E-Compact ‘S’ Outdoor Wood Pellet Boiler (15, 18 & 28kW)

The External E-Compact S-Model outdoor wood pellet boiler is fitted with weatherproof casing and frost stat protection to ensure the same excellent performance and efficiency as the indoor model.
Available in outputs of 15, 18 and 28kW, each with a 100kg integral pellet store. Save space indoors by installing this neat outdoor wood pellet boiler in your back garden, or adjacent to the wall of your house. Also available with i-Gen controller.

Standard Features

  • Automatic burner cleaning as standard

  • Automatic heat exchanger cleaning as standard

  • Ceramic ignitor (as standard)

  • Plastic-moulded lid

  • Energy-efficient variable speed pump, as standard

  • Fitted with frost-stat for weather protection

Energy Labelling Data 15 & 18 kW

  • PM mg/m3 @10% O2: 37.5

  • OGC mg/m3 @10% O2: 1.2

  • CO mg/m3 @10% O2: 154.7

  • NOX mg/m3 @10% O2: 182.7

Emissions Data 28kW

  • PM mg/m3 @10% O2: 15.9

  • OGC mg/m3 @10% O2: 1.3

  • CO mg/m3 @10% O2: 148.1

  • NOX mg/m3 @10% O2: 168.6

Energy Labelling Data 15 & 18 kW

  • Energy Class: A+

  • Energy Index: 125

  • Seasonal Efficiency: 84.6%

  • Net Efficiency – 92.8%

Energy Labelling Data 28 kW

  • Energy Class: A+

  • Energy Index: 122

  • Seasonal Efficiency: 85.1%

  • Net Efficiency – 92.8%

Previous Installations

Here are some of our previous installations – click to enlarge.

Technical Information

  E-Compact 'S' Technical Specification  
  Model Boiler Rated Output Height Width Depth Weight Tappings Fuel Capacity Water Content  
  (kW) (mm) (mm) (mm) (mm) (kg)   (kg) (ltr)  
E-Compact 15 'S' 15 1099 600 920 160 3/4" 180 18
E-Compact 28 'S' 28 1099 600 1000 160 3/4" 180 24

E-Compact 15/28 ‘S’ (External) Technical Specification

External E-Compact 28 Technical Specifications

i-Gen Controller

Woodco "i-Gen" controller for smart monitoring and control

All of our domestic wood pellet boilers are available with our new i-Gen Controller. Combined with smart technology, the i-Gen Controller allows you to easily control and monitor the performance of your boiler, for improved efficiency.

The ultimate in boiler control, and combined with smart technology,  the i-Gen enables ‘out of the box’ installation with fuzzy logic PID control, meaning the commissioning process is greatly simplified.


  • Access your monitoring platform on desktop or mobile

  • 7-day programming

  • Reminders to clean your boiler’s ash pan and to schedule services send directly to your inbox

  • Low fuel level notifications

  • Comprehensive fuel usage reports

  • Remote access via WiFi for support from our technical team if required

  • Fuzzy logic PID control, for quick and easy commissioning

Smart home heating