How Well are Your Fans Evacuating Moisture and Odors from your Home?

Do you have any idea how many fans your home has to evacuate moisture? Bathroom fans.. Kitchen Fans help get rid of food odors, smoke- we all make mistakes in the kitchen, and laundry rooms to exhaust moisture out of clothes dryers.

Be aware and wary of these fans too  [stextbox id=”info” caption=”Be aware and wary of these types of ans too” bwidth=”2″]There are other fans around your home, and they only fit here talking about moisture when these types of fans can help create a negative pressure in the house which might make your fans pull air poorly. If you have any combustion appliances in the home, or don’t know what I am taking about- you probably need to check out  the info on combustion and negative pressure in the home. Combustion byproducts that do not go up the chimney can make you sick, or even worse. Powerful fans in the kitchen in particular, or in cooperation with other fans in the house- shop vacs or centralized vacuum systems can create negative pressure in the home. This creates a pressure gradient working against the exhaust fans and less air is forced out. The critical issue is combustion appliances which rely on postivie pressure inside the house, and the venturi effect of the chimney to create a negative pressure up the chimney to evacuate combustion byproduct gases. [/stextbox]

Bathroom fans require a duct to the outdoors. This would seem like common sense, but often these types of vents go into the attic, and often are attached to a house that just wanders off. It might be blocked by something. It might be smashed by something. It could be disconnected from the outlet. Fan technology is lightweight material, sort of like an afterthought in home construction BUT they play an important role in getting rid of the moisture in your home.

Otherwise this moisture can be caught in a particular part of the house, find a cold spot and condense and grow mold or mildew. Has anybody ever seen a bathroom with mold or mildew? Well, mold and mildew is never healthy and, I figure it is like icebergs- the biggest part of the problem is out of sight where the least drying can take place- where the mold or mildew lies undisturbed and flourishing…

Many homes in North Texas hav kitchen hoods that dump moisture right into the attic. This is not good, Moist warm air in the winter can condense on cold surfaces in a cold attic during the heating season, and the right combination of temps can create mold spores in the attic. In the cooling season with cold air leaking out of the lower portions of the home and hot air settling into the home at the ceiling level can have these mold spores wafting around in the conditioned air. You might want to see some artful diagrams for air leakage patterns and pressure gradients in the cooling and heating season. These diagrams can tell you where your cool air is wandering off in the cooling season, and  where your warm air is wafting away- in the heating season.

All fans- kitchen fans, clothes dryer fans, bathroom fans, must have robust exits for moisture out the house as a fundamental step towards creating a healthy home.

Active and efficient fan assemblies are important to energy efficiency and to moisture control in the house. We check out the fan ducts when we venture into the attic to see what is happening up there in to spot air leaks, to inspect the HVAC ducts and check on insulation.

Checking on Fans is part of an energy audit to see how you might save money on energy. We address energy audits here. -LINK-

It is critical that you understand the moisture handling fan systems in Your home that are not related to your HVAC system. You probably have an HVAC service company or if you have an issue with your HVAC system you can find like 5000 companies in North Texas who are ready to help you.  And you will get bombarded by ads and offers about your central air system. But no one is coming around asking about the forgotten little fans in the bathrooms, or asking you if your clothes dryer vent is working properly, or if your range hood is keeping moisture out of your attic. This one in on your plate.

Review above for options. Like visiting the attic. LIke inventorying vents of the side of the house in relation to the bathrooms in the house, or asking your home inspector… or checking your home inspection report.

Let me suggest you call a home energy audit specialist. There are many other good reaons to talk to one. Here are several -LINK-

Any thoughts, complaints, comments or question. Add them below.



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