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The PDF plan that we use in the Wrightsoft fundamentals class.
Printable 5x5 graph paper- with a page for collecting information needed for load calculation. Best as 2-sided print with medium+ quality paper
Printable 5x5 engineering graph paper- graph paper only
A checklist for reviewing loads
This Excel file has calculators for determining the "settled air temp" of bypass air to help determine bypass limits for both heating and cooling as well as a "smallest zone calling" calculator.