14x20x1 MERV 11 Air Filter — 12-Pack

The 14x20x1 MERV 11 air filter 12-pack ships free from Cedars HVAC, is made in the USA, and gives you a full year of monthly replacements at a lower per-filter cost than any big-box store.

What’s In Your 14x20x1 MERV 11 12-Pack

This case contains 12 individual 14x20x1 pleated air filters, MERV 11, ready to install as-is with no cutting or trimming required. 14x20x1 is a compact return size common in older Florida bungalows, hallway returns, and finished-basement builds. Homes built pre-1980 in South Miami often show this size at the ceiling grille above a coat closet or utility corridor. Homeowners, landlords, and property managers especially appreciate having a full year’s supply on the shelf — no more emergency runs to the hardware store, no more running the wrong-size filter just because it’s what was left on the shelf.

Some homeowners call it a furnace filter, others call it an air filter, an AC filter, or an HVAC filter. Either way, this 14x20x1 pleated case of 12 is sized to match your existing return grille or filter rack.

What Does MERV 11 Filtration Actually Do?

MERV stands for Minimum Efficiency Reporting Value — an ASHRAE-standardized rating that describes how well a filter captures airborne particles by size. MERV 11 captures everything MERV 8 captures plus finer particulates: mold spores, pet dander, fine dust, and auto emissions.

Particulate range captured: 1.0 to 3.0 microns (fine dust, mold spores, pet dander, some bacteria carriers). Airflow: good airflow — noticeably more filtration than MERV 8 with only a modest airflow tradeoff on most modern HVAC systems. This rating is a strong match for households with mild to moderate allergies, pet owners, homes near construction sites, and anyone in the middle of South Florida wildfire smoke season.

Specifications

• Nominal Size: 14x20x1 inches
• Actual Size: 13.5 x 19.5 x .75 inches
• MERV Rating: 11
• Thickness: 1-inch
• Filter Media: Electrostatic pleated synthetic
• Frame: Beverage-board (moisture-resistant paperboard)
• Support: Galvanized steel mesh
• Quantity: 12 filters (one full year of monthly replacements)
• Made In: USA
• Sold By: Cedars HVAC (Miami, FL)

How Often Should You Replace a 14x20x1 MERV 11 Filter?

For a 1-inch MERV 11 filter like this one, plan on replacing every 60 to 90 days. MERV 11 media is denser than MERV 8, so it doesn’t clog as quickly — but a filter that’s overdue starts restricting airflow rather than helping it. With 12 filters in the case, you are set up to swap on a 60-to-90-day schedule for a 12-to-18-month cycle without running short.

Why South Florida Homes Change Filters Faster

Miami-Dade and Broward homes cycle their HVAC harder than almost anywhere in the country. Between year-round cooling load, elevated indoor humidity, salt air near the coast, seasonal Saharan dust events, and increasingly common wildfire smoke drift from the Everglades, filters here saturate faster than the national average. If you are in South Florida, err on the shorter end of the replacement window — especially if you have pets or run your system continuously in July and August.

Free Shipping, No Minimum, Ships from Miami

No shipping charges. No surprise fees at checkout. No minimum order value. This 14x20x1 case ships free anywhere in the continental United States. These air filters are manufactured in the USA and shipped directly to your door on Cedars HVAC’s behalf. Stock up once, install on schedule, and don’t think about your furnace filter again until next year.

Frequently Asked Questions

How do I know if 14x20x1 is the right size for my system?

Check your existing filter. The size printed on the side or edge — normally a set of three numbers like 14x20x1 — is the nominal size. It should match this listing exactly. If your current filter reads 20x14x1 instead, that is the same size — filter width and height are interchangeable in most return-grille and filter-rack installations. If your existing filter shows an actual dimension (e.g. 13.5 x 19.5 x .75 inches), that is the manufactured cut size and confirms 14x20x1 nominal.

Can I upgrade my system to MERV 11?

Yes for the vast majority of residential systems. MERV 11 is the sweet spot between filtration and airflow for modern furnaces and air handlers. If your system is older than 20 years or has documented blower-motor problems, ask your HVAC tech to verify static pressure before switching from MERV 8 to MERV 11.

How fast does shipping arrive?

Most orders ship within one business day. Continental US delivery is typically 3 to 5 business days after ship. Cedars HVAC uses tracked, insured shipping on every filter case, and you will receive a tracking number by email as soon as the case leaves the fulfillment warehouse.

Do you offer bulk pricing on multiple 14x20x1 MERV 11 cases?

Yes — property managers, landlords, and multi-family owners can email [email protected] or call (305) 850-6693 for volume pricing on 3 or more cases of the same size. Contractors and multi-family accounts can also apply for a wholesale account for standing discounts.