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

          Product Documentation

          No documentation available.

          Installation & Service Manuals

          Installation & Service Manuals

          Product Documentation

          No documentation available.

          Energy Labels

          Energy Labels

          Product Documentation

          No documentation available.

          Baxi 400 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

          Should I turn off my boiler in the summer?

          Instead of turning off your boiler completely during the summer, when you likely have less need for heating, you can use Holiday Mode to ensure it works at a low level and prevent parts from seizing up later on in the year when you have greater need. You can also set your boiler to only heat your water and not your radiators.

          Is a condensing boiler a combi boiler? 

          Most modern combi boilers are condensing models. This means the heat and gases that escape through the flue pipe are captured and reused for efficiency.

          Why is my external condensate pipe freezing?

          Condensate pipes can freeze due to extremely low temperatures or ice building up on the pipe, which will need clearing in order to unction effectively. Insulating your pipe can prevent this from happening.

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

          It’s important to have the water in your central heating system cleaned regularly to prevent sludge buildup, which can lead to blocked pipes and ultimately, cause breakdowns. Repairs needed as a result of sludge are not covered by Baxi warranties.  

          Show more

          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

          Help keep your heating working as it should with a Baxi service. We offer servicing for boilers, filters, cylinders, air source heat pumps and more.

          Related articles