Condensation From Vents Under House In Crawl Space - HVAC - DIY Chatroom Home Improvement Forum

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Old 09-02-2011, 09:07 AM   #1
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Condensation from vents under house in crawl space

Our termite inspection revealed vent condensation under the house in the crawl space. They recommend a de-humidifier be installed under the house, along with sealing the vents. Cost is $3500. Does this solution sound right? Is there a less expensive method to solve the problem?


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Old 09-02-2011, 09:27 AM   #2
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You do not need a dehumidifier, what you need, is to figure out why conditioned air is getting into the space. How many vents are there around the perimeter of the house for the crawlspace. As for the humidity level, what was it, along with temp under the house, compared to outside? Also, is there any material covering the dirt under the house, to help keep the moisture from the ground invading the space?

Crawls are always going to be cooler, because their dew point is lower, than it is outside, same for the temp.


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