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AC Infinity AIRTAP T4, Quiet Register Booster Fan with Thermostat Control. Heating Cooling AC Vent. Fits 4” x 12” Register Holes.

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A quiet fan system designed to be mounted onto wall or floor registers to boost airflow. By increasing warm and cool air coming from weak registers, you can increase room comfort and reduce energy costs. Features a LCD display with smart thermostat control and customizable fan speeds. The mounting frame is constructed of bronze-anodized aluminum with CNC-machined detailing and a brushed finish for a professional appearance. Features PWM-controlled stator blade fans that are designed for high static pressure applications such as ducting. Includes hardware and power supply needed to secure the unit onto an existing register opening and power it through an outlet. The controller on each unit features active thermal monitoring that can trigger fans to run for both cooling and heating temperatures you have set, as well as automatically adjust fan speeds to respond to varying temperatures. The controller can also be set to run continuously at speeds manually. Features temperature display, easy power on-off, and backup memory. The system utilizes high-performance DC-motors that are controlled using PWM (Pulse Width Modulation). This technology enables the dual 92mm fans to be able to run smoothly at extremely low RPM speeds without generating motor or electromagnetic noises. In addition, the fans feature a stator-blade design with a high static pressure rating, specialized for delivering airflow even in applications where air movement is being restricted such as through ductwork. The motor houses dual ball bearings that are rated at 67,000 hours and allow the fan system to be mounted horizontally or vertically, which are certified by CE and RoHS.

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[This review was collected as part of a promotion.] Give a short description for this: I divided a room with 1 HVAC outlet/vent. The return is on the other side of the wall. a hole drilled into both sides of the wall at the top fixed that with THIS device. I guess competitors do something similar, but this product has proven itself to be quiet enough for my children and keeps both sides of the wall similar temperatures. I HIGHLY RECOMMEND!

Perfect Fix for Split Rooms with One Vent

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[This review was collected as part of a promotion.] Worked perfectly to pull the heat out and warm our living room!

[This review was collected as part of a promotion.] Downloading the app was simple.
I liked that i could control the settings directly from my phone.

user friendly

I had a favorite part of my living room that was underserved by the air ducts. I considered major ductwork changes but thought I'd try this first and it made a major positive difference with only a couple minutes of work. Sound level is pretty good even at top level 10. For my A/C I set the turn on setting at 64 degrees. When the AC starts and the cool air comes to the vent down to 64 this booster fan comes on. After the air turns off the fan continues to suck the cool air from the vent until it reaches 64 and it turns off.
It also helps  me monitor the ac. It has a thermo. that monitors the duct ac. In my case at 51 degree cool air at peak. Anything well above that means something is amiss (dirty filter, charge or whatever).
Only problem I've had is my dog routinely steps on the control button and changes my settings, but that's no biggie.

Big Improvement

I was s little nervous to buy this, but glad I did. I can tell a huge difference.

Great buy!

[This review was collected as part of a promotion.] The instructions were difficult to understand, and could program it,  but works well because it is on all the time. Very quiet

Nice and quiet

I I like the fact it does help in cooling my room upstairs. I don't like having to close the door in order for me to really feel the coolness.

Good product