Clear Advice for Cleaner Air
In a pre-2010 HVAC system with a fixed-speed blower motor, a 22x22x1 MERV 13 filter can behave like one that’s already half-clogged—from the moment you install it. The system runs longer to reach temperature, the energy bill climbs, and the air quality improvement—while real—costs more to deliver than most homeowners expect. Here’s what most filter … Read more
Wichita’s air doesn’t warn you. On a hot June afternoon, ground-level ozone can push the Air Quality Index (AQI) well into the orange range while the sky looks clear and the weather app shows nothing unusual. Agricultural dust from surrounding farmland, emissions from Sedgwick County’s industrial operations, and seasonal ozone formation all contribute to readings … Read more
During Nashville’s January 2026 ice storm, more than 20 people showed up at emergency rooms with carbon monoxide poisoning in a single 24-hour stretch. Most of them had done exactly what you’d expect when the power went out: fired up a generator, closed the doors against the cold, and waited for the heat to kick … Read more
Pull a gray 21.5x24x1 filter from your return vent and the temptation makes sense. Rinse it off, let it dry, slide it back in, save the cost of a new one. We’ve run this test at FilterClarity.com more times than we’d like to count. The filter goes back in looking usable and immediately stops working … Read more
Pull up Stockton’s AQI on a July afternoon and you might see a number that changes your plans entirely. Wildfire smoke rolling in from the Sierra Nevada foothills can push that reading from Moderate to Unhealthy within a few hours, with almost no warning. San Joaquin County holds a federal nonattainment designation for both ozone … Read more
Most Nebraskans check the weather before heading outside. Fewer check the AQI. That gap matters more than most people realize, especially from June through October, when wildfire smoke drifts east from the Rockies and agricultural burns push PM2.5 levels well above what a standard MERV 8 filter can handle. At FilterClarity.com, we track regional air … Read more
A $3,000 attic insulation removal that balloons to $9,000 after the contractor finds mold, vermiculite, and buried junction boxes. We’ve heard that story from FilterClarity.com readers more times than we can count. The baseline estimate looked right at $1 to $2 per square foot. Then the actual attic told a different story. Most attic insulation … Read more
Tucson’s Air Quality Index can go from “Good” to “Unhealthy” in under an hour. We track air quality data across the Southwest at FilterClarity.com, and no city in our coverage area shifts that fast when a haboob pushes through or wildfire smoke drifts down from the surrounding forests. Three seasonal forces drive Tucson’s AQI: monsoon … Read more
Check your Jacksonville AQI right now and you’ll see a number that has a direct line to what you’re breathing inside your home — but almost nobody treats it that way. Most residents check the weather before heading out. Few check the air quality. We think that’s worth changing. The EPA has found that indoor … Read more
Pull your dryer away from the wall and you will likely find more than just dust. At FilterClarity.com, we have investigated this exact problem across dozens of reader situations and found that excessive lint behind the dryer almost always traces back to one of a few fixable root causes most homeowners never consider. The lint … Read more