Ceiling – Why is the new Altura 68″ fan so slow moving on high speed

ceiling-fan

This is the 2nd fan that I purchased and it moves slow for such a large fan. Do smaller fans run faster? My 1st fan was a Harbor Breeze Saratoga 60" that had an air flow of 7344 CFMs on high speed. I returned it thinking something was wrong with the interior of the fan. Next, I connected Hampton Bay Altura 68" that has an air flow of 8,435 CFM, and to see it run the same speed as my previous fan is dumbfounding. What is wrong with the speed? It's connected to direct current. I have a dimmer switch in the kitchen but didn't connect the wires to it. Please help!

Best Answer

Your new fan is larger, which means it should be able to move more air at the same speed. As you say, it moves more air (8435 CFM, up from 7344). Who cares how fast the blades turn? If anything it's probably quieter to have a slow, large fan vs a small fan that has to spin a lot faster to move the same amount of air.