Ever since warming their first home in 1934, Glow-worm have become a popular choice for homeowners and have gained a great reputation with engineers thanks to their reliability, lengthy warranties and high efficiency.
Whether you're looking for a Combi, System or Regular boiler, Glow-worm have an extensive range of each that are able to meet the heating demands of just about any home.
| Model | Type | Fuel | Efficiency |
|---|---|---|---|
|
|
|||
| Glow-worm 105-120 105-120 | Non-Condensing | Gas | 65.0% |
| Glow-worm 105-120B 105-120B | Non-Condensing | Gas | 65.0% |
| Glow-worm 12hxi | Condensing | Gas | 88.7% |
| Glow-worm 15hxi | Condensing | Gas | 88.7% |
| Glow-worm 18hxi | Condensing | Gas | 88.6% |
| Glow-worm 18sxi | Condensing | Gas | 88.6% |
| Glow-worm 23c | Non-Condensing | Gas | 79.9% |
| Glow-worm 240 | Non-Condensing | Gas | 65.0% |
| Glow-worm 246 | Non-Condensing | Gas | 65.0% |
| Glow-worm 24ci | Non-Condensing | Gas | 78.3% |
| Glow-worm 24ci Plus | Non-Condensing | Gas | 78.3% |
| Glow-worm 24cxi | Condensing | Gas | 88.5% |
| Glow-worm 24hxi | Condensing | Gas | 88.9% |
| Glow-worm 30 ci | Non-Condensing | Gas | 79.6% |
| Glow-worm 30 si | Non-Condensing | Gas | 79.7% |
| Glow-worm 30ci Plus | Non-Condensing | Gas | 79.6% |
| Glow-worm 30cxi | Condensing | Gas | 88.5% |
| Glow-worm 30hxi | Condensing | Gas | 88.7% |
| Glow-worm 30sxi | Condensing | Gas | 88.7% |
| Glow-worm 35ci | Non-Condensing | Gas | 78.6% |
| Glow-worm 38cxi | Condensing | Gas | 88.5% |
| Glow-worm 38hxi | Condensing | Gas | 89.2% |
| Glow-worm 45 | Non-Condensing | Gas | 65.0% |
| Glow-worm 45-60 45-60 | Non-Condensing | Gas | 65.0% |
| Glow-worm 45-60B 45-60B | Non-Condensing | Gas | 65.0% |
| Glow-worm 45/2 BBU | Non-Condensing | Gas | 68.4% |
| Glow-worm 45/4 BBU | Non-Condensing | Gas | 78.4% |
| Glow-worm 45F | Non-Condensing | Gas | 65.0% |
| Glow-worm 45FR | Non-Condensing | Gas | 65.0% |
| Glow-worm 54/4 BBU | Non-Condensing | Gas | 78.9% |
| Glow-worm 56 | Non-Condensing | Gas | 65.0% |
| Glow-worm 56/2 BBU | Non-Condensing | Gas | 68.1% |
| Glow-worm 56/3e BBU | Non-Condensing | Gas | 78.5% |
| Glow-worm 56/3pp BBU | Non-Condensing | Gas | 74.5% |
| Glow-worm 56F | Non-Condensing | Gas | 65.0% |
| Glow-worm 56FR | Non-Condensing | Gas | 65.0% |
| Glow-worm 65-80 65-80 | Non-Condensing | Gas | 65.0% |
| Glow-worm 65-80B 65-80B | Non-Condensing | Gas | 65.0% |
| Glow-worm 85-100 85-100 | Non-Condensing | Gas | 65.0% |
| Glow-worm 85-100B 85-100B | Non-Condensing | Gas | 65.0% |
| Glow-worm BBU 45/4 Black Beauty 4 | Non-Condensing | Gas | 78.4% |
| Glow-worm BBU 45/4 Chatsworth 4 | Non-Condensing | Gas | 79.5% |
| Glow-worm BBU 45/4 Contour 4 | Non-Condensing | Gas | 78.4% |
| Glow-worm BBU 45/4 Dovedale 4 | Non-Condensing | Gas | 79.5% |
| Glow-worm BBU 45/4 Firelite 4 | Non-Condensing | Gas | 78.4% |
| Glow-worm BBU 45/4 Heartbeat 4 | Non-Condensing | Gas | 78.4% |
| Glow-worm BBU 45/4 Miami 4 | Non-Condensing | Gas | 78.4% |
| Glow-worm BBU 54/4 Black Beauty 4 | Non-Condensing | Gas | 78.8% |
| Glow-worm BBU 54/4 Chatsworth 4 | Non-Condensing | Gas | 79.4% |
| Glow-worm BBU 54/4 Contour 4 | Non-Condensing | Gas | 78.8% |
| Glow-worm BBU 54/4 Dovedale 4 | Non-Condensing | Gas | 79.4% |
| Glow-worm BBU 54/4 Firelite 4 | Non-Condensing | Gas | 78.8% |
| Glow-worm BBU 54/4 Heartbeat 4 | Non-Condensing | Gas | 78.8% |
| Glow-worm BBU 54/4 Miami 4 | Non-Condensing | Gas | 78.8% |
| Glow-worm Betacom 24 | Condensing | Gas | 85.9% |
| Glow-worm Betacom 24a | Condensing | Gas | 89.0% |
| Glow-worm Betacom 24c | Condensing | Gas | 85.6% |
| Glow-worm Betacom 28a | Condensing | Gas | 89.2% |
| Glow-worm Betacom 30 | Condensing | Gas | 86.2% |
| Glow-worm Betacom 30c | Condensing | Gas | 85.7% |
| Glow-worm BETACOM 4 30c-A (H-GB) | Condensing | Gas | 89.6% |
| Glow-worm Betacom2 24 | Condensing | Gas | 89.0% |
| Glow-worm Betacom2 28 | Condensing | Gas | 88.5% |
| Glow-worm Betacom3 24c | Condensing | Gas | 89.2% |
| Glow-worm Betacom3 30c | Condensing | Gas | 89.2% |
| Glow-worm Camelot 240/6 | Non-Condensing | Gas | 65.0% |
| Glow-worm Capricorn 240/6 | Non-Condensing | Gas | 65.0% |
| Glow-worm Capricorn 246 | Non-Condensing | Gas | 65.0% |
| Glow-worm Compact 100 System A | Non-Condensing | Gas | 79.3% |
| Glow-worm Compact 100e | Non-Condensing | Gas | 78.2% |
| Glow-worm Compact 100e A | Non-Condensing | Gas | 79.2% |
| Glow-worm Compact 100p | Non-Condensing | Gas | 71.6% |
| Glow-worm Compact 60 System A | Non-Condensing | Gas | 79.5% |
| Glow-worm Compact 75e | Non-Condensing | Gas | 77.5% |
| Glow-worm Compact 75p | Non-Condensing | Gas | 72.1% |
| Glow-worm Compact 80e | Non-Condensing | Gas | 77.8% |
| Glow-worm Compact 80e A | Non-Condensing | Gas | 79.5% |
| Glow-worm Compact 80p | Non-Condensing | Gas | 72.2% |
| Glow-worm Easicom 2 24c | Condensing | Gas | 89.2% |
| Glow-worm Easicom 2 28c | Condensing | Gas | 89.2% |
| Glow-worm Easicom 24 | Condensing | Gas | 89.0% |
| Glow-worm Easicom 28 | Condensing | Gas | 88.5% |
| Glow-worm EASICOM 3 25r | Condensing | Gas | 89.7% |
| Glow-worm EASICOM 3 25s | Condensing | Gas | 89.7% |
| Glow-worm EASICOM 3 28c-A (H-GB) | Condensing | Gas | 89.6% |
| Glow-worm Economy Plus 100f | Non-Condensing | Gas | 72.0% |
| Glow-worm Economy Plus 24B | Non-Condensing | Gas | 75.1% |
| Glow-worm Economy Plus 24F | Non-Condensing | Gas | 77.2% |
| Glow-worm Economy Plus 30B | Non-Condensing | Gas | 71.3% |
| Glow-worm Economy Plus 30C | Non-Condensing | Gas | 72.4% |
| Glow-worm Economy Plus 30F | Non-Condensing | Gas | 75.7% |
| Glow-worm Economy Plus 40B | Non-Condensing | Gas | 71.9% |
| Glow-worm Economy Plus 40C | Non-Condensing | Gas | 71.9% |
| Glow-worm Economy Plus 40F | Non-Condensing | Gas | 77.0% |
| Glow-worm Economy Plus 50B | Non-Condensing | Gas | 73.1% |
| Glow-worm Economy Plus 50C | Non-Condensing | Gas | 72.4% |
| Glow-worm Economy Plus 50F | Non-Condensing | Gas | 76.3% |
| Glow-worm Economy Plus 60B | Non-Condensing | Gas | 75.4% |
| Glow-worm Economy Plus 60C | Non-Condensing | Gas | 73.8% |
| Glow-worm Economy Plus 60F | Non-Condensing | Gas | 75.8% |
| Glow-worm Economy Plus 75B | Non-Condensing | Gas | 65.0% |
| Glow-worm Economy Plus 80F | Non-Condensing | Gas | 77.6% |
| Glow-worm ENERGY 12r | Condensing | Gas | 89.3% |
| Glow-worm ENERGY 12s | Condensing | Gas | 89.3% |
| Glow-worm ENERGY 15r | Condensing | Gas | 89.3% |
| Glow-worm ENERGY 15s | Condensing | Gas | 89.3% |
| Glow-worm ENERGY 18r | Condensing | Gas | 89.3% |
| Glow-worm ENERGY 18s | Condensing | Gas | 89.3% |
| Glow-worm Energy 25c | Condensing | Gas | 89.2% |
| Glow-worm ENERGY 25r | Condensing | Gas | 89.3% |
| Glow-worm ENERGY 25s | Condensing | Gas | 89.3% |
| Glow-worm Energy 30c | Condensing | Gas | 89.2% |
| Glow-worm ENERGY 30r | Condensing | Gas | 89.2% |
| Glow-worm ENERGY 30s | Condensing | Gas | 89.2% |
| Glow-worm Energy 35 Store | Condensing | Gas | 89.4% |
| Glow-worm Energy 35c | Condensing | Gas | 89.2% |
| Glow-worm Energysaver 30 | Condensing | Gas | 85.9% |
| Glow-worm Energysaver 30e | Condensing | Gas | 85.9% |
| Glow-worm Energysaver 40 | Condensing | Gas | 86.0% |
| Glow-worm Energysaver 40e | Condensing | Gas | 86.0% |
| Glow-worm Energysaver 40P | Condensing | LPG | 86.4% |
| Glow-worm Energysaver 50 | Condensing | Gas | 86.1% |
| Glow-worm Energysaver 50e | Condensing | Gas | 86.1% |
| Glow-worm Energysaver 50P | Condensing | LPG | 86.5% |
| Glow-worm Energysaver 60 | Condensing | Gas | 86.2% |
| Glow-worm Energysaver 60e | Condensing | Gas | 86.2% |
| Glow-worm Energysaver 60P | Condensing | LPG | 86.5% |
| Glow-worm Energysaver 70 | Condensing | Gas | 86.6% |
| Glow-worm Energysaver 80 | Condensing | Gas | 86.6% |
| Glow-worm Energysaver 80P | Condensing | LPG | 87.6% |
| Glow-worm Energysaver Combi 100 | Condensing | Gas | 89.2% |
| Glow-worm Energysaver Combi 80 | Condensing | Gas | 89.4% |
| Glow-worm Essential 24c | Condensing | Gas | 89.2% |
| Glow-worm Essential 28c | Condensing | Gas | 89.2% |
| Glow-worm Flexicom 12hx | Condensing | Gas | 88.5% |
| Glow-worm Flexicom 15hx | Condensing | Gas | 88.5% |
| Glow-worm Flexicom 18hx | Condensing | Gas | 88.4% |
| Glow-worm Flexicom 18sx | Condensing | Gas | 88.4% |
| Glow-worm Flexicom 24cx | Condensing | Gas | 88.4% |
| Glow-worm Flexicom 24hx | Condensing | Gas | 88.4% |
| Glow-worm Flexicom 30cx | Condensing | Gas | 88.3% |
| Glow-worm Flexicom 30hx | Condensing | Gas | 88.7% |
| Glow-worm Flexicom 30sx | Condensing | Gas | 88.8% |
| Glow-worm Flexicom 35cx | Condensing | Gas | 89.1% |
| Glow-worm Flexicom 35hx | Condensing | Gas | 89.2% |
| Glow-worm Fuelsaver 100F | Non-Condensing | Gas | 72.0% |
| Glow-worm Fuelsaver 25-30 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 25-30B | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 30-40 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 30-40B | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 30bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 30brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 30mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 35f | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver 40-50 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 40-50b | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 40bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 40brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 40mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 45f | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver 50bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 50brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 50mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 55-60b | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 55f | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver 60-70b | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 60bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 60brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 60mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 65f | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver 75bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 75brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 75mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver 80f | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver Complheat 30 | Non-Condensing | Gas | 76.5% |
| Glow-worm Fuelsaver Complheat 40 | Non-Condensing | Gas | 76.7% |
| Glow-worm Fuelsaver Complheat 55 | Non-Condensing | Gas | 76.4% |
| Glow-worm Fuelsaver Complheat 65 | Non-Condensing | Gas | 79.1% |
| Glow-worm Fuelsaver Complheat 80 | Non-Condensing | Gas | 79.0% |
| Glow-worm Fuelsaver Economy Plus 24B | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver Economy Plus 24F | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver Economy Plus 30B | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver Economy Plus 30F | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver Economy Plus 40B | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver Economy Plus 40C | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver Economy Plus 40F | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver Economy Plus 50C | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver Economy Plus 50F | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver Economy Plus 60B | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver Economy Plus 60C | Non-Condensing | Gas | 65.0% |
| Glow-worm Fuelsaver Economy Plus 60F | Non-Condensing | Gas | 68.0% |
| Glow-worm Fuelsaver Economy Plus 80F | Non-Condensing | Gas | 68.0% |
| Glow-worm Galaxie 240/6 | Non-Condensing | Gas | 65.0% |
| Glow-worm Galaxie 246 | Non-Condensing | Gas | 65.0% |
| Glow-worm Glow-Worm 18si | Non-Condensing | Gas | 76.8% |
| Glow-worm Hideaway 100 | Non-Condensing | Gas | 72.1% |
| Glow-worm Hideaway 100B | Non-Condensing | Gas | 73.0% |
| Glow-worm Hideaway 100BFF | Non-Condensing | Gas | 79.9% |
| Glow-worm Hideaway 100CFF | Non-Condensing | Gas | 79.9% |
| Glow-worm Hideaway 115BFF | Non-Condensing | Gas | 78.7% |
| Glow-worm Hideaway 115CFF | Non-Condensing | Gas | 78.7% |
| Glow-worm Hideaway 120 | Non-Condensing | Gas | 73.0% |
| Glow-worm Hideaway 120B | Non-Condensing | Gas | 72.0% |
| Glow-worm Hideaway 40 | Non-Condensing | Gas | 70.8% |
| Glow-worm Hideaway 40B | Non-Condensing | Gas | 71.5% |
| Glow-worm Hideaway 40BFF | Non-Condensing | Gas | 78.3% |
| Glow-worm Hideaway 40CFF | Non-Condensing | Gas | 78.3% |
| Glow-worm Hideaway 50 | Non-Condensing | Gas | 71.0% |
| Glow-worm Hideaway 50B | Non-Condensing | Gas | 71.4% |
| Glow-worm Hideaway 50BFF | Non-Condensing | Gas | 78.2% |
| Glow-worm Hideaway 50CFF | Non-Condensing | Gas | 78.2% |
| Glow-worm Hideaway 60 | Non-Condensing | Gas | 71.3% |
| Glow-worm Hideaway 60B | Non-Condensing | Gas | 71.7% |
| Glow-worm Hideaway 60BFF | Non-Condensing | Gas | 78.5% |
| Glow-worm Hideaway 60BL | Non-Condensing | Gas | 65.0% |
| Glow-worm Hideaway 60CFF | Non-Condensing | Gas | 78.5% |
| Glow-worm Hideaway 60L | Non-Condensing | Gas | 65.0% |
| Glow-worm Hideaway 70 | Non-Condensing | Gas | 71.8% |
| Glow-worm Hideaway 70B | Non-Condensing | Gas | 72.5% |
| Glow-worm Hideaway 70of | Non-Condensing | Gas | 65.0% |
| Glow-worm Hideaway 80 | Non-Condensing | Gas | 71.7% |
| Glow-worm Hideaway 80B | Non-Condensing | Gas | 72.6% |
| Glow-worm Hideaway 80BFF | Non-Condensing | Gas | 78.4% |
| Glow-worm Hideaway 80BL | Non-Condensing | Gas | 65.0% |
| Glow-worm Hideaway 80CFF | Non-Condensing | Gas | 78.4% |
| Glow-worm Hideaway 80L | Non-Condensing | Gas | 65.0% |
| Glow-worm Hideaway 90 | Non-Condensing | Gas | 71.7% |
| Glow-worm Hideaway 90B | Non-Condensing | Gas | 72.8% |
| Glow-worm Hideaway 90of | Non-Condensing | Gas | 65.0% |
| Glow-worm HOME 12r | Condensing | Gas | 89.3% |
| Glow-worm HOME 12s | Condensing | Gas | 89.3% |
| Glow-worm HOME 15r | Condensing | Gas | 89.3% |
| Glow-worm HOME 15s | Condensing | Gas | 89.3% |
| Glow-worm HOME 18r | Condensing | Gas | 89.3% |
| Glow-worm HOME 18s | Condensing | Gas | 89.3% |
| Glow-worm HOME 25c | Condensing | Gas | 89.3% |
| Glow-worm HOME 25r | Condensing | Gas | 89.3% |
| Glow-worm HOME 25s | Condensing | Gas | 89.3% |
| Glow-worm HOME 30c | Condensing | Gas | 89.3% |
| Glow-worm HOME 30r | Condensing | Gas | 89.2% |
| Glow-worm HOME 35c | Condensing | Gas | 89.3% |
| Glow-worm Inset BBU 40 | Non-Condensing | Gas | 75.5% |
| Glow-worm Inset BBU 50 | Non-Condensing | Gas | 77.6% |
| Glow-worm Majorca 240/6 | Non-Condensing | Gas | 65.0% |
| Glow-worm Majorca 246 | Non-Condensing | Gas | 65.0% |
| Glow-worm Majorca 340/6 | Non-Condensing | Gas | 65.0% |
| Glow-worm Majorca 340/6auto | Non-Condensing | Gas | 65.0% |
| Glow-worm Majorca 346 | Non-Condensing | Gas | 65.0% |
| Glow-worm Micron 100FF | Non-Condensing | Gas | 79.5% |
| Glow-worm Micron 120FF | Non-Condensing | Gas | 78.1% |
| Glow-worm Micron 30 FF | Non-Condensing | Gas | 78.3% |
| Glow-worm Micron 30FF | Non-Condensing | Gas | 76.6% |
| Glow-worm Micron 40 FF | Non-Condensing | Gas | 78.7% |
| Glow-worm Micron 40FF | Non-Condensing | Gas | 77.3% |
| Glow-worm Micron 50FF | Non-Condensing | Gas | 78.9% |
| Glow-worm Micron 60 FF | Non-Condensing | Gas | 78.8% |
| Glow-worm Micron 60FF | Non-Condensing | Gas | 77.2% |
| Glow-worm Micron 70 FF | Non-Condensing | Gas | 78.3% |
| Glow-worm Micron 70FF | Non-Condensing | Gas | 77.4% |
| Glow-worm Micron 80 FF | Non-Condensing | Gas | 78.3% |
| Glow-worm Micron 80FF | Non-Condensing | Gas | 77.2% |
| Glow-worm Micron100FF | Non-Condensing | Gas | 77.5% |
| Glow-worm PROCOMBI ESSENTIAL 24c P – A (H-GB) | Condensing | LPG | 91.1% |
| Glow-worm PROCOMBI ESSENTIAL 35c | Condensing | Gas | 89.7% |
| Glow-worm Royale 240/6 | Non-Condensing | Gas | 65.0% |
| Glow-worm Royale 246 | Non-Condensing | Gas | 65.0% |
| Glow-worm Saunier Duval SB30e A | Non-Condensing | Gas | 79.3% |
| Glow-worm Saunier Duval SD30e A | Non-Condensing | Gas | 79.2% |
| Glow-worm Spacesaver 20-30f | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 20-30rf | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 20-30rfs | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 22-30b | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 22-30f | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 30-40f | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 30-40rf | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 30-40rfs | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 30bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 30brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 30mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 30rmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 38 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 38bf | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 40-50rf | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 40-50rfs | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 40bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 40brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 40f | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 40mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 40rmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 45-60 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 45-60b | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 50-60rf | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 50-60rfs | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 50bf | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 50bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 50f | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 50mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 50rmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 52 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 60bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 60brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 60f | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 60mk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 60rmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 65-75f | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver 75 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 75bf | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 80bmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver 80brmk2 | Non-Condensing | Gas | 65.0% |
| Glow-worm Spacesaver Complheat 60 | Non-Condensing | Gas | 72.0% |
| Glow-worm Spacesaver Complheat 70 | Non-Condensing | Gas | 72.0% |
| Glow-worm Spacesaver Kfb 20 | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver Kfb 60 | Non-Condensing | Gas | 68.0% |
| Glow-worm Spacesaver Kfb 70 | Non-Condensing | Gas | 68.0% |
| Glow-worm Suburban Suburban | Non-Condensing | Gas | 65.0% |
| Glow-worm Super 30 | Non-Condensing | Gas | 65.0% |
| Glow-worm Super 30b | Non-Condensing | Gas | 65.0% |
| Glow-worm Super 40 | Non-Condensing | Gas | 65.0% |
| Glow-worm Super 40b | Non-Condensing | Gas | 65.0% |
| Glow-worm Super 52 | Non-Condensing | Gas | 65.0% |
| Glow-worm Super 52b | Non-Condensing | Gas | 65.0% |
| Glow-worm SUSTAIN 12r | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 12s | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 15r | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 15s | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 18r | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 18s | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 25c | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 30c | Condensing | Gas | 89.3% |
| Glow-worm SUSTAIN 35c | Condensing | Gas | 89.3% |
| Glow-worm Swiftflow 100 | Non-Condensing | Gas | 70.0% |
| Glow-worm Swiftflow 100 Honeywell valve | Non-Condensing | Gas | 70.7% |
| Glow-worm Swiftflow 100 SIT valve | Non-Condensing | Gas | 70.7% |
| Glow-worm Swiftflow 100e | Non-Condensing | Gas | 76.6% |
| Glow-worm Swiftflow 120 | Non-Condensing | Gas | 73.1% |
| Glow-worm Swiftflow 125e | Non-Condensing | Gas | 79.4% |
| Glow-worm Swiftflow 75 | Non-Condensing | Gas | 70.0% |
| Glow-worm Swiftflow 75 Honeywell valve | Non-Condensing | Gas | 71.4% |
| Glow-worm Swiftflow 75 SIT valve | Non-Condensing | Gas | 71.4% |
| Glow-worm Swiftflow 75e | Non-Condensing | Gas | 76.5% |
| Glow-worm Swiftflow 80 | Non-Condensing | Gas | 70.0% |
| Glow-worm Swiftflow 80 Honeywell valve | Non-Condensing | Gas | 73.1% |
| Glow-worm Swiftflow 80 SIT valve | Non-Condensing | Gas | 73.1% |
| Glow-worm Swiftflow 80e | Non-Condensing | Gas | 76.6% |
| Glow-worm Ultimate 100 FF | Non-Condensing | Gas | 79.5% |
| Glow-worm Ultimate 100FF | Non-Condensing | Gas | 77.5% |
| Glow-worm Ultimate 120FF | Non-Condensing | Gas | 78.1% |
| Glow-worm Ultimate 2 25r | Condensing | Gas | 89.3% |
| Glow-worm ULTIMATE 2 25s | Condensing | Gas | 89.3% |
| Glow-worm ULTIMATE 2 30C | Condensing | Gas | 89.2% |
| Glow-worm ULTIMATE 2 35c | Condensing | Gas | 89.2% |
| Glow-worm Ultimate 24h | Condensing | Gas | 88.4% |
| Glow-worm ULTIMATE 3 25r-A (H-GB) | Condensing | Gas | 89.6% |
| Glow-worm ULTIMATE 3 25s-A (H-GB) | Condensing | Gas | 89.7% |
| Glow-worm ULTIMATE 3 30c-A (H-GB) | Condensing | Gas | 89.6% |
| Glow-worm ULTIMATE 3 35c-A (H-GB) | Condensing | Gas | 89.7% |
| Glow-worm Ultimate 30BF | Non-Condensing | Gas | 73.0% |
| Glow-worm Ultimate 30c | Condensing | Gas | 88.9% |
| Glow-worm Ultimate 30FF | Non-Condensing | Gas | 79.7% |
| Glow-worm Ultimate 30FF/LP | Non-Condensing | LPG | 78.0% |
| Glow-worm Ultimate 35c | Condensing | Gas | 88.8% |
| Glow-worm Ultimate 40 FF | Non-Condensing | Gas | 78.7% |
| Glow-worm Ultimate 40BF | Non-Condensing | Gas | 72.1% |
| Glow-worm Ultimate 40FF | Non-Condensing | Gas | 75.4% |
| Glow-worm Ultimate 40FF/LP | Non-Condensing | LPG | 78.0% |
| Glow-worm Ultimate 50 FF | Non-Condensing | Gas | 78.8% |
| Glow-worm Ultimate 50BF | Non-Condensing | Gas | 73.1% |
| Glow-worm Ultimate 50BF/LP | Non-Condensing | LPG | 74.8% |
| Glow-worm Ultimate 50FF | Non-Condensing | Gas | 76.0% |
| Glow-worm Ultimate 50FF/LP | Non-Condensing | LPG | 80.1% |
| Glow-worm Ultimate 60 FF | Non-Condensing | Gas | 79.4% |
| Glow-worm Ultimate 60BF | Non-Condensing | Gas | 75.6% |
| Glow-worm Ultimate 60FF | Non-Condensing | Gas | 76.6% |
| Glow-worm Ultimate 60FF/LP | Non-Condensing | LPG | 77.5% |
| Glow-worm Ultimate 70 FF | Non-Condensing | Gas | 79.3% |
| Glow-worm Ultimate 70FF | Non-Condensing | Gas | 77.1% |
| Glow-worm Ultimate 80 FF | Non-Condensing | Gas | 79.4% |
| Glow-worm Ultimate 80bf | Non-Condensing | Gas | 65.0% |
| Glow-worm Ultimate 80FF | Non-Condensing | Gas | 76.3% |
| Glow-worm Ultimate 80FF/LP | Non-Condensing | LPG | 79.8% |
| Glow-worm Ultracom 12hxi | Condensing | Gas | 88.7% |
| Glow-worm Ultracom 15hxi | Condensing | Gas | 88.7% |
| Glow-worm Ultracom 18hxi | Condensing | Gas | 88.6% |
| Glow-worm Ultracom 18sxi | Condensing | Gas | 88.6% |
| Glow-worm Ultracom 2 12sxi | Condensing | Gas | 89.5% |
| Glow-worm Ultracom 2 18sxi | Condensing | Gas | 89.1% |
| Glow-worm Ultracom 2 24cxi | Condensing | Gas | 89.0% |
| Glow-worm Ultracom 2 30cxi | Condensing | Gas | 89.3% |
| Glow-worm Ultracom 2 30sxi | Condensing | Gas | 89.4% |
| Glow-worm Ultracom 2 35 Store | Condensing | Gas | 89.4% |
| Glow-worm Ultracom 2 35cxi | Condensing | Gas | 89.3% |
| Glow-worm Ultracom 24cx | Condensing | Gas | 88.5% |
| Glow-worm Ultracom 24cxi | Condensing | Gas | 88.5% |
| Glow-worm Ultracom 24hxi | Condensing | Gas | 88.9% |
| Glow-worm Ultracom 30cx | Condensing | Gas | 88.7% |
| Glow-worm Ultracom 30cxi | Condensing | Gas | 88.5% |
| Glow-worm Ultracom 30hxi | Condensing | Gas | 88.7% |
| Glow-worm Ultracom 30sxi | Condensing | Gas | 88.8% |
| Glow-worm Ultracom 38cxi | Condensing | Gas | 88.5% |
| Glow-worm Ultracom 38hxi | Condensing | Gas | 89.2% |
| Glow-worm Ultrapower 100 SXI | Condensing | Gas | 89.2% |
| Glow-worm Ultrapower 170 SXI | Condensing | Gas | 89.3% |
| Glow-worm Xtrafast 120 | Non-Condensing | Gas | 78.6% |
| Glow-worm Xtrafast 96 | Non-Condensing | Gas | 79.4% |
| Glow-worm Xtramax A | Non-Condensing | Gas | 78.9% |
| Glow-worm Xtramax HE | Condensing | LPG | 90.2% |
Get FREE Boiler Quotes
Compare prices today
No obligation to buy
Visit Boiler Guide to get free quotes from trustworthy heating engineers in your area.
