what do I do to get rid of the high humidity & condensation in my home?

Asked by Brandi
Bountiful, UT

I live in Utah. You would think I would need a humidifier in my home but that's not the case. I have lots of condensation on my windows & walls & the average humidity is around 60% or higher. I get mold growth on my window frames & base boards. My windows were replaced right before I bought my home, but I'm wondering if they aren't high quality. A couple of them have already cracked. The window company told me it was from the load on my roof. I really don't believe their answer. I only have one exhaust fan which is in my downstairs bathroom. Anyway, what is your suggestion? Should I get a whole house dehumidifier, more exhaust fans,or new windows?


Sean Lintow Sr

Answered by Sean Lintow Sr

Naperville, IL

SLS Construction & Building Solutions

December 5, 2013

First off, as for the windows - I cant answer that without seeing the place, but with high humidity like that, you could have some issues in the wall allowing for a load to be applied to them. Your best bet is get someone in to check that out. As for high humidity - I know in southern Utah the issue would basically be internal gains, while up in your area I am not sure if it is a mix of internal gains & external. For external gains you might need a dehumidifier but I would focus more on the internal first. All bathrooms need to be vented to the outside along with the kitchen (not a recirculating microwave but actually vented outside). Anytime you are taking a shower, the vent should be running & it should be left running at least 15 minutes after use. The same goes with cooking. How many plants do you have inside - some can be healthy while an overabundance can cause moisture issues. Do you have a ventless heater in your place - if so that needs to go as its primary product is moisture. Beyond this, assuming your house is sound you should get an energy audit done & look at air-sealing, improving insulation levels, and adding in an ERV/HRV (no they should not be used to vent those rooms listed above) For more: &

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