Durablow Stainless Steel Crawl Space Foundation Fan Ventilator + Built-in Dehumidistat (Stainless steel silver, M2)

These fans ran for 2 months then quit. I would have returned them but I bought them 1 year ago but just installed them 2 months ago.

When we were about to sell our house, the buyer insisted on having a Radon test performed. We have never had any testing, nor an inkling that Radon was even present in our location, as no-one around here tests for Radon. When the readings, over a 4-day period, revealed radon in the 3 range, we were amazed, although not alarmed, as under 4 is not even guaranteed by the removal companies. Being proactive, we bought from Amazon, a Hound 3699 Radon detector and placed it in numerous rooms of the house. All rooms tested under 4, but the crawl space readings meandered between 3 & 6. I read the reviews regarding this fan and decided to give it a try, exhausting crawlspace air with all other vents closed, WOW! After only one day, readings in the crawlspace now are consistently under 2. Upon first plugging in, the unit produced a sound just like a drone taking off. I was concerned that the sound would/could be annoying, but once installed, in the crawlspace, under the insulated floor, the fan cannot be heard. If you are within 2-3 feet of the outside vent, the sound produced is akin to a clothes dryer. I am extremely pleased with this purchase!UPDATE: upon moving the radon measuring unit from the crawlspace to the living area, the Radon reading is coming in around .78 *WOW*!! This fan does its job!!One week update: Readings now sub-1, measuring between .20 and .673November 2025 update: The living area of the house now reads under .50pCiL 24/7I let the fan run continuously with a temperature reading of 60/61 with relative humidity averaging 45%I have radiant floor heating (boiler operated) and I detect no additional increase in energy usage and no effect on the tile floors. The crawlspace floor is covered with visqueen and the floor is insulated with fiberglass batting.Winters can be brutal here, so I will update if I run into any issues. So far, is it in the 30's.

Appears to be well made, quiet operation, installed in vent, in garage, went to opposite end of house, can feel it pulling air in, 52 ft, from fans

Fan works excellent. I’ve had it continuously running nonstop all summer long, and it’s still running strong. The noise level isn't bad. You can hear a slight humming but only when you're in the room directly above the vent.

Works well