Hello, In 1990, with my trencher, I installed a ground loop for my house, using 2,000 feet of blue polybutyl ene plastic line, 6 feet deep. I am here in eastern Nebraska, clay loam hills. I then installed a 4 Ton, Command-Air heat pump, with a scroll compressor. That unit didn’t wear out, but I decided it would die when I least expected, so in November of 2021, I replaced it with a Bosch 2-stage Scroll Compressor 4-Ton unit. I also replaced the Grunfus circulator pumps. My problem is that my ground loop is marginal. My old Command-Air unit would kick-out on low water temp (set at 21F) sometimes in January. My Bosch unit kicks-out more often, requiring a breaker reset – very aggravating. My local well driller wants 3K per hole, 200’ deep, for 4 wells, or 12K. That would do the job, abandoning my ground loop. But what would you think of my adding just 1 well, tied on to the end of my existing ground loop? Would you think it best to add it to the water exit or the entrance? Thank you.