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

Product Documentation

No documentation available.

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

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.

Why should I get the water in my central heating system cleaned?

If Boiler breaks down due of sludge in the system, the repair work is not covered by the Boiler warranty & can lead to expensive repair bills. Read more...

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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.

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

* 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.