Combi boiler

Baxi
600 24kW Combi

A 24kW combi boiler from Baxi — installed in a single day by Gas Safe registered engineers.

Fully installed from
£2,500
Finance available
24kWHeat output
CombiBoiler type
7 yearsManufacturer warranty
1–2 dayInstallation
Baxi 600 Combi 2 gas combi boiler with external pressure gauge, angled view
Combi boiler
24kW output
10.2 L/min flow rate

Built for real homes.
Not showrooms.

The Baxi 600 24kW is designed to work quietly, efficiently, and reliably — for years to come.

  • Compact cupboard-fit design
  • Stainless steel heat exchanger and brass hydraulics
  • EasyFill link for topping up system pressure yourself
  • Pre-heated condensate trap to help prevent freezing
  • Compatible with the Baxi uSense smart thermostat
  • 24kW heat output — Combi boiler
  • 21kW central heating output
  • 10.2 L/min hot water flow rate
  • 7 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.

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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
24kW
Combi boiler
Central heating
21kW
Heating output
Flow rate
10.2 L/min
Hot water delivery
Efficiency
93%
ErP energy rating
Warranty
7 years
Manufacturer guarantee
Dimensions
W 395 x H 700 x D 285 mm
Width × height × depth
Fully installed from
£2,500
Fully installed, no extras

Baxi 600 24kW

The Baxi 600 Combi 24kW is the middle of Baxi's combi range, with a longer warranty than the 400. It's compact enough for a standard kitchen cupboard and delivers hot water at up to 10.2 litres a minute.

It has a stainless steel heat exchanger and brass hydraulics, and the EasyFill link lets you top up your system pressure without calling an engineer. A pre-heated condensate trap helps prevent frozen condensate pipes in winter, and it works with the Baxi uSense smart thermostat.

Backed by a 7-year Baxi parts and labour warranty.

The 24kW is the smallest size of the Baxi 600 Combi, with hot water at up to 10.2 litres a minute. It suits homes that don't often run more than one hot tap or shower at a time. Not sure which size or type you need? Our guides to what size boiler you need and combi vs system boilers explain the differences.

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, subject to status.

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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).