Hvac Duct Sizing Calculator Online

The furnace s british thermal units btus will help calculate the size it needs.

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. Duct velocity calculate velocities in circular and rectangular ducts imperial and si units online calculator. Sheet metal duct friction loss calculator. 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. Metal ductboard flex size by. Friction rate velocity friction rate. Read round duct diameter inches and friction loss per 100 of duct inches of water.

In wg duct tel. Online ductulator free duct size calculator. 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. Ducts diameter and cross sectional area circular ducts and cross sectional areas.

An inclusive air duct calculator for diameter velocity cfm and pressure drop of various types of duct. 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. Convert rectangular duct to round equivalent. Ductulator calculats duct dimensions using equal friction method or velocity method.

It calculates both rectangular and round duct dimensions. 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. Include fittings in the duct tel enter either. For the more duct formulas download this all hvac calculator excel sheet in this sheet you will find all calculations of central air conditioning.

It works with i p units united states united kingdom and metric units canada europe russia middle east asia. 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. It will also determine round duct equivalents for rectangle flat oval and elliptical flattened round 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. 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. Rectangular duct is rounded up to the nearest 1 4 inch.