TRUEZONE Replacement Actuator for Normally Open Dampers

I was a bit hesitant to buy a damper motor (actuator) and replace it myself. I've always called a plumber and paid hundreds of dollars for them to work their magic to make my central air "work" again. But this time, I took matters into my own hands and found out just how simple it is to replace a damper motor. There were 2 wires (one hot, one ground) and two bolts to tighten with included allen wrench. The connectors were simple - press the button, slip the wire in, let go of the button. Repeat for the other wire. Slide motor into place, tighten bolt. Turn power back on to the control unit. DONE. I saved HUNDREDS of dollars just by doing this by myself. My wife thinks I'm a stud - and our central air is cooling properly again. Best purchase in years!!!

I'm an HVAC contractor. Honeywell zoning products have generally been good over the years but their zone damper operators are not reliable. The old style operators (before this new M847D-zone design) were failing often, due to drive gear and shaft bearing wear. The internal drive parts wear and gain a side play movement. Once this happens, the internal gears overlap and jam at times. We we're at first happy that Honeywell came out with this newer M847D-Zone operator design....but....after these first few years of operation, we're seeing the same problem. The shaft bearing coming out of the motor wears with side play and the internal motor drive gears start to jam. I hate telling this to our customers. It's another problem product we'll have to live with and it's not likely that Honeywell do anything more than what the printed warranty stats. I don't know at this point, what the warranty is for this damper operator when it is used as a replacement part.