These types of buildings need fresh make-up air ventilation because they air tight will not have much infiltration. I figure on an air change in 4-5 hours. Also consider the number of occupants regarding latent load. Because of lack of windows, the solar gain is low. With adequate fresh air latent load and occupants, include a small whole building dehumidifier for days of low sensible cooling loads and high latent load. Check out the Ultra-Aire ventilating dehumidifiers that are sponsors of this site.
Originally Posted by cajunheat
Without fresh air ventilation to purge indoor pollutants and renew oxygen, indoor air quality will be poor. With low sensible cooling loads and high latent cooling loads, supplemental dehumidification is needed to maintain <50%RH.
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"