Sounds like I need the bigger fan! When I bought the duct fan I also bought a speed controller. The directions said I should NOT use the speed controller with the duct fan which is fine. I got the duct fan and 4" filter from HGT Supply. Question - Will the speed controller work with most 4" higher speeds fans other than HGT's ? Seems like it would. It just plugs in with a regular house plug. I see many other fans cheaper on ebay. But HGT's have a 5 year warranty. Should I really care about the warranty? Quality is more important to me.
Thx for the response!
Thx for the response!