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 and the Centric Air QA-Deluxe 6500 are evenly matched, rated 3.9 and 3.9. The QuietCool Energy Saver ES-6000 RF leads on efficiency. The Centric Air QA-Deluxe 6500 wins on value. The Centric Air QA-Deluxe 6500 costs $450 less ($1,149 vs $1,599).
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
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 5.8 CFM per watt).
- Choose the Centric Air QA-Deluxe 6500 for value ($256.59 per 1,000 CFM ($1,149, 4,478 CFM) vs $395.79 per 1,000 CFM ($1,599, 4,040 CFM)).
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 QA-Deluxe 6500 |
|---|---|---|
| Overall rating | 3.9/5 | 3.9/5 |
| Value 30% | 58 $395.79 per 1,000 CFM ($1,599, 4,040 CFM) | 89 $256.59 per 1,000 CFM ($1,149, 4,478 CFM) |
| Efficiency 20% | 65 8.9 CFM per watt | 13 5.8 CFM per watt |
| Noise 15% | 69 49.3 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 10-year warranty on the motor | 100 10-year warranty on the motor |
Specifications
| QuietCool Energy Saver ES-6000 RF | Centric Air QA-Deluxe 6500 | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 4,040 CFM | 4,478 CFM |
| Power, high speed | 455 W | 771 W |
| Efficiency | 8.9 CFM/W | 5.8 CFM/W |
| Speeds | 2 | 2 |
| Noise | 49.3 dBA | 51 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 | 5.5 sq ft |
| Voltage | 120 V | 120 V |
| Remote or wall control | Yes | Yes |
| App or remote monitoring | No | - |
| Warranty | ||
| Warranty | 10 years | 10 years |