Many HVAC professionals are familiar with the use of open filter racks. Open filter racks are often installed to allow for easy filter access by exposing an inch or so of the filter. The problem with ...

The HVAC filter system for a building is a point of defense in protecting against contamination. Accidental contamination (Legionnaires' disease, mold) or deliberate terrorist contamination (anthrax, ...

Running your furnace, central air, or heat pump probably constitutes a big part of your utility bill. But it’s a small, often inexpensive part—the air filter—that keeps these heating and cooling ...