QuietCool Energy Saver ES-7000 RF
The efficient version of QuietCool’s ducted fan for a large or two-story home, with a very low-power low speed for running all night.
Amazon $1,799$1,799
The QuietCool Energy Saver ES-7000 RF is the better whole house fan overall, rated 3.8 to 2.5. The QuietCool Energy Saver ES-7000 RF leads on warranty, noise and efficiency.
AirScape Ventura X9
A ten-speed ducted fan for a large home in a mild climate; the uninsulated door makes it a poor fit where winters are cold.
HVACQuick $1,799$1,799
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-7000 RF for warranty (10-year warranty on the motor vs 3-year warranty on the motor), noise (51.7 dBA at high speed vs 68 dBA at high speed) and efficiency (7.1 CFM per watt vs 5.6 CFM per watt).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 5,000 CFM whole house fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | QuietCool Energy Saver ES-7000 RF | AirScape Ventura X9 |
|---|---|---|
| Overall rating | 3.8/5 | 2.5/5 |
| Value 30% | 67 $347.97 per 1,000 CFM ($1,799, 5,170 CFM) | 68 $345.17 per 1,000 CFM ($1,799, 5,212 CFM) |
| Efficiency 20% | 35 7.1 CFM per watt | 10 5.6 CFM per watt |
| Noise 15% | 61 51.7 dBA at high speed | 7 68 dBA at high speed |
| Damper 10% | 33 R-5 insulated damper | 0 uninsulated louver |
| Warranty 25% | 100 10-year warranty on the motor | 22 3-year warranty on the motor |
Specifications
| QuietCool Energy Saver ES-7000 RF | AirScape Ventura X9 | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 5,170 CFM | 5,212 CFM |
| Power, high speed | 727 W | 925 W |
| Efficiency | 7.1 CFM/W | 5.6 CFM/W |
| Speeds | 2 | 10 |
| Noise | 51.7 dBA | 68 dBA |
| Install | ||
| Mount | Ducted | Ducted |
| Damper | R-5 insulated | Uninsulated |
| Ceiling opening | 14.25 x 36.25 in | 14.5 x 36 in |
| Attic vent area needed | 9.2 sq ft | 7.1 sq ft |
| Voltage | 120 V | 120 V |
| Remote or wall control | Yes | Yes |
| App or remote monitoring | No | - |
| Warranty | ||
| Warranty | 10 years | 3 years |