New inspection article: Building Cavities Used as Supply or Return Ducts

Although it’s common practice to use various building cavities within a house as supply- and return-air ducts, this can actually cause an HVAC system to work harder because these seemingly convenient locations are notoriously prone to leaks. ¬†Learn how this happens and what to advise your clients, especially those building new homes, in our new article: ¬†Building Cavities Used as Supply or Return Ducts.