Baxi 400 Heat

Baxi 400 Heat Only Boiler

Heat Only Boilers

Baxi 400 Heat 

The Baxi 400 Heat has the option of a top or rear flue, making it an easy replacement for old standard efficiency boilers.

Features and Benefits

Warranty

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

Compact size

Lightweight and compact cupboard fit 

Neater finish

Rear flue option for an even neater finish 

Compatible

Compatible with market-leading Megaflo Eco cylinder
Show More
Show Less

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

F: Lower Clearance = 120mm

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...

Show more

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

Baxi 600 Heat Only Boiler

Heat Only Boiler

Baxi 600 Heat

Heat only boilers are also known as regular, conventional, traditional or open vent boilers.


Baxi 600 Heat Only Boiler

Heat Only Boiler

Baxi 800 Heat

Our Baxi 800 Heat Only boiler comes with a 10 year warranty and filter in the box.
Potterton Titanium Heat only Boilers

Heat Only Boiler

Potterton Titanium Heat

It is the perfect solution for homes that need lots of hot water or have more than one bathroom.

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

We are here to provide peace of mind for all your servicing needs.

Rest assured your service will be carried out by a qualified Gas Safe engineer, providing you with the best ongoing appliance care for your home heating system.

We offer servicing for boilers, filters, cylinders, air source heat pumps and more.

Related Articles