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MERV 13 Pleated AC Furnace Filter 20x25x1 Inch 6 Pack
National HVAC Parts

MERV 13 Pleated AC Furnace Filter 20x25x1 Inch 6 Pack

SKU: NHVAC-AIR -BXILK1 Brand: National HVAC Parts
$39.00 $52.65

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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MERV 13 Pleated AC Furnace Filter 20x25x1 Inch 6 Pack

20"x25"x1" MERV 13 pleated air filters for residential HVAC systems. MERV 13 filtration captures bacteria, smoke particles, and allergens as small as 0.3 microns while maintaining proper airflow to protect your equipment.

Key Features

  • MERV 13 rating — hospital-level filtration for homes
  • 6-pack for a full year of replacements (change every 60-90 days)
  • Electrostatically charged media captures particles without restricting airflow
  • Rigid cardboard frame for secure fit — no gaps around edges

Specifications

  • Application: Residential HVAC systems

What's Included

  • MERV 13 Pleated AC Furnace Filter 20x25x1 Inch 6 Pack

Ships same-day from our Houston warehouse on orders placed before 3PM CST.

Frequently Asked Questions

How often should I change my air filter?

1" filters: every 60-90 days (monthly if you have pets). 4-5" media filters: every 6-12 months. A dirty filter restricts airflow, raises energy bills, and can freeze your evaporator coil.

Is MERV 13 too restrictive for my system?

Most modern furnaces and air handlers handle MERV 13 without issues. Older systems with weak blower motors may need MERV 11 or lower. If you notice reduced airflow after upgrading, step down one MERV level.

What is the difference between MERV 8, 11, and 13?

MERV 8 catches dust and pollen. MERV 11 adds mold spores and pet dander. MERV 13 adds bacteria and smoke particles. Higher MERV = cleaner air but slightly more airflow resistance.

Does the filter direction matter?

Yes — install with the arrow pointing toward the blower/furnace (in the direction of airflow). The arrow is printed on the filter frame.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Air Filters & Indoor Air Quality fit my National HVAC Parts MERV 13 Pleated AC Furnace Filter 20x25x1 Inch 6 Pack?
Yes. This is the factory-specified OEM air filters & indoor air quality for the National HVAC Parts MERV 13 Pleated AC Furnace Filter 20x25x1 Inch 6 Pack. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the air filters & indoor air quality on my National HVAC Parts MERV 13 Pleated AC Furnace Filter 20x25x1 Inch 6 Pack?
Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.
What symptoms mean I need a new air filters & indoor air quality?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this air filters & indoor air quality compatible with Bryant or Payne too?
Many National HVAC Parts parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my National HVAC Parts air filters & indoor air quality?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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