Load calculations, and using software to do them, are key traits of the contractor of the future, according to a new ACCA ...

Designing a temporary heating system differs considerably from permanent installations. In early construction stages, you might face a tight roof with walls of sheet plastic, or nearly complete walls ...

This is part 1 in an ongoing series on HVAC load calculations. The folks at SNIPS have asked me to do a basic how-to article about HVAC Manual J load calculation as that is allegedly a big part of my ...

Question: How do I know what size A/C system my house needs? Answer: When considering the size of your central A/C unit, there are a few factors in play. Primarily, the size of your house is used to ...

Overview:  Room size directly affects how well your AC cools, so choosing the right capacity is essential for comfort.Picking ...

Note: This article is based on the 2008 NEC. A dwelling unit is a single structure that provides complete and independent living facilities, according to the NEC definition found in Art. 100 (Fig. 1).

Whether they're for journeymen, master electricians, or contractors, most electrical licensing exams require you to calculate residential loads and service or feeders sizes using one of two methods.