Best HVAC Filters 2026: Top Picks for Clean Air & System Protection
We tested 15+ HVAC filters for particle capture, airflow impact, and value. Here's how to choose the right MERV rating and our top picks for every need.
Our Top Picks
Understanding MERV Ratings
MERV (Minimum Efficiency Reporting Value) measures how well a filter captures particles. Higher isn't always better—too high can restrict airflow and damage your system.
Our Recommendation: MERV 11-13 hits the sweet spot for most homes. It captures allergens without restricting airflow. Check your system's max MERV rating in the manual—most handle MERV 13 fine, but older systems may need MERV 11 or lower.
Detailed Reviews
Filtrete 1900 (MERV 13)
What We Like
- Excellent filtration without restricting airflow
- Captures 99% of airborne particles
- Electrostatically charged for better capture
- Fits most standard systems
What Could Be Better
- Premium price
- May need more frequent changes in dusty homes
- Overkill for some households
Our Verdict: The best balance of filtration and airflow for most homes. MERV 13 captures COVID-sized particles while working with standard HVAC systems.
Nordic Pure MERV 12
What We Like
- Excellent price per filter
- Made in USA
- Consistent quality
- Great for allergies
What Could Be Better
- Slightly lower filtration than MERV 13
- Less brand recognition
- Fewer size options
Our Verdict: Best value for allergy sufferers. Nordic Pure delivers near-premium filtration at a budget price. The 6-packs make subscription-free buying easy.
Filtrete Basic (MERV 5)
What We Like
- Very affordable
- Maximum airflow
- Protects HVAC equipment
- Change monthly for best results
What Could Be Better
- Minimal allergen capture
- Won't help with pet dander or smoke
- Needs frequent changes
Our Verdict: Good for households without allergies or pets. Protects your HVAC from large particles at minimal cost. Not recommended for air quality concerns.
Honeywell Elite Allergen (MERV 13)
What We Like
- Antimicrobial coating
- Captures microscopic allergens
- Trusted brand
- Good for respiratory issues
What Could Be Better
- Higher price
- Slightly more airflow restriction
- Antimicrobial may not matter much
Our Verdict: Best for severe allergy sufferers. The antimicrobial coating provides extra peace of mind, though Filtrete 1900 performs similarly at lower cost.
Filtrete Deep Pleat (MERV 12)
What We Like
- Only change 1-2x per year
- More surface area = better airflow
- Great filtration
- Less hassle
What Could Be Better
- Requires 4" filter slot
- Higher upfront cost
- Not compatible with all systems
Our Verdict: If your system takes 4" filters, this is the way to go. Better filtration, better airflow, and you only change it twice a year.
How to Find Your Filter Size
- 1Check your current filter. The size is printed on the frame (e.g., 20x20x1, 16x25x4).
- 2Measure if no label. Measure length × width × depth. Round to nearest inch.
- 3Check actual vs nominal size. A "20x20x1" filter is actually ~19.5x19.5x0.75". This is normal—order the nominal size.
Common sizes: 16x20x1, 16x25x1, 20x20x1, 20x25x1, 20x25x4. If you have an odd size, Filtrete and Nordic Pure offer the most size options.
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