Oil pressure controls, oil failure controls, oil safety controls… They’re a pain in the neck when they trip, and diagnosing those problems can really tax even the best of techs. As semi-hermetic compressors get larger, they can no longer rely on simple splash or “sling” type lubrication strategies where oil is just flung around inside […]

There is so much to consider on any sort of design project, and HVAC system design is no exception. Unfortunately, the priorities of engineers, builders, customers, and HVAC contractors don’t always align when it comes to designing and installing the “ideal” HVAC system. On the one hand, the customers may prioritize aesthetics; they don’t want […]

Fenestration is a fancy architectural term that means “openings in the outside of the building.” You will see this word a lot when you read ACCA manual J or when you are doing a manual J load calculation. Fenestration loads include heat losses and gain through windows, doors, skylights, etc., and they can make up […]