Combi boiler

The Baxi
600.

A 36kW combi boiler from Baxi — installed in a single day by Gas Safe registered engineers.

Fully installed from
£2,780
Finance available
36kWHeat output
CombiBoiler type
7 yearsManufacturer warranty
1–2 dayInstallation
Baxi 600 36kW gas boiler – product image – BoxHeat
Combi boiler
36kW output
15 L/min flow rate

Built for real homes.
Not showrooms.

The Baxi 600 36kW is designed to work quietly, efficiently, and reliably — for years to come.

  • Compact Size
  • Stainless steel heat exchanger
  • 36kW heat output — Combi boiler
  • 25kW central heating output
  • 15 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.

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
36kW
Combi boiler
Central heating
25kW
Heating output
Flow rate
15 L/min
Hot water delivery
Efficiency
93%
ErP energy rating
Warranty
7 years
Manufacturer guarantee
Dimensions
H 700 x W 395 x D 285 mm
Width × height × depth
Fully installed from
£2,780
Fully installed, no extras

Baxi 600 36kW

The most powerful model in the Baxi 600 combi range, the 36kW is designed for homes with a higher demand for hot water and central heating. It delivers strong flow rates across multiple outlets, making it a comfortable fit for families sharing two or more bathrooms.

It carries all the features of the 600 range — compact cupboard-fit design, OpenTherm compatibility, pre-heated condensate trap, and Easy-Fill link — in the same compact footprint. Efficient, quiet, and straightforward to install and service.

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.

Learn about finance
0%Interest options available on selected plans
FastDecision in minutes — apply online today
FlexibleChoose a repayment term that works for you
£0Upfront cost options on qualifying applications
£
Monthly payment
Select a term above

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