How large of a unit do we need?

I have been hired to write a book about the heating plus cooling industry, plus I sincerely do not assume why I was hired or anything about heating plus cooling, then out of all the things I have been hired to write books about, this is the first time I am totally clueless! If the pay was not so good, I would have turned down the job plus done something else. But for the pay, I could not say no! So, I have to do a whole ton of research on the unusual kinds of heating plus cooling related technology plus component available! So far, in our research, I have seen things plus l gained about radiant radiant floors, smart temperature control thermostats, ductless mini-cut heating plus cooling systems and things about the seasoned heating plus cooling component love window air conditioning system units, which were what most homes had before central heating plus cooling became available to everyone at an affordable price. I also have been reading about space heaters, in which space gas furnaces are a cheap way to heat your lake apartment and save a whole ton of currency on your weekly plus weekly electric bills. Actually to be tolerable with you, after doing all this research plus learning all about the ins plus outs of the heating plus cooling technology and the new heating plus cooling systems, I almost want to become a certified heating plus cooling worker! But, I actually make a few more bucks writing the books, so I assume I will stick with that for now.

air conditioning unit