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Glow-worm Boilers

Manufacturers of gas boilers and solar products

Glow-worm Boilers

Since 1934 Glow-worm has been a trusted British producer of home heating solutions. Now part of the Vaillant Group Glow-worm continues from strength to strength as a leading supplier of reliable, easy to use and simple to install boilers.

Current Glow-worm Products

  • Combi Gas Boilers
  • Open Vent Boilers
  • System Boilers
  • Solar Hot Water Products
  • Heat Pumps

Glow-worm are a household name and aim to ‘keep things simple’ by manufacturing highly efficient boilers and solar thermal products that meet or exceed the stringent regulations laid down in ‘Part L’ of the building regulations (Part J in Scotland). .

Glow-worm Open Vent (Heat Only) Boilers

Glowworm Flexicom 15HX
Model 15 HX
Fuel Type Natural Gas
Boiler Type Regular Condensing
Output to CH and HW (kW) 9.5-15.0
NOx Class (5 = Best) 5
Efficiency Rating A rating 90.5%



Why Use Glow-worm Boilers?

Glow-worm Boilers

After sales service is provided by a team of Gas Safe registered service engineers (over 200) and a call centre open 7 days a week 364 days a year. The call centre can help with technical queries over the phone and will despatch an engineer should it deem necessary.

Every engineer carries over 1,500 spare parts in their van and achieve a 95% first time fix rate. Glow-worm products are popular with installers and specifiers due to their simple installation which keeps costs to a minimum.