[RFI] What Does Variable Speed Mean?

[Howard Lester]

What Jim is describing as a “variable speed fan,” in the context of RFI production, is one that is continuously variable, not one that has speeds  controlled in discrete steps. See below what I excerpted from his explanation.

Howard N7SO


> Is there a variable speed furnace fan that has a high, medium, and low speed setting?.....
> 
> Yes.....
> 
> See <https://highperformancehvac.com/ecm-blower-motors-2/>
> 
> 
> 73,
> 
> Gary ~ AB9M



>  on behalf of Jim Brown 

>  Think of a
> variable speed motor as being more like a volume control, so its speed
> can be varied over any value from zero to high.