About Lopez Labs

Jerry Frisch with his clean burning Frisch Rosin masonry fireplace system (Norbert Senf on the left,, holding "2 min." sign) (1994)

Lopez Labs was started at the Everett WA shop of Lopez Quarries/Masonry Heaters.

• Between 1992 and 1995 we tested a variety of masonry heaters for several weeks every spring.
• We currently maintain the largest masonry heater performance database in North America.
• Lopez participated with two EPA accredited labs in a simultaneous field test series of masonry fireplaces at McNear Brick in California in 1995.
• In 2004 we opened a test facility at Masonry Stove Builders: 
  
  

  

• In 2015 this was expanded and became the MHA Research Laboratory
• OMNI did comparison onsite testing at Lopez Everett in 2011.
• Two MHA members visited Brookhaven National Laboratory in 2014 to participate in particulate sampling comparison testing using the Condar portable dilution tunnel.
• In January 2017, we participated with US-EPA in sponsoring testing at Hearth Lab Solutions LLC in Randolph, Vermont to help develop a fueling protocol to allow certification testing of manufactured masonry heaters. This was the first time that the Condar portable dilution tunnel has run simultaneously with EPA Method 5-G on a  masonry heater.

A number of papers have been published describing the research at Lopez Labs.