Allergies can cause itchy and watery eyes, a runny nose, inflamed sinuses and a sore throat. Air conditioners with special filters to trap allergens, such as HEPA air filters, can help remove pollen and other allergens from the air. In addition, they can also capture particles such as dust mites, mold spores and smoke. A properly functioning air conditioner will generally maintain a healthy humidity level between 20 to 50%, which can help reduce mold growth in a room.

Some air conditioner models today also even have the ability to monitor, detect, and collect airborne dirt, even if unit is not in operation. Other types of portable air conditioners provide ionizers and UV lights that kill bacteria on contact. They can also improve air circulation in poorly ventilated rooms.

Older people often need to live in a temperature-controlled environment, particularly if they live in the Southern United States or other areas where it gets very hot during the summer months. The elderly are more prone to heat-related stress. A portable air conditioner with cooling, heating, and filtering mechanisms can reduce airborne pollutants and maintain a steady, comfortable temperature - no matter the weather outside.

Portable room air conditioners range in sizes from 3,000 BTUs up to 14,000 BTUs. The greater the number of BTUs, the more powerful the unit and the greater the capacity to cool a large area. Check with your doctor before purchasing any expensive equipment.

To keep the health effectiveness of any air conditioner, it should be maintained according to the manufacturer's instructions. Used properly, portable air conditioners can dramatically help improve indoor air quality and help you feel your best.