Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filters

I've used Filtrete filters for years, and they seem to work better than cheaper brands. The 20x20x1 fit is slightly too small for my home even though it's the correct size but still works. However, in an effort to be more sustainable, I switched to a reusable filter from another brand (which also has a sizing issue), so I bought this Filtrete one to put in briefly while the reusable one gets washed and dried. A reusable filter cost me approximately what a 4-pack of this Filtrete would cost so I made the switch. I rent, but still figured it was worth the investment and sacrificing convenience for less waste. If you stick with disposable filters, you can't go wrong with this Filtrete Allergen Defense. It seems to help my allergies especially since I recently got a pet. The most important thing is that you're changing the filter regularly.

Keeps the air clean and the system running smoothly. This Filtrete 20x20x1 MPR 1000 filter works great. It traps dust and allergens well, keeping both my heat pump and my lungs healthy. The build quality is solid, and it fits snugly without any gaps. I can tell a difference in air quality after installing it — less dust and cleaner airflow throughout the house. A dependable choice for anyone with allergies or pets. Helpful Insight: Replace these about once a month during heavy heating or cooling seasons — it keeps airflow strong and extends your system's life.