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junoir 01-20-2013 11:33 AM

Furnace blower speed
where do I find furnace blower speed on a 75.000 80%

HVAC1000 01-20-2013 11:53 AM


Originally Posted by junoir
where do I find furnace blower speed on a 75.000 80%

Need more info like model and serial number and brand. It may have a variable speed blower which is more complicated to change the speed on

how 01-20-2013 11:56 AM

You need to check the motor's designation to confirm which blower motor you have and which speed tap is currently being used.

HVAC1000 01-20-2013 12:13 PM

How many wires come from it,vwhat color are they and where do they connect to the control board?

yuri 01-20-2013 01:04 PM

wiring diagram

diyorpay 01-21-2013 10:15 AM

Wiring diagram often on back of blower door panel. Multiple 'taps' are color coded wires that can be swapped to change speeds. Highest usually for A/C etc.

ben's plumbing 01-21-2013 05:12 PM

alot of blower speeds are found on control board...why do you ask...don't just change speed...will effect tempeture rise of furnace which can damage heat exchanger why do you want to change speeds?????? ben sr

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