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 ...

SOLAR: Solar heat gain through glass facades is among the inputs that ASHRAE Standard 183 requires engineers to model in three dimensions. June 3, 2026 Here is something I have noticed presenting at ...

Space load calculations for cold-air distribution systems are, in most respects, the same as for conventional designs. This subject is covered thoroughly in chapter 26 of the 1993 ASHRAE Handbook ...

It is mandatory that refrigeration load calculations be performed during the design stage in order to properly size the components. Load calculations are useful on other occasions as well, such as to ...

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.

When designing power distribution for a facility, you must assume a lighting load no less than that in Table 220.12 [220.12] if the table specifies your occupancy. Should you use this table for work ...