Ductulator calculats duct dimensions using equal friction method or velocity method.
Hvac duct sizing calculator online.
Calculations are for 60 f dry air at sea level from 5 to 3000 cfm approximately standard air which is 0 075lb da ft.
Rectangular duct is rounded up to the nearest 1 4 inch.
Sheet metal duct friction loss calculator.
This hvac calculator is the closest estimate to the actual manual j calculation done by hvac pros.
It will also determine round duct equivalents for rectangle flat oval and elliptical flattened round duct.
It calculates both rectangular and round duct dimensions.
Enter duct airflow cfm duct velocity fpm duct length and the number of bends.
This hvac duct sizing calculator is very simple and it calculates the duct friction loss value and air velocity inside the duct.
Ducts diameter and cross sectional area circular ducts and cross sectional areas.
Convert rectangular duct to round equivalent.
Duct velocity calculate velocities in circular and rectangular ducts imperial and si units online calculator.
This hvac load calculator quickly estimates the size of your heating and cooling system in btu s.
Duct sizing equal friction method the equal friction method for sizing air ducts is easy and straightforward to use.
In wg duct tel.
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.
An inclusive air duct calculator for diameter velocity cfm and pressure drop of various types of duct.
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.
Include fittings in the duct tel enter either.
And it shows the velocity and or static pressure loss of air for both types of duct shape.
For the more duct formulas download this all hvac calculator excel sheet in this sheet you will find all calculations of central air conditioning.
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.
Online ductulator free duct size calculator.
Metal ductboard flex size by.
The furnace s british thermal units btus will help calculate the size it needs.
Friction rate velocity friction rate.
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.
Duct roughness and air properties are adjustable and includes a metric option.
Read round duct diameter inches and friction loss per 100 of duct inches of water.
