Shopping for 16x25x4 TopTech filters? This is our most popular TopTech size! Compare genuine OEM, QuikBox, and our customer-favorite Atomic compatible filters below - all in stock and ready to ship.
✓ Compare 16x25x4 TopTech Filter Options:
| Filter Type |
Model # |
Price per filter |
Customer Rating |
| TopTech OEM Standard |
TT-FM-1625 |
$45.99 |
★★★★☆ (4.2/5) |
| TopTech QuikBox® |
TT-FM-1625QB |
$43.95 |
★★★★☆ (4.3/5) |
| Atomic Compatible |
AF-1625M11 |
$28.66 |
★★★★★ (4.9/5) |
Why 16x25x4 is Our #1 TopTech Size
The 16x25x4 (actual: 15.375" x 24.375" x 3.75") is the sweet spot for residential HVAC systems. It fits the majority of 3-5 ton systems and provides optimal airflow-to-filtration balance. This size is commonly used in:
- • TopTech TT-MAC-1627 cabinets
- • Carrier/Bryant 3-5 ton air handlers
- • Most suburban single-family homes
- • Systems upgraded from 1" to 4" filters
🏆 Why Customers Choose Atomic Compatible:
After analyzing 500+ reviews for this size:
- • 96% report equal performance to OEM TopTech filters
- • Average savings: $108/year (replacing every 6 months)
- • "Best value without compromise" - most common review phrase
- • 4.9/5 star rating from verified buyers
Installation & Compatibility Notes
QuikBox (QB) vs Standard: The QuikBox design features a collapsible frame for tool-free installation - perfect if you have limited clearance. Standard filters require sliding into tracks but cost slightly less. Both provide identical filtration.
Actual vs Nominal Size: All 16x25x4 filters actually measure 15.5" x 24.5" x 3.75". This 1/2" undercut ensures proper fit in your cabinet without forcing.
Ready to Ship Today
✅ All options in stock
✅ Order by 11:30 AM EST for same-day shipping
✅ Free shipping on orders
✅ 30-day money-back guarantee
📦 Best Deal: Buy a case of 3 Atomic compatible filters for $85.99 (just $28.66 each) - that's more than a full year supply with 45% savings vs OEM!
