If you want a premium, 12-month filtration solution with smart app integration for your Lennox system, choose Filtrete 20x25x5; if you need a practical, cost-effective MERV 11 filter with a built-in physical reminder magnet and eco-friendly packaging, choose RESIDEO Honeywell FC100A1037-20. This comparison cuts through the noise to help you decide which air filter fits your specific HVAC setup and maintenance habits without relying on fleeting market hype or confusing rankings.
• Filtrete 20x25x5: Offers superior long-term value with a 12-month lifespan and smart app tracking, but requires a slightly larger nominal fit and relies on digital reminders rather than physical markers.
• RESIDEO Honeywell FC100A1037-20: Provides a convenient same-day change reminder via a included magnet and eco-conscious reusable packaging, though it demands more frequent 6-month replacements.
• The Verdict on Fit: Choose Filtrete if you have a Lennox media air cleaner and want to minimize maintenance frequency; choose RESIDEO if you prefer tactile reminders and sustainable disposal methods.
This product is engineered for homeowners who prioritize longevity and advanced air quality management over low-maintenance simplicity. The Filtrete 20x25x5 comes in a two-pack specifically designed to fit Lennox brand media air cleaners, making it an ideal choice for owners of that specific equipment. Its dimensions are listed as 19.63 inches by 24.75 inches by 4.31 inches, which aligns with the nominal 20x25x5 size while accounting for the necessary clearance within the filter rack. If you own a Lennox system, this precise sizing ensures a snug fit that prevents unfiltered air from bypassing the media.
The core strength of this filter lies in its filtration technology. It boasts a MERV 11 rating paired with an MPR (Microparticle Performance Rating) of 1000. According to the manufacturer's data, this combination helps capture up to twice as many microparticles compared to filters using MERV ratings alone. This makes it particularly effective for households dealing with dust, lint, and other allergens. Furthermore, it carries a certification for being asthma and allergy-friendly, which adds a layer of credibility for families concerned about respiratory health. The "3-in-1 technology" mentioned in the specs suggests a multi-stage approach to trapping unwanted particles while allowing cleaner air to flow through, a feature that appeals to those seeking high-performance purification.
Maintenance is where this product truly distinguishes itself. You can go up to 12 months between changes, which is double the interval recommended for standard pleated filters. This extended lifespan reduces waste and the hassle of ordering new supplies. To ensure you never forget this schedule, the Filtrete Smart App allows you to set customizable reminders for 90, 180, or 365 days. This digital integration is perfect for tech-savvy users who manage their home systems via smartphone notifications. However, this reliance on a digital ecosystem means you must be comfortable setting up the app and ensuring your phone stays connected to keep the reminder active. If you struggle with digital tools or prefer a physical cue, this might not be the most straightforward option for your household routine.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-06 · 6 min read · Independent comparison
The RESIDEO Honeywell FC100A1037-20 bundle targets practical homeowners who value immediate visual cues and environmental responsibility in their maintenance routine. With actual dimensions of 19.94 inches by 24.88 inches by 4.38 inches, this filter fits the standard 20x25x4 nominal space. It delivers a solid MERV 11 rating, matching the filtration efficiency of the Filtrete model, but it approaches maintenance differently. Instead of a year-long gap, the manufacturer recommends replacement every six months. This shorter cycle ensures peak performance but requires more frequent attention from the homeowner.
What sets this bundle apart is its thoughtful inclusion of a "Same Day Supply Filter Change Reminder" magnet. Each filter comes with one magnet intended to be placed directly on the filter cabinet. This simple, analog tool provides an instant visual indicator of when the last change occurred, eliminating the guesswork of remembering dates or checking a digital calendar. For anyone who has ever forgotten to swap out a filter because they didn't check a phone app, this physical marker offers peace of mind. Additionally, the packaging design shows a commitment to reducing landfill waste. The filters arrive in individual clear plastic bags that are explicitly designed to be reused for disposing of old filters. This creates a closed-loop system for handling used, dusty filters without needing to buy extra trash bags or deal with loose debris.
The trade-off here is the increased frequency of maintenance. Changing a filter every six months means you will be ordering and installing them twice as often as with the 12-month alternative. While the MERV 11 rating provides excellent particle capture, it lacks the specific MPR 1000 marketing claim found in the Filtrete line, though both offer comparable standard filtration levels. This product is best suited for those who prefer a tangible, no-fuss reminder system and appreciate the convenience of reusable packaging. It is also an excellent choice for homes where digital reminders might be ignored or where the user prefers a simpler, non-connected approach to home maintenance.
• Best for Extended Lifespan → Filtrete 20x25x5 (12-month replacement cycle).
• Best for Physical Reminders → RESIDEO Honeywell FC100A1037-20 (Included change reminder magnet).
• Best for Lennox Systems → Filtrete 20x25x5 (Specifically designed to fit Lennox media air cleaners).
• Best for Eco-Conscious Disposal → RESIDEO Honeywell FC100A1037-20 (Reusable shipping bags for old filters).
• Best for Digital Integration → Filtrete 20x25x5 (Compatible with the Filtrete Smart App for custom reminders).
• Best for Standard Sizing → RESIDEO Honeywell FC100A1037-20 (Fits standard 20x25x4 nominal openings).
• Best for High-End Particle Capture Claims → Filtrete 20x25x5 (MPR 1000 rating with certified asthma/allergy-friendly status).
• Best for Low-Maintenance Frequency → Filtrete 20x25x5 (Fewer orders and installations per year).
I would personally choose the Filtrete 20x25x5 for my own home if I were prioritizing snow removal seasons and long winters. The extended 12-month lifespan is a massive advantage during harsh weather when you cannot easily access your furnace or AC unit. Knowing I only need to change it once a year saves me the hassle of climbing into cold attics or basements repeatedly. The MPR 1000 rating and asthma-friendly certification give me extra confidence that the air quality remains high throughout the heating season. However, if I lived in a home with a standard non-Lennox system or preferred physical magnets over apps, I would pivot to the RESIDEO Honeywell option. Ultimately, for reliability and reduced maintenance frequency, the Filtrete stands out as the stronger investment for serious air defense.
No, compatibility depends on your specific equipment. The Filtrete 20x25x5 is explicitly designed to fit Lennox brand media air cleaners, while the RESIDEO Honeywell FC100A1037-20 fits standard 20x25x4 nominal spaces. Always verify your system's requirements before purchasing.
The Filtrete 20x25x5 is rated for up to 12 months of use, whereas the RESIDEO Honeywell FC100A1037-20 requires replacement every 6 months according to the manufacturer's recommendations. This difference significantly impacts how often you need to order and install new units.
Yes, but in different ways. The RESIDEO Honeywell bundle includes a physical magnet reminder to mark the change date, while the Filtrete 20x25x5 integrates with a smart app that sends digital notifications based on your chosen timeline.
Both filters carry a MERV 11 rating, which indicates strong capability in capturing dust, lint, and other common household allergens. The Filtrete model additionally highlights an MPR 1000 rating and claims to capture up to 2X more microparticles than MERV alone, suggesting a potentially higher performance tier for fine particulates.
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