The Clean Air Guide
MERV ratings, filter maintenance, indoor air quality tips, and more.
Illinois Ranks 4th Worst in the Nation for Air ...
Illinois ranks 48th out of 51 for air quality with a population-weighted AQI of 50.4. Guest author Tara Desmond of IL Corn breaks down the numbers, explains why indoor air...
Illinois Ranks 4th Worst in the Nation for Air ...
Illinois ranks 48th out of 51 for air quality with a population-weighted AQI of 50.4. Guest author Tara Desmond of IL Corn breaks down the numbers, explains why indoor air...
1-Inch vs 4-Inch Air Filters: The Complete Home...
Choosing between 1-inch and 4-inch air filters? Learn the differences in cost, lifespan, filtration, and HVAC compatibility to make the right choice for your home.
1-Inch vs 4-Inch Air Filters: The Complete Home...
Choosing between 1-inch and 4-inch air filters? Learn the differences in cost, lifespan, filtration, and HVAC compatibility to make the right choice for your home.
Where Is My Furnace Filter and Which Way Does t...
Can't find your furnace filter? Learn where to locate it in any HVAC system and which way the arrow should point for correct installation. Step-by-step guide.
Where Is My Furnace Filter and Which Way Does t...
Can't find your furnace filter? Learn where to locate it in any HVAC system and which way the arrow should point for correct installation. Step-by-step guide.
MERV 8 vs. MERV 11: Which Home Air Filter Is Be...
Confused about MERV 8 vs. MERV 11? Learn the key differences, pros and cons, and how to choose the right, energy-efficient filter for a healthier, cleaner home.
MERV 8 vs. MERV 11: Which Home Air Filter Is Be...
Confused about MERV 8 vs. MERV 11? Learn the key differences, pros and cons, and how to choose the right, energy-efficient filter for a healthier, cleaner home.
The Wildfire Smoke HVAC Prep Checklist (Updated...
Wildfire smoke is no longer a concern limited to areas directly affected by fires. Every summer, smoke from large wildfire events can travel hundreds or even thousands of miles, affecting...
The Wildfire Smoke HVAC Prep Checklist (Updated...
Wildfire smoke is no longer a concern limited to areas directly affected by fires. Every summer, smoke from large wildfire events can travel hundreds or even thousands of miles, affecting...
How to Read an Air Filter Label Without Getting...
Buying a new HVAC air filter should be a simple household task. However, many homeowners find themselves standing in an aisle or browsing online, confused by technical terms, unfamiliar ratings,...
How to Read an Air Filter Label Without Getting...
Buying a new HVAC air filter should be a simple household task. However, many homeowners find themselves standing in an aisle or browsing online, confused by technical terms, unfamiliar ratings,...
MPR, FPR, MERV: Decoding the 3 Air Filter Ratin...
Choosing a new HVAC air filter should be simple, but many homeowners find themselves comparing confusing numbers and unfamiliar terms. A Filtrete filter may show an MPR rating, and a...
MPR, FPR, MERV: Decoding the 3 Air Filter Ratin...
Choosing a new HVAC air filter should be simple, but many homeowners find themselves comparing confusing numbers and unfamiliar terms. A Filtrete filter may show an MPR rating, and a...
I Forgot to Change My Filter for 6 Months. Here...
It happens to the best of us. Life moves fast, and between work, family, and social commitments, the small white box in your hallway or basement often disappears from your...
I Forgot to Change My Filter for 6 Months. Here...
It happens to the best of us. Life moves fast, and between work, family, and social commitments, the small white box in your hallway or basement often disappears from your...
What a Dirty Air Filter Looks Like (With Photos)
Most homeowners understand that they should change their furnace filters regularly, but many struggle to identify the exact moment a filter transitions from "slightly used" to "system-damaging." Visual cues are...
What a Dirty Air Filter Looks Like (With Photos)
Most homeowners understand that they should change their furnace filters regularly, but many struggle to identify the exact moment a filter transitions from "slightly used" to "system-damaging." Visual cues are...
Will a Higher MERV Rating Damage Your HVAC System?
If you've ever upgraded to a higher-rated air filter and then noticed your system running harder than usual, you've asked the right question. Many homeowners wonder: Will higher MERV damage...
Will a Higher MERV Rating Damage Your HVAC System?
If you've ever upgraded to a higher-rated air filter and then noticed your system running harder than usual, you've asked the right question. Many homeowners wonder: Will higher MERV damage...
MPR vs MERV vs FPR: Decoding the 3 Air Filter R...
If you've ever stood in the filter aisle staring at a Filtrete box showing "MPR 1500" and another filter showing "FPR 7," you're looking at two proprietary numbers that tell...
MPR vs MERV vs FPR: Decoding the 3 Air Filter R...
If you've ever stood in the filter aisle staring at a Filtrete box showing "MPR 1500" and another filter showing "FPR 7," you're looking at two proprietary numbers that tell...
MERV 8 vs MERV 11 vs MERV 13: Which One Your Sy...
If you've ever asked an HVAC technician and an allergist the same question — "which air filter should I use?" you've probably gotten two completely different answers. The tech says...
MERV 8 vs MERV 11 vs MERV 13: Which One Your Sy...
If you've ever asked an HVAC technician and an allergist the same question — "which air filter should I use?" you've probably gotten two completely different answers. The tech says...
Reusable 14x24x1 Air Filters vs Disposable Guide
A 14x24x1 air filter is a common HVAC filter size, but choosing the right type can be confusing. Should you buy a reusable air filter you can wash, or use...
Reusable 14x24x1 Air Filters vs Disposable Guide
A 14x24x1 air filter is a common HVAC filter size, but choosing the right type can be confusing. Should you buy a reusable air filter you can wash, or use...
Do Air Purifiers Help Indoor Air Pollution? Ful...
Indoor air can contain dust, pollen, pet dander, smoke particles, mold spores, PM2.5, cooking particles, cleaning product emissions, and other pollutants. That is why many homeowners ask a simple question:...
Do Air Purifiers Help Indoor Air Pollution? Ful...
Indoor air can contain dust, pollen, pet dander, smoke particles, mold spores, PM2.5, cooking particles, cleaning product emissions, and other pollutants. That is why many homeowners ask a simple question:...
Are Allergen Air Filters Worth It? MERV & Cost ...
Advanced allergen air filters are often worth it for homes with pollen, pet dander, dust, mold spores, wildfire smoke concerns, or allergy-sensitive family members, as long as the filter's MERV...
Are Allergen Air Filters Worth It? MERV & Cost ...
Advanced allergen air filters are often worth it for homes with pollen, pet dander, dust, mold spores, wildfire smoke concerns, or allergy-sensitive family members, as long as the filter's MERV...
Do Eco-Friendly HVAC Filters Work for Wildfire ...
Yes, eco-friendly HVAC filters can help with wildfire smoke when they have the right filtration rating, fit your HVAC system correctly, and are changed often during smoke events. For wildfire...
Do Eco-Friendly HVAC Filters Work for Wildfire ...
Yes, eco-friendly HVAC filters can help with wildfire smoke when they have the right filtration rating, fit your HVAC system correctly, and are changed often during smoke events. For wildfire...
Air Quality by State 2026: Where Does Your Stat...
See how your state ranks for air quality in 2026. EPA data reveals the best and worst states for AQI, plus tips to improve your indoor air at home.
Air Quality by State 2026: Where Does Your Stat...
See how your state ranks for air quality in 2026. EPA data reveals the best and worst states for AQI, plus tips to improve your indoor air at home.
Top 7 Replaceable Air Filters for Cleaner Indoo...
The filter sitting inside your HVAC return duct is one of the most replaced household items nobody talks about. And yet, getting it wrong, picking the wrong thickness, the wrong...
Top 7 Replaceable Air Filters for Cleaner Indoo...
The filter sitting inside your HVAC return duct is one of the most replaced household items nobody talks about. And yet, getting it wrong, picking the wrong thickness, the wrong...
What Are Sustainable Air Filters and How Do The...
Most people replace their air filter, toss the old one in the trash, and never give it another thought. That is understandable. But multiply that moment by the roughly 330...
What Are Sustainable Air Filters and How Do The...
Most people replace their air filter, toss the old one in the trash, and never give it another thought. That is understandable. But multiply that moment by the roughly 330...
Tips to Use Your 20x25 Air Filter Effectively
Your 20x25 air filter handles more than most people give it credit for. Every time the HVAC system kicks on, that filter is catching dust, pollen, dander, and fine particles...
Tips to Use Your 20x25 Air Filter Effectively
Your 20x25 air filter handles more than most people give it credit for. Every time the HVAC system kicks on, that filter is catching dust, pollen, dander, and fine particles...
How to Improve Air Quality with the Right 14x24...
Most people think about air quality in terms of outdoor pollution, smog, smoke, and city air. But the U.S. Environmental Protection Agency has found that indoor air is often two...
How to Improve Air Quality with the Right 14x24...
Most people think about air quality in terms of outdoor pollution, smog, smoke, and city air. But the U.S. Environmental Protection Agency has found that indoor air is often two...
How to Extend the Life of Your Replaceable Air ...
Most homeowners don't think about their air filter until something's wrong. The airflow drops. There's a dusty smell that shouldn't be there. Or the energy bill just quietly climbs, and...
How to Extend the Life of Your Replaceable Air ...
Most homeowners don't think about their air filter until something's wrong. The airflow drops. There's a dusty smell that shouldn't be there. Or the energy bill just quietly climbs, and...
12x24 Air Filters: Installation & Maintenance G...
There's a good chance your home's air quality right now depends on a rectangle of pleated material that hasn't been touched in months. Swapping out a 12x24 air filter regularly...
12x24 Air Filters: Installation & Maintenance G...
There's a good chance your home's air quality right now depends on a rectangle of pleated material that hasn't been touched in months. Swapping out a 12x24 air filter regularly...
Install and Maintain 12x12 Filters for Optimal ...
Most people only discover a problem with their HVAC system once the symptoms are already obvious. The airflow from a vent drops off. The energy bill climbs without explanation. The...
Install and Maintain 12x12 Filters for Optimal ...
Most people only discover a problem with their HVAC system once the symptoms are already obvious. The airflow from a vent drops off. The energy bill climbs without explanation. The...
Why 12x12 Air Filters Are Perfect for Smaller H...
If you live in a studio, one-bedroom apartment, or a compact house under 900 square feet, there’s a good chance your HVAC system runs on a 12x12 air filter. Not...
Why 12x12 Air Filters Are Perfect for Smaller H...
If you live in a studio, one-bedroom apartment, or a compact house under 900 square feet, there’s a good chance your HVAC system runs on a 12x12 air filter. Not...
February Allergy Alert: Why Indoor Air Quality ...
Discover why February brings peak indoor allergy problems. Learn what triggers winter allergies, how sealed homes trap allergens, and practical solutions to improve air quality.
February Allergy Alert: Why Indoor Air Quality ...
Discover why February brings peak indoor allergy problems. Learn what triggers winter allergies, how sealed homes trap allergens, and practical solutions to improve air quality.
Allergies? Here's Which MERV Rating Air Filter ...
Confused about MERV ratings for allergies and asthma? Learn which MERV filter you actually need, how it affects your HVAC system, and eco-friendly options that keep your air clean.
Allergies? Here's Which MERV Rating Air Filter ...
Confused about MERV ratings for allergies and asthma? Learn which MERV filter you actually need, how it affects your HVAC system, and eco-friendly options that keep your air clean.
