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Furnace Parts DIY
Lennox Air Filter and Cleaner 345-084 furnace replacement part

Furnace Parts DIY

345-084

$69.00

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

Name

20" X 20" X 5" HEALTHY CLIMATE MERV 13 ACTUAL SIZE 20" X 19-3/4" X 4-3/8" FITS 20" X 20" X 4"

Low stock — only 1 left

Pickup available at 75 Blue Mountain St #3, Coquitlam

Usually ready in 24 hours

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Not sure this fits your furnace? Call us — we're happy to help

Product Details

Description

Enhance your home's indoor air quality with this high-efficiency MERV 13 replacement air filter. Engineered for residential HVAC systems, this premium pleated media filter is designed to capture a high percentage of airborne contaminants, including dust, pollen, pet dander, mold spores, and even microscopic particles. By utilizing a high-density filtration material, it helps protect your furnace and air conditioning equipment from debris buildup, ensuring optimal system performance and energy efficiency. Ideal for households with allergy sufferers or pets, this filter provides superior protection compared to standard fiberglass alternatives. Its versatile design allows it to fit common whole-home air cleaner cabinets originally configured for both 20x20x5 and 20x20x4 nominal sizes, making it a reliable choice for maintaining a clean and healthy living environment.

Specifications

Type
Air Filter
Size
20" x 20" x 5"
Dimensions
20 in × 19-3/4 in × 4-3/8 in
Application
Designed for use in central HVAC systems, residential furnaces, and whole-house air cleaner housings to remove airborne pollutants.
Specifications
MERV 13 filtration rating; high-capacity pleated media; nominal 5-inch thickness; actual thickness 4-3/8 inches; fits 4-inch and 5-inch nominal depth systems.

Not sure this is the right part?

Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.

1-778-759-9864

Mon–Sat 8AM–5PM PT · Or email parts@bcfurnace.com

Common questions

Is the 345-084 a genuine Lennox part?

Yes. The 345-084 is a genuine Lennox OEM part, sourced from an authorized Lennox parts distributor. This Air Filter and Cleaner is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.

How do I know if the 345-084 is compatible with my furnace?

The easiest way is to match the part number (345-084) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Air Filter and Cleaners for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.

How fast can I get the 345-084 shipped?

Most Air Filter and Cleaners including the 345-084 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.

Can I pick up the 345-084 at your store?

Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Air Filter and Cleaners orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 345-084 is in stock before visiting.

Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.

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