Humidity! What’s the big deal?
When cold, dry air enters your home and is warmed to room temperature, using your furnace or air handler, the relative humidity in the average house can drop to as little as 5% .
The E.P.A. recommends a 50% relative humidity level in your home year round. During summer we use air conditioning to remove moisture and therefore cool the air inside our home, but when it is winter time, we are heating the air and removing the moisture from it. Compare recommended 30% – 60% relative humidity to the average 25% relative humidity of the Sahara Desert and you can understand why too much or too little humidity can effect both your health and comfort.