Single Coil Cylinders - for traditional heating systems

An integral part of any open vent or sealed system, Glow-worm cylinders are extremely reliable, hard wearing and come complete with a 25 year warranty against perforation of the steel shell.

They are available in six sizes - 115, 150, 175, 200, 250 and 300 litres and manufactured from high grade stainless steel with laser welded seams.

Our cylinders are built with efficiency and performance in mind, and incorporate excellent insulation that achieves heat loss as low as 1.7kWh/24hrs and a high recovery heating coil that reheats the cylinder in as little as 20 minutes.

Key Features

• Single coil available in115, 150, 175, 200, 250 & 300 litres
• High grade stainless steel cylinder with laser welded seams
• Insulation meeting CheSS best practice as low as 1.7kWh/24hrs1
• High recovery heating coil -just 20 minutes
• External expansion vessel supplied
• Covered controls and wiring box
• Simple maintenance - no anode required
• High flow rates achievable working at 3.5bar pressure
• 25 year warranty on cylinder shell