Rules of thumb, friend, or foe?
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Find out why HVAC technicians’ rules of thumb must be based on math, not something made up or convenient, from ACCA HVAC expert Ed Janowiak.
Manager of HVAC Design Education at ACCA
Ed Janowiak is ACCA's Manager of HVAC Design Education and can be reached at ed.janowiak@acca.org or 703-824-8878.
Latest posts by Ed Janowiak (see all)
- Hey Ed, does the new Manual S® have a lot of changes? - September 10, 2025
- Hey Ed, why does Manual J® use one person per bedroom plus one in the data collection part of the survey? - September 3, 2025
- Hey Ed, does placing the outdoor unit for a HP or CAC under the house make sense if there is enough clearance above for airflow? - August 27, 2025
Posted In: Aside, Technical Tips, Technology
