Currently using Lennox LF24 200 unit heaters with propane and i like them so I bought a couple of used Armstrong UHPA200AE-3 units but they're on Nat. I could swear these are the same heaters but I'm having a heck of a time finding cross references for them. the point was to be able to stock repair parts that would serve all of them. For right now, though, i really need an LP conversion kit. There's the 20L07 for the LF24 but I don't want to use it on my Armstrongs if they are actually different.
Then there's ADP whose SEP unit heaters look exactly the same as well. They're right down the road from us.
I know a single manufacturer will often make for many brands. Our dishwasher is a KithenAid but there are exact matches in several other brands with identical replacement parts. Hoping I've made a good purchase and someone can guide me on parts.
Any advice would be appreciated.