I remember growing up we had a Master heater and it was bullet proof for many years. When it finally gave up we replaced it with a Ready heater and we used it for almost 20 years little issues. A few years ago we got a new John Deere and we got about 3 good winters out of it than it would start run for a few minutes than the flame would go out and smoke than trip the reset every time. We took it to Deere they said they fixed it took it home no different. Tried a second shop same thing. My neighbor told me they're made in China,he buys them from Deere new runs them a few years when they start acting up to the dumpster it goes and gets another one. I saw a little 70000 btu at Deere as its enough for our milking room they wanted $400 for it. Saw a Remmington on sale that had a very sneaky resemblance for $250 so we bought it and so far it works great. It says made in China by Pinnicale Solutions (?) and when I googled them they also make Master heater Ready heater and I wouldn't be surprised if they make Deeres as well because they look very similar.