What Size Ductwork For 1000 Cfm

Multiply that number by the amount of cubic feet of airflow per minute cfm your type of furnace produces.

What size ductwork for 1000 cfm.

A 0 to 400 cfm fan requires a 4 inch minimum duct size but a 6 inch duct is recommended. If your hood is between 901 and 1200 cfm then you should go for a minimum duct size of 8 and if you have a 1200 cfm hood consider going for a minimum duct size of 10. Design cfm 4 cfm 6 cfm 8 cfm 10 cfm 12 60 6x4 60 4x6 90 4x8 120 4x10 150 4x12 90 8x4 110 6x6 160 6x8 215 6x10 270 6x12 120 10x4 160 8x6 230 8x8 310 8x10 400 8x12 150 12x4 215 10x6 310 10x8 430 10x10 550 10x12 180 14x4 270 12x6 400 12x8 550 12x10 680 12x12 210 16x4 320 14x6 490 14x8 670 14x10 800 14x12 240 18x4 375 16x6 580 16x8 800 16x10 950 16x12 270 20x4 430 18x6 670 18x8 930 18x10 1100. Never locate ducts at the end of the trunk line run.

For instance a 2 5 ton system approximately 400 cfm per ton would require 2 14 flexible return ducts or 1 very short flexible 18 duct to move the 1000 cfm required by the 2 5 ton system. Allocated to the duct work. Last take off run to be located 12 18 from end. Sl rectangular td.

As systems increase in efficiency the tolerances of how we have always done it will no longer be adequate. A natural draft furnace produces 100 cmf an induced furnace produces 130 cfm and a condensing furnace produces 150 cmf. 8 to 12 duct 900 to 1200 cfm 10 and up duct 1200 and higher cfm. 7 to 10 duct 700 to 900 cfm.

We also recommend a 1000 1200 cfm rooftop blower. For example for a natural draft furnace multiply 100 cmf by 100 to get 10 000. Over a 48 inch range a 54 or 60 kitchen range hood is ideal to ensure full coverage over her cooktop. Supply or return duct size capacity 09 to 10 pressure drop per 100 el cfm round no.

Asp blower static pressure component pressure drops. 1 000 14 14 x 10 18 x 8 12 x 12 1 200 14 16 x 10 24 x 8 14 x 12. But if the size of your duct matches your ventilation power your kitchen exhaust fan will do its job properly and quietly. Minimum duct size of 4 recommended duct size of 6.

Proline s prov models come with an external blower option. 1000 22 x 8 16 x 10 14 x 12 14 1000 1100 24 x 8 18 x 10 16 x 12 15 1100. Range hood duct length. 6 to 8 duct 400 to 600 cfm.

The minimum duct sizes and recommended duct sizes based on a hood fan s cfm rating are as follows. A good rule of thumb for estimating duct diameter and cfm requirements is.