ANSI/ASHRAE 120-2022: Flow Resistance of HVAC Ducts and Fittings
Pressure is key for HVAC system operations, and the many factors that can adjust the airflow, thus influencing alterations in pressure, should be measured and…
ANSI/ASHRAE 103-2022: AFUE Testing of Residential Furnaces & Boilers
Most homes in the United States are heated with either furnaces, systems that heat air and distribute it throughout the house, or boilers, appliances with…
Indoor Heating – An Ancient Roman Innovation?
Numerous innovations can be attributed to the Ancient Romans. Aqueducts, concrete, newspapers, even elevators—these are just a few of the technologies that have seeped into…
ANSI Z21.10/CSA 4 (Water Heaters)
Standards within the ANSI Z21.10 (or the CSA 4) series specify guidelines for newly produced gas water heaters. These water heaters provide heating to a…