I live in southwest Georgia. It is often humid in this area. My house is about 2000 sq.ft. and there is a crawl space under the house. The house was built during the late 70's. We have open vents around the perimeter of the crawl space and we also have a rather old plastic vapor barrier. I do not have a problem with water seeping into the crawl space as a result of flood or rain. I have a moisture problem presently under the house which appears to be due to a slow dripping water pipe. I will have this resolved next week.
My pest control company recommends that I install a new vapor barrier, encapsulate the crawl space, install a wireless humidity sensor and install a dehumidifier. The cost is about $2200, plus an annual $100 fee for maintenance of same.
I really have two (2) questions:
1. Since I believe that the main cause for the increased humidity in the crawl space to be the leaking water pipe, would it be just about as effective if I did everything BUT purchase/install the dehumidifier? I could use the wireless sensor to indicate if I have another problem with moisture under the house had started.
2. I have read that encapsulating/dehumidifying the crawl space can save as much as 20% in your HVAC bill annually. That sounds very high to me ....... does anyone else have experience on what the savings might be?
Much thanks for any help.