Carpets in your home act as a filter, trapping allergens and dust from the air that we breathe indoors. Dust and other allergens that fall into carpet stay in the carpet. These contaminants are removed through vacuuming and hot water extraction cleaning. With hardwood or tile, this filter is not present in the room and air quality goes down.
Hot water extraction is important to carpet maintenance because it flushes out these contaminates. Think of changing the oil filter in your car of the filter on your air conditioner. This is one reason hot water extraction is known as a restorative cleaning.