Hi..this is the most comprehensive site I have found on the Apollo system. THANKS to all the experts! I am in a similar boat as another poster. I have an ~1800 sq ft two story house on a slab with one unit. HVAC tech came by today stating that my motor was locked up and needed to be replaced and a new contactor? (something he said you change when you change the motor that started with a C). This will cost me ~ $700 installed. My unit has been running since 1997 with very few problems in Durham, NC. Two years ago, I replaced the gas valve on the Water heater (65,000 BTU) and last year had to replace the thermocouple and "click switches" that lead to the retro fitted power vent. Also, the tech found a "hard start" on the condenser today which I am not sure how it got there...maybe from previous owners. So now I am wondering... 1)Is apollo really out of business as mentioned above? 2) with a unit as old as mine, does it make sense to just replace the motor...and the other C part? 3) Is the motor the thing that limits the lifetime of the Apollo Systems or something else in your experience...ie, if I replace the motor am I buying more time? 4) Since I am on a slab-I can't do Gas pack. I have only " 5 wires" in my two story house therefore may not easily be able to get a heat pump without rezoning at a cost of $ 3,000 additional to new unit-is it best to try to stick with hydroheat or pay for modification for heatpump? 5) Am I overloooking another alternative? Phew... Thanks for reading and thanks in advance for any responses. Anna