Glow-worm boilers achieve very low NOx emissions

Glow-worm offers several ranges of boilers with NOx emissions lower than 40 mg/kWh, so their use scores maximum points in the Government’s Code for Sustainable Housing Ultracom, Flexicom and Ultrapower condensing boilers also achieve a SEDBUK A rating for energy efficiency.
These boilers use pre-mix burner technology. They also have the option of a direct rear flue. Other flue options include a twin flue of up to 40 m long.
Some boilers come complete with prefixing jigs for water and gas connections, so pipework can be assembled before the boiler is fitted to the wall.