Cooling Power vs. Airflow and Duct Sizes

Typical values for tons cooling vs. air flow and duct sizes are indicated below:

Cooling Power (ton)	Typical Air Flow (cfm)	Typical Duct Size (in)
		Circular	Rectangular
	100	6	5 x 6	4 x 8
1/2	200	8	6 x 8	4 x 12
3/4	300	9	10 x 7	5 x 14
1	400	10	8 x 10	6 x 14
1 1/2	600	12	10 x 12	8 x 14
2	800	13	10 x 14	8 x 18
2 1/2	1000	14	10 x 16	12 x 14
3	1200	16	10 x 20	12 x 16
3 1/2	1400	16	12 x 18	10 x 20
4	1600	18	14 x 16	12 x 20

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