Through reverse engineering air handlers, David Monson of Armstrong Duct, Vent, Hearth and Home has developed a tried-and-true process for restoring everything from small to large air handlers. He ...

SHELBYVILLE, Ind. — Knauf Insulation and the Greenguard Environmental Institute announced that Knauf’s air-handling insulation products have been certified for superior indoor air quality (IAQ) ...

Nelson Mechanical Design was asked to investigate an underperforming chilled water system at a large home overlooking the south coast of Martha’s Vineyard. The installing contractor had been let go ...

Dear Jerry: I enjoy getting tips from your informative columns. We are trying to prepare our home for comfort in our old age. This summer we had the sill plate sprayed with foam insulation, and this ...