Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey) vs Noctua NF-A14 PWM, Premium Quiet Fan, 4-Pin (140mm, Brown)
Side-by-side comparison based on Reddit community data

#3 in Air Purifiers
N/A
Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey)
$16.45
100/100Excellent
100% positive0% neutral0% negative
Pros
- +Absolute best on the market
- +Easy to replace parts (fan $15, filters $30)
- +High cadr per db
- +Whisper quiet at high speed
- +Solid builds (from vendors)
โcomputer fan CR boxes are the absolute best on the market... If a fan dies, you replace it (15$). The filters become saturated, you replace them (30$ vs 80$+). And most of all: CADR per dB. ... whispeโ

#10 in Air Purifiers
Noctua
Noctua NF-A14 PWM, Premium Quiet Fan, 4-Pin (140mm, Brown)
$24.95
100/100Excellent
100% positive0% neutral0% negative
Pros
- +Chosen for an upgrade
- +Part of a good combo of parts
โIt will have 4 Noctua NF-A14 fans as exhaust, 8 as intake.โ