Are you aware that there’s a filter media water pad in your whole house humidifier that should be inspected if not replaced annually? These humidifier water panels will get lime, mold, bacteria and fungus build up on them that is not only unhealthy but will also cause fowl orders through out your home. Replacing this filter is a fairly simple process that will improve the air quality in your home.
Most name brand humidifiers will have a removable cover that will allow access to the humidifier water panel. Simply remove and discard the old pad. Before installing the new replacement pad take some time to clean the inside of the humidifier with some type of cleaner such as CLR or equivalent cleaner. Check the drain pan and hose for any blockage, you may want to pour some house hold bleach through it to kill any bacteria growing with in.
Install the new replacement pad, some may have a indicator such as a paint spot on them to indicate the top. Next turn your thermostat up so your heat cycles on and increase your humidistat set point so it is calling for humidity. After a few minutes you should see a small amount of over flow water running out the humidifier drain. If this is not happening you may want to check the humidifier water orifice located near the solenoid valve for restriction. A restricted water orifice is one the most common reasons why humidifiers so not function. This problem is directly related to the water quality in your home.
Some humidifiers have fans within and many others called a bypass type use the heating system fan to blow air across the evaporator pad. If you have a bypass type and have air conditioning you will want to make sure the bypass damper is in the open position. It is very important when the air conditioning season comes around that the bypass damper is put back in the closed position.
If after checking these things your system still does not seem to maintain the humidity level your looking for such as about 30% you may need to contact your local hvac contractor to trouble shoot it for you.I hope these tips help improve the air quality in your home and save you from having to call someone for humidifier maintenance.