About 10 years ago, my builder hired this outfit to install my ac/heating units. I wanted splits and chose the LG art cools. The techs had trouble installing until I gave them the LG support number-now, being older, I would like help cleaning the units-there are videos online and I used to do it myself on a ladder..so, they will not help saying they discouraged me from getting the units..can't they watch a short video? disappointed. read more