Tuesday, 22 September 2020

Can a different condenser fan on a 1075 rpm motor do the job of a 1650 rpm motor/fan

I have support several houses in all aspects, and call professionals when needed.
I like to keep spares on hand and like to standardize.
I have one unit that has a 1650 condenser fan motor, and it just went out.
I have only stocked 1075 rpm fans because that is what all of the other units have.
My understanding of a/c and physics leads me to this question:
Can I purchase a fan blade that has a steeper blade pitch and possible surface area, to move the same amount of air through the condenser at 1075 rpm as the 1650 rpm fan did?

are there calculators or standards that have already figured this swap out?

My understanding of the A/C is that main thing related to the rpm and blades, is the correct amount of airflow moved through the condenser to cool the unit.
I appreciate all well-intentioned feedback... :)


source https://hvac-talk.com/vbb/showthread.php?2222368-Can-a-different-condenser-fan-on-a-1075-rpm-motor-do-the-job-of-a-1650-rpm-motor-fan&goto=newpost

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