We did ours and there was a great amount of discussion etc. about how to put it on the roof.I asked an old rv tech. he looked at me and said."It only weighs 75 lbs"He strapped them on his back and took the up the ladder,swung it around onto his thick jacket,pulled it into place and went inside and finished.I hired 2 young fellows from the local lumber yard and that is how it went.I had the old one disconnected and out of the way.We were done and hooked up in under 1/2 hour.Threw the old one off the roof,onto the truck and done.I had quotations of $2200.00 for a crew of 2 to come 130 miles,$495.00 for a diagnostic call from a dealer 45 miles away,the $1100.00 for install.My wife paid me nothing for a total of 45 mins. and offered the guys each $50.00 for there time.They just laughed and took $20.00 for beer.You can do it yourself,not hard nor is the wiring.Oh and as a bit of information,the unit I bought is $495.00 delivered in the USA,$990.00 in Canada and you pick up.The USA dealers will not sell at the same price to Canadians even with the exchange nor ship over the border.Same old crap,Canadian suppliers and dealers screw us silly up here.
