Combi boiler

The Glow-worm
Compact.

A 28kW combi boiler from Glow-worm — installed in a single day by Gas Safe registered engineers.

Fully installed from
£1,899
Finance available
28kWHeat output
CombiBoiler type
5 yearsManufacturer warranty
1–2 dayInstallation
Glow worm Compact
Combi boiler
28kW output
11.5 L/min flow rate

Built for real homes.
Not showrooms.

The Glow-worm Compact 28kW is designed to work quietly, efficiently, and reliably — for years to come.

  • ErP A-rated efficiency
  • Fits neatly inside standard kitchen cupboards
  • Stainless steel heat exchanger for long-term reliability
  • Modulating output to reduce energy use
  • Simple, easy to use controls
  • Low NOx emissions
  • 28kW heat output — Combi boiler
  • 23.9kW central heating output
  • 11.5 L/min hot water flow rate
  • 5 year manufacturer warranty
  • 93% ErP efficiency rating

One price.
Everything covered.

No surprise add-ons. Your quote covers everything needed for a complete installation that meets all gas safety regulations, carried out by Gas Safe registered engineers.

Price and installation time varies depending on your installation requirements. Answer a few quick questions to get your exact fixed price.

Get your free quote
Flue, fittings & full installation
Magnetic system filter
System cleanse & inhibitor
Removal & safe disposal of your old boiler
Gas Safe registered installation certificate
Warranty registration

The numbers
that matter.

Boiler type
Combi
System type
Heat output
28kW
Combi boiler
Central heating
23.9kW
Heating output
Flow rate
11.5 L/min
Hot water delivery
Efficiency
93%
ErP energy rating
Warranty
5 years
Manufacturer guarantee
Dimensions
H 626 x W 400 x D 270 mm
Width × height × depth
Fully installed from
£1,899
Fully installed, no extras

Glow-worm Compact 28kW

The Glow-worm Compact 28kW combines compact dimensions with stronger hot water performance for improved everyday comfort. Designed to fit neatly inside a standard kitchen cupboard, it delivers reliable heating and hot water without unnecessary complexity.

An easy-to-use LCD display, quiet operation and Glow-worm smart control compatibility help make the Compact 28kW one of the most practical boilers in the Glow-worm range.

Don't let cost get
in the way of warmth.

Spread the cost of your new boiler over monthly payments that fit your budget. Available through iDeal4Finance — apply in minutes.

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Representative example only. Subject to status. Boxheat Ltd is an Introducer Appointed Representative of Ideal Sales Solutions Ltd t/a Ideal4Finance (FN 703047).