# CentricAir 3.4 vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan: specs and price compared

A sourced, side-by-side comparison of the CentricAir 3.4 (CentricAir) and Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan (Cool Attic) among whole house fans.

## Side by side

| Spec | CentricAir 3.4 | Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan |
| --- | --- | --- |
| US price | $1449 | not published |
| Brand | CentricAir | Cool Attic |
| Airflow (CFM) | 3,242 / 1,409 CFM (high/low, CA Title 24 / HVI-916 rated) | 4,600 / 3,200 CFM (high/low) |
| Coverage (sq ft) | up to 2,500 sq ft (1-story) / up to 3,400 sq ft (2-story) | 1,200-1,800 sq ft |
| Speed settings | 2 | 2 |
| Drive type | ducted | direct_drive |
| Insulated damper | Yes | No |
| Remote or app control | Yes | No |
| Sound level note | 49 dBA high / 47 dBA low | — |
| Motor warranty years | 15 | 10 |

## Key differences

- Airflow (CFM): CentricAir 3.4 3,242 / 1,409 CFM (high/low, CA Title 24 / HVI-916 rated) vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan 4,600 / 3,200 CFM (high/low)
- Coverage (sq ft): CentricAir 3.4 up to 2,500 sq ft (1-story) / up to 3,400 sq ft (2-story) vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan 1,200-1,800 sq ft
- Drive type: CentricAir 3.4 ducted vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan direct_drive
- Insulated damper: CentricAir 3.4 Yes vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan No
- Remote or app control: CentricAir 3.4 Yes vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan No
- Motor warranty years: CentricAir 3.4 15 vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan 10

## Sources

- CentricAir 3.4: https://www.centricair.com/whole-house-fan-products-and-prices/centricair-3-4/ (centricair.com, verified 2026-08-16)
- Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan: https://www.amazon.com/Cool-Attic-CX24DDWT-2-Speed-Shutter/dp/B001AH5BAQ (amazon.com, verified 2026-08-16)

Canonical: https://frontdeskreview.com/gear/whole-house-fans/centricair-3-4-vs-cool-attic-cx24ddwt/
Cite: Per The Front Desk Review, CentricAir 3.4 ($1449) vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/whole-house-fans/centricair-3-4-vs-cool-attic-cx24ddwt/
License: CC BY 4.0.