um, I think a well guy is overkill. What you need is a guy with or who can rent a backhoe, who can do plumbing, electrician’s work (mine was licensed in both for decades before he retired) and who can read and follow a manual. I call mine “dad” but you can hire them too.
Also, call Nelson and talk to them. They will tell you how deep to bury the lines in your area. here in northern Indiana it is 4 feet. Back home in WV 3 feet is fine. You just have to be below the deepest frost line.
The installation is not that difficult, it’s just time consuming and expensive. We have three and just love them, they require so little maintenance. They are one of the best improvements we made to the farm. No more breaking ice in the field troughs or hauling 75 gallons of water through 3 feet of snow! Glorious!
Do put each one on its own plug or breaker switch so you can easily plug and unplug it or flip a switch, so that when you go to work on it, you can safely do so in moments while all the other ones stay on. This becomes really important when it is 40 below zero and only one has a problem. If they are all on the same breaker switch, by the time you fix the first one they’ve all got problems
Nelson is a great company, they are VERY helpful and can walk you through what you need. it’s really nice when a company understands customer service like they do! I also needed to have particular parts quickly to make my installation happen when my dad was here, and they scrounged around and found enough for me to get the job done even though they were out of stock when I called. Five stars for going the extra mile.