E-Compact ‘Slim’ Pellet Boiler (15 & 18 kW)

Woodco E-Compact 'Slim' Indoor wood pellet boiler

The E-Compact Slim indoor pellet boiler is perfect for homes where space is at a premium. Designed with a smaller footprint, your service engineer has full access from the front of the boiler and so can be discreetly installed against a wall.

With its subtle design and sleek casing, the E-Compact ‘Slim’ boiler is the ideal choice for modern homes. Easy to use, with automatic burner and heat exchanger cleaning as standard. 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

  • 5-year boiler warranty*

  • 2-year warranty on electrical parts*

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%

*Subject to conditions.

The ‘Slim’ model boiler is also available as an outdoor boiler, with weatherproof casing – an ideal solution for those who have more limited space.

For an even more hands-off experience, install the E-Comapct ‘Slim’ boiler with one of our external fuel stores and automatic auger feeding. See more on fuel transport and storage systems here.

Previous Installations

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

Technical Information

  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

E-Compact 15/18 ‘Slim’ Technical Specification

E-Compact 15/18 'Slim' 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