Hvac Duct Sizing Calculator Free

It will automatically adjust the size to keep from exceeding the maximum manual d velocities for residential duct systems.

Hvac duct sizing calculator free. It is designed for calculating and sizing duct dimensions according to air volume cfm roughness velocity etc. Duct sizing calculator free download. It is available in si and british ip units. Office tools downloads duct calculator by marinsoft inc.

A lot of real science is included in the methods of calculation when selecting the right size central air conditioner for your home. This free ductulator calculates the exact duct size round and rectangular for the given friction rate duct type and amount of airflow. How to design a duct system. Enter duct airflow cfm duct velocity fpm duct length and the number of bends.

This ductulator uses the colebrook equation to calculate the smallest duct size acceptable for the selected friction rate and duct type that stays within the selected acca manual d recommended velocities. Flex duct 05 on most metal duct calculator round metal pipe 06 on most metal duct calculators field duct sizing chart rectangular sheet metal duct 07 on most metal duct calculators duct size duct height net inside dimension in inches round duct size estimate. In this video we ll be learning how to size and design a ductwork for efficiency. Another method for sizing air conditioners is determining the size of the air conditioner system that s currently in place.

Convert diameter to rectangular equivalent. For instance one of these methods is a residential load calculation. Read round duct diameter inches and friction loss per 100 of duct inches of water. In wg duct tel.

Friction rate velocity friction rate. This hvac calculator is the closest estimate to the actual manual j calculation done by hvac pros. Duct sizer ductulator for hvac air ducts. 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.

Convert rectangular duct to round equivalent. Rectangular duct is rounded up to the nearest 1 4 inch. Unless within 2 the diameter is rounded up to the nearest inch. This hvac load calculator quickly estimates the size of your heating and cooling system in btu s.

Includes a full worked example as well as usin. Sheet metal duct friction loss calculator.