I live in S FL and I recently got 2 new AC units put in. I have a 3 ton TRANE XL16i 18 SEER split system and a 5 ton 16 SEER Trane split system. My house is about 4,200 under air with 14 foot ceilings. I have all impact glass windows. I am having real humidity problems. I can't get the humidity under 55% and I am worried about mold and long term damage to the wood floors. I did as much research as a noob can do and found out my units did not have the humidity option set up to work on the thermostat. I set this up myself and it has helped a tiny bit (these units seem to only allow the AC to drop an additionaly 3 degrees to get the humidity to the desired range). I keep my house at a max of 75 most of the year, so it is not real hot inside ever. However, I am still at 56-65% humidity on certain days.
The guy that put the units in wants me to install a whole home humidifier to lower the humidity. However, given the thermostat wasn't even set up correctly in the first place I am wondering if this guy is just trying to sell me more equipment. My main questions are:
- Is the humidity in S FL too high for my AC units to handle in the first place? Should I even need a whole home dehumidifier?
- Should I be looking at having someone switch my dipsticks around to have the units be more efficient at dehumidification? I have read a lot about blower speed relative to humidity but honestly I still dont' understand what is best.
Any thoughts or comments would be very appreciated.