This will vary wildly from place to place around the country. And we don't necessarily charge by the hour for installs. For irrigation repair work we charge $50 service call (just to arrive at their door) and $48 per hour. And surprisingly, I get that rate almost every time I tell people about it. I increased from $35 a year ago thinking people might balk at it. But so far, everyone's been fine with that rate. I did some "research" first with my competition, if you know what I mean, to figure out what others were charging. It seemed that the average was $45 per hour. Some were as high as $90 per hour. Only a few had service call charges. If I am doing an install, I plan to at least make $35 per man hour. Many times we get much more.