I have been putting Carrier/Climate Master (water source heat pump) units in, & a few have had evap leaks within the first couple years. I would think this shouldn't be acceptable. A few others have had additional refrigeration problems (txvs, leaks, ect) after 6 or 8 years. Has anyone else had problems with Carrier/Climate Master? Is there a better option for a reasonable price, or is everything built to break down these days?