Most heating and cooling systems still use a basic air filter. There are several types of permanent air filters available in various efficiencies for your home.
The proper level of humidity in your home will make you to feel more comfortable by being able to breathe easier and reducing the dry eye, nose and throat feeling that you have when waking up in the morning.
A flow-through humidifier provides humidity without breeding or spreading mold or mildew. There is no water reservoir where water can stagnate. A flow-through humidifier is easy to maintain, has no moving parts and is designed to operate with no mineral or mold buildup.
Residential ultraviolet (UV) lights have been independently tested and proved to be effective in the constantly moving air environments of heating and cooling systems, killing mold and bacteria quickly and effectively.