I had a new 4 ton Goodman heat pump installed around 18 months ago. Since, then I have the installer back 4 times. Twice for leaks, once to replace a broken reversing value and the last time to see why my systems will not reduce humidity.
I am beginning to feel like a thorn in is side. The first three times, not my fault, obviously I have no way to control leaks or broken reversing value. I still believe my system was leaking the whole time at the reversing value and it finally broke. I am confident it came from the factory this way or was either damage during install.
What lead me to install the new 4 ton Goodman was a bad coil in my Trane unit. I purchased the home as a foreclosure and the system worked well for a little over year. Then the coil busted and I had the outside unit installed only. I discussed this at lengthy with my current installer. I had gotten three estimates and they were all close and he was the only one that brought to my attention that my current air handler did not need to be replaced.
The old unit was a 4 ton 10 sear unit, with a 5 ton air handler unit inside. I had a 14 sear Goodman installed and the installer told me it should work very nice and make an efficient system due to the fact a large A Coil and a variable blower on the Trane Air handler.
Over all it seems to work OK, but my home is more humid than before. The installer came out and checked the temp drop and said it was good 16 degrees. That was about it, other than checking my filters and cleaning the A Coil. I agreed to pay him, due to the fact he seemed to feel everything was working. I am fine with that as long as he is right. I asked him to come out for no reason and used his time and resources, so I am Ok compensate him according.
My brother came over for the Fourth of July and we were out back watching the kids jump on the trampoline. He noticed that my line was not sweating leaving my outside unit. We discussed this at length and he felt like it should be sweating with the humidity in NC in July. We went inside and checked to see if the air handler lines were sweating. While removing the air handler panel the line dropped in temp and began sweating in less than a minute. Once the panel was replaced on the air handler the line slowly became warmer and stopped sweating. The air handler is in my basement; don't know if that matters, I cool the basement but not the room the air handler is in. But it is not airtight to say the least and normally my home is at least 5 degrees cooler in the basement during the summer time.
My brother felt like it was not getting airflow. He is an auto-mechanic not an HVAC tech, so I would like to a second opinion before embarrassing myself to call the installer back for a fifth time.
Thanks in advance on how to handle this. I hate to pay another $ and look like a nut.