# Air Vent 24 in. Direct Drive Whole House Fan (54301) vs Master Flow WHFS24M Direct Drive Whole House Fan: specs and price compared

A sourced, side-by-side comparison of the Air Vent 24 in. Direct Drive Whole House Fan (54301) (Air Vent) and Master Flow WHFS24M Direct Drive Whole House Fan (Master Flow) among whole house fans.

## Side by side

| Spec | Air Vent 24 in. Direct Drive Whole House Fan (54301) | Master Flow WHFS24M Direct Drive Whole House Fan |
| --- | --- | --- |
| US price | not published | $379.99 |
| Brand | Air Vent | Master Flow |
| Airflow (CFM) | 3,500 CFM | 4,500 CFM |
| Coverage (sq ft) | up to 1,500 sq ft | up to 2,000 sq ft |
| Speed settings | 2 | — |
| Drive type | direct_drive | direct_drive |
| Insulated damper | No | No |
| Remote or app control | No | No |
| Sound level note | — | — |
| Motor warranty years | 10 | — |

## Key differences

- Airflow (CFM): Air Vent 24 in. Direct Drive Whole House Fan (54301) 3,500 CFM vs Master Flow WHFS24M Direct Drive Whole House Fan 4,500 CFM
- Coverage (sq ft): Air Vent 24 in. Direct Drive Whole House Fan (54301) up to 1,500 sq ft vs Master Flow WHFS24M Direct Drive Whole House Fan up to 2,000 sq ft

## Sources

- Air Vent 24 in. Direct Drive Whole House Fan (54301): https://sutherlands.com/products/item/4519047/air-vent-24-inch-whole-house-fan-direct-drive-with-shutter (sutherlands.com, verified 2026-08-16)
- Master Flow WHFS24M Direct Drive Whole House Fan: https://www.thelumberyard.com/FAN-WHOLE-HOUSE-24IN-4500CFM-p/6928790.htm (thelumberyard.com, verified 2026-08-16)

Canonical: https://frontdeskreview.com/gear/whole-house-fans/air-vent-54301-vs-master-flow-whfs24m/
Cite: Per The Front Desk Review, Air Vent 24 in. Direct Drive Whole House Fan (54301) (not published) vs Master Flow WHFS24M Direct Drive Whole House Fan ($379.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/whole-house-fans/air-vent-54301-vs-master-flow-whfs24m/
License: CC BY 4.0.