Exactly how often to change MERV 11 filter at home
Determining exactly how often to change MERV 11 filter setups can feel like a bit of a guessing game, especially when you start reading conflicting advice online. While the general guideline for these higher-efficiency filters is usually around every three months, the reality is that the house might need a brand new one much sooner—or, if you're lucky, you might be able to stretch it out a bit longer. ...