Reporting What Matters Most: The Air You Breathe.
We measured airborne dander concentrations in a two-dog household the morning after a grooming session and tracked the readings for 72 hours. Without a properly rated filter running, levels stayed elevated well past that window. That result is not unusual. Pet dander in home environments behaves nothing like ordinary household dust, and that distinction is … Read more
Skip the filter long enough and the compressor pays for it. Our testing team has tracked this pattern across dozens of residential and commercial cooling systems, in climates from desert to coastal, and the sequence rarely changes: restricted airflow leads to fouled coils, fouled coils push the compressor harder, and the compressor eventually gives way … Read more
The homeowner’s return slot measured 21.5 by 24 inches. He had been loading a 21x24x1 into it for three years. That half-inch gap at the frame edge was routing unfiltered air around the media on every cycle, and none of the filters he installed could perform at their rated efficiency because the seal was never … Read more
The weather app said 75 degrees and partly cloudy. The SCAQMD monitors read 214. Both were measuring Irvine on the same October afternoon in 2020, and only one was tracking what mattered to your lungs. That is the gap we track. Irvine California air quality and the local weather forecast pull from different systems and … Read more
Check Henderson’s weather app on any June afternoon and you’ll get an accurate reading on the temperature. You won’t get an accurate reading on the air. The weather app reads 112 degrees, sunny, light breeze. The Henderson air quality index reads 108. Code Orange. Those are two different instruments measuring two different things. On most … Read more
On a June afternoon in 2023, the sky over Raleigh turned the color of old pennies. Canadian wildfire smoke had traveled hundreds of miles at altitude and pushed the city’s AQI into Code Red. The weather app said partly cloudy, 84 degrees. A great day to be outside, by every visible sign. That’s the gap … Read more
The AC-only quote is almost always the cheaper number. That’s not the same thing as the cheaper decision. We’ve tracked this long enough to see the pattern. A homeowner approves an AC-only replacement because it costs $3,000 less than the full system quote. Two years later, the furnace fails. They pay labor twice, buy equipment … Read more
We pulled a dryer duct last year that had not been touched since the machine was installed. The homeowner’s clothes were taking 90 minutes to dry. He had assumed it was the dryer aging out. It was the duct. That gap between what homeowners think is happening and what is actually happening inside the exhaust … Read more
We’ve pulled filters from homes under clear skies and found PM2.5 loads that matched active smoke events. Wildfire smoke arrives invisible — hours ahead of the smell, ahead of any weather alert. This live AQI tracker pulls zip-code-level readings from EPA AirNow monitoring stations, cross-referenced with active NIFC fire perimeters — the same data our … Read more
At TheFilterReport, we’ve tested and tracked filter performance across dozens of homes and HVAC systems — and winter consistently tells the same story: the moment people seal their homes for the cold, airborne allergen levels climb. Dust mites don’t hibernate; they capitalize on the warm, humid pockets created by running furnaces and closed ventilation, flooding … Read more