Hearth Products

The Hearth Products Division works with manufacturers that sell both Gas and Wood Burning Appliances. These appliances fall under a listing program and use the PFS mark on the product(s). The Hearth Products Division evaluates and certifies that the appliances conform to the applicable national, state and/or Federal standard(s) for both the United States and/or Canada. This program provides Hearth Product manufacturers with an acceptance that is recognized in the Industry and that building code officials, architects, engineers, designers, and specifiers know and trust.

Some examples of products certified include:

  • Factory Built Wood Burning Fireplaces
  • Free Standing Wood and Coal Burning Stoves
  • Vented and Vent Free Gas Fireplaces and Stoves
  • Vented and Vent Free Gas Log Appliances
  • Pellet Burning Appliances
  • Gas and Wood Burning Fireplace Inserts
  • Outdoor Decorative Gas Appliances
  • Outdoor Gas Grilles and Accessories
  • Outdoor Gas and Wood Burning Fireplaces
  • Pellet or Wood Burning Fireplace Inserts
  • Pellet or Wood Burning Fireplace Heaters


PFS TECO is accredited by the following organizations:

  • US Environmental Protection Agency (EPA)
    • Certification of Wood Heaters
    • Standards for Performance for New Hydronic Heaters and Forced Air Furnaces
  • International Accreditation Service (IAS)
    • ISO/IEC 17020:2012 Inspection Bodies
    • ISO/IEC 17025: 2005 For Testing and Calibration Laboratories (Wisconsin)
  • California Air Resources Board (CARB)
    • Third Party Certifier – Control Measures from Formaldehyde Emissions from Composite Wood Products
  • Standards Council of Canada (SCC)
    • ISO/IEC 17065:2012 Product Certification

For a complete list, please visit our accreditations page.

New Services at PFS TECO

Special Research Projects

  • Air Quality Related Research Projects (Federal/State Governments and Local Air Quality Agencies)
  • Manufactured Fuels Comparative Emissions Testing (wax/fiber firelogs, compressed logs, firestarters, pellet fuels)
  • Custom Third Party Performance and Safety Evaluations of Manufactured Fuels
  • California Charcoal Ignition Method Compliance Certification Testing - Rule 1174
  • Creosote Removal Product Evaluations
  • Chimney Fire Suppression Product Evaluations

Accredited Auditing Agency for Densified Biomass Products (pellet fuels and compressed firelogs)

Key Dates

  • November 2010: Dirigo Laboratories incorporates and starts business
  • January 2011: EPA accredited for Methods 28, 28 OWHH
  • October 2013: Receives accreditation for:
    • ISO 17020:2012 Inspection Bodies
    • ISO 17025: 2005 Testing and Calibration Laboratory
    • ISO 17065: Product Certification
  • December 2017: PFS TECO acquires Dirigo Laboratories (Read full Press Release)

To learn more about the certification and testing services available for the hearth products you manufacture and market, please contact:

John Steinert
General Manager of Hearth Products

503.650.0088  • 

Wayne Terpstra
Director of Hearth Products

608.839.1085  • 

Dan Shoman
Director of Hearth Products Engineering

972.489.6017  •