# QuietCool Trident Pro 5.5 Whole House Fan (QC TRI PRO-5.5): specs and price

**Price (US):** Not published (No published consumer MSRP found; sold via HVAC distributors. A dealer-installed price of $2,380-$2,495 exists for the newer 5.5X ECM variant, but that bundles labor and isn't a comparable unit MSRP), as of 2026-08-16.
**Brand:** QuietCool
**Deskmark:** Gold Deskmark — pay-blind category standing 95/100, #2 of 10 in class (independent, computed from sourced data, never for sale).

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | Not published |
| Brand | QuietCool |
| Airflow (CFM) | 5,614 / 3,350 CFM (high/low) |
| Coverage (sq ft) | up to 2,800 sq ft |
| Speed settings | 2 |
| Drive type | ducted |
| Insulated damper | Yes |
| Remote or app control | No |
| Sound level note | 51 dBA high / 48 dBA low |
| Motor warranty years | 15 |

## Where it stands

On the spec sheet, its speed settings of 2 is the highest of the 10, and its motor warranty years of 15 is the highest of the 9.

## Frequently asked questions

**How much does the QuietCool Trident Pro 5.5 Whole House Fan (QC TRI PRO-5.5) cost?**

The QuietCool Trident Pro 5.5 Whole House Fan (QC TRI PRO-5.5) has no published US price as of 2026-08-16.

**What are the QuietCool Trident Pro 5.5 Whole House Fan (QC TRI PRO-5.5)'s key specs?**

QuietCool Trident Pro 5.5 Whole House Fan (QC TRI PRO-5.5) (QuietCool): airflow cfm 5,614 / 3,350 CFM (high/low), coverage sqft up to 2,800 sq ft, speed settings 2, drive type ducted, insulated damper Yes. Full sourced spec sheet verified 2026-08-16.

Source: https://m.lennoxpros.com/quietcool-tri-pro-55-whole-house-fan/p/Y9268 (m.lennoxpros.com, accessed 2026-08-16)
Canonical: https://frontdeskreview.com/product/whole-house-fans/quietcool-trident-pro-5-5/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl