QuietCool Energy Saver ES-6000 RF
The efficient version of QuietCool’s ducted fan for a typical home, with a very low-power low speed for running all night.
Amazon $1,599$1,599
The QuietCool Energy Saver ES-6000 RF is the better whole house fan overall, rated 3.9 to 3.6. The QuietCool Energy Saver ES-6000 RF leads on efficiency. The QuietCool Energy Saver ES-6000 RF costs $50 less ($1,599 vs $1,649).
Centric Air 4.0
An efficient ducted fan with a 15-year motor warranty for a typical home.
Amazon $1,788 Centric Air $1,649$1,649
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 QuietCool Energy Saver ES-6000 RF for efficiency (8.9 CFM per watt vs 6.3 CFM per watt).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 3,001 to 5,000 CFM whole house fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | QuietCool Energy Saver ES-6000 RF | Centric Air 4.0 |
|---|---|---|
| Overall rating | 3.9/5 | 3.6/5 |
| Value 30% | 58 $395.79 per 1,000 CFM ($1,599, 4,040 CFM) | 54 $420.56 per 1,000 CFM ($1,649, 3,921 CFM) |
| Efficiency 20% | 65 8.9 CFM per watt | 22 6.3 CFM per watt |
| Noise 15% | 69 49.3 dBA at high speed | 70 49 dBA at high speed |
| Damper 10% | 33 R-5 insulated damper | 33 R-5 insulated damper |
| Warranty 25% | 100 10-year warranty on the motor | 100 15-year warranty on the motor |
Specifications
| QuietCool Energy Saver ES-6000 RF | Centric Air 4.0 | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 4,040 CFM | 3,921 CFM |
| Power, high speed | 455 W | 623 W |
| Efficiency | 8.9 CFM/W | 6.3 CFM/W |
| Speeds | 2 | 2 |
| Noise | 49.3 dBA | 49 dBA |
| Install | ||
| Mount | Ducted | Ducted |
| Damper | R-5 insulated | R-5 insulated |
| Ceiling opening | 14.25 x 36.25 in | 14 x 28 in |
| Attic vent area needed | 7.4 sq ft | 5.2 sq ft |
| Voltage | 120 V | 120 V |
| Remote or wall control | Yes | Yes |
| App or remote monitoring | No | - |
| Warranty | ||
| Warranty | 10 years | 15 years |