WebAug 28, 2013 · Proper sizing for Supply Trunk I currently have, in the attic, a 2" duct board supply trunk, with interior dimensions of 12x20", giving an area of 240 in2. It is about 12" long, with no step down in size. This is a 2.5 ton system. According to my calculations, the correct interior size should be 10x18 (180 in2.) WebYou can never have to much return air, as a HVAC contractor you want no less than 144 square inches per ton. Regarding the 3.5 TON VS 4 TON The average square foot per Ton is 400 so say the house is 1600 SQFT a 4 TON unit should work great.The Vacuum pump pull 2500 micron is not as important as did it hold at 2500.
How To Install Return Air Duct - The Duct Kings
WebMay 14, 2008 · At a recommended filter surface area of 200 square inches per ton your current filter is sized for a 2 ton system this does not mean that your setup won't work it does mean that the system was improperly installed meaning you are not getting the air conditioning you were paying for equalling higher energy costs and shortening the life of … WebJan 5, 2009 · Recommended airflow is typically 400 cfm per ton of AC. A 3 ton AC would therefore need 1200 cfm airflow. With only 423 sq in of return your air velocity through … cvs pharmacy on richey road and 45
Duct Size for 5 ton - HVAC-Talk: Heating, Air & Refrigeration …
WebJul 1, 2015 · Most technicians are skeptical about these numbers, especially on the Return air side of the system. For instance a 2.5 ton system (Approximately 400 CFM per ton) would require (2) 14” flexible return ducts or (1) very short flexible 18” duct to move the 1000 CFM required by the 2.5 ton system. WebWritten by Chad Peterson in Duct Work In a rule of thumb sense the return duct should be the same size as all the supply ducts combined. But a rule of thumb is just an initial guide, not anything to bet your comfort on. You have to … WebJul 22, 2024 · Do your own calculations and compare them to our chart – or use the chart for quick, accurate calculations for duct size based on CFM needed for a room. One size is given for round ducts, its diameter. You have two or three options for rectangular ducts that give you the same or nearly the same square footage per duct. cvs pharmacy on preston rd dallas tx