NMU associate professor Nicholas Griewahn was quoted in a recent article that appeared in The NEWS, a leading resource for those in the HVACR (heating, ventilation, air conditioning and refrigeration) field. Griewahn is on The NEWS' Trainer Panel, composed of “some of the country’s best HVAC educators, instructors, and trainers. Their insights are used to answer technical questions from the field and suggest solutions to everyday problems." To read the article on HVAC system evacuations, click here.