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Furnace cfm

charliechicago
Member Posts: 168
Hello to all
What is the rule of thumb/how do you calculate how much cfm you need for a furnace. Like we say 400 cfm for each ton of cooling.
Thanks mike.
What is the rule of thumb/how do you calculate how much cfm you need for a furnace. Like we say 400 cfm for each ton of cooling.
Thanks mike.
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200 CFM's per 10K BTU's 80% plus ,150 CFM's per 10K BTU's 90% plus at a 55* riseThere was an error rendering this rich post.
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