Baxi 800 Combi 2

Baxi 800 Combi 2 Boiler - Gas Electric Combi Boilers

Combi Boilers

Baxi 800 Combi 2

Manufactured in the UK, the Baxi 800 Combi 2 has a 10-year parts and labour warranty†. It fits neatly in a standard kitchen cupboard or anywhere else in the home as it works so quietly! It’s compatible with the Baxi uSense smart control, so you can operate it wherever you are, using your phone or tablet.

Features and Benefits


10-year parts and labour warranty† for complete peace of mind

Filter included

Includes an Adey Micro 2 Filter* to protect your heating system and boiler  

Easy top up

EasyFill makes it easy to top up the central heating system pressure without having to call an engineer  

Ready for winter

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

Fuel types

Works with natural gas or LPG, without a conversion kit  
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Product Literature

User Guides

User Guides

Installation & Service Manuals

Installation & Service Manuals

Energy Labels

Baxi Duo-tec Compact Combi Boiler Dimensions


A: Boiler Width = 390mm

B: Boiler Height = 700mm

C: Boiler Depth = 285mm

D: Side Clearance = 5mm

E: Upper Clearance = 178mm

F: Lower Clearance = 200mm

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 engineer to give you a free, no-obligation quote on a new boiler or cylinder service or repair.

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.

Baxi at Home Blog

* The Adey Micro 2 Filter must be installed and registered at the same time as your boiler for your 10-year warranty to be valid.