I have one I bought for this season. Since I’m in the basement temperature is an issue . It has been a reliable tool so far, hooks up to the controller or you can run it on its own. And it can sit outside the grow tent out of the way as stated in a previous post.

current temp in basement is 64 degrees F. I can keep the 4×4 at 80 with lights on and 70 at night with lights off.

just hoping it’s gonna last a few years.

I love mine great for keeping those lights off temps from any dramatic fluctuations

Mine arrives today, along with my lights and AI controller.