# Master Flow WHFS24M Direct Drive Whole House Fan: specs and price

**Price (US):** $379.99 at thelumberyard.com (Retail price at TheLumberYard for the WHFS24M SKU; prices vary across retailers), as of 2026-08-16. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 6 whole house fans we track it is the cheapest; category median $955.
**Brand:** Master Flow

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $379.99 |
| Brand | Master Flow |
| Airflow (CFM) | 4,500 CFM |
| Coverage (sq ft) | up to 2,000 sq ft |
| Speed settings | — |
| Drive type | direct_drive |
| Insulated damper | No |
| Remote or app control | No |
| Sound level note | — |
| Motor warranty years | — |

## Where it stands

At $380, the Master Flow WHFS24M Direct Drive Whole House Fan is the cheapest of the 6 whole house fans we track, where the median is $812.

## Frequently asked questions

**How much does the Master Flow WHFS24M Direct Drive Whole House Fan cost?**

The Master Flow WHFS24M Direct Drive Whole House Fan has a US price of $379.99 (Retail price at TheLumberYard for the WHFS24M SKU; prices vary across retailers), as of 2026-08-16.

**How does the Master Flow WHFS24M Direct Drive Whole House Fan compare on price?**

At $380, the Master Flow WHFS24M Direct Drive Whole House Fan is the cheapest of the 6 whole house fans we track, where the median is $812.

**What are the Master Flow WHFS24M Direct Drive Whole House Fan's key specs?**

Master Flow WHFS24M Direct Drive Whole House Fan (Master Flow): airflow cfm 4,500 CFM, coverage sqft up to 2,000 sq ft, drive type direct_drive, insulated damper No, remote or app control No. Full sourced spec sheet verified 2026-08-16.

Source: https://www.thelumberyard.com/FAN-WHOLE-HOUSE-24IN-4500CFM-p/6928790.htm (thelumberyard.com, accessed 2026-08-16)
Corroboration: https://www.amazon.com/Master-Flow-Direct-Drive-Shutter/dp/B000KKO7CC (accessed 2026-08-16)
Canonical: https://frontdeskreview.com/product/whole-house-fans/master-flow-whfs24m/
Cite: Per The Front Desk Review, the Master Flow WHFS24M Direct Drive Whole House Fan price of record was $379.99 as of 2026-08-16 — https://frontdeskreview.com/product/whole-house-fans/master-flow-whfs24m/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl