Glow-worm originally begun producing boilers back in 1934 at the Derwent Foundry in Derbyshire.

They are well known for their reasonably priced, reliable and efficient products and are considered one of the leading heating manufacturers in the UK.

In 2001 Glow-worm was acquired by the Vaillant Group, Europe’s second-largest heating company who employ over 12,000 people across Europe and China.

The warranties for these boilers are typically around 10 years.