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 AirScape 1.7 (1.7 WHF-XR)
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.
AirScape
AirScape 1.7 (1.7 WHF-XR)
$996
Which is better: the Master Flow WHFS24M Direct Drive Whole House Fan or AirScape 1.7 (1.7 WHF-XR)?
On the specs we track, they're closely matched. The Master Flow WHFS24M Direct Drive Whole House Fan is the cheaper at $379.99.
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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 | AirScape 1.7 (1.7 WHF-XR) |
|---|---|---|
| US price | $379.99 | $996 |
| Brand | Master Flow | AirScape |
| Released | — | — |
| Airflow (CFM) | 4,500 CFM | 1,712 / 1,000 CFM (high/low) |
| Coverage (sq ft) | up to 2,000 sq ft | up to 1,500 sq ft |
| Speed settings | — | 2 |
| Drive type | direct_drive | direct_drive |
| Insulated damper | No | Yes |
| Remote or app control | No | No |
| Sound level note | — | 55 dBA high / 44 dBA low, measured at 1 meter |
| Motor warranty years | — | 3 |
Sources — Master Flow WHFS24M Direct Drive Whole House Fan: thelumberyard.com (verified 2026-08-16). AirScape 1.7 (1.7 WHF-XR): airscapefans.com (verified 2026-08-16).
What's the difference between the Master Flow WHFS24M Direct Drive Whole House Fan and AirScape 1.7 (1.7 WHF-XR)?
Where the two actually differ on the specs we track (3 of 8). Matching specs are omitted.
- Airflow (CFM): Master Flow WHFS24M Direct Drive Whole House Fan 4,500 CFM vs AirScape 1.7 (1.7 WHF-XR) 1,712 / 1,000 CFM (high/low)
- Coverage (sq ft): Master Flow WHFS24M Direct Drive Whole House Fan up to 2,000 sq ft vs AirScape 1.7 (1.7 WHF-XR) up to 1,500 sq ft
- Insulated damper: Master Flow WHFS24M Direct Drive Whole House Fan false vs AirScape 1.7 (1.7 WHF-XR) true