Smith make the water heater and the Whirlpool is brand is only a license. Guess what, look at the Whirlpool web site.The Rheem heater has a WhiteRojers gas control on it and basically has old style thermocuopling with
the unit.... The Rheem heater is very simple and cheap to repair compared to the SMITH or the BRADFORD....
Both of them have the honeywell style control valve and the shitty thermopile which are expensive and a pain in the ass to fool with...
The repair kit for the Bradford cost me about 200 bucks which is really a crime..... The rheem repair kit cost around 100 ....
I suppose that the Smith is the worst of the 3 to choose from because it is basically a whirlpool heater with a crappy air intake on the bottom that just clogs up with lint and you cannot clean it .... which is just exactly
like the whirlpool has...... I am not 100% sure about the thermopile on the Smith unit., it might have its own goosey burner assembly with some kind of weird theromcoupling on it... Seen a few of them over the years... ....
I just know it the Smith is basically junk
If you keep searching there is so much noise who owns who. https://www.water-heater-repair-guide.com/water-heater-manufacturers.html. This mentality is in almost all industries. Close your factories and license the name, or close your factories and have some else do the manufacturing and still sell it as your brand. Look at DeWalt or Milwaukee tools, mostly made in China. Low profit items get shipped from China where as high price and profitable tools may be manufacture here. Look at pump motors, many are manufactured in Mexico but use old common USA names.not much good said about whirlpool either, seems ao smith or whirlpoool arent getting much praise. samething ive heard is whirlpool is ao smith
Im pretty satisfied with tanks other than thier lives arent as long as once were , tankless never appealed that much to me , definately have a few advantages but usualy not enough for my recomendationNone of these "American" manufacturers make a decent tank water heater, why would anyone consider buying a more complicated tankless unit from them?