Originally Posted by Wally

I never understood that reasoning either.......i had a furnace blower go out in the middle of winter about 3yrs ago. Call the number on the furnace (it was there when we bought the house) and the dude comes out and gives me a price of something stupid like $800 to replace the motor. It had to be a "Carrier" item, nothing else fits he says....my red flags go up when i hear things like that cause he knows we are in a bind. I tell him ill think about it and give him the $50 service call.
Tell the wife to break out the electric heater and stick it in the basement so heat rises and im taking the day off! I rip that furnace open, get the motor out...look at the frame size and hit the Grainger website....20min later i have the same multi-speed motor with same shaft length and bonus it draws less amps so more efficient! And its only $75!!! Call them up and its not at the store by near my house but they do have it a little bit farther north....hit the highway back home in under an hour. Slap the "Dayton" motor into a carrier furnace and she's been purring ever since.
Mixing parts i believe would automatically absolve the maker cause its easy for them to say "well it wasn't used with our original parts"
If i somehow got a set of Dodge brake calipers to fit on my chevy truck and then had a brake failure who can you sue? No one cause neither was designed to have those parts used together. Im sure Larry the lawyer will try but i doubt anyone will get anywhere with it...