The Activent replaces existing vent/register covers in your home, converting them into active components in a zoned heating and cooling system. A wireless thermostat, which can be placed anywhere within the room, signals the vent to close when the desired temperature is reached or open to allow additional heating or cooling.
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This product really works as advertised. I have a very old house with single zone forced air heating and air conditioning. My upstairs back bedroom is far away from the furnace and thermostat. Setting the main house thermostat to 65 degrees results in a temperature swing upstairs between 63 and 75 without the register control. Manually balancing the air flow by closing the old register didn't work very well- the air flow would change depending on which doors in the house were open and closed at the time, and once the sun hit the roof or it got cold outside the temperature would shoot way up. This unit solved that problem.
It installs in the vent opening with a couple of screws. It is easy to set up- just add batteries, set the code for the wireless remote, and go. It has motorized louvers that open and close depending on the thermostat set point in the room, and can be set for heat or AC, or manually overridden to be open all the way or closed all the way. Multiple vents can be linked to a single thermostat for rooms that have multiple registers. The actuation of the louver motor is very quiet and unobtrusive.
There are 3 reasons I didn't give this product 5 stars: 1.) The vent cover does not offer an aim-able diffuser. You could get around this by not using the included cover and screwing another register cover over the top of the air valve unit. 2.) The louver "valve" unit for the 12/14" register is fairly short and restricts more air flow than the old register did in the 12" space. It seems like they use the same air control unit for the 4x10 as for the 4x12 and just add a bracket to make it fit. 3.Read more ›
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Good idea but poorly designed. Heat made the plastic expand and would no longer function. I had to cut and file so the fins would move freely. It stopped working altogether after the first winter. Total garbage. It's a shame cause it's a great idea. I ended up installing an inline damper to a thermostat.