensing Gas 78.9% More Info
Glow-worm 56 Non-Condensing Gas 65% More Info
Glow-worm 56/2 BBU Non-Condensing Gas 68.1% More Info
Glow-worm 56/3e BBU Non-Condensing Gas 78.5% More Info
Glow-worm 56/3pp BBU Non-Condensing Gas 74.5% More Info
Glow-worm 56F Non-Condensing Gas 65% More Info
Glow-worm 56FR Non-Condensing Gas 65% More Info
Glow-worm 65-80 65-80 Non-Condensing Gas 65% More Info
Glow-worm 65-80B 65-80B Non-Condensing Gas 65% More Info
Glow-worm 85-100 85-100 Non-Condensing Gas 65% More Info
Glow-worm 85-100B 85-100B Non-Condensing Gas 65% More Info
Glow-worm BBU 45/4 Chatsworth 4 Non-Condensing Gas 79.5% More Info
Glow-worm BBU 45/4 Dovedale 4 Non-Condensing Gas 79.5% More Info
Glow-worm BBU 45/4 Firelite 4 Non-Condensing Gas 78.4% More Info
Glow-worm BBU 45/4 Contour 4 Non-Condensing Gas 78.4% More Info
Glow-worm BBU 45/4 Heartbeat 4 Non-Condensing Gas 78.4% More Info
Glow-worm BBU 45/4 Miami 4 Non-Condensing Gas 78.4% More Info
Glow-worm BBU 45/4 Black Beauty 4 Non-Condensing Gas 78.4% More Info
Glow-worm BBU 54/4 Chatsworth 4 Non-Condensing Gas 79.4% More Info
Glow-worm BBU 54/4 Dovedale 4 Non-Condensing Gas 79.4% More Info
Glow-worm BBU 54/4 Heartbeat 4 Non-Condensing Gas 78.8% More Info
Glow-worm BBU 54/4 Black Beauty 4 Non-Condensing Gas 78.8% More Info
Glow-worm BBU 54/4 Contour 4 Non-Condensing Gas 78.8% More Info
Glow-worm BBU 54/4 Firelite 4 Non-Condensing Gas 78.8% More Info
Glow-worm BBU 54/4 Miami 4 Non-Condensing Gas 78.8% More Info
Glow-worm Betacom 24 Condensing Gas 86.7% More Info
Glow-worm Betacom 24a Condensing Gas 90.0% More Info
Glow-worm Betacom 24a Condensing LPG 91.7% More Info
Glow-worm Betacom 24c Condensing Gas 86.0% More Info
Glow-worm Betacom 24c Condensing LPG 87.0% More Info
Glow-worm Betacom 28a Condensing Gas 90.1% More Info
Glow-worm Betacom 28a Condensing LPG 92.1% More Info
Glow-worm Betacom 30 Condensing Gas 87.1% More Info
Glow-worm Betacom 30c Condensing Gas 86.4% More Info
Glow-worm Betacom 30c Condensing LPG 87.3% More Info
Glow-worm Betacom2 24 Condensing Gas 90% More Info
Glow-worm Betacom2 24 Condensing LPG 91.7% More Info
Glow-worm Betacom2 28 Condensing Gas 89.8% More Info
Glow-worm Betacom2 28 Condensing LPG 91.0% More Info
Glow-worm Camelot 240/6 Non-Condensing Gas 65% More Info
Glow-worm Capricorn 246 Non-Condensing Gas 65% More Info
Glow-worm Capricorn 240/6 Non-Condensing Gas 65% More Info
Glow-worm Compact 100 System A Non-Condensing Gas 79.3% More Info
Glow-worm Compact 100e Non-Condensing Gas 78.2% More Info
Glow-worm Compact 100e A Non-Condensing Gas 79.2% More Info
Glow-worm Compact 100p Non-Condensing Gas 71.6% More Info
Glow-worm Compact 60 System A Non-Condensing Gas 79.5% More Info
Glow-worm Compact 75e Non-Condensing Gas 77.5% More Info
Glow-worm Compact 75p Non-Condensing Gas 72.1% More Info
Glow-worm Compact 80e Non-Condensing Gas 77.8% More Info
Glow-worm Compact 80e A Non-Condensing Gas 79.5% More Info
Glow-worm Compact 80p Non-Condensing Gas 72.2% More Info
Glow-worm Easicom 24 Condensing Gas 90.0% More Info
Glow-worm Easicom 24 Condensing LPG 91.7% More Info
Glow-worm Easicom 28 Condensing Gas 89.8% More Info
Glow-worm Easicom 28 Condensing LPG 91.0% More Info
Glow-worm Economy Plus 75B Non-Condensing Gas 65% More Info
Glow-worm Economy Plus 100f Non-Condensing Gas 72% More Info
Glow-worm Economy Plus 24B Non-Condensing Gas 75.1% More Info
Glow-worm Economy Plus 24F Non-Condensing Gas 77.2% More Info
Glow-worm Economy Plus 30B Non-Condensing Gas 71.3% More Info
Glow-worm Economy Plus 30C Non-Condensing Gas 72.4% More Info
Glow-worm Economy Plus 30F Non-Condensing Gas 75.7% More Info
Glow-worm Economy Plus 40B Non-Condensing Gas 71.9% More Info
Glow-worm Economy Plus 40C Non-Condensing Gas 71.9% More Info
Glow-worm Economy Plus 40F Non-Condensing Gas 77.0% More Info
Glow-worm Economy Plus 50B Non-Condensing Gas 73.1% More Info
Glow-worm Economy Plus 50C Non-Condensing Gas 72.4% More Info
Glow-worm Economy Plus 50F Non-Condensing Gas 76.3% More Info
Glow-worm Economy Plus 60B Non-Condensing Gas 75.4% More Info
Glow-worm Economy Plus 60C Non-Condensing Gas 73.8% More Info
Glow-worm Economy Plus 60F Non-Condensing Gas 75.8% More Info
Glow-worm Economy Plus 80F Non-Condensing Gas 77.6% More Info
Glow-worm Energysaver 30 Condensing Gas 86.6% More Info
Glow-worm Energysaver 30e Condensing Gas 86.6% More Info
Glow-worm Energysaver 40 Condensing Gas 86.7% More Info
Glow-worm Energysaver 40e Condensing Gas 86.7% More Info
Glow-worm Energysaver 40P Condensing LPG 86.7% More Info
Glow-worm Energysaver 50 Condensing Gas 86.8% More Info
Glow-worm Energysaver 50e Condensing Gas 86.8% More Info
Glow-worm Energysaver 50P Condensing LPG 86.8% More Info
Glow-worm Energysaver 60 Condensing Gas 86.9% More Info
Glow-worm Energysaver 60e Condensing Gas 86.9% More Info
Glow-worm Energysaver 60P Condensing LPG 86.8% More Info
Glow-worm Energysaver 70 Condensing Gas 87.9% More Info
Glow-worm Energysaver 80 Condensing Gas 87.9% More Info
Glow-worm Energysaver 80P Condensing LPG 88.0% More Info
Glow-worm Energysaver Combi 100 Condensing Gas 90.4% More Info
Glow-worm Energysaver Combi 80 Condensing Gas 90.6% More Info
Glow-worm Flexicom 12hx Condensing Gas 90.7% More Info
Glow-worm Flexicom 15hx Condensing Gas 90.5% More Info
Glow-worm Flexicom 18hx Condensing Gas 90.4% More Info
Glow-worm Flexicom 18sx Condensing Gas 90.3% More Info
Glow-worm Flexicom 24cx Condensing Gas 90.3% More Info
Glow-worm Flexicom 24hx Condensing Gas 90.3% More Info
Glow-worm Flexicom 30cx Condensing Gas 90.0% More Info
Glow-worm Flexicom 30hx Condensing Gas 90.0% More Info
Glow-worm Flexicom 30sx Condensing Gas 90.1% More Info
Glow-worm Flexicom 35cx Condensing Gas 90.2% More Info
Glow-worm Flexicom 35hx Condensing Gas 90.3% More Info
Glow-worm Fuelsaver 30-40B Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 40-50b Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 25-30 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 30-40 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 25-30B Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 60-70b Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 55-60b Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 40-50 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 40mk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 40bmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 30mk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 30bmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 60bmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 50bmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 60mk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 75bmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 50mk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 75mk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 45f Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver 80f Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver 35f Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver 65f Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver 55f Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver 50brmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 60brmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 75brmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 40brmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 30brmk2 Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver 100F Non-Condensing Gas 72% More Info
Glow-worm Fuelsaver Complheat 30 Non-Condensing Gas 76.5% More Info
Glow-worm Fuelsaver Complheat 40 Non-Condensing Gas 76.7% More Info
Glow-worm Fuelsaver Complheat 55 Non-Condensing Gas 76.4% More Info
Glow-worm Fuelsaver Complheat 65 Non-Condensing Gas 79.1% More Info
Glow-worm Fuelsaver Complheat 80 Non-Condensing Gas 79.0% More Info
Glow-worm Fuelsaver Economy Plus 24F Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver Economy Plus 40F Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver Economy Plus 80F Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver Economy Plus 50F Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver Economy Plus 60F Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver Economy Plus 30F Non-Condensing Gas 68% More Info
Glow-worm Fuelsaver Economy Plus 60C Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver Economy Plus 30B Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver Economy Plus 40C Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver Economy Plus 24B Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver Economy Plus 50C Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver Economy Plus 40B Non-Condensing Gas 65% More Info
Glow-worm Fuelsaver Economy Plus 60B Non-Condensing Gas 65% More Info
Glow-worm Galaxie 246 Non-Condensing Gas 65% More Info
Glow-worm Galaxie 240/6 Non-Condensing Gas 65% More Info
Glow-worm Hideaway 60BL Non-Condensing Gas 65% More Info
Glow-worm Hideaway 80L Non-Condensing Gas 65% More Info
Glow-worm Hideaway 80BL Non-Condensing Gas 65% More Info
Glow-worm Hideaway 60L Non-Condensing Gas 65% More Info
Glow-worm Hideaway 90of Non-Condensing Gas 65% More Info
Glow-worm Hideaway 70of Non-Condensing Gas 65% More Info
Glow-worm Hideaway 100 Non-Condensing Gas 72.1% More Info
Glow-worm Hideaway 100B Non-Condensing Gas 73.0% More Info
Glow-worm Hideaway 100BFF Non-Condensing Gas 79.9% More Info
Glow-worm Hideaway 100CFF Non-Condensing Gas 79.9% More Info
Glow-worm Hideaway 115BFF Non-Condensing Gas 78.7% More Info
Glow-worm Hideaway 115CFF Non-Condensing Gas 78.7% More Info
Glow-worm Hideaway 120 Non-Condensing Gas 73.0% More Info
Glow-worm Hideaway 120B Non-Condensing Gas 72.0% More Info
Glow-worm Hideaway 40 Non-Condensing Gas 70.8% More Info
Glow-worm Hideaway 40B Non-Condensing Gas 71.5% More Info
Glow-worm Hideaway 40BFF Non-Condensing Gas 78.3% More Info
Glow-worm Hideaway 40CFF Non-Condensing Gas 78.3% More Info
Glow-worm Hideaway 50 Non-Condensing Gas 71.0% More Info
Glow-worm Hideaway 50B Non-Condensing Gas 71.4% More Info
Glow-worm Hideaway 50BFF Non-Condensing Gas 78.2% More Info
Glow-worm Hideaway 50CFF Non-Condensing Gas 78.2% More Info
Glow-worm Hideaway 60 Non-Condensing Gas 71.3% More Info
Glow-worm Hideaway 60B Non-Condensing Gas 71.7% More Info
Glow-worm Hideaway 60BFF Non-Condensing Gas 78.5% More Info
Glow-worm Hideaway 60CFF Non-Condensing Gas 78.5% More Info
Glow-worm Hideaway 70 Non-Condensing Gas 71.8% More Info
Glow-worm Hideaway 70B Non-Condensing Gas 72.5% More Info
Glow-worm Hideaway 80 Non-Condensing Gas 71.7% More Info
Glow-worm Hideaway 80B Non-Condensing Gas 72.6% More Info
Glow-worm Hideaway 80BFF Non-Condensing Gas 78.4% More Info
Glow-worm Hideaway 80CFF Non-Condensing Gas 78.4% More Info
Glow-worm Hideaway 90 Non-Condensing Gas 71.7% More Info
Glow-worm Hideaway 90B Non-Condensing Gas 72.8% More Info
Glow-worm Inset BBU 40 Non-Condensing Gas 75.5% More Info
Glow-worm Inset BBU 50 Non-Condensing Gas 77.6% More Info
Glow-worm Majorca 346 Non-Condensing Gas 65% More Info
Glow-worm Majorca 246 Non-Condensing Gas 65% More Info
Glow-worm Majorca 240/6 Non-Condensing Gas 65% More Info
Glow-worm Majorca 340/6auto Non-Condensing Gas 65% More Info
Glow-worm Majorca 340/6 Non-Condensing Gas 65% More Info
Glow-worm Micron 100FF Non-Condensing Gas 79.5% More Info
Glow-worm Micron 120FF Non-Condensing Gas 78.1% More Info
Glow-worm Micron 30 FF Non-Condensing Gas 78.3% More Info
Glow-worm Micron 30FF Non-Condensing Gas 76.6% More Info
Glow-worm Micron 40 FF Non-Condensing Gas 78.7% More Info
Glow-worm Micron 40FF Non-Condensing Gas 77.3% More Info
Glow-worm Micron 50FF Non-Condensing Gas 78.9% More Info
Glow-worm Micron 60 FF Non-Condensing Gas 78.8% More Info
Glow-worm Micron 60FF Non-Condensing Gas 77.2% More Info
Glow-worm Micron 70 FF Non-Condensing Gas 78.3% More Info
Glow-worm Micron 70FF Non-Condensing Gas 77.4% More Info
Glow-worm Micron 80 FF Non-Condensing Gas 78.3% More Info
Glow-worm Micron 80FF Non-Condensing Gas 77.2% More Info
Glow-worm Micron100FF Non-Condensing Gas 77.5% More Info
Glow-worm Royale 246 Non-Condensing Gas 65% More Info
Glow-worm Royale 240/6 Non-Condensing Gas 65% More Info
Glow-worm Saunier Duval SB30e A Non-Condensing Gas 79.3% More Info
Glow-worm Saunier Duval SD30e A Non-Condensing Gas 79.2% More Info
Glow-worm Spacesaver 50bf Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 38bf Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 22-30b Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 52 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 75bf Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 38 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 45-60 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 45-60b Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 22-30f Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 60f Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 40f Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 30bmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 30mk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 30brmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 40bmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 80bmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 60mk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 60bmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 50mk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 50bmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 40mk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 50f Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 30-40f Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 40-50rf Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 20-30f Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 20-30rfs Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 20-30rf Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 30-40rf Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 50-60rfs Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 40-50rfs Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 30-40rfs Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 50-60rf Non-Condensing Gas 68% More Info
Glow-worm Spacesaver 60brmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 80brmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 75 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 50rmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 40rmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 60rmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 30rmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 40brmk2 Non-Condensing Gas 65% More Info
Glow-worm Spacesaver 65-75f Non-Condensing Gas 68% More Info
Glow-worm Spacesaver Complheat 60 Non-Condensing Gas 72% More Info
Glow-worm Spacesaver Complheat 70 Non-Condensing Gas 72% More Info
Glow-worm Spacesaver Kfb 60 Non-Condensing Gas 68% More Info
Glow-worm Spacesaver Kfb 70 Non-Condensing Gas 68% More Info
Glow-worm Spacesaver Kfb 20 Non-Condensing Gas 68% More Info
Glow-worm Suburban Suburban Non-Condensing Gas 65% More Info
Glow-worm Super 40b Non-Condensing Gas 65% More Info
Glow-worm Super 40 Non-Condensing Gas 65% More Info
Glow-worm Super 30b Non-Condensing Gas 65% More Info
Glow-worm Super 30 Non-Condensing Gas 65% More Info
Glow-worm Super 52b Non-Condensing Gas 65% More Info
Glow-worm Super 52 Non-Condensing Gas 65% More Info
Glow-worm Swiftflow 100 Non-Condensing Gas 70% More Info
Glow-worm Swiftflow 75 Non-Condensing Gas 70% More Info
Glow-worm Swiftflow 80 Non-Condensing Gas 70% More Info
Glow-worm Swiftflow 100 Honeywell valve Non-Condensing Gas 70.7% More Info
Glow-worm Swiftflow 100 SIT valve Non-Condensing Gas 70.7% More Info
Glow-worm Swiftflow 100e Non-Condensing Gas 76.6% More Info
Glow-worm Swiftflow 120 Non-Condensing Gas 73.1% More Info
Glow-worm Swiftflow 125e Non-Condensing Gas 79.4% More Info
Glow-worm Swiftflow 75 Honeywell valve Non-Condensing Gas 71.4% More Info
Glow-worm Swiftflow 75 SIT valve Non-Condensing Gas 71.4% More Info
Glow-worm Swiftflow 75e Non-Condensing Gas 76.5% More Info
Glow-worm Swiftflow 80 SIT valve Non-Condensing Gas 73.1% More Info
Glow-worm Swiftflow 80 Honeywell valve Non-Condensing Gas 73.1% More Info
Glow-worm Swiftflow 80e Non-Condensing Gas 76.6% More Info
Glow-worm Ultimate 80bf Non-Condensing Gas 65% More Info
Glow-worm Ultimate 24h Condensing Gas 90.3% More Info
Glow-worm Ultimate 35c Condensing Gas 89.9% More Info
Glow-worm Ultimate 35c Condensing LPG 91.5% More Info
Glow-worm Ultimate 100 FF Non-Condensing Gas 79.5% More Info
Glow-worm Ultimate 100FF Non-Condensing Gas 77.5% More Info
Glow-worm Ultimate 120FF Non-Condensing Gas 78.1% More Info
Glow-worm Ultimate 30BF Non-Condensing Gas 73.0% More Info
Glow-worm Ultimate 30c Condensing Gas 89.8% More Info
Glow-worm Ultimate 30c Condensing LPG 91.5% More Info
Glow-worm Ultimate 30FF Non-Condensing Gas 79.7% More Info
Glow-worm Ultimate 30FF/LP Non-Condensing LPG 78.0% More Info
Glow-worm Ultimate 40 FF Non-Condensing Gas 78.7% More Info
Glow-worm Ultimate 40BF Non-Condensing Gas 72.1% More Info
Glow-worm Ultimate 40FF Non-Condensing Gas 75.4% More Info
Glow-worm Ultimate 40FF/LP Non-Condensing LPG 78.0% More Info
Glow-worm Ultimate 50 FF Non-Condensing Gas 78.8% More Info
Glow-worm Ultimate 50BF Non-Condensing Gas 73.1% More Info
Glow-worm Ultimate 50BF/LP Non-Condensing LPG 74.8% More Info
Glow-worm Ultimate 50FF Non-Condensing Gas 76.0% More Info
Glow-worm Ultimate 50FF/LP Non-Condensing LPG 80.1% More Info
Glow-worm Ultimate 60 FF Non-Condensing Gas 79.4% More Info
Glow-worm Ultimate 60BF Non-Condensing Gas 75.6% More Info
Glow-worm Ultimate 60FF Non-Condensing Gas 76.6% More Info
Glow-worm Ultimate 60FF/LP Non-Condensing LPG 77.5% More Info
Glow-worm Ultimate 70 FF Non-Condensing Gas 79.3% More Info
Glow-worm Ultimate 70FF Non-Condensing Gas 77.1% More Info
Glow-worm Ultimate 80 FF Non-Condensing Gas 79.4% More Info
Glow-worm Ultimate 80FF Non-Condensing Gas 76.3% More Info
Glow-worm Ultimate 80FF/LP Non-Condensing LPG 79.8% More Info
Glow-worm Ultracom 12hxi Condensing Gas 90.5% More Info
Glow-worm Ultracom 12hxi Condensing LPG 91.6% More Info
Glow-worm Ultracom 15hxi Condensing Gas 90.5% More Info
Glow-worm Ultracom 15hxi Condensing LPG 91.6% More Info
Glow-worm Ultracom 18hxi Condensing Gas 90.4% More Info
Glow-worm Ultracom 18hxi Condensing LPG 91.5% More Info
Glow-worm Ultracom 18sxi Condensing Gas 90.4% More Info
Glow-worm Ultracom 18sxi Condensing LPG 91.5% More Info
Glow-worm Ultracom 2 12sxi Condensing Gas 90.4% More Info
Glow-worm Ultracom 2 18sxi Condensing Gas 90.4% More Info
Glow-worm Ultracom 2 18sxi Condensing LPG 92.1% More Info
Glow-worm Ultracom 2 24cxi Condensing Gas 90.3% More Info
Glow-worm Ultracom 2 24cxi Condensing LPG 92.0% More Info
Glow-worm Ultracom 2 30cxi Condensing Gas 90.3% More Info
Glow-worm Ultracom 2 30cxi Condensing LPG 92.4% More Info
Glow-worm Ultracom 2 30sxi Condensing Gas 90.5% More Info
Glow-worm Ultracom 2 30sxi Condensing LPG 92.5% More Info
Glow-worm Ultracom 2 35 Store Condensing Gas 90.6% More Info
Glow-worm Ultracom 2 35 Store Condensing LPG 92.4% More Info
Glow-worm Ultracom 2 35cxi Condensing Gas 90.4% More Info
Glow-worm Ultracom 2 35cxi Condensing LPG 92.4% More Info
Glow-worm Ultracom 24cx Condensing Gas 90.3% More Info
Glow-worm Ultracom 24cx Condensing LPG 91.4% More Info
Glow-worm Ultracom 24cxi Condensing Gas 90.3% More Info
Glow-worm Ultracom 24cxi Condensing LPG 91.4% More Info
Glow-worm Ultracom 24hxi Condensing Gas 90.5% More Info
Glow-worm Ultracom 24hxi Condensing LPG 91.9% More Info
Glow-worm Ultracom 30cx Condensing Gas 90.3% More Info
Glow-worm Ultracom 30cx Condensing LPG 92.2% More Info
Glow-worm Ultracom 30cxi Condensing Gas 90.3% More Info
Glow-worm Ultracom 30cxi Condensing LPG 92.2% More Info
Glow-worm Ultracom 30hxi Condensing Gas 90.6% More Info
Glow-worm Ultracom 30hxi Condensing LPG 92.2% More Info
Glow-worm Ultracom 30sxi Condensing Gas 90.6% More Info
Glow-worm Ultracom 30sxi Condensing LPG 92.2% More Info
Glow-worm Ultracom 38cxi Condensing Gas 90.4% More Info
Glow-worm Ultracom 38cxi Condensing LPG 91.5% More Info
Glow-worm Ultracom 38hxi Condensing Gas 90.8% More Info
Glow-worm Ultracom 38hxi Condensing LPG 92.4% More Info
Glow-worm Ultrapower 100 SXI Condensing Gas 91.5% More Info
Glow-worm Ultrapower 100 SXI Condensing LPG 92.7% More Info
Glow-worm Ultrapower 170 SXI Condensing Gas 91.5% More Info
Glow-worm Ultrapower 170 SXI Condensing LPG 92.7% More Info
Glow-worm Xtrafast 120 Non-Condensing Gas 78.6% More Info
Glow-worm Xtrafast 96 Non-Condensing Gas 79.4% More Info
Glow-worm Xtramax A Non-Condensing Gas 78.9% More Info
Glow-worm Xtramax HE Condensing Gas 90.6% More Info
Glow-worm Xtramax HE Condensing LPG 92.0% More Info