Cfm per ton chart. 5 x H x ACF Sensible Load 1.

Cfm per ton chart Returns are located on inside walls. 25 sq. . 5 x H x ACF Sensible Load 1. ft. 80 to . 3. Duct Work Supplies are located on outside walls. Feb 7, 2025 · A common estimate is 20 CFM per square foot of room space, but factors like insulation, ceiling height, and occupancy can affect this. Whether you are working on an industrial AHU system, or determining how many tons are needed for a commercial building, the CFM to Tons Calculator is an invaluable resource for HVAC planning and optimization. Now, it is important to understand when the 400 CFM per ton rule of thumb should not be applied. 80 = 21º TD High humidity = 350 CFM/ton SHR . However, variations exist based on climate and system design. 85 = 17º TD Low humidity = 450 CFM/ton CFM = Total Heat Equation CFM = BTU/Hr 4. TC = Total Capacity in MBH When Cooling: You must have 400 CFM of air flow per Ton of A/C (1 Ton equals 12,000 BTU) Approximately 1 CFM of air is required to heat or cool 1 to 1. of floor area. The 2400 CFM row represents 400 CFM per Ton as follows 6 Tons x 400 CFM/Ton = 2,400 CFM. 08 x TD x ACF Friction Rate *used in duct calculators Friction Rate = Pressure Drop is the available static pressure Nov 5, 2024 · Using a CFM per ton chart or this tool, you can ensure proper sizing of air conditioning units, improving energy efficiency and comfort. Example: A 5-ton unit requires 2,000 CFM airflow. Why is 400 CFM per Ton of Refrigeration used? This is a standard rule in HVAC that assumes normal humidity levels and typical system efficiency. A 3-ton unit requires 1,200 CFM airflow. Apr 26, 2024 · We show the CFM settings for this chart at 2400 which corresponds to 400 CFM per Nominal Ton. 4. humidity = 400 CFM/ton SHR above . This chart is quite simple to read. May 31, 2023 · This guide includes these rule-of-thumb resources: a Unit Sizing Chart with sqft per ton and CFM per ton, Duct CFM Chart with round duct to square duct conversions, and example system, as well as links to calculators to help with final figures – everything you need to know to correctly size a residential HVAC system. 85 = 19º TD Ave. They should not be located in the same area as the furnace, nor SHR below . trkzy exktt meulb ozgyansz zmn xclc pqbki tmtlsf hxf wzdlq