# Tamarack HV1000 Whole House Fan vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan: specs and price compared

A sourced, side-by-side comparison of the Tamarack HV1000 Whole House Fan (Tamarack) and Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan (Cool Attic) among whole house fans.

## Side by side

| Spec | Tamarack HV1000 Whole House Fan | Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan |
| --- | --- | --- |
| US price | $709 | not published |
| Brand | Tamarack | Cool Attic |
| Airflow (CFM) | 1,000 CFM | 4,600 / 3,200 CFM (high/low) |
| Coverage (sq ft) | under 1,600 sq ft | 1,200-1,800 sq ft |
| Speed settings | 1 | 2 |
| Drive type | direct_drive | direct_drive |
| Insulated damper | Yes | No |
| Remote or app control | No | No |
| Sound level note | — | — |
| Motor warranty years | 3 | 10 |

## Key differences

- Airflow (CFM): Tamarack HV1000 Whole House Fan 1,000 CFM vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan 4,600 / 3,200 CFM (high/low)
- Coverage (sq ft): Tamarack HV1000 Whole House Fan under 1,600 sq ft vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan 1,200-1,800 sq ft
- Speed settings: Tamarack HV1000 Whole House Fan 1 vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan 2
- Insulated damper: Tamarack HV1000 Whole House Fan Yes vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan No
- Motor warranty years: Tamarack HV1000 Whole House Fan 3 vs Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Fan 10

## Sources

- Tamarack HV1000 Whole House Fan: https://www.tamtech.com/product/hv1000-whole-house-fan/ (tamtech.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/tamarack-hv1000-vs-cool-attic-cx24ddwt/
Cite: Per The Front Desk Review, Tamarack HV1000 Whole House Fan ($709) 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/tamarack-hv1000-vs-cool-attic-cx24ddwt/
License: CC BY 4.0.