Baxi 400 Combi 2.1

Baxi 400 combi 2-1 Boiler - thumbnail

Combi Boilers

Baxi 400 Combi 2.1

Extremely quiet, compact and lightweight, the Baxi 400 Combi 2.1 boiler can be installed virtually anywhere in your home.

Features and Benefits

Warranty

5-year parts and labour warranty for peace of mind†

Fuel types 

Works with natural gas or LPG, without a conversion kit

Ready for winter

Pre-heated condensate trap to help prevent freezing in winter – less risk of frozen condensate pipes!

Pressure gauge

External analogue pressure gauge for easy self-top up, reducing the need for engineer call outs

Smart thermostat

Compatible with Baxi uSense smart thermostat, which you can control using an app on your phone
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Product Literature

User Guides

User Guides

Installation & Service Manuals

Installation & Service Manuals

Energy Labels

Baxi b-basic-dimensions

Dimensions

A: Boiler width = 395mm

B: Boiler height = 700mm

C: Boiler depth = 285mm

D: Side clearance = 2.5mm

E: Upper clearance = 178mm

F: Lower clearance = 150mm

G: Front clearance = 5mm in operation (450mm for servicing)

Related FAQs

Can I still replace my old gas boiler?

Yes, you can replace your existing gas boiler but you don’t have to do this before 2025. Find out more at Baxi's FAQ section...

What is the Boiler Upgrade Scheme?

Find out everything you need to know about Boiler Upgrade Scheme and if you eligible for the Boiler Upgrade Scheme.

Should I turn off my boiler in the summer?

Is it ok to turn off your boiler in summer? The short answer is: it depends on your home and your circumstances. Find out more...

Why should I have a filter fitted?

Many boiler breakdowns occur are due to sludge in the heating system. Find out the many benefits of fitting a magnetic filter & how it can save you money.

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Find an Installer

Simply enter your postcode and find a local, trained, Gas Safe registered (where applicable) engineer to give you a free, no-obligation quote on a new boiler, cylinder or air source heat pump installation.

Related Products

Save £7,500 with the Boiler Upgrade Scheme

If you are upgrading your heating system, have you considered installing an air source heat pump? Right now, you could be eligible for a grant of £7,500 to help with the installation cost.

Book a Service

Have you missed your boiler service, or if your boiler service is due shortly? Book a service now, or sign up to spread the cost with one of our maintenance plans.

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