Each model in Glow-worm’s Ultracom range of boilers has been officially sanctioned and tested as delivering less than 40 mg/kWh of NOx emissions, making one of the best in its class. NOx emissions are an important issue for installations in social housing and private developments and when working towards Level 3 of the Code for Sustainable Homes.
 The Ultracom range of boilers comprises combis, open-vent models and system models. Outputs range from 12 to 38 kW.
 All Glow-worm boilers are covered by a 2-year warranty for parts and one year for labour.