Free tool
Humidity Comfort Calculator
In Florida, humidity — not just temperature — determines comfort. This tool estimates your indoor heat index and whether dropping humidity would let you raise the thermostat without feeling any warmer.
How to measure: most smart thermostats show indoor RH. Or grab a $12 hygrometer from any hardware store.
"Feels like" now
77.0°F
With 50% RH (dehumidified)
76.5°F
Small change — 0.5°F cooler feel
Your indoor humidity is already reasonable. Focus elsewhere.
Target: 45–55% RH year-round in Florida.
Why humidity matters more than temperature
The National Weather Service heat index formula shows that at 78°F, moving from 65% RH to 45% RH drops the "feels like" temperature by about 5°F. That means with a whole-home dehumidifier, you can often set the thermostat 2–3° warmer and feel more comfortable — while cutting energy use.
What a whole-home dehumidifier costs
Installed typically $2,400–$3,900 in Volusia County. Runs quietly in the attic. Ties into your existing ductwork.
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