Yes. It's really amazing. First thing that I did after bought house last summer was to install whole house fan. Due to it we used hvac to cool house for less th

Yes. It's really amazing. First thing that I did after bought house last summer was to install whole house fan. Due to it we used hvac to cool house for less than 36 hours in July-October timeframe (only at days when temperatures were above 40 for few days in a row or when night temperatures didn't went down below 20)