Top positive review
15 people found this helpful
Variable speed vs three-speed fans
By WayneChicago on Reviewed in the United States on January 16, 2023
I wanted a variable speed fan as the uses are much more than a three-speed fan. The ability to adjust the fan speed--and the motor/blade volume--allows one to use this fan in everything from a baby's nursery to a garage. It's wonderful and the need to adjust the volume/speed is greater than you'd think for each individual situation. I have high 22-foot ceilings in my living room, and so much hot air is trapped up there in the winter it's crazy. So, I bought this fan and have it at about 30% of max speed pointed straight up to the ceiling (the fan tilts nicely on the robust metal stand), it's quiet enough to watch TV and not notice anything more than a dull "white noise" if I am listening for it, and the amount of air that now circulated off the hot cavern ceiling above is amazing. I sit on my couch and it's at least 6-7degrees warmer here than with the fan off. That's a lot! Percent of max speed and uses: I also use it as a gentle white noise napping fan in afternoons (15%); for cooling on my rowing and treadmill workouts (80%); for circulating air off my ceiling (30%); for speeding up clothes drying on my rack (50%); for airing out my bathroom when someone sets off a colon bomb I100%...lol...just kidding, more like 50%); for drying wet carpet (100%); for drying moldy basement (66%); for drying a wet dog (40%); for gentle air movement while you sleep (10%), etc. You'll find more uses once you have the fan and appreciate the speed variability. There are YT videos showing the electricity use of this fan, and on low power its drawing about 22 watts, and on high power it's drawing 66 watts (i.e. basically the same as a traditional incandescent 60 watt bulb). I almost never use it on highest power though unless I'm drying rugs or clothes. The noise is loud on full speed. I own many fans, including an 18-inch Patton all-metal, 3-speed industrial fan. Those are effective, but noisy. I adore the ability to adjust the speed infinitely for my needs. It's the best fan I have ever owned.
Top critical review
8 people found this helpful
Vibrates/shakes at certain speeds. Motor noise at other speeds.
By Al Savage on Reviewed in the United States on March 9, 2018
Pros: Airflow is quiet. Air distribution seems wide Infinite variable speed Can be used with an external timer (can be unplugged/replugged and will start up again) Energy efficient Made in USA 10-year warranty Cons: Motor winding resonance noise can be heard at several different speeds. Might be loose bearing/shaft fit or square-wave pulse induced winding noise. Two speeds cause visible fan housing vibration >1/8" One speed causes frame to go into resonance, causing clicking noises I despair of finding a well-built, quality fan. In ye olde days of yore, the fan frame had enough mass to damp lousy balancing, but the lightweight/de-contented fans of today don't have much mass and it does not seem that any mfgr is balancing the rotating mass to prevent these problems. I thought $150 would be enough to put me into the tier of fan that would have sufficient quality that I'd be happy with it, but no. While this fan, placed on a table top (custom built wood table that is extremely heavy and extremely flat and level), does move the air nicely, its infinite speed adjustability is not as useful as it should be, because I have to tune the speed to eliminate noise and vibration. I'm going to keep it, because it works well with an external timer that has large buttons for people with limited dexterity. [This is the reason I'm not using, say, a Dyson AM06: timer function via IR remote only with tiny membrane switch buttons that cannot be operated unless you have fine motor control. Membrane switches are one of the least-reliable things manufactured, and not durable at all unless you push with a finger and exactly at right-angle to the switch plane: junk. And, I can't use an external timer because: electronic controls will not start at the same status when depowered/repowered. Turn it on, unplug, replug: fan remains off.] But I'm not going to pretend that I'm happy with the 723DC. I would pay twice as much for a similar fan with infinite speed control that was similarly quiet and had no membrane or tactile switches, that could be unplugged while running and restart when replugged. Alas, true quality has deserted us.
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