SuncourtThruWall Room-to-Room Transfer Fan — Quiet Through Wall Vent Fan Improves Air Circulation Between Rooms 100-275 Sq. Ft. | 10’ Power Cord, 2-Speed (TW408)

Works great! Easy install in typical interior drywall structure. Very quiet and moves air from equipment closet well.I modified to reverse the flow, so it blows away from the cord.How i did it: pop off the grill cover with the switch (use narrow flatblade to disengage 3 clips), remove fan blade (it pops off, pull at the hub so you don't break blades), remove two bolts holding motor to bracket, slide out armature (drive shaft), rotate motor frame 180⁰, reinsert armature (long shaft away from grill side, to accept fan), snap on fan blade, snap on grill cover (adjust wires as required to avoid contact with moving parts, ziptie if needed). Do at your own risk (I work with mains power often, but no wiring is needed here)!!! Also, light machine oil on bushings. No clue how/if this will affect longevity.

I bought three (3) of these Thru-Wall fans for our cabin at the lake. We have a fireplace in the living room and electric baseboard heaters throughout the cabin but no central air so no way to circulate the air between the rooms in the cabin.I wired these fans up to Z-Wave light switches and control them with my Ion Security System and Home Automation App. The fans come on automatically at preprogrammed intervals and circulate the air in the cabin automatically.Installation was fairly easy although I did run into a problem on a wall were the fan shroud was just a couple millimetres too short. The wall was 2x6 but had drywall and pine panelling on it which made it slightly thicker than the fan housing would allow. The bottom line here is ... as long as your wall is 2x4 or 2x6 with just one sheet of drywall on each side you'll be Ok, anything thicker and it may not seal properly.The other issue I had was with the cutout and template. They supply a cutout template in the box which works however the bottom lower right hand screw hold were the speed control is located is very close to the end of the cutout you make in the drywall. All the other holes are fine but this lower right hand hole may or may not hold the screw and drywall anchor. I learned after the first one to be very careful when cutting the template and not to cut any extra on the bottom lower right corner.As far as performance is concerned the fan works great and transfers the air from one room to another efficiently and fairly quietly. On the lower fan speeds you hardly notice the fan while at high speeds you do hear the fan motor but it's still quiet enough to sleep while the fan is running.As mentioned I purchased three (3) fans and one of the three did have a louder sounding more than the other too, still relatively quiet but louder than the other two fans.Overall I've very happy with these thru the wall fans. They circulate the air well between rooms in our cabin and help to balance out the follow of heat in the winter and cool air in the summer.I would recommend these fans to anyone and would purchase them again.Note: I also purchased a Tjernlund AireShare transfer fan from Amazon.com (US Site). It's a lot more expensive but is definitely built better and is quieter than the Suncourt model. Both fans work well so if you're on a budget use the Suncourt and if money's no object or you want the quietest transfer fan get the Tjernlund.

Purchased this fan to get warm air from a hallway/main living area into a bedroom on the northeast side of our house. That room has two exterior walls and is always cold in the winter. Our house is heated with hot water baseboards, and this room seems to be on the end of the loop in addition to being on the coldest side of the house.Because framing around the door prohibited me from installing this fan over the door (and there wasn't any other wall available to go directly through), I had to install 8" rigid ducting that went from the hallway, through a cabinet in the adjacent bathroom, and into the bedroom. There's about 36" of ducting total. All connections were made using sheet metal screws and foil backed tape to ensure no warm air leaks into walls - which could lead to condensation and mold/mildew.According to the size/performance chart in the instructions, this fan is for is almost too big for the room (about 100sf). So I use the fan on low and left one small cap and one large cap on, as the directions indicated. I think having additional ducting actually works to my advantage, since the fan's ability to move air is somewhat diminished by having to 'pull' air through that duct. I don't have a traditional install to compare this to, but I will say that the fan is working fantastically for my bedroom. Warm air enters the top of the room and pushes the cold air back into the living area through the gap between the bottom of the door and the floor. The fan is plugged into a Lux Win100 thermostat so it turns on only when the thermostat calls for heat.The fan noise is very low, in my opinion. Just gentle white noise.Dings -- Installation instructions. The instructions make it seem like utmost precision is required when cutting holes, but that's not really the case. I wouldn't advise anyone to be purposefully sloppy, but a little a little slop is ok.- More importantly, I was not impressed by the way the inlet cover is supposed to mate to the flanged sheet metal sleeve. It looked like the flange was supposed to mate with the plastic housing, but the sizes don't match. So you're left just kind of 'making it work'. That's not the end of the world, but some kind of snap fit would work much better. I almost took a star off for that, but it's not a performance issue.All in all, this is a fantastic solution since it works great and it's way cheaper than buying and running a space heater.