Asked by: Thea Hintersehr
Asked in category: home and garden, indoor environmental quality
Last Updated: 28th May 2024

How many tons are in a duct?

According to a rule of thumb, ducts should be able to carry 400 cubic feet per hour (CFM), air for every one-ton cooling. For a two-ton system, ductwork should be able to carry 800 CFM.



How many vents are there in a ton?

Static pressure recovery is concerned with the pressure recovery from the duct's inlets and vents. According to a rule of thumb, ducts should have 400 cubic feet per hour (CFM), of air for every 1 ton cooling.

How can you determine how big your AC unit is? To calculate your AC unit's total tonnage, divide the number by 12, which is 12,000 Btu/hr or one ton cooling capacity. Here are the numbers and the corresponding tonnage if you don't like to do the math: 18 = 1.5 tons. 24 = 2 tons.

This is the size of an air duct I will need.

Divide the number vents by how many square footage each room has. Each 100-square-foot or smaller room will require at least one vent. Every room larger than 100 square footage will require two to three vents.

What is the CFM of a 2 tonne unit?

800 cfm