Tjernlund UnderAire Crawl Space Ventilator - Deluxe Two-Fan, 220 CFM, Model# V2D
DO NOT BUY THIS PRODUCT !
Please do not buy this product, or at least consult with a foundation professional first. This product will likely ruin your crawl space. What it actually does, is while expelling crawl space air out of one vent, it pulls in the outside warm damp air from other vents into your damp cool crawlspace creating a perfect storm for condensation and water production in the way of moisture, and condensation on all surfaces in your crawl space. After only three days of running this fan in my already fairly dry crawls space was it was almost raining inside my crawls space. Water was dripping from wood rafters, insulation batting, pipes and a/c vent pipes and insulation. There were puddles everywhear and every surface was not damp, but wet. It is better to seal up your vents and put in a quality dehumidifier/condensate pump, which is exactly what I did after consulting a foundation professional, after this product caused more moisture problems.
July 29, 2013
Crawl space fan/vent
Very easy to install and works like the instuctions say. would recomend. if you have a big space might need to buy 2. the parts are good quality
October 16, 2012
This fan is a breeze to install and use. Even the most inexperienced home owner can install this one.
August 13, 2012
Good product-but be aware
Ordered 2 V2D for my 6400 cubic feet crawlspace. Installed easily and fairly quiet where located. Be aware that if outdoors is humid-fans will draw in that air to crawlspace. Had to install dehumidifier for summer months and turn fans off. Will use them in spring and fall. Live near lake/creek and was looking for a replacement to dehumidifier. Not a replacement, but surmised this before purchase. Thought I would give it a try. Have burned out 2 dehumidifiers over the past 8 years, run continously.
July 11, 2012
I have had this ventilator for 3 years. It does the job, that it was designed to do. It exchanges the air in the crawlspace. My crawlspace stays damp most of the year. I put the fan on a timer to run during the daytime, because the outside air is damper after the dew falls at night. It exchanges the air in the crawlspace, when the air is drier during the day. The product seems to be very durable. I have not had any problems with the fan, after 3 years of service. I would buy this product, again.
May 15, 2012
we purchased this fan this spring,it's doing the job.keeps basement humidity down,and also moves alot of air around &out of basement.very pleased with northern tool products & service
June 7, 2011
Does what it is suppose to do
Purchased two crawl space ventilators to cure moisture problem. They did the job. They do run all the time but that is because the humidity is always very high where we live.
March 26, 2011
Works well at little cost
Easy to install, set humidity level and forget about it.. Works great.
August 30, 2010
Seems to help
The fan seems to help - It runs all the time - but I live on a canal and the crawl space is damp all the time. My neighbor installed it for me and it didn't take long.
August 23, 2010
Well Made for Task
I am using this to draw air from the crawl space. I am happy with the construction of the frame and the quality of the fans. The power cord is a handy length.
June 1, 2010