Indoor Climate
Humidity, dew point, thermostat settings and comfort: the numbers behind a home that feels right.
Calculators
Dew Point Calculator: Dew Point, Wet Bulb and Relative HumidityDew point is the temperature at which air becomes saturated and moisture starts to condense. At 75 °F and 50% relative h…How Long Should It Take to Cool a House? Time Estimate CalculatorA correctly sized central AC typically lowers indoor temperature by about 1 °F every 15 to 30 minutes, so a 5 °F drop ta…
Guides
Basement Dehumidifier Settings: What Humidity to Set and WhySet a basement dehumidifier to about 45 to 50% relative humidity. That keeps surfaces safely below the roughly 60% level…Does AC Remove Humidity? How Air Conditioners DehumidifyYes. An air conditioner removes moisture because its indoor coil runs colder than the air's dew point, so water condense…Heat Pump Temperature Range: How Cold Can a Heat Pump Work?A standard air-source heat pump heats efficiently down to roughly 25 to 30 °F and usually keeps running into the single …How Long Do AC Units Last? Lifespan by Type and When to ReplaceA central air conditioner typically lasts about 12 to 17 years, a heat pump 10 to 15 years, and a window unit 8 to 10 ye…Ideal AC Temperature: Best Thermostat Settings for SummerThe US Department of Energy suggests 78 °F when you are home and awake in summer, with a higher setting when you are awa…Ideal Indoor Humidity Levels: Summer, Winter and Window CondensationKeep indoor relative humidity between about 30 and 50%. In summer, aim for 40 to 50% and stay below 60% to avoid mold. I…