2 fans on 1 extractor line?

Raindancekid

Raindancekid

Member
So my room temp is a little high so I was going to add another fan. Question is would it be more effective on the inlet or outlet line? I only have two pipes both with fans obviously so this extra fan will be added inline to existing fan.
 
FauxRoux

FauxRoux

Well-Known Member
Always have more pressure pulling FROM the room and out. Then smaller pressure pulling INTO it. The positive pressure will assist the smaller fan in pulling air Into the room by creating a vacuum.
 
Raindancekid

Raindancekid

Member
grapefruitmarmalade said:
I'm pretty sure either would be good. Can you bring in colder air?
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Yeah colder air is no problem my inlet line brings in cold air from outside. I am just thinking if I had 2 fans on 1 line would it pull the air with the 1St and just cavitat in the 2nd? I think I am gonna have to just test it on both. It's just I am in a rush as my grow has already started.
 
jijiandfarmgang

jijiandfarmgang

Well-Known Member
Raindancekid said:
Yeah colder air is no problem my inlet line brings in cold air from outside. I am just thinking if I had 2 fans on 1 line would it pull the air with the 1St and just cavitat in the 2nd? I think I am gonna have to just test it on both. It's just I am in a rush as my grow has already started.
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You don't have to worry about cavitation as no water is involved. It will work fine.

- Jiji
 
J

jayboss1

Well-Known Member
how high are temps ,your extractor should reduce some heat in your room ,,if you can add another inline fan that's brings cold fresh air in that would help yeah,
 
bird mcbride

bird mcbride

Well-Known Member
I run active intake as well as active exhaust. This way the blowers are not being overworked and make less noise. I run the blowers/fans on a thermostat accompanied by an off when on relay rated for the system involved. This way when the system shuts off or turns on the pressure stays basically constant.
 
Raindancekid

Raindancekid

Member
bird mcbride said:
I run active intake as well as active exhaust. This way the blowers are not being overworked and make less noise. I run the blowers/fans on a thermostat accompanied by an off when on relay rated for the system involved. This way when the system shuts off or turns on the pressure stays basically constant.
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Both inlet and exhaust are active the issue and original question was what line would be most effective to put another fan on? After feed back and my personal preference I am going with 2 exhaust fans.
 
E

eastcoastled

Well-Known Member
I think you need ac. With the options mentioned i would start with the outgoing side so you don't stink up your house.
 
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