Hvac Duct Sizing Calculator Online

Air duct also termed as ductulator is a passage that is used to provide fresh air into rooms buildings etc air ducts may be in circular square and in rectangular shapes.

Hvac duct sizing calculator online.

Rectangular duct is rounded up to the nearest 1 4 inch. Sheet metal duct friction loss calculator. Duct roughness and air properties are adjustable and includes a metric option. Calculations are for 60 f dry air at sea level from 5 to 3000 cfm approximately standard air which is 0 075lb da ft.

And it shows the velocity and or static pressure loss of air for both types of duct shape. It calculates both rectangular and round duct dimensions. Include fittings in the duct tel enter either. If ashrae 2013 is selected flexible roughness is 0 003 ft when straight and fully stretched tight at 0 compression adjusted at other compressions otherwise the.

Convert rectangular duct to round equivalent. This hvac duct sizing calculator is very simple and it calculates the duct friction loss value and air velocity inside the duct. In order for your forced air furnace to work properly you have to have the right sizes of duct vents in each room expelling air. Friction rate velocity friction rate.

The furnace s british thermal units btus will help calculate the size it needs. In wg duct tel. This hvac load calculator quickly estimates the size of your heating and cooling system in btu s. This hvac calculator is the closest estimate to the actual manual j calculation done by hvac pros.

Metal ductboard flex size by. An inclusive air duct calculator for diameter velocity cfm and pressure drop of various types of duct. It works with i p units united states united kingdom and metric units canada europe russia middle east asia. Ducts diameter and cross sectional area circular ducts and cross sectional areas.

This online air duct calculator is used to calculate the velocity of air flow feet per minute fpm and feet per second fps through any shaped circle square or rectangle ductulator with either diameter sides or area. Online ductulator free duct size calculator. It will also determine round duct equivalents for rectangle flat oval and elliptical flattened round duct. Enter duct airflow cfm duct velocity fpm duct length and the number of bends.

Duct sizing equal friction method the equal friction method for sizing air ducts is easy and straightforward to use. The duct vent size will depend on the size of the furnace and the size of your home so you know how many vents you need in each room. Duct velocity calculate velocities in circular and rectangular ducts imperial and si units online calculator. The heat load estimate is based on your climate region total square footage number of rooms or zones you want ceiling height insulation type number of windows and doors.