GermGuardian FLT4100 Filter
Score: 85/100
Appliancemates HPA300 Replacement Filter
Score: 82/100Rankings
The GermGuardian FLT4100 is a genuine combination replacement filter featuring True HEPA filtration and activated carbon to capture 99.97% of particles down to 0.1 microns. It simplifies maintenance by combining pre-filter, HEPA, and carbon layers into one unit, though it carries a premium price. It is best suited for pet owners and allergy sufferers seeking warranty-compliant parts.
The Appliancemates HPA300 HEPA Replacement Filter meets HEPA 13 and MERV 17 standards, offering 99.97% efficiency for particles 0.3 microns and larger. The inclusion of 6 carbon pre-filters helps extend the life of the main HEPA filters, providing good value for Honeywell HPA300 series owners. While it lacks specific certification data, it is a reliable choice for users seeking high-efficiency filtration.
| Attribute | | |
|---|---|---|
6 months | 12 monthsbest | |
99.97 percentbest | 99.97 percentbest | |
| ↓ lower better | 0.1 micronsbest | 0.3 microns |
3best | — | |
| ↓ lower better | 0.2 lbsbest | — |
1 | 9best |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compatibility & Fit(1) | ||
Compatible Models | AC4100, AC4100CA, AC4175, AC4175W, AC4150P, AC4150BL, AC4150B, AC4150PCA, AC4150BLCA | Honeywell HPA300 Series |
Maintenance & Lifespan(1) | ||
Replacement Interval (months) | 6 months | 12 months |
Physical & Packaging(3) | ||
Weight (lbs) | 0.2 lbs | lbs |
Dimensions | 1.5 x 8.25 x 4.62 | 6.5 x 1.6 x 10.2 |
Package Quantity | 1 | 9 |
Filtration Performance(3) | ||
Filtration Standard | True HEPA | HEPA 13 / MERV 17 |
Minimum Particle Size Captured (microns) | 0.1 microns | 0.3 microns |
Target Contaminants | dust, allergens, bacteria, wildfire smoke, VOCs, pet odors | Dust, Pollen, Allergens |
Products in the top-left offer the best value (high score, low price).
Search results do not contain explicit professional reviews or editor evaluations. However, broad retail confidence is indicated by the product being stocked as a recommended genuine replacement at major authorized retailers including Staples, Walmart, Target, Lowe's, and Home Depot. Guardian Technologies emphasizes that using these specific filters maintains product performance and warranty coverage.
Detailed consumer reviews or user testimonials are not available in the provided data. Retailers recommend replacing the carbon filter every three months for optimal odor reduction while the HEPA filter should be replaced every six to eight months depending on usage intensity, suggesting that consumers with high-traffic homes, pets, or smokers may require more frequent replacements.
