I've got a RUUD Gas heater that's a combo unit with my AC, everything's outside. My heater's been coming on seemingly at random. I found out that there is (I think) an air intake fan under the front shroud of the unit (top right) that is sticking when I turn the thermostat to get the heater to come on. While the heater is trying to come on, I can poke this fan with a screwdriver and get it to spin a few times and then it sticks. I've WD-40'd the heck outta the bearings and such on this motor to try and keep it unstuck, to no avail. Where might I find a replacement motor assembly for this?