CX1600 Gable Mount Power Attic Ventilators with 4.5-Amp 60-Hz Motor and 14-Inch Blade

Works great, easy to install, good price, came quickly.

Quality is mid-range, moves fair amount of air, but is noisy even with rubber mounts.

I like everything about this product. It works, easy set up and it’s cooler on our upper floor. Very happy

Easy install, balanced running with minimal noise.The only thing I noticed about the thermostat, is the window for on/off is about 10 - 20 degrees. Its a mechanical one, so its not going to have the same resolution as a digital one. So, if you set it too low, it will never turn off if you attic never goes below your set temp. Best way to set it, is to wait for the attic to cool to the point you want as the lowest temp, and turn it down till it turns off. this is your new shut off point, anything lower will always stay off. it leaves quite a bit of headroom for turning on, so if you set to 65 degrees off, it will probably turn on at about 75 to 80. Perfect.

if you need to pull air, this will do it.Too bad it doesn't come with a humidistat as well, that would be handy for winter/humid environments2018 - 2023 update:Unit is finally showing signs of failing after constant use for 5 years. Started grinding and making loud noises, looks like the motor is failing. Added a humidistat back in 2019, haven’t had to touch it since, attic has zero moisture issues even with the rainforest surroundings we have. Will be purchasing again and doing direct replacement.

Works great. My bedroom temperature dropped by 2 degrees after 1 day of use. Clearly, my attic ventilation needed some powered help, and this did the trick.Pros:- Uses only 2.1 amps, which is a lower power draw than it's lower capacity siblings. Given my cost of $0.0995/kwh @ 12 hrs/day x 90 days a year (I am over-estimating usage here), this only costs about $20 a year to run. It also means that I could be saving $5-$10 a year over the higher amp models, so the upgrade will eventually pay for itself.- Easy enough to install.- Made "well enough". It's not rock solid, but given the choice, I would not pay more for higher build quality. It arrived double boxed, so nothing was bent. Once it's mounted, it's solid and sturdy.- Much nicer than what I saw in the big home centers, for less money.Cons:- I would have preferred a longer thermostat cable. As it is, there isn't really even an extra 2 inches. If your gable vent is 6 or 8 feet off of the floor of your attic, you will want to extend the cable so the temperature can be more easily adjusted.Neutral Comments:- There is no humidistat. You can buy a separate one if you need it, but I didn't.- It makes noise. I'm not going to call it "noisy", because I don't think it's louder than other options, but it just needs to be known. I can hear a hum in my bedroom (directly below the fan), but not in other rooms. I can also hear it while outside my house on the side that has the fan, but again, it's not distracting.Installation:- CX2500, with included mounting hardware- 2 ft x 2 ft 3/4" plywood square- Enough 2" x 2" pine boards to act as a continuous spacer between the plywood and the frame of the gable. This holds the fan another 1.5" or so away from the gable shutter. It's not necessary, but I figured being set back a bit would give me extra flexibility with how far I mounted the fan into the plywood hole.- 4 of the following: 1.5" bolts with the correct nuts and lock washers, 1" metal fender washers, 1/2" metal washers, 1" rubber washers, and rubber spacers. The rubber spacers were actually made for popping into a sheet metal hole to protect wires, so they are about 1/4" thick.- Wire, and anything else you need to hook up the electricity.I used the mounting hardware above so the mounts would be somewhat isolated from the plywood. The thicker rubber spacer sits between the fan L bracket and the plywood, acting as a cushion. The bolt + washer slides through, and on the back I use the big rubber washer, big metal washer, and nut/locking washer. I don't know how necessary it was, but it cost me $5 at Lowes and certainly won't hurt with reducing vibrations. If I installed a bunch of these, I might do a side-by-side comparison, but I did not want to spend any more time in my attic than I had to.I would also recommend that you do as much as possible outside of your attic. I had everything measured exactly, so I could do most of the work in my garage. I even pre-drilled my mounting holes and sunk the screws half way. This meant I didn't drop screws into 12" of attic insulation, or try to start a screw while holding up the rather heavy assembly.

It seems like most of the other reviews are pretty fair and accurate. I installed the fan without incident, and it worked fine. I can hear it turning on and off through the day, so the temp setting is working correctly. I haven't taken any precise measurements to be able to say how big a difference it's making, but it turns off and on through the day with it set to 100. In Florida in August that would tell me it's working pretty well! When I went up to check on it and make sure I didn't have any water stains from leaks, it was ALOT cooler than when I was installing it.It is true that the blades hit the housing pretty easily. The housing is just a steel tube, so it makes sense there is a bit of flex. When you mount it, take care to pull it into a shape that allows clearance all around. It's not that hard to do. The mounting brackets are slotted, so it's very easy to attach it loosely then make adjustments as needed.I don't find it loud at all. Maybe folks that are in a part of the country that doesn't require central A/C would not be used to the noise? Not sure! I can hear it running, but it's not even half as loud as my A/C's air handler when it's on, so I think it's reasonably quiet. That being said, it's not a precision balanced motor, so there definitely is some noise and vibration, I just think it's perfectly acceptable and within reason.If this lasts a while, then I'll be very pleased. I'm giving it 4 stars out of 5 because I think there is enough vibration that it won't last more than a year or two. (and I don't look forward to going into the attic to replace it!) If it proves me wrong, I'll raise it to 5 stars.Follow up 12/26/2012: Running just fine. No problems at all.Follow up 1/27/2015: Still running fine!