Originally Posted by drewdin
thanks god im handy...
A new inducer motor PC board for my furnace containing a relay & four diodes is $220. For $11 including shipping I got an Omron relay to fix the board, a 20:1 price ratio.
I find out I have to add an RC filter to run the relay but I have junkbox parts that can do this.
People have occasionally gotten Grainger motors for $50 that replaced $400 air handler motors.
BTW, the sides of a full oil tank may bulge out 1/16" more than for an empty tank. This is about the amount of travel for the actuators of some Microswitches so a rigidly mounted switch next to the tank wall may tell you when you're near empty.