Have a new 5ton carrier for approx 800sq ft - the space was just finished 2 months ago and we could feel the humidity so I brought in a thermometer/humidity gauge and checked it. Store is in Morrisville NC. System cycles about 3 times an hour, on for 10min, off for 10, on for ten etc. Originally they had a sliding door open to let in fresh air at about 10% but we completely closed it. Every 10 minutes we go from approx 50% humidity to 70+. Temp is 68 so it feels like crap when humidity is above 70%. HVAC tech came out and tapped the fresh air sliding door closed completely, and adjusted the pulley as small as he could for the direct drive motor which runs constantly, but didn't change a thing. I have asked the engineer to provide the heat load calcs because he said it came up with 6.5 tons but he moved it down to 5.0. I think the unit is WAY to big and doesn't have enough time to dehumidify. I'd rather have it run much longer for efficiency and longevity of the system. I don't cook in the place and only have 4 seats. 1 prep cooler, ice cream cooler and stand up refrigerator and all flourescent lights. HVAC guy is saying he talked to the carrier dealer and everyone is having issues because it's been so humid this summer.
Has anyone seen humidity swing this much??????? Where is it coming from??? I have a separate unit for about 400sqft for the back of the house where I have big freezers and frig and that doesn't get as humid. On both sides of me are tenants and I have about 12X10 double paned glass facing approx SW.
Friend said I should just call the insurance and tell them I'm afraid of mold issues and they would force someone, probably the engineer to resize the unit correctly.
Can someone help me out here with some other ideas.