I need help finding the 3/4 hp furnace blower motor that will fit as an upgrade to the 1/2 hp motor model 0131F00022SP. I have upgraded my ac from a 3 ton to a 4 ton and am wanting to push more air. Any help would be great.
Increasing the blower hp does not yield significantly higher speed, the motor is sized for the blower wheel and rpm is limited under 1200. Normal blower motors are rated at 1075 rpm and up-sizing may yield 1100 or so.
ecm motors are an exception.
Only a ecm motor retrofit can get your more air.
Testing needs to be done to see if your furnace is moving enough air for a 4 ton on your duct system. Full model number to get cfm charts and static pressure testing required.
1/2hp blower is usually used in a 4 ton drive furnace but not always.
There's another method but the tool is very expensive - a basic manometer and static pressure tips you can get under $100.
Thank you for that information. Could you formulate an opinion as to what the installing tech might have meant by "upgrading the fan in there furnace will give you more str flow"? If possible I am wanting to do it myself.
Is there a problem your trying to solve or did the installer just tell you that a bigger blower is needed?
Some things you’ve said about the installer are very concerning regarding the performance of the system.
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