Bought a Generac whole home generator from Lowe's and Lowe's had mainline as the installers. My generator developed a problem the end of July. Michael came out 8/3/15, said I need a part, which would be in within a week and a half. After many calls, they showed up 1 month later. They left, the generator did not do the weekly diagnostic. I called back the day after labor day, was told "oh it needs another part, guess we should have told you". I continued to call, Michael wouldn't return my voice mails. They came back in another month (3 months after my first call) and still couldn't fix it. I called Generac and found our they are NOT approved by Generac to work on the generator. Something Lowe's and Mainline should have been honest enough to tell me when I was considering buying it. I got a Generac certified service technician to come out and found out Mainline had damaged the generator when they were poking around in it. They left the generator in pieces, they damaged the muffler and damaged other parts, which the certified technician took 45 minutes to repair. They charged me $7,000 for installation and don't have a clue what they are doing. Generac has contract with Home Depot only. The lowe's sales person would not answer my e-mails. SO for 4 months I was making payments to Lowe's for a broken generator, much of the damage was caused by Mainline. Stay away from them read more