So I'm new to the biz and I'm experimenting on my own home. I have 2300-2500 CFM infiltration rates on a 1400 sq foot home and duct blaster couldn't even reach 25 Pa w/ 2 return registers on a split HVAC system. I NEVER run my unit during spring and fall causing high RH during those times. I just got a Lowe's bought 70 pint units which only does a room at a time and struggles to maintain below 55% without running all the time (is ES and i JUST bought it). what are my options? i plan on sealing duct work this weekend but mind you, ducts are undersized (per a local reputable HVAC guy) and I plan on air sealing. So once I tighten a little, what stepr do you all recommend to control the RH?