I work for a Heating as well as A/C business, not as a Heating as well as A/C worker however as a stock room guy. I have no heating as well as cooling expertise besides knowing the tech and where it goes. I take Heating as well as A/C component off a car as well as organize it in the stock area. The oil furnaces go in 1 section as well as the a/c systems in another. I learned that a heat pump does both functions as well as is ductless. The heat pump goes with the ductless mini cut devices. I guess that there are many kinds of thermostats as well as they are all set up differently by how they function. I even have Heating as well as A/C tools set up in the stock area by their use. Another area of my job is to load up the Heating as well as A/C component in a company truck. If you call for a modern oil furnace, I find the exact oil furnace that you want in the stock area. I then load up the heating plan in the own truck. The Heating as well as A/C dealer then takes the truck as well as does all the heating set up. I do the heavy lifting as well as thoughtless work. It unquestionably is a wonderful task. It just stinks that all the people assumes I guess how to repair Heating as well as A/C or set up their Heating as well as A/C equipment. I can tell them the type, size as well as cost of the Heating as well as A/C. I can even tell them what temperature control will go best with it.