I am considering entering the business of designing and installing groundsource heatpumps in the future, but I'd like to hear of some experiences other people have had starting up in this business. I'm currently living in CT, but start-up experiences from any part of the country would be good to hear about. What were your biggest difficulties? How would you do it over if you could? Is the market for these systems increasing as much as you would expect it to be by now? Are people skeptical about the technology? Are all your customers happy with the results?