I bought and installed my dehumidifier in November of 2017, but I waited a year to write a review because I wanted to have some experience with the unit before issuing an opinion. After one full year of use I must say that I am very pleased. My crawl space was exceptionally damp when I bought this house. I dug a drainage ditch and installed a sump pump, installed new vapor barrier plastic, and then installed the dehumidifier. I still have moisture under the vapor barrier clearly visible, but everything is nice and dry above. I now have no signs of mold on any of the floor joists such as I had before. I would highly recommend this product.

Well built heavy duty dehumidifier that is perfect for the crawl space of your house. Love the five year warranty and the fact it was Made in USA. Ventilation feature is a nice plus of this unit. Running perfectly and doing the job of lowering humidity under the house. Highly recommend this unit Thanks.

Very satisfied. Product came in a timely manner, packed well, easily set up and performs as expected. It is being used in a encapsulated crawlspace. Dropped the level of humidity to 59% very quickly. The only thing that out performs the humidifier is the price. Great value!

Installed easily in a damp crawl space. Reduced humidity by 10 points in 24 hours. Quiet, efficient. Works as advertised.

I had called before purchasing and new that this is the Aprilaire 1820. The instruction were easy to understand and the unit is much quieter than expected. I have not had the unit long enough to properly review it as I don't think that 4 days of operation qualifies for durability or quality. I know that at start up, my crawl space was at 84% RH and on the 3rd day it had come down to 67% RH. For the price and the warranty, I can't say anything bad about this unit. GREAT VALUE!