Many years ago I worked for a company in Little Rock that specialized in energy efficiency; building management systems, energy recovery, solar, the whole ball of wax.
We did many super efficient homes. The heat pumps were sized at one ton per 1000 sq.ft. and they worked very well. They had small self-contained dehumidifiers residing in oversized return plenums. It seemed to me this was overkill until I got a trouble call one day about high humidity. Heat pump operation was spot on. Finally figured out the dehumidifier had quit working. Replaced the dehumidifier and problem solved.
Thanks again everyone.
What do you seal with, mastic, silicone, foil tape?
Is it possible to add a dehumidifier to the existing system so that the dehumidified air would be forced up stairs as apposed to a stand alone system that would mostly just dehumidify the basement?
There are all kinds of different dehumidifiers. The little dehus that are inexpensive, not very efficient, and are shot in a couple years are ok. Consider the new ductable, higher capacity, durable, plus they are able to maintain <50%RH throughout the structure even during cooler temperatures. They cost more than the resid. units but worth it. They are also able to provide a small amount of fresh air when the home is occupied and stale.
Ultra-Aire, Santa Fe, Honeywell and others are available at your whosalers or on the web.
A fresh air change per 5-6 hours purges indoor air pollutants and renews oxygen with <50%RH throughout even when there are low/no cooling loads is desired. When the home is not occupied, the dehu keeps the home dry with the a/c off for much less energy.
Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
Use +Merv 10 air filter. -Don't forget the "Golden Rule"
Originally Posted by Randy Myers
If common sense is so common how come so few of us have it!