Replacing A Blower Motor In An Old Gas Furnace
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- เผยแพร่เมื่อ 2 ส.ค. 2024
- In this video, I replace the blower motor in our 45-year-old gas furnace. It's about time for this furnace to go, but it's still working very well.
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This 45-year-old gas furnace is still running great, but the blower motor finally died. Hope this furnace can hold up for at least a couple more years.
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The soldering is super well done. I'd wire nut and run!
Lol. Thanks.
Nice fix. Easier than I thought it would be. Hope you feel better every day.
Yes, it wasn't too difficult. I'm surprised the furnace is still running so well, but we'll probably try to get only one more winter out of it. Thanks for the kind words.👍
Terrific little job you did there. Very neat.
Thank you!
Thanks for watching!
You look like you’ve been through the wars! Hope you feel better each day and are back to normal soon
Lol. Thanks.
We live in Seattle too and changed a similar-vintage furnace for a heat pump. Don’t regret it at all but wish I’d known before that (a) old craftsman houses don’t have much insulation and (b) Knob-and-Tube electric won’t suffice.
The heat pump struggles a bit on super-cold days because you cannot simply throw more hydrocarbons at it. The AC during summer is a total boon tho….last summer our house was ~15 deg cooler than next door.
Long story short, if you are replacing your furnace… consider heat pump but do plenty homework first.
Interesting. I'll have to check that out. Thanks
True confidence: he completely reinstalls the blower and closes up the furnace before testing whether it will run when he turns it on.
😀 I was certain of the issue, since I'd been messing with the furnace for a couple weeks. It would have been best to show a test, though.
You can try oiling the motor to stop the squeaking
Yeah, the motor was done and barely moved.
Is this safe to connect the ground to an impromptu hole drilled in the motor housing? Do we know for sure it's grounded well externally? I wouldn't want to get electrocuted later on when touching parts of the furnace.
Fair question. Furnace blower motors of this type that I've seen are typically grounded to the housing. Testing with a multimeter to confirm is probably not a bad idea. I've seen 5 ohms or less as ideal resistance. I'm at 4.0 ohms: bates-electric.com/how-to-test-for-ground-with-multimeter/
how do you find the part replacement
I briefly discussed finding the part at the 6:36 mark. Google searches help with cross-referencing for alternatives.
he didn't show what wire go where,,,is there a pacific color? how do you know what speed go where?
The wiring will depend on your furnace motor. I just matched the replacement motor's wiring to the original based on what was specified @ 7:07.