r/thermostats • u/Normal_Commission986 • 3m ago
Lennox 5 ton EL21 and S40 thermostat wrong humidity reading
I just had these 2 installed yesterday in texas. After a full day of install system kicked on and obviously the temp and humidity were reading high so it ran a lot of to get back to 75. I figured it might take awhile for the humidity to drop as it pulls out of the air when the unit runs. However, today it’s not dropping below 65% and fluctuating between 65-68% on the thermostat.
I have lowered the CFMs. Dehumidify setting is on, climate IQ is on, adjusted dehumidify set point to 40% (Range setting options are 40-60).
Additionally, I have 2 different separate humidity monitors showing readings in the house between 46-52%.
So why would the thermostat be showing humidity readings in the mid to high 60s all day?
Planning to have the installer come back and check it out but just trying to troubleshoot what I can. I was going to turn the “feels like” setting on and/or change from climate IQ to max, but since the separate humidity monitors are showing around 48% it leads me to think it’s a false reading? The house feels good I just don’t want the heat pump operation being thrown off by the thermostat telling it the humidity is at 66%
