Why is my new or remodeled Delray home cold but humid?
It's almost always sizing. New and remodeled homes are tighter, better insulated and use better windows than the homes they replaced, so they need less cooling capacity than you'd guess from the square footage. When a contractor installs a "bigger is better" system, it hits the thermostat setting in minutes and shuts off. The coil never runs long enough to pull moisture out of the air, so the house reads 74° but feels sticky, and mold can follow in closets and corners. The fix depends on the home: correct sizing on the next replacement, a two-stage or variable-speed system that runs longer at low speed, or adjusting airflow so the coil gets cold enough to dehumidify.
How do you cool an addition or sunroom that's always hot?
Most hot rooms are additions that were connected to the existing duct system as an afterthought. The main system wasn't sized for the extra space, the duct run is long, and sunrooms gain heat through large windows faster than one supply vent can remove it. Turning the whole house colder to fix one room wastes energy and makes the rest of the home uncomfortable. Better options include rebalancing the ducts, adding a proper return so air can circulate, or installing a ductless mini-split dedicated to that room. A mini-split runs on its own thermostat, so the space gets the cooling it needs without overworking the main system.
