Other than the past few years whole-house air purifiers have become more plus more popular. Through math plus research, people are learning how dirty the air in their home truly is plus how much it affects their long term health! An whole-house air purifier is odd from an air filter in that it not only filters things from the air, however it also sanitizes the air, but my partner is truly concerned about the air pollution so to surprise his I got the whole-house air purifier for his anniversary. The whole-house air purifier works by pulling the air in plus first sending it through a normal air filter which takes out immense air particles, then it continues on to another more thorough air filter which takes care of pet plus human dandruff plus air. Then it goes through the HEPA filter as the final filter. This filter is the most important as it cleanses the air of the smallest particles plus is said to clean over 90% of the pollutants in the air. My partner was so happy when he saw his gift! My great friend and I set it up in our bedroom plus let it run for a few days. My great friend and I noticed a significant difference in the air quality of our bedroom plus enjoyed our family time in clean air. My partner plus I decided to order three more whole-house air purifiers for every room in the first floor of our house, plus over time my buddy and I would invest in one for every room in the second floor of our house. My great friend and I have no regrets in buying our whole-house air purifiers.