Don't know where to begin. This was originally installed in May 2009. Since then, they have been here 10+ times. The a/c worked well during the summer. But in October when it started getting colder here in CT, I realized I had no heat. Apparently, there were several parts not installed for one reason or another. The electric boxes with red/green lights on them on the side of the unit that indicate the unit is calling for heat/cool were not installed initially...a pump was added to the pipes on the outside of the air handler to help circulate the water? Then a day later, there was flood in my basement (family room)due to a pipe leaking above the pump...allegedly due to the expanding and contracting or whatever. They paid to have the carpet cleaned and treated to prevent mold. That's when Sears first irked me...another long story. But I insisted that all electrical components that were exposed to the water (the spewing water was above the unit)...I paid for new--I wanted new. Not water-logged. Since then, they have changed the pump to another with a little more oomph in an effort to get the heat blowing better and bumped up the fan speed on 11/27. Now, all of a sudden, my hot water only gets to 100 degrees at the tap although hot water heater is set at 140. The heat is also inconsistent in the temp it blows. Assume that's secondary to the low water temp... For every 15 minute cycle, only 5 minutes is actually warm air blowing... The sub contractor has been very willing to persist in (and humbled by)getting this working as it should. I got Sears to extend my warranty an additional year beyond the one that comes with the unit to 11/27 (the day I thought we were finally done)...to 11/27/2011. However, as of yesterday, we're still trying to resolve all the issues. I have a certificate of insurance from the installer....I just don't know if the problem is in the installation or the unit itself at this point. He's going to have another guy come and take a look at it.....and the saga continues...[:-weepn]