QuietCool Energy Saver ES-5400 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 $1,499$1,499
The QuietCool Energy Saver ES-5400 RF is the better whole house fan overall, rated 3.8 to 3.7. The QuietCool Energy Saver ES-5400 RF leads on efficiency. The QuietCool Classic CL-4700 RF wins on value. The QuietCool Classic CL-4700 RF costs $390 less ($1,109 vs $1,499).
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
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-5400 RF for efficiency (7.7 CFM per watt vs 5.9 CFM per watt).
- Choose the QuietCool Classic CL-4700 RF for value ($343.34 per 1,000 CFM ($1,109, 3,230 CFM) vs $393.44 per 1,000 CFM ($1,499, 3,810 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-5400 RF | QuietCool Classic CL-4700 RF |
|---|---|---|
| Overall rating | 3.8/5 | 3.7/5 |
| Value 30% | 59 $393.44 per 1,000 CFM ($1,499, 3,810 CFM) | 68 $343.34 per 1,000 CFM ($1,109, 3,230 CFM) |
| Efficiency 20% | 45 7.7 CFM per watt | 15 5.9 CFM per watt |
| Noise 15% | 64 50.7 dBA at high speed | 69 49.4 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-5400 RF | QuietCool Classic CL-4700 RF | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 3,810 CFM | 3,230 CFM |
| Power, high speed | 497 W | 551 W |
| Efficiency | 7.7 CFM/W | 5.9 CFM/W |
| Speeds | 2 | 2 |
| Noise | 50.7 dBA | 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 | 6.7 sq ft | 5.9 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 |