View Single Post
Old 09-18-12, 02:45 AM   #5
Super Moderator
Piwoslaw's Avatar
Join Date: May 2009
Location: Warsaw, Poland
Posts: 943
Thanks: 187
Thanked 109 Times in 85 Posts

Originally Posted by ecomodmonster View Post
Do you think its better to block up all air vents and use a dehumidifier to fight mold?

why do ecobuilders use large heat exchangers when they could just use a dehumidifier?
Because you exhale more than just water vapor. Building codes require a minimal rate of replenishing the house's air, for example 50% of the house's volume per hour per person. Water vapor is the least of your worries, what you want to get rid of is CO2, carbon monoxide, vapors from chemicals, plastics, etc.

A dehumidifier will help if you live in a particularly humid area, or if your house has an old ventilation system which can't keep up with your water production (many occupants, lots of cooking). A heat exchanger can also help dehumidify the incoming air.
Ecorenovation - the bottomless piggy bank that tries to tame the energy hog.
Piwoslaw is offline   Reply With Quote