Hvac Dripping Water In Crawl Space

Is your hvac system sucking in nasty crawl space air.

Hvac dripping water in crawl space. When the unit is on there is a steady immediate trickle coming from the pvc pipe. And there is also a stead trickily coming from the bottom of the plenum in the crawl space about 5 minutes after the unit is on. Humidity drops on its own whenever temperatures decrease and it gets cold outside. He doesn t see standing water in the crawl space but it is a little humid.

Condensation forms when warm humid air comes into contact with a colder surface like your air conditioner s ductwork. Duct lines dripping in crawl space. There is no sign of frost. Water leaking below the evaporator into the crawlspace during a home inspection in north dallas.

Another reason we see crawl spaces explode with high humidity is if you take two identical homes and one home is kept on 74 degrees and the other is on 68 degrees the home that is kept colder will condensate more in the crawl space if the hvac ducts run through the crawl space. The colder the air the more likely it is that water will condense. The inspector notices the hvac air ducts are wet and dripping water onto the moisture barrier. There is adequate ventilation so why is there high humidity.

Condensation forms when the water vapor in the air drops out of suspension and condenses into a liquid form. This also caused no water to drip into the plenum and onto the crawl floor. You could also use batt insulation but don t. But during our warmer months here in cleveland tn and chattanooga tn duct lines will be dripping so much inside crawl spaces that some of our repair projects will literally be raining underneath.

Adding a fan in the crawl space will help reduce moisture and adding a vapor barrier such as plastic sheeting to the floor of the crawl space will help prevent moisture from the ground from rising up to affect the underside of the wood floors. To insulate the crawl space i would use a closed cell two pound 907 gram spray foam because it will act as both your vapour barrier and insulation. This is a shock to many homeowners. On several occasions we have performed inspections where the only real problem was that the hvac system was sucking in unfiltered air.

The home inspector sees moisture in the crawl space. The house cools fine.