Centric Air QA-Deluxe 6500
A low-cost ducted fan with an R-5 damper for a typical home, if you accept higher power use than ECM models.
Amazon $1,178 Centric Air $1,149$1,149
The Centric Air QA-Deluxe 6500 rates 3.9 among 3,001 to 5,000 CFM whole house fans; the AirScape Sierra 5300 rates 2.7 among over 5,000 CFM ones. The Centric Air QA-Deluxe 6500 costs $1,140 less ($1,149 vs $2,289).
AirScape Sierra 5300
A premium ducted fan for a large home in a cold or mixed climate, where the motorized R13 doors earn their cost.
HVACQuick $2,289$2,289
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (3,001 to 5,000 CFM and over 5,000 CFM), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Centric Air QA-Deluxe 6500 | AirScape Sierra 5300 |
|---|---|---|
| Overall rating | 3.9/5 | 2.7/5 |
| Value 30% | 89 $256.59 per 1,000 CFM ($1,149, 4,478 CFM) | 55 $414.15 per 1,000 CFM ($2,289, 5,527 CFM) |
| Efficiency 20% | 13 5.8 CFM per watt | 15 5.9 CFM per watt |
| Noise 15% | 63 51 dBA at high speed | 7 68 dBA at high speed |
| Damper 10% | 33 R-5 insulated damper | 87 R-13 insulated damper |
| Warranty 25% | 100 10-year warranty on the motor | 22 3-year warranty on the motor |
Specifications
| Centric Air QA-Deluxe 6500 | AirScape Sierra 5300 | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 4,478 CFM | 5,527 CFM |
| Power, high speed | 771 W | 932 W |
| Efficiency | 5.8 CFM/W | 5.9 CFM/W |
| Speeds | 2 | 10 |
| Noise | 51 dBA | 68 dBA |
| Install | ||
| Mount | Ducted | Ducted |
| Damper | R-5 insulated | R-13 insulated |
| Ceiling opening | 14 x 28 in | 22.5 x 26.5 in |
| Attic vent area needed | 5.5 sq ft | 7.1 sq ft |
| Voltage | 120 V | 120 V |
| Remote or wall control | Yes | Yes |
| Warranty | ||
| Warranty | 10 years | 3 years |