Here in the Valley of the Sun we have notoriously dry weather and low humidity. A complaint I run into now and again is usually offhand but very telling.
"We have so much static in our house, we are always shocking each other." Of course the kids love it but here is what may be going on and how to correct it.
Your Air Conditioning system is designed to move heat. That's it. During the summer it moves the heat from indoors to the outside via the refrigerant and then blows it into the air by way of the condenser fan. Water carries a lot of heat. When the humid air blows past your evaporator coil that is in the 40 degree range guess what? The water condenses and flows (hopefully) outside.
Now the idea is for that de-humidified, cool air to travel back to the conditioned space and you to go about life. Here is where the 'static' starts. If your blower motor (in the air handler or on the rooftop on a packaged unit) is set to too low a speed the air from the return stays in contact with the coil longer. How much longer? Who knows, but it is just long enough to remove too much humidity and make your living space dry as a bone.
What can we do? Simply speed up the blower motor. Usually the fan motor has multiple speeds and the fan can be sped up to the next faster to stop all of your static problems, that is, unless your kids need something to do indoors in the summer!
For help on changing your blower speeds yourself or any A/C or Heat Pump related questions you can write me here or at http://www.thermal-medics.com/.
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