I've used ProTech several times since purchasing my home approximately a year ago. The services rendered range from small (dryer vent cleaning) to major (natural gas conversion, installation of ductless mini-split heating and cooling systems). In each instance the process and result has been most excellent. They are not the cheapest, but without a doubt, they are the best. Each job has been completed without delays, neatly, within budget, and without fault.
Perhaps as important as anything else, to a person, they have been friendly, enjoyable individuals to work with.
I'd highly recommend them.