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

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 ...

Not long ago a residential load calculation — also known as a heat loss calculation or a load calc — was something you had the luxury of skipping. There was a good reason for avoiding it. It was ...

Using load calculations to identify the proper sized equipment can help build trust with your homeowners and differentiate your business for its competitors. This week, Drew Cameron introduces an HVAC ...

Part III of NEC Art. 220 provides requirements for the calculated load of specific applications (after covering general loads and general lighting). Do you know the types of loads that are covered ...

Based on the 2020 National Electrical Code. Part 1 of this two-part series taught you how to calculate branch-circuit loads. Now let's review how to perform feeder and service load calculations.

The 2026 HVAC and IECC code updates are reshaping how contractors design, size, and install systems. Stricter efficiency, ventilation, and documentation requirements mean old shortcuts can now cost ...