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Flexicom sx (Discontinued)

The Compact System Boiler from Glow-worm

  • High efficiency with a NOx class 5 rating
  • The only condensing system boiler with a direct flue
  • Could be fitted almost anywhere
  • On board diagnostics for superior serviceability

Flexibility for every household

Flexicom is Glow-worm’s high efficiency system boiler suited to most UK homes, from apartments to 4 bedroom detached.

Small boiler, Big supply

The Flexicom sx range provides a large supply of hot water through a compact boiler and a storage cylinder (normally housed in your airing cupboard) without the need for a cold water tank in your loft.

Designed for Flexibility

The Flexicom sx system boiler is designed to be extremely flexible. It's so small it can fit inside a standard kitchen cupboard*, it's compatible with any model of indirect cylinder and the Flexicom sx is also the only condensing system boiler in the UK with a direct rear flue option - so you can fit it almost anywhere.

Features & Benefits

  • High Efficiency with a NOx Class 5 rating
  • Fits inside standard kitchen cupboard*
  • Only high efficiency condensing boiler in the UK with a direct rear flue option
  • Inbuilt frost protection for the all important winter months
  • 2 years parts and labour warranty**

* Sizes of kitchen cupboards vary. Please check boiler and cupboard dimensions prior to installations.

**Glow-worm’s certified installers can offer you up to 15 years of warranty; if you’re interested please get in touch with your nearest one here.

To view the Terms & Conditions of the Glow-worm Guarantee please click here.

Related Products

Related Products

Climapro₂ RF Control

  • Capable of room and weather compensation*
  • Two channel wireless programmable room thermostat
  • Backlit display provides advanced user control and functionality
  • 2 years standard warranty


  • High grade stainless steel cylinder with laser welded seams
  • High recovery heating coil - just 20 minutes
  • Glow-worm 2 year guarantee
  • 25 Year Warranty on cylinder shell. (Subject to water quality, correct installation and annual servicing)