Checking to see if anyone that has a HYDROTEMP 4 ton unit have had the issues that I have. I have a 4 ton unit. Under warranty I have had 3 compressor, 2 dryers, 2 expansion valves, 4 V star drives, and 3 circuit boards in the unit. I had a leak repaired on the freon line. The direct hot water overamps and does not work. Hydrotemp sent a factory technician down to replace the compressor, dryer and expansion valve the last time it was done under warranty. This was all under warranty. Now the unit is 18 months old the expansion valve has been replaced two more times ( in a two day period). The last time there as some sort of debris found in the valve. Hydrotemp's technical support does offer help over the phone but Hydrotemp has not found a solution to why their unit will not work. When the unit works (temporarily) it does an excellent job but breaks down constantly. Now the unit will now not cool my home properly. I could run the temp donw into the 60s now I can only get it to about 76-77 degrees. Does anyone have any advice on what to do? It is HOT in Texas!