I live in the Pacific Northwest (Seattle area) and the allergy season has started for me. It is so bad that I am thinking about getting an air exchanger for next year. The house I live in was built in 2007. It has a standard gas furnace and the furnace has a large 20 x 25 x 4 filter attached to it (I change the filter twice a year).
What is the difference between the filter attached on my furnace and an air exchanger? Are they doing the same thing? Would I get much better air in the house with an air exchanger? Is it worth getting an air exchanger?