Simple ventilation questions...

Ok... we all know air is important. I don't have the money ($100) for a nice 4" 190 cfm inline fan. Instead I bought a Home Depot 6" 160 cfm cheap ($2 fan. I can only have a 4" exhaust duct out of the room and no bigger. I bought this thing, hooked up a 8' 4" flex duct to the exhaust, 4" to 6" adapter to the flex duct and then a 25' 6" flex duct. I really can't feel the air flow coming out of the house. I don't have inlet vents yet but when I experienced this the door to the room was open so it should of had plenty of incoming air. Is it because of the reducer? When I run it without the duct work it seems to blow fine and hard enough... What do you think?

Btw, I can't afford the charcoal filter yet either but when I can I'll upgrade the fan to something better but for now I need this to work to cool my room. I don't care about the smell right now.

Dawg, I suspect that the fan that you bought is a booster fan. It's not going to work for what you are asking it to do. It's not useless thought. A 33' run of vent is pretty long, when you get the better fan use the booster fan on the 25' run of 6". Let the big fan push the air to the booster fan and that fan push it out of the house. I have never pushed air that far so it may be enough but, I suspect not. As for cooling the room for now I would think of another plan. Sorry and good luck!

Booster fans CFM rating is hugely inflated. The don't push much air at all - the fan is your problem.

ow.douglas said:

Dawg, I suspect that the fan that you bought is a booster fan. It's not going to work for what you are asking it to do. It's not useless thought. A 33' run of vent is pretty long, when you get the better fan use the booster fan on the 25' run of 6". Let the big fan push the air to the booster fan and that fan push it out of the house. I have never pushed air that far so it may be enough but, I suspect not. As for cooling the room for now I would think of another plan. Sorry and good luck!

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QFT Quoted for truth