E-Compact ‘Slim’ Outdoor Wood Pellet Boiler (15/18kW)

Fully serviceable from the front, the outdoor E-Compact ‘Slim’ outdoor pellet boiler can be installed outdoors and directly against a wall – the ideal solution for smaller homes where space is at a premium.

Fitted with weatherproof casing and frost stat protection as standard, choose between manual or automatic feeding with external fuel store.

Available in black and green, and also fitted with Woodco’s proprietary i-Gen controller.

Standard Features

  • i-Gen Controller for smart control and monitoring

  • Automatic heat exchanger cleaning

  • Automatic burner cleaning (linear actuator)

  • Sleek casing design

  • Manual hopper filling

  • Generously-sized ash pan

  • Inspection glass on burner door

  • Single Fan

  • Water Pressure sensor and draught regulator as standard

  • Energy Efficient pump

Optional Extras

  • Automatic de-ashing

  • Lambda control

  • Additional 300kg fuel storage capacity (left or right option) with cyclomatic suction system or auger filling

  • WiFi for remote control and diagnostics

Emissions 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

Energy Labelling Data 15 & 18 kW

  • Energy Class: A+

  • Energy Index: 125

  • Seasonal Efficiency: 84.6%

  • Net Efficiency – 92.8%

Previous Installations

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

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

Technical Information

E-Compact 15/18 ‘Slim’ Technical Specification

  E-Compact 'Slim' 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 'Slim' 15 1135 1074 495 150 1" 80 18
E-Compact 18 'Slim' 18 1135 1074 495 150 1" 80 18