QuietCool Classic CL-7000 RF
A ducted Classic fan with a 10-year warranty for a large or two-story home. It costs less up front than the Energy Saver but draws more power.
Amazon $1,449$1,449
The QuietCool Classic CL-7000 RF is the better whole house fan overall, rated 3.7 to 2.5. The QuietCool Classic CL-7000 RF leads on warranty, noise and value. The AirScape Ventura X9 wins on efficiency. The QuietCool Classic CL-7000 RF costs $350 less ($1,449 vs $1,799).
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 Classic CL-7000 RF for warranty (10-year warranty on the motor vs 3-year warranty on the motor), noise (54.3 dBA at high speed vs 68 dBA at high speed) and value ($273.40 per 1,000 CFM ($1,449, 5,300 CFM) vs $345.17 per 1,000 CFM ($1,799, 5,212 CFM)).
- Choose the AirScape Ventura X9 for efficiency (5.6 CFM per watt vs 4.6 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 Classic CL-7000 RF | AirScape Ventura X9 |
|---|---|---|
| Overall rating | 3.7/5 | 2.5/5 |
| Value 30% | 85 $273.40 per 1,000 CFM ($1,449, 5,300 CFM) | 68 $345.17 per 1,000 CFM ($1,799, 5,212 CFM) |
| Efficiency 20% | 0 4.6 CFM per watt | 10 5.6 CFM per watt |
| Noise 15% | 52 54.3 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 Classic CL-7000 RF | AirScape Ventura X9 | |
|---|---|---|
| Airflow | ||
| Airflow, high speed | 5,300 CFM | 5,212 CFM |
| Power, high speed | 1,147 W | 925 W |
| Efficiency | 4.6 CFM/W | 5.6 CFM/W |
| Speeds | 2 | 10 |
| Noise | 54.3 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 |