My home A/C indoor A-coil was diagnosed with a refrigerant leak by Pioneer Comfort Systems, they estimated $4,500-6,000 to replace it without a warranty, then they pushed the purchase of a new system with 10 yr warranty for $16-30K!! My brother, who does much of his own A/C repairs told me he ordered an A-coil online for $300 then paint an A/C technician about $300 to install and recharge the system. A salesman from Pioneer Comfort Systems then came to my house to discuss my $ options. He only gave me info on buying a new system, not replacing the leaking A-coil. He gave me the basic information, no details, but said they could install a new system the next day. Because it was the middle of the hot summer with temps in mid-90s, I agreed to a new system. He gave me a total price, including 8 hr. Installation, at $14,900 for an American Standard 4 ton basic system. 3 young technicians showed up the next day and did the installation in 5 hrs 45 min, including lunch break. One of the men weighed about 300 lbs and he bent one of the legs on my aluminum attic access ladder. They did not level the a/c condenser pad from front to back, so I told one of the technicians that I was going to put bricks under the front of the pad and leveled it front to back. One technician was apparently a trainee because the other techs were instructing him on how to do things, and the trainee was the one who brazed the copper pressure lines to the condenser unit, and I was not impressed with his brazing, looked very rough. My existing air handler in the attic was hung from the ceiling rafters, and I expected them to hang the new unit but instead they built a 2x4 frame and mounted it to the floor of the attic, putting the weight of the unit and drain pan on my living room ceiling, which I didn't like, so I called the salesman and asked him why he didn't tell me this, he said they have to do it that way per code. I later looked up the code and it states that if you're replacing a unit with a similar size and weight unit, which this was, that it could be hung from the same rafters as the existing one. The technicians took the batteries out of my wall thermostat and told me it didn't need then, although the thermostat manual says the batteries are a backup in case of power outage. They set the thermostat to 70°, turned it on then they left shortly after, and the room temperature was at 80°. The outside unit is louder than my old unit was and they told me to give it a few days and it should quiet down. A few minutes later I came inside to find the air had shut off, the thermostat was blinking a low battery indicator (because tech had taken batteries out) so I put batteries back in, then the thermostat flashed " compressor delay." I went up into the attic to see if I could see any cause for the stoppage, but all I noticed was a huge blob or clear silicone caulk on the drain pipe connector at the auxiliary drain pan which was blocking half of the pans drain hole. I then called the salesman and asked him to send one of the techs back over to fix the problem. I also asked the salesman for a itemized bill showing cost of equipment and cost of labor, so I could compare it to online prices from other companies, but he said he couldn't do that. In summary, I believe this company overcharged me for materials and labor, and the level of service did not match the excess costs. I believe they take advantage of people who find themselves in need of air conditioning or heating, and they charge excessive costs, then send over their youngest employees/trainees to complete the work. So if you find yourself needing these services, don't give in to a quick- high cost fix, get quotes from multiple contractors to make sure you don't get taken advantage of like I was.