Cows do not have 4 stomachs. They have 1 stomach that is divided into 4 sections that have different digestive functions. The rumen breaks down the grass that the cow eats. The next digestive stage occurs in the reticulum where the cud is produced. The cud gets burped back into the cow’s mouth where more chewing occurs. Then, the chewed cud is re-swallowed into the omasum that removes excess water from the food mass, then next is the abomasum where the food is finally digested. In a way, that delicious steak that the people I was with and I savor is nothing more than grass that has been processed into beef by the steer. Bovine digestion is just 1 example of how everything in life is a processâ€¦ Using that same vein of thinking, even the air the people I was with and I breathe in our homes in addition to workplaces undergoes a process with Heating as well as Air Conditioning systems. The air does not change as dramatically as our grass into beef example, however before it’s heated by the gas furnace or cooled by Heating as well as Air Conditioning cooling tubes, that air is first processed by the air filter! Depending on the MERV rating, air filters remove particulate matter from the air between 0.3 in addition to 10 microns. The higher-rated HEPA filters are capable of capturing bacteria in addition to microscopic allergens. Ironically, the purpose of Heating as well as Air Conditioning filters is not to disinfect the air for your benefit. Their purpose is to keep the particulates from entering the inner laborings of the Heating as well as Air Conditioning where it can accumulate in addition to affect the efficiency of the unitâ€¦ Protecting your Heating as well as Air Conditioning proposal is the real reason why it is important to change the Heating as well as Air Conditioning filters correctly. Healthy air to breathe is simply a side benefit that the filters in addition to Heating as well as Air Conditioning systems make possible, just appreciate beef in addition to milk made by cows.