Quick answer: Baxi’s numbering makes it simple: the higher the number, the higher the spec. Choose the 400 for a smaller home on a budget, the 600 for most homes, and the 800 for Baxi’s best components and longest guarantee.
Baxi have been around since 1866, making them one of Britain’s longest-running heating brands. Here is how the Baxi 400, 600 and 800 compare.
At a glance
| Baxi 400 | Baxi 600 | Baxi 800 | |
|---|---|---|---|
| Range | Entry level | Mid-range | Premium |
| Boiler types | Combi or heat only | Combi, system or heat only | Combi, system or heat only |
| Guarantee when we fit it | 5 years | 7 years | 10 years |
| Best for | Smaller homes on a budget | Most homes | Larger homes and anyone who wants the best |
| Stand-out feature | A simple, reliable boiler at a lower price | A step up in features and guarantee, with a version for every system | Brass and stainless steel components and a magnetic system filter in the box |
Baxi 400
The Baxi 400 is a simple, reliable boiler at a lower price, ideal for smaller homes. It comes as a combi or heat only boiler.
Baxi 600
The Baxi 600 is a step up in features and guarantee length, and there is a version for every type of system, including system boilers for homes with a hot water cylinder.
Baxi 800
The Baxi 800 is Baxi’s top range, with brass and stainless steel components and a magnetic system filter in the box. It carries the longest guarantee of the three.
Which Baxi boiler should you choose?
- Pick the Baxi 400 if you want a dependable boiler at the lowest price for a smaller home.
- Pick the Baxi 600 if you want more features, a longer guarantee or a system boiler.
- Pick the Baxi 800 if you want the best build quality and the longest guarantee.
Not sure whether you need a combi, system or heat only boiler? Read our guide to combi vs system vs heat only boilers.
Frequently asked questions
What is the difference between the Baxi 600 and 800?
The 800 uses higher-grade brass and stainless steel components, includes a magnetic system filter in the box and has a longer guarantee: 10 years against 7 years on the 600 when we fit them.
Does the Baxi 400 come as a system boiler?
No, the Baxi 400 comes as a combi or heat only boiler. For a system boiler, choose the 600 or 800.
How long is the guarantee on a Baxi boiler?
When we fit it, you get 5 years on the Baxi 400, 7 years on the 600 and 10 years on the 800, as long as the boiler is serviced every year.
Is Baxi a good boiler brand?
Baxi is one of Britain’s longest-running heating brands, and its numbered range makes it easy to choose the right level for your home and budget.
Get the right boiler for your home
Tell us a little about your home and we will recommend the right type, size and model, then give you a clear quote. See our Baxi boilers. Browse all the boilers we install or get a boiler quote.
