# QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) vs Master Flow WHFS24M Direct Drive Whole House Fan: specs and price compared

A sourced, side-by-side comparison of the QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) (QuietCool) and Master Flow WHFS24M Direct Drive Whole House Fan (Master Flow) among whole house fans. Master Flow WHFS24M Direct Drive Whole House Fan is the cheaper of the two at $379.99.

## Side by side

| Spec | QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) | Master Flow WHFS24M Direct Drive Whole House Fan |
| --- | --- | --- |
| US price | $1109 | $379.99 |
| Brand | QuietCool | Master Flow |
| Airflow (CFM) | 4,415 / 3,402 CFM (high/low) | 4,500 CFM |
| Coverage (sq ft) | up to 2,208 sq ft | up to 2,000 sq ft |
| Speed settings | 2 | — |
| Drive type | ducted | direct_drive |
| Insulated damper | Yes | No |
| Remote or app control | Yes | No |
| Sound level note | ~54 dBA on high; acoustical duct + R5 damper box reduce noise/vibration | — |
| Motor warranty years | 10 | — |

## Key differences

- Airflow (CFM): QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) 4,415 / 3,402 CFM (high/low) vs Master Flow WHFS24M Direct Drive Whole House Fan 4,500 CFM
- Coverage (sq ft): QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) up to 2,208 sq ft vs Master Flow WHFS24M Direct Drive Whole House Fan up to 2,000 sq ft
- Drive type: QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) ducted vs Master Flow WHFS24M Direct Drive Whole House Fan direct_drive
- Insulated damper: QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) Yes vs Master Flow WHFS24M Direct Drive Whole House Fan No
- Remote or app control: QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) Yes vs Master Flow WHFS24M Direct Drive Whole House Fan No

## Sources

- QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF): https://www.lowes.com/pd/QuietCool-QuietCool-QC-CL-4700-RF-Classic-Advanced-Whole-House-Fan-with-Wireless-Control-Up-to-4415-CFM-Two-Speed-Covers-up-to-2208-SQFT-10-Year-Warranty-Removable-Grille-R5-Insulated-Dampers-20ft-Power-Cord/5016126751 (lowes.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/quietcool-cl-4700-vs-master-flow-whfs24m/
Cite: Per The Front Desk Review, QuietCool Classic Advanced Whole House Fan (QC CL-4700 RF) ($1109) vs Master Flow WHFS24M Direct Drive Whole House Fan ($379.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/whole-house-fans/quietcool-cl-4700-vs-master-flow-whfs24m/
License: CC BY 4.0.