How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Phil Your Own Question
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

Second opinion] - how do I know what mu furnace cfm is, I am

Customer Question

Second opinion] - how do I know what mu furnace cfm is
JA: Did you check the furnace's filters?
Customer: I am trying to figure what I need for duct sizes and from what I gather I need to know what the furnace puts out
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: the furnace is 80000 BTU with 73000 net
Submitted: 9 months ago.
Category: HVAC
Expert:  airheatman replied 9 months ago.

I will need model on the unit as there are many variables.One 80K may provide up to 1600 cfms while another only 1120 cfms.