Baxi 800 Heat

Baxi 800 Heat only Boiler

Heat Only Boilers

Baxi 800 Heat 

Our Baxi 800 Heat Only boiler comes with a 10-year warranty and filter in the box.

Features and Benefits

Warranty

10-year parts and labour warranty†

Filter included

Comes with an Adey Micro2 magnetic system filter to protect your heating system and boiler*

Compact size

Fits inside a standard kitchen cupboard and a rear flue option for an even neater finish 

Compatible

Compatible with market-leading Megaflo Eco cylinder
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Product Literature

User Guides

User Guides

Installation & Service Manuals

Installation & Service Manuals

Baxi Heat Only Boiler Dimensions

Dimensions

A: Boiler Width = 370mm

B: Boiler Height = 625mm

C: Boiler Depth = 270mm

D: Side Clearance = 5mm

E: Upper Clearance = 190mm*, 35mm* if used rear flue

F: Lower Clearance = 120mm*, 35mm* in 300m deep wall cupboard

G: Front Clearance= 5mm* in operation (500mm for servicing)

Related FAQs

What do Baxi error codes E23, E53, E133, E119 and E128 mean?

Is your boiler shut down and is showing error code E28, E53, E113, E119 or E128? Find out how to fix this...

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...

How long does a Boiler last?

Find answers to how long does a boiler last, when does a boiler need replacing, and how you can make my boiler last longer here...

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...

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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.

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Find a Boiler

Use our simple tool to find the right Baxi boiler for you.

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.

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* 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.