Baxi EcoBlue Heat

The Baxi EcoBlue Heat is the perfect replacement for your old conventional boiler. It's compact design and light weight (20kgs) make it quick and easy to install.

The EcoBlue Heat doesn't require a pump overrun or permanent live, which means less hassle and a quicker, neater installation

For your peace of mind we are offering the Baxi EcoBlue Heat with a 2 year warranty* as standard.

Customer Reviews

EcoBlue heat
Get a quote

Find an approved installer near you for a no obligation installation quote

Which boiler do I need?

boiler icon

Our Find a Boiler tool makes it easy to choose the right boiler for your home.

Use the find a boiler tool

  • Available in outputs of 12kW, 15kW, 18kW, 21kW and 24kW so there is a model to suit the heating and hot water needs of almost any property
  • Comes with a 2 year warranty as standard*
  • Weighing less than 20kg, it is the lightest boiler available in the UK today
  • Compact size is perfect where space is limited
  • No pump overrun required, meaning this boiler will directly replace any existing heat only boiler
  • Made with high quality Baxi Genuine Parts
  • Rigorously tested to meet our exceptional quality control and reliability expectations.

*Subject to registration and an annual service. Terms and conditions apply.

Please note: warranty and purchasing information on this site applies to the UK only. For information on how to buy these products in the Republic of Ireland, please visit Baxi Potterton Myson.

EcoBlue HeatA: 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, 800mm for servicing

View product specification

When clicked this will open the product specification in PDF format.

    View video guides

  • Top central flue for easy replacement for existing boilers
  • No pump overrun or permanent live required minimising disruption for the homeowner
  • Positive fix wall mounting plate for easy installation
  • Industry leading choice of flue lengths, bends and accessories, allowing for versatile siting
  • Front and side access means that servicing is easier and quicker, and no special tools are required
  • One metre lead provided for ease of installation and no need to access the control box

Baxi EcoBlue Heat ErP 12 15 18 21 24
Sales code Boiler only 7219522 7219523 7219524 7219525 7219526
Operating mode selector switch with reset Yes/no Yes Yes Yes Yes Yes
User adjustable CH temperature Range - e.g. 30ºC to 80ºC (+/- 5ºC) Yes Yes Yes Yes Yes
LED status/fault diagnosis display Yes/no Yes Yes Yes Yes Yes
SAP 2009 Annual Efficiency (PCDB/SEDBUK) % 89.2 89.2 89.2 89.2 89.1 
NOx class 1-5 5 5 5 5 5
ErP Product Information
NOx  mg/kWh 18 20  21 23  24 
Sound Power Levels, Indoors   LWA dB 32 33  34  35  37 
Space Heating Efficiency Class   
Heat Input CH  kW max gross (QnHs) 14.88 18.32  21.75  24.04  28.62 
 kW min gross (QnHs) 8.59  8.59  8.59  8.59  8.59 
Heat output CH (non condensing) kW max (Pn) 13 16 19 21 25
kW min (Pn) 7.5 7.5 7.5 7.5 7.5
Gas supply pipe size (mm) 22 22 22 22 22
Inlet supply pressure (natural gas) mbar 20 20 20 20 20
Maximum gas rate m3/hr 1.42 1.75 2.07 2.29 2.73
Mechanical and hydraulic
Compartment ventilation required No No No No No
Flow / return pipe size (mm) 22 22 22 22 22
Condensate discharge pipe (mm) 21.50 21.50 21.50 21.50 21.50
Electrical supply Volts / Hz 230C / 50Hz 230C / 50Hz 230C / 50Hz 230C / 50Hz 230C / 50Hz
Permanent live required Yes/no No No No No No
Switched live Yes/no Yes Yes Yes Yes Yes
Electrical power cable fitted as standard 1m of 3 core Yes Yes Yes Yes Yes
Power consumption Watts 17 20 23


External fuse rating Amps 3 3 3 3 3
Internal fuse rating 1.6T 1.6T 1.6T 1.6T 1.6T
Boiler IP rating (electrical protection) Approval category IPX4D IPX4D IPX4D IPX4D IPX4D
Pump overrun Yes/no No No No No No
Concentric flue system
Standard telescopic concentric flue Length in mm 315-500 315-500 315-500 315-500 315-500
Horizontal concentric (60/100mm) Max equivalent length (m) 6 6 6 6 6
Reduction per 135º bend (m) 0.5 0.5 0.5 0.5 0.5
Reduction per 93º bend (m) 1 1 1 1 1
Horizontal concentric (80/125 mm) Max equivalent length (m) 12 12 12 12 12
Twin pipe flue system
Horizontal twin tube (80/80mm)

Max equivalent length (both tubes in parallel) (m)

9 9 9 9 9
Reduction per 135º bend (m) 0.25 0.25 0.25 0.25 0.25
Reduction per 93º bend (m) 0.5 0.5 0.5 0.5 0.5
Installer lift weight Max (kg) 19.5 19.5 19.5 19.5 19.5
Gross packaged boiler weight (kg) 21.5 21.5 21.5 21.5 21.5

You can reduce your energy bills and increase the performance of your heating system by adding one ore more of our accessories.

For more information please speak to your installer as they will be able to advise you on the controls that are right for you.


You can download product literature here:

  • Baxi EcoBlue ErP range guide (PDF 3.69MB, 14/06/2017)
  • Baxi EcoBlue Heat ErP installation and servicing manual (PDF 14.37MB, 20/06/2017)
  • Baxi EcoBlue Heat ErP homeowner guide (PDF 0.68MB, 22/01/2016)
  • Baxi EcoBlue Heat ErP user guide (PDF 0.60MB, 24/11/2016)
  • We don't sell our products directly to consumers which is why our prices aren't on our website.

    Find out more
    Find a boiler

    Find a boiler

    If you are unsure of what boiler you need, try our Find a boiler tool. It will ask you a few questions about your heating and hot water requirements and recommend a suitable gas boiler.

    Find a boiler
    Find an installer

    Find an installer

    We have Gas Safe Registered installers all over the UK who will be able to give you a quote for the installation of your new boiler. Simply enter a few details into our Find an Installer tool and we'll contact them on your behalf. The installer will get in touch to arrange a site survey and give you a competitive, no obligation quote.

    Find an installer

    We offer free product training at our training centres across the UK for installers who want to get hands-on with Baxi boilers.


    From construction and installation to functions and features, our expert trainers will give you a complete understanding of working with Baxi boilers.

    Sign up for our free training
    Find a boiler
    About the boiler types
    Find an installer

    How to buy information
    Baxi's product range

    Download guides and brochures to learn more about your Baxi product

    Learn more about Baxi products by downloading user guides, brochures and heating system installation instructions from our Literature library.

    Download documents