QuietCool Classic CL-4700 RF
A ducted Classic fan with a 10-year warranty for a typical home. It costs less up front than the Energy Saver but draws more power.
Amazon $1,109$1,109
The QuietCool Classic CL-4700 RF is the better whole house fan overall, rated 3.7 to 3.6. The QuietCool Classic CL-4700 RF leads on value. The QuietCool Energy Saver ES-4700 RF wins on efficiency. The QuietCool Classic CL-4700 RF costs $240 less ($1,109 vs $1,349).
QuietCool Energy Saver ES-4700 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 $1,349$1,349
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 Classic CL-4700 RF for value ($343.34 per 1,000 CFM ($1,109, 3,230 CFM) vs $437.99 per 1,000 CFM ($1,349, 3,080 CFM)).
- Choose the QuietCool Energy Saver ES-4700 RF for efficiency (7.4 CFM per watt vs 5.9 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 Classic CL-4700 RF | QuietCool Energy Saver ES-4700 RF |
|---|---|---|
| Overall rating | 3.7/5 | 3.6/5 |
| Value 30% | 68 $343.34 per 1,000 CFM ($1,109, 3,230 CFM) | 51 $437.99 per 1,000 CFM ($1,349, 3,080 CFM) |
| Efficiency 20% | 15 5.9 CFM per watt | 40 7.4 CFM per watt |
| Noise 15% | 69 49.4 dBA at high speed | 50 noise rating not published (neutral score used) |
| 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 Classic CL-4700 RF | QuietCool Energy Saver ES-4700 RF | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 3,230 CFM | 3,080 CFM |
| Power, high speed | 551 W | 415 W |
| Efficiency | 5.9 CFM/W | 7.4 CFM/W |
| Speeds | 2 | 2 |
| Noise | 49.4 dBA | - |
| Install | ||
| Mount | Ducted | Ducted |
| Damper | R-5 insulated | R-5 insulated |
| Ceiling opening | 14.25 x 30.25 in | 14.25 x 30.25 in |
| Attic vent area needed | 5.9 sq ft | 5.6 sq ft |
| Voltage | 120 V | 120 V |
| Remote or wall control | Yes | Yes |
| App or remote monitoring | No | No |
| Warranty | ||
| Warranty | 10 years | 10 years |