Centric Air 2.7
An efficient ducted fan with a 15-year motor warranty for a small home or one floor.
Amazon $1,249$1,249
The Centric Air 2.7 is the better whole house fan overall, rated 3.9 to 3.6. The Centric Air 2.7 leads on efficiency. The Centric Air QA-Deluxe 3300 wins on value. The Centric Air QA-Deluxe 3300 costs $400 less ($849 vs $1,249).
Centric Air QA-Deluxe 3300
A low-cost ducted fan with an R-5 damper for a small home, if you accept higher power use than ECM models.
Amazon $899 Centric Air $849$849
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.
Which should you buy?
- Choose the Centric Air 2.7 for efficiency (9.4 CFM per watt vs 5.8 CFM per watt).
- Choose the Centric Air QA-Deluxe 3300 for value ($350.10 per 1,000 CFM ($849, 2,425 CFM) vs $461.06 per 1,000 CFM ($1,249, 2,709 CFM)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 3,000 CFM whole house fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | Centric Air 2.7 | Centric Air QA-Deluxe 3300 |
|---|---|---|
| Overall rating | 3.9/5 | 3.6/5 |
| Value 30% | 47 $461.06 per 1,000 CFM ($1,249, 2,709 CFM) | 67 $350.10 per 1,000 CFM ($849, 2,425 CFM) |
| Efficiency 20% | 73 9.4 CFM per watt | 13 5.8 CFM per watt |
| Noise 15% | 70 49 dBA at high speed | 63 51 dBA at high speed |
| Damper 10% | 33 R-5 insulated damper | 33 R-5 insulated damper |
| Warranty 25% | 100 15-year warranty on the motor | 100 10-year warranty on the motor |
Specifications
| Centric Air 2.7 | Centric Air QA-Deluxe 3300 | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 2,709 CFM | 2,425 CFM |
| Power, high speed | 288 W | 417 W |
| Efficiency | 9.4 CFM/W | 5.8 CFM/W |
| Speeds | 2 | 2 |
| Noise | 49 dBA | 51 dBA |
| Install | ||
| Mount | Ducted | Ducted |
| Damper | R-5 insulated | R-5 insulated |
| Ceiling opening | 14 x 24 in | 14 x 20 in |
| Attic vent area needed | 3.2 sq ft | 2.5 sq ft |
| Voltage | 120 V | 120 V |
| Remote or wall control | Yes | Yes |
| Warranty | ||
| Warranty | 15 years | 10 years |