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 3.7. The Centric Air 2.7 leads on efficiency. The QuietCool Energy Saver ES-3100 RF costs $50 less ($1,199 vs $1,249).
QuietCool Energy Saver ES-3100 RF
The efficient version of QuietCool’s ducted fan for a small home or one zone, with a very low-power low speed for running all night.
Amazon $1,199$1,199
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 8.4 CFM per watt).
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 | QuietCool Energy Saver ES-3100 RF |
|---|---|---|
| Overall rating | 3.9/5 | 3.7/5 |
| Value 30% | 47 $461.06 per 1,000 CFM ($1,249, 2,709 CFM) | 42 $499.58 per 1,000 CFM ($1,199, 2,400 CFM) |
| Efficiency 20% | 73 9.4 CFM per watt | 57 8.4 CFM per watt |
| Noise 15% | 70 49 dBA at high speed | 75 47.4 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 | QuietCool Energy Saver ES-3100 RF | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 2,709 CFM | 2,400 CFM |
| Power, high speed | 288 W | 285 W |
| Efficiency | 9.4 CFM/W | 8.4 CFM/W |
| Speeds | 2 | 2 |
| Noise | 49 dBA | 47.4 dBA |
| Install | ||
| Mount | Ducted | Ducted |
| Damper | R-5 insulated | R-5 insulated |
| Ceiling opening | 14 x 24 in | 14.25 x 22.25 in |
| Attic vent area needed | 3.2 sq ft | 4.1 sq ft |
| Voltage | 120 V | 120 V |
| Remote or wall control | Yes | Yes |
| App or remote monitoring | - | No |
| Warranty | ||
| Warranty | 15 years | 10 years |