I am trying to complete my 20’x20’x10’ tall hoop greenhouse and I could use some help sizing the exhaust fan and inlet vent. Do you use the same calculator as normal greenhouses? Would a 3,100 cfm fan be sufficient?
I have also acquired a 75,000 BTU Reznor gas shop heater but I am thinking that it’s much more heater than I really need. It would come on for shorter periods of time but are there any other problems with an oversized heater? I also have a 5,000 BTU 220Volt electric heater.
I live on the Gulf coast so I am more concerned with cooling than heating. Here are my average temperatures. http://pics2.city-data.com/w1/lha9244.png
Thanks for any help you can offer.