Residential Products  >  Controls
EFC 211
Solid Fuel Fan Controller

The EFC 211 is a draft controller that is used with wood-fired appliances such as fireplaces, stoves and pizza ovens.

It consists of a control box and a speed control unit. The control box is typically installed on the outside of the chimney or inside an attic, while the speed control unit is installed in the room where the heating appliance is located. When used with a solid-fuel fired appliance a smoke detector and an audible alarm shall be installed in accordance with NFPA 72, National Fire Alarm Code.

The control constantly monitors the chimney fan operation. It measures the motor's current draw to dertermine if there's adequate draft to the chimney. It is used with RSHT and GSV fans and is for indoor installation only. Typical uses are:

  1. controlling the speed of a chimney fan used with a wood-fired fireplace or stove; or
  2. controlling the speed of a chimney fan used with a wood-fired pizza-oven in a restaurant kitchen.


  • Safety control for monitoring of solid fuel applications.
  • Use with RS-HT Chimney Fans and GSV Grease fans.
  • Easy-to-use control display
  • Light showing proper operation
  • Warning light
  • Complies with Building Codes


Power Supply 1 x 120 VAC
Max Amperage 5.8 Amps
Operating Temperatures -4°F to 122°F (-20°C to 50°C)
Speed Control Output 10-120 VAC
Warranty 2-year Factory Warranty
Listings UL378 Standard for Draft Equipment
UL508 Standard for Industrial Controls

Alternate text for products sub-image

EFC 211 Solid Fuel Fan Controller—uses a control box and a speed control unit to monitor chimney fan operation
RSHT Chimney Fan—high-temperature exhaust fan used in venting solid-fuel fireplaces, BBQs, pizza ovens and stoves
Chimney Fan - HT

This chimney fan is the guaranteed cure for smoke escaping your wood-fired fireplace, or wood, pellet or coal appliances.