If you want a high-efficiency, disposable filter solution optimized for rapid particle capture and low airflow resistance in standard residential systems, choose BNX TruFilter 16x20x1; if you need a durable, long-lasting filtration unit designed specifically for Lennox-compatible air cleaners with minimal maintenance, choose HEALTHY CLIMATE Lennox X6670.
• BNX TruFilter 16x20x1: Offers superior MERV 13 filtration for smoke and microscopic particles with electrostatic technology, but requires frequent replacement as a single-use item.
• HEALTHY CLIMATE Lennox X6670: Delivers reliable MERV 11 performance with a massive four-inch depth and a one-year lifespan, though it is limited to specific HVAC compatibility.
• The Verdict: Choose the BNX for broad, high-capture efficiency in standard ducts, and pick the Healthy Climate for a "set-it-and-forget-it" approach on compatible Lennox equipment.
The BNX TruFilter 16x20x1 is engineered for homeowners who prioritize maximum air purity without sacrificing system airflow. Its core strength lies in its MERV 13 rating, which is significantly higher than many standard filters. According to the manufacturer's data, this filter utilizes electrostatically charged media to capture 98% of airborne particles. This includes not just dust and lint, but also microscopic threats like virus carriers, bacteria, smoke, pollen, and pet dander. If your primary concern is eliminating allergens or dealing with heavy smoke from wildfires or cooking, this filter provides a robust defense layer that standard fiberglass options simply cannot match.
The physical design is another critical factor for buyers. The actual dimensions are 15.69 x 19.69 x 0.75 inches, making it a true drop-in replacement for nominal 16x20x1 slots. What stands out is the slim profile combined with industry-leading low airflow resistance. Many high-MERV filters restrict airflow, causing your HVAC fan to work harder and potentially shortening the unit's life. BNX claims their electrostatic pleating technology avoids this pitfall, allowing air to pass through efficiently while trapping contaminants. This makes it an ideal choice for homes where the HVAC system might struggle with thicker, denser media.
However, this product is strictly a disposable solution. You receive a six-pack, meaning you will be changing these filters regularly rather than once a year. While the cardboard frame is made sustainably from recycled materials and manufactured in the USA, the trade-off is ongoing cost and waste management compared to permanent units. This filter is perfect for people who live in areas with poor outdoor air quality, have pets that shed heavily, or suffer from severe allergies and need the highest possible capture rate available in a standard slot size. It is less suitable for those who prefer a hands-off approach to maintenance or who own older systems that might not handle even slight pressure changes well, despite the low-resistance claim.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-08 · 6 min read · Independent comparison
The HEALTHY CLIMATE Lennox X6670 serves a very different purpose, acting as a dedicated component for specific heating and cooling setups rather than a general-purpose replacement. Its most defining characteristic is the thickness; with an actual depth of 4.38 inches, it offers a massive surface area compared to the quarter-inch thickness of standard filters. This extra volume allows the filter to last up to one year before needing replacement, depending on your home's condition. For busy households or commercial spaces like offices and schools where frequent maintenance is inconvenient, this longevity is a game-changer. You essentially install it and forget about it until next year.
In terms of filtration capability, this unit carries a MERV 11 rating. While lower than the BNX's MERV 13, MERV 11 is still considered a high-performance rating capable of capturing a wide range of impurities as small as 1.0 to 3.0 microns. It effectively handles common household pollutants like dust mites, mold spores, and large pollen grains. The inclusion of a cleaning cloth in the package is a thoughtful touch, encouraging users to wipe down the furnace or air handler before installation to ensure optimal airflow. This suggests the product is part of a broader ecosystem focused on maintaining clean internal components, not just swapping out paper elements.
The major constraint here is compatibility. The X6670 is explicitly designed to fit X6660 HCC16-28 Air Cleaners and select Lennox, Carrier, and Honeywell systems. It has a nominal measurement of 16x25x5, which is significantly larger than the BNX. If your system does not accommodate a four-inch deep filter or lacks the specific mounting bracket for the X6670, this product is useless to you regardless of how good the specs look. It is the clear winner for owners of compatible Lennox equipment who want a premium, long-life upgrade that reduces the frequency of filter swaps. It is less ideal for generic HVAC systems that only accept one-inch filters, as it physically won't fit.
• Best for Maximum Particle Capture → BNX TruFilter 16x20x1 (MERV 13 captures 98% of microscopic particles including viruses and smoke).
• Best for Longevity and Low Maintenance → HEALTHY CLIMATE Lennox X6670 (Lasts up to 12 months versus regular replacement cycles).
• Best for Standard One-Inch Slots → BNX TruFilter 16x20x1 (Fits 16x20x1 openings perfectly with a 0.75-inch depth).
• Best for Deep Media Efficiency → HEALTHY CLIMATE Lennox X6670 (4.38-inch depth provides massive surface area for airflow and capacity).
• Best for Smoke and Allergy Defense → BNX TruFilter 16x20x1 (Electrostatic media specifically targets smoke, bacteria, and allergens).
• Best for Specific HVAC Ecosystems → HEALTHY CLIMATE Lennox X6670 (Designed exclusively for Lennox X6660 and compatible units).
• Best for Eco-Conscious Buyers → BNX TruFilter 16x20x1 (Made in USA with sustainable recycled cardboard frames).
• Best for Commercial or High-Traffic Homes → HEALTHY CLIMATE Lennox X6670 (Recommended for offices and schools due to extended service life).
For my personal recommendation, I would choose the HEALTHY CLIMATE Lennox X6670 if you own a compatible Lennox system, primarily because the one-year lifespan offers unparalleled convenience and value over time. However, if you are looking for the absolute best filtration for hunting trips or remote cabins where air quality can degrade rapidly with smoke and dust, the BNX TruFilter 16x20x1 is the superior choice. Its MERV 13 rating and electrostatic charge provide a level of protection against smoke and microscopic particulates that the MERV 11 unit simply cannot match in a compact form. In a hunting scenario, catching smoke and odors quickly is vital, and the BNX delivers that performance where it matters most. Ultimately, go with the BNX for raw filtration power and the Healthy Climate for hassle-free, long-term maintenance on compatible hardware.
Yes, the BNX TruFilter holds a MERV 13 rating and uses electrostatic media to capture 98% of microscopic particles, including smoke and virus carriers, whereas the Healthy Climate is rated MERV 11.
This filter is designed to last up to one year, depending on your home's conditions, whereas standard one-inch filters typically require replacement every three months.
No, the Healthy Climate filter is a four-inch deep unit (16x25x5 nominal) designed specifically for compatible air cleaners like the X6660 and will not fit standard one-inch slots.
According to the specifications, the BNX filter maintains industry-leading low airflow resistance despite its MERV 13 rating, ensuring it does not strain your HVAC system.
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