Is there one brand or another that is the "leader of the pack" in whole house dehumidifiers? It appears to me that Ultra-Aire and April-Aire are the two main competitors. I had occassion to speak with a tech at Ultra-Aire and was impressed with their product knowledge.
This may be my next step to solving a major problem created when we replaced our SEER 12 heat pumps with two stage var spd air handler lennox 18 SEER units....Extreme duct sweating in attic and garage ceiling soffits...
Will be closed cell foaming the roof to seal the attic, but in high heat and humidity coastal SC, I want to have plan C ready to go if I need it.
I do have concerns about putting 280 cfm of dehumidified air into the supply plenum when the air handler is off.. causing backflow through the electronic air cleaner. Would be interested to hear alternate install options, including wiring interface. I had considered making the air handler come on when the dehumidifier was on... extra elec cost, but no problems with the air cleaner.
This system also brings in 6" duct of outside air... which I thought was good to put positive pressure on the house.. Anyone know how to set that up? Don't own a Pascal meter, but can measure cfms..