Good suggestion. When the outside air has a dew point below 32^F, outside air is a more cost effective way of reducing indoor %RH. Spaces with high indoor dew points during cold windy weather usually are not get enough fresh air.
Originally Posted by tompa
On the other hand, as the outdoor dew points rise above 50^F, supplemental dehumidification is very effective at maintaining low indoor %RH.
A properly install whole house ventilating dehumidifier with outside fresh can provide >40%RH throughout the year. Special sizing may be needed. Who was the dehu manufacturer that commented on the limitation?
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"