Master Flow
Master Flow WHFS24M Direct Drive Whole House Fan
$379.99Cheaper
Best Whole House Fans · head-to-head
Master Flow WHFS24M Direct Drive Whole House Fan vs CentricAir 3.4
A sourced, side-by-side comparison. Master Flow WHFS24M Direct Drive Whole House Fan is cheaper at $379.99. Every spec and price links to its source.
CentricAir
CentricAir 3.4
$1449
Which is better: the Master Flow WHFS24M Direct Drive Whole House Fan or CentricAir 3.4?
On the specs we track, they're closely matched. The Master Flow WHFS24M Direct Drive Whole House Fan is the cheaper at $379.99.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Master Flow WHFS24M Direct Drive Whole House Fan | CentricAir 3.4 |
|---|---|---|
| US price | $379.99 | $1449 |
| Brand | Master Flow | CentricAir |
| Released | — | — |
| Airflow (CFM) | 4,500 CFM | 3,242 / 1,409 CFM (high/low, CA Title 24 / HVI-916 rated) |
| Coverage (sq ft) | up to 2,000 sq ft | up to 2,500 sq ft (1-story) / up to 3,400 sq ft (2-story) |
| Speed settings | — | 2 |
| Drive type | direct_drive | ducted |
| Insulated damper | No | Yes |
| Remote or app control | No | Yes |
| Sound level note | — | 49 dBA high / 47 dBA low |
| Motor warranty years | — | 15 |
Sources — Master Flow WHFS24M Direct Drive Whole House Fan: thelumberyard.com (verified 2026-08-16). CentricAir 3.4: centricair.com (verified 2026-08-16).
What's the difference between the Master Flow WHFS24M Direct Drive Whole House Fan and CentricAir 3.4?
Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.
- Airflow (CFM): Master Flow WHFS24M Direct Drive Whole House Fan 4,500 CFM vs CentricAir 3.4 3,242 / 1,409 CFM (high/low, CA Title 24 / HVI-916 rated)
- Coverage (sq ft): Master Flow WHFS24M Direct Drive Whole House Fan up to 2,000 sq ft vs CentricAir 3.4 up to 2,500 sq ft (1-story) / up to 3,400 sq ft (2-story)
- Drive type: Master Flow WHFS24M Direct Drive Whole House Fan direct_drive vs CentricAir 3.4 ducted
- Insulated damper: Master Flow WHFS24M Direct Drive Whole House Fan false vs CentricAir 3.4 true
- Remote or app control: Master Flow WHFS24M Direct Drive Whole House Fan false vs CentricAir 3.4 true