Your thermostat gives you a choice–fan on, off, or auto. What’s best? Harold Wilkes says leave it on all the time if your furnace and/or AC has a DC variable speed motor. If not, you can still leave the fan running for extended periods during the day. But why not just leave it on auto? Turns out there is a reason, and Harold explains why in this quick video.
Mechanical Extremes Was Born on a Lunch Break
Have you ever had a flash of insight that shaped the future? Harold Wilkes did, and it had lasting consequences.
June 24, 2020