Replacement Air Filter Sizing: Nominal vs. Actual
Air filters are sold by nominal size, not the size they actually measure. A filter labeled 20x25x1 is closer to 19.5 x 24.5 x 0.75 inches, and that gap is...
Helpful Tips
Replacement Air Filter Sizing: Nominal vs. Actual
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Where Is My Furnace Air Filter Located?
Most furnace filters are in the blower compartment - but where that is depends entirely on your system type. This guide covers every common HVAC setup, including upflow, downflow, horizontal,...
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Are Tenants Responsible For Changing Air Filters?
In most rental properties, changing the air filter is the tenant's job - and ignoring it can cost you your security deposit. But the legal picture is more nuanced than...
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Air Filters for Pet Allergies: What Actually Works
This article covers pet allergies, pet dander, and how HVAC air filters - specifically MERV 11 and MERV 13 filters - can reduce airborne allergens in your home. It's written...
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Which Way Should the Arrow Point on an Air Filter?
There is a printed arrow on the edge of every air filter. That arrow tells you everything - it points toward the furnace, following the direction air actually moves through...
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The Spring Air Quality Reset Guide for Pet Owners
Learn how to effectively remove pet dander and allergens during your spring cleaning routine. Our guide covers air filters, cleaning hacks, and grooming tips to get your home ready for...
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Best Airbnb Air Filters for 5-Star Guest Comfort
Being an Airbnb or VRBO host is a business. And in this business, guest reviews are everything. A single bad review about a musty scent or a dusty room can...
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Winter Home Maintenance Checklist
Tips to help you prepare your home for Winter Updated: 2/13/26 Get ready for winter and make sure your home is prepared for efficiency with high-quality air filtration and heating...
