We built a new house in 1995 and had a climatemaster closed loop geothermal heat pump installed. Our installer indicated that the systems are trouble free and were well worth the initial money spent and would pay for itself in lower energy costs. In 2008 the air coil(same as evaporator coil, right?) was froze up because of low freon. Our installer discovers that the air coil has freon leaks. He convinces us that the repair cost would be quite high and that we may be better off installing a whole new more efficient unit. So in March 2008 we have installed a new Climatemaster Genesis GSV042 unit. In Jan 2012 I feel like the heat pump is running more than it used too. I check the discharge air temp and it is about 8 deg less than it used to be. Now I understand that there is a lot more parameters that need to be considered but I used this as an indicator that I need to get our installer out to get a good check done. Our installer does a complete check and has to add freon because of a freon leak in the air coil. In LESS THAN 4 years the air coil is leaking. Our installer is very reputable. He has told me numerous times that Climatmasters are trouble free and he has had one installed in his office for 25 years and never touched it. But......I am totally disgusted at this point and wish we would went with a conventional heating and cooling system. Is this typical of Climatemasters? Have they had known manufacturing defect issues? Now I am afraid that I will be responsible for a bunch of repair labor costs and who knows what other expense. When it does get fixed I have a repaired system thats been 'opened' up and not the nice clean system that was supposed to last 25 yrs. Was I sold a bad product when I was sold a Climatemaster???