AC InfinityAIRTITAN S7, Ventilation Fan 12" with Speed Controller, IP-55 Rated for Crawl Space, Basement, Garage, Attic, Shed, Hydroponics, Grow Tents

This was easier to install than I thought. I went into the crawlspace, screwed it in behind one of my crawlspace vents, and plugged it in.The default speed is 10 so you don't need to connect and use the controller unless you want to reduce the speed.It is super quiet, I can't hear it from the house unless I open up the crawlspace hatch.I had to cut the faceplate a bit with a metal saw so that it fit in the space where my vent was, but that was pretty easy.Within about a day, my radon levels dropped by ~50% and never came back up. Airflow really helps dilute the gases under the house.Saved me thousands $ and tons of stress. 5 stars.

I recently had my crawlspace encapsulated and was left with a bit of a plastic chemical smell wafting up into the house which prompted me to purchase this fan to add some ventilation to my crawlspace. I added this fan to vent air out of the encapsulated crawlspace to create a negative air pressure in the crawl so air would never rise up into the house. This worked great and the fan has been running ever since! I can tell that the fan is designed for long term continuous use.

It's just two cheap plastic fans on the inside and if you need too remount it you cannot because the fans break super easy as you screw them back in

I bought a house with a sealed crawl space, and radon test showed level in the 4-6 range inside the house. Radon mitigation companies quoted me a minimum of $2500, and they are next to impossible to get an actual response or schedule anything with anyway. So I decided to take matters into my own hands. I researched online that in a sealed crawl space, the EPA actually recommends leaving at least one foundation vent open to allow soil gases to escape. I installed this fan in one of my crawlspace vents and set it to run at ~50% power. Within 24 hrs, radon levels were below 2. Within 48 hrs, radon levels were below 0.6. Running at 50% power, this fan is quieter than a whisper. I really like the ability to adjust the fan speed. Two things I don't like: 1) Speed adjustment control is a little digital device that plugs into the power supply via USB-C cable. It would be better if the speed control was a mechanical knob directly on the device; and 2) the power supply cable comes out of the bottom of the fan, which interferes with installation. it would be better if it came out of the back.

Quiet and power efficient

It helps to move the air in crawlspace and reduce humidity!

Doesn't seem to move as much air as advertised (i have no way to measure it), but it functions. The controller is awkward and almost unuseable with the connected USB C cord needing to be plugged into the unit. The pictures give the impression that it is a "remote" but it needs to be plugged in to work and the cable is very stiff and hard to deal with.Mediocre and overpriced, and could be much better with a few tweaks. Maybe the 2.0 unit will be better?AC Infinity seem to be the only game in town for these things so that is how this will go unless competition steps into the market.

Installed it to remove carbon monoxide from my garage since I park my cars inside. A must have if you have classic cars that do not have catalytic converters, as the exhaust gases can be fatal and cause cancer overtime.