Up to 10 years
Glow-worm repair & installation
Sister brand to Vaillant — same UK servicing network, more accessible price point.
Popular models we service
EnergyEasicomUltimate3
Common fault codes
F1
Low water pressure
F4
No flame established
F9
Boiler timing out on heating
F22
Low water pressure
F28
Ignition fault
F29
Flame loss during operation
F75
Pressure sensor / pump fault
