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Baxi 600 System LPG Boiler

Designed to fit into a kitchen cupboard, the Baxi 600 System LPG boiler is ideal for off-grid homes with a high demand for hot water.

The Baxi 600 System LPG is a lightweight boiler that’s powerful enough to keep up with high heating and hot water requirements and is perfect for properties off the gas grid with multiple bathrooms. Suitable for cupboard fit installations, this LPG system boiler has compact dimensions, is built using top-quality brass components and could help save you money on your heating bills.  

How Much Does this Boiler Cost?

Available in a 24kW heating output, the Baxi 600 System LPG typically has a £950 price tag, not including the installation cost. Boiler installation costs vary significantly depending on who you hire to install the boiler and the amount of work involved, so be sure to get a quote from local and national installers to find the best price. You must also make sure your chosen boiler installer is Gas Safe registered. 

How will I know if this Boiler is Suitable for My Home?

Baxi’s 600 System LPG is for homes off the mains gas network and ideal for properties with several bathrooms or those that use a lot of hot water. Like all system boilers, this boiler model from Baxi requires a separate hot water storage cylinder but does not need a cold water feed tank in the loft. 

The Baxi 600 System LPG has a 24kW output, which won’t be suitable for all homes. Choosing the correct boiler size is something a Gas Safe registered engineer can help you with, so be sure to contact one for advice before making your decision. 

Is it a High Efficiency Boiler?

Yes. The fully modulating Baxi 600 System LPG is a highly efficient ErP A-rated boiler endorsed by Energy Saving Trust. That means it should help save you some money on your fuel bills and even lower your carbon footprint. 

Does this Boiler have a Good Range of Controls and Features?

This compact LPG system boiler from Baxi has a simple hanging bracket and rear piping within the boiler casing to save time and money on installation. It also allows front access to all components to save time when servicing and comes complete with brass hydraulic blocks and a built-in drip tray. Compatible with the market-leading Megaflo Eco Cylinder, the Baxi 600 System LPG is small enough to be installed discreetly inside a standard kitchen cupboard. 

How long is the Warranty on this Boiler?

If you choose to get the Baxi 600 System LPG installed, you’ll receive a 7-year parts and labour warranty for extra peace of mind. 

Summary of Important Information

  • Expect to pay around £950
  • Heating output of 24kW
  • Dimensions of 700mm (H) x 390mm (W) x 285mm (D)
  • Uses LPG as its fuel source
  • A-rated for efficiency
  • 7-year warranty as standard

Pros and Cons

This LPG system boiler from Baxi has a lot going for it and is perfect if you live off the gas grid and want a boiler that can deal with two baths or showers running at once. Check out the list of pros and cons below to help you decide whether the Baxi 600 System LPG is the best boiler for you. 


  • Baxi has a Which? brand score of 76% – correct at the time of writing – January 2022
  • Considerably cheaper than some other boiler brands
  • Fits inside a kitchen cupboard
  • Suited to medium and large-sized homes 
  • Easy to install, use and service
  • Built using top-quality components
  • Front access to all components – saves time when servicing
  • Compatible with the market-leading Megaflo Eco Cylinder
  • Provides maximum energy efficiency – reduce fuel bills and carbon emissions
  • Energy Saving Trust endorsed product
  • Excellent rating on Trustpilot – correct at the time of writing – January 2022
  • 7-year parts and labour warranty


  • Requires separate cylinder
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