Is a 300cfm duct booster enough for a 600HPS w/ enclosed hood?

Budley Doright

Well-Known Member
Static pressure. A booster fan is only to help the air get through longer ducts.

I guess in the perfect situation it could work but a good online fan with a speed controller a bit oversized will give you good climate control.

For temp and humidity.
So what's your point? That they overcome high static pressure, that's typically a good thing isn't it? Not saying an inline is not a good choice, the question I asked is why don't they work :).
 

MichiganMedGrower

Well-Known Member
So what's your point? That they overcome high static pressure, that's typically a good thing isn't it? Not saying an inline is not a good choice, the question I asked is why don't they work :).
Booster fans are not designed to overcome static pressure. In other words. They are designed to help move along already moving air.

And inline type fan or a mixed flow style are designed for the job.

The cfm rating is only good in a booster fan of the air is already pushed. Most likely pushed by an inline fan.

Like a furnace and house ductwork. The farthest bedroom has less heat blowing so a booster fan is installed to pick up the lost flow.

Make sense?
 

Budley Doright

Well-Known Member
Booster fans are not designed to overcome static pressure. In other words. They are designed to help move along already moving air.

And inline type fan or a mixed flow style are designed for the job.

The cfm rating is only good in a booster fan of the air is already pushed. Most likely pushed by an inline fan.

Like a furnace and house ductwork. The farthest bedroom has less heat blowing so a booster fan is installed to pick up the lost flow.

Make sense?
No it doesn't lol, they are meant to over come the restriction in the long runs, I'm talking about the wheel type as well and not the propellor type, that may be where the confusion is. High pressure drop is the issue and they are designed to over come that, elbows and such. The cfm rating has nothing to do with the air coming before it from the furnace, how can they rate the cfm's fepending on the air upstream, when it could be 5 cfm or a 100 cfm? They are rated at the amount of air they can actually move but yup it decreases as that restriction increases, same with all fans. Again it depends on the design, prop types are shit, wheel types are made for duct applications.
 

MichiganMedGrower

Well-Known Member
No it doesn't lol, they are meant to over come the restriction in the long runs, I'm talking about the wheel type as well and not the propellor type, that may be where the confusion is. High pressure drop is the issue and they are designed to over come that, elbows and such. The cfm rating has nothing to do with the air coming before it from the furnace, how can they rate the cfm's fepending on the air upstream, when it could be 5 cfm or a 100 cfm? They are rated at the amount of air they can actually move but yup it decreases as that restriction increases, same with all fans. Again it depends on the design, prop types are shit, wheel types are made for duct applications.
Ok. I don't know what a wheel type is.

I thought we were talking about a regular $35 Suncourt duct booster fan.
 
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