Big Ass Fans 4900 115 Volt Ceiling Fan
Product Review (submitted on February 23, 2013):
We have a few very large BAF's in our factories, purchased direct over the past 10 years. They are extremely efficient, and our payback period was less than 6 months in heating gas alone. In the summer, they provide steady constant air movement removing condensation points from the heating/cooling sysle. The fas purchased here are an extraordinary value, however, they are not the typical industrial fans with 8 or 10 blades, they are a slightly scaled down version with 6 blades. The motion control is simple, one of ours needed to be reset (took 10 seconds and is explained in the manual) because the EPROM was not set properly. The gearbox looks solid enough, but this can only be known after years of service. Once concern is that we have different speeds from the fans at the same power settings. This is not a small difference, for example, at 50% speed, one looks to be turning about 30 RPM and the other is running at about 80. Maybe the frequency setting is not right on one of the controllers? These look like variable frequency drives, and more than one variable may control the power exiting the drive...if you only buy one fan, you may never know if the settings are right or wrong, in my opinion. Overall, we will buy more of these as needed, they circulate/cool areas about 10,000-12,000 square feet. We use about a dozen of them and are very happy with BAF, and Ruralking was exceptionally speedy with the delivery. You have to choose a shipping option when checking out (like Dominion freight) or there could be an issue with the shipping, but we got our fans in less than 5 days. Another review stated it took longer, but that was not our experience. When I called to check inventory, I was told that they had 50 in stock...I will buy more! Thanks!