Regular boiler

The Baxi
600.

A 25kW regular boiler from Baxi — installed in a single day by Gas Safe registered engineers.

Fully installed from
£2,580
Finance available
25kWHeat output
RegularBoiler type
7 yearsManufacturer warranty
1–2 dayInstallation
Baxi 600 Heat Only Boiler
Regular boiler
25kW output

Built for real homes.
Not showrooms.

The Baxi 600 25kW is designed to work quietly, efficiently, and reliably — for years to come.

  • Quiet operation
  • 25kW heat output — Regular boiler
  • 25kW central heating output
  • 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.

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
Regular
System type
Heat output
25kW
Regular boiler
Central heating
25kW
Heating output
Efficiency
93%
ErP energy rating
Warranty
7 years
Manufacturer guarantee
Dimensions
H 625 x W 370 x D 270 mm
Width × height × depth
Fully installed from
£2,580
Fully installed, no extras

Baxi 600 25kW

The Baxi 600 Regular is a reliable heat-only boiler for homes with a traditional heating setup — typically older properties with a cold water tank in the loft and a hot water cylinder. It's designed to slot in cleanly as a replacement for older open-vent or sealed systems without a major reroute.

Compact and lightweight for its output, it sits quietly and efficiently once installed. A-rated efficiency and a simple, front-accessible design make it easy to service year after year, and it's compatible with both fully pumped open-vent and sealed systems for installation flexibility.

Backed by a 7-year parts and labour warranty.

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).