Review on 🏠 Aprilaire - 413 A2 413 Replacement Air Filter: Whole Home Allergy Filter, MERV 13 (Pack of 2) by Isaac Samal

If you have a high volume HVAC system (ie something significantly better than most things that you can find at Ace Hardware or Walmart and don't need to be replaced as often, any filter in this line is worth trying, especially if you have a brand new system and/or a freshly cleaned air duct (and want to keep it that way) or just moved house If you are moving to a new location and notice a lot of dust and dirt in the ducts under or behind the grilles this is a good start and will put a little more strain on your fan and motor, particularly fixed speed models, so make sure your filter is clean is designed for this type of filter, otherwise after a while you might get a maintenance headache.You will find that less material is collected.I apply a fist reg el an: When the entire surface is covered with gray dust a few millimeters thick, I change it. It will almost look like a "blanket" over the filter media. Ultimately, you should be able to replace it every 4-6 months depending on the air quality in your area and the amount of paint dust in your home. If you have really good air quality and don't use the HVAC 12 months out of the year, you can even stretch it to 6-8 months. While they are designed to do that, I wouldn't leave the filter on for 12 months unless the design is very clean / very low dust and movement of people and pets. They are definitely not meant to be replaced every month and are priced accordingly.