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My Dad has a Miller furnace Mod# MMHA-075AAHR-01, Ser# MMH9104-02843. I see that it's a Nordyne unit now. It has a cracked burner chamber so I need to replace it. It's in a in a 1970's single wide, in a tight spot, LOL, which I'm sure is common in mobile homes. What would be the easiest/smallest? replacement unit for us to use. We're in New Jersey and Dad & I have replaced furnaces before and will do it ourselves. Any help would be greatly appreciated. TIA.

Hi,

Get size of space and then you will know what size unit is compatible.


Most are similar in size, so when you have size of space, check locally with dealers to see what is available.


For some exact unit sizes, check with Nordyen and Coleman websites for most common.



Thanks,
Robert