Tjernlund UnderAire Crawl Space Ventilator - Deluxe One-Fan, 110 CFM, Model# V1D
Excellent Product, Great Price!!
I bought two of these ventilators for a customer whose crawl space was extremely damp and wet.
Crawl space was only 20" high, so your movements were limited. These fans are pre notched for installation, so only one hand is needed. Masonry anchors are included and were used. Ventilators have a humidistat and freezestat on them and are wired with a plug. They run quietly, and within three days, crawl space was much drier with no "rain drops"!
Great value for the money and I will use many times again.
September 16, 2014
From what I can see thus far, it should do the job just fine. Actually I have yet to hook this unit up. There have been many other things do get done before I get to this. However, I'll give it high marks unless I find out different.
July 27, 2014
This product was purchased to help control and eliminate a moisture situation in my crawl space. It mounted easily to my floor joists and the low energy consumption is a plus. I felt the instructions were not complete enough for my understanding re the setting of the humidistat. I had to call the company for an explanation on the proper setting of the fan for my situation. The customer service person's explanation was very thorough.
July 16, 2014
Very pleased with this product. It's exactly what I needed to keep my crawl space fresh and dry.
May 23, 2014
The frame allows flexible installation - and makes it easy. Super quiet. Love the humistat - allows me to adjust it with the seasons.
April 23, 2013
Underaire V1D right product for Artisans Group
Our client initially had a moisture problem in their crawlspace. A combination of no vapor barrier, closed vents, and jury-rigged fixes helped mold to grow, damaged insulation, raised heating and cooling costs, and was leading to structural damage. Our architect specified the V1D. As hoped, we it installed it and our electrician got it working in perhaps 2 hours. With a built-in humidistat and thermostat, this was the perfect solution for our client's needs. If their crawlspace had been larger, we could have simply specified the V2D. They're in my toolbox for similar future projects.
February 22, 2010
Single Crawl Space Fan
Real easy to install! I've had itrunning for about one week now; it seems to be working really well. Great product!
November 2, 2009
Cral space ventilator
It was easy to install and it has improved the smell in basement. It is mounted right below my bed and does not bother our sleep.
October 19, 2009
I purchased two of these (1 V2D and 1 V1D) to help move some air in my crawl space. They seem to be built pretty sturdy. Installation was fairly simple too. I can hear the noise from the v2d if the house is DEAD silent but if there's any other noise then you can't hear it. I had to put my ear to the floor to hear the V1D running. It really does move air well. I tested this by placing pieces of paper against other foundation vents and the draft from the fans pulled the paper up against all of them. However, the fans didn't fix my humidity problems under the house. It was old duct work causing the issue. In hindsight, I wish I had a switch in the house somewhere for these. I'd recommend wiring these to a switch that is easily accessible because you don't want these running when its raining or at least I didn't.
October 19, 2009
i installed 2 of these in my crawl space.very easy to install.they work very well but
be prepared as in the summer they run constantly. i wish i had bought the 2 fan model to move more air.i had a problem with one of them,the thermostat went bad and it would not run. tjernlund sent me a replacement thermostat free of charge and it was an easy fix.i would recommend this product.
July 20, 2009