The QuietCool QC CL-5400 Advanced Whole House Fan offers an innovative approach to home cooling and ventilation.Designed for homes up to 2,510 sqft, this fan delivers robust airflow with 5,024 CFM on high and 4,406 CFM on low, ensuring efficient cooling and ventilation. The PSC motor ensures energy efficiency, consuming just 634 Watts on high and 525 Watts on low.Instead of relying solely on traditional air conditioning, which can be costly, the QuietCool fan utilizes cooler outdoor air to cool your home and attic, potentially saving you 50 to 90% on A/C-related electricity costs while fostering a healthier indoor environment.In addition to cooling, this fan enhances indoor air quality by continuously replacing stale indoor air with fresh outdoor air, removing pollutants, allergens, and moisture that can accumulate in your home. When properly sized, the QuietCool can complete an air exchange every 3 to 4 minutes, contributing to a healthier living space.What sets the QC CL-5400 apart is its patented design, featuring an acoustical duct and R5 damper box that minimizes noise and vibration. This ensures ultra-quiet operation, allowing you to enjoy peaceful nights without the disturbance of loud fans, all while experiencing the cooling benefits of the QuietCool whole house fan. Color: Blue. Material: Galvanized Steel.