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Air filter issues heating season problems are one of the most common reasons a furnace runs harder than it should. In our dispatch queue, weak airflow and no-heat calls spike every year between November and February, and a clogged filter is behind most of them. A clogged filter chokes off airflow, forces the blower to … Read more
A customer called us last month about a 1-inch MERV 13 filter he’d installed three weeks earlier. His air conditioner was cycling every ten minutes, and the bedroom at the end of the hall felt stuffy. The filter was the correct size. His system was installed in 2003. The math didn’t work. Here’s the good … Read more
Wood smoke particles fall between 0.1 and 2.5 microns wide. Most 1-inch furnace filters can’t catch the small end of that range, which is why your neighbor’s stove ends up circulating through your living room by dinnertime. That’s the service call we take most often when cold snaps push neighbors to fire up their stoves. … Read more
Thirty-one percent of all residential dryer fires start because someone never cleaned the vent. The U.S. Fire Administration tracked that number between 2018 and 2020, and it holds steady year after year (usfa.fema.gov). Roof-vented dryers sit at the top of the risk list. Lint has to travel upward against gravity through a longer duct run … Read more
Most days, Seattle’s air reads clean. Then August arrives, the wind shifts east, and by mid-morning, the Cascades are invisible and your eyes are burning. That’s not hypothetical. We’ve watched it happen to this region every fire season since 2015, and the monitoring data from King County confirms it. The live air quality index map … Read more
Choosing the Right 16x25x4 Air Filter for Your Home Needs When homeowners ask me which 16x25x4 filter to buy, the first thing I tell them is this: the MERV rating matters more than the brand. I have reviewed enough filter setups to know that picking the wrong rating causes real problems. Either you are under-filtering … Read more
Most homeowners don’t connect a lingering headache or a scratchy throat to the smoke from a pan that burned an hour ago — and that’s exactly the problem our certified technicians at Thermix HVAC see time and again. When we respond to calls about poor indoor air quality, mild smoke inhalation from everyday household sources … Read more
When wildfire smoke shows up, most advice online jumps straight to “buy the highest MERV you can.” In the field at ThermixHVAC.com, we’ve seen that approach backfire—homeowners install a super-dense filter, airflow drops, the system runs longer, and the house still smells smoky because smoke doesn’t behave like “regular dust.” This page gives you the … Read more
Installing a 29x29x2 air filter sounds straightforward — until unfiltered air starts slipping past a poor seal and your HVAC system works harder than it should. With decades of combined experience in indoor air quality solutions and system maintenance, our certified technicians at Thermix HVAC have seen firsthand how a few simple installation missteps with … Read more
A wrong-size 16x30x2 air filter doesn’t just underperform — it quietly damages your HVAC system every hour it runs. At ThermixHVAC.com, we’ve seen firsthand how a filter that’s even a fraction of an inch off allows unfiltered air to bypass the media entirely, forcing blower motors to work harder and accelerating wear on components that … Read more