Sunday 16 January 2022

Mr.Heater Big Maxx

I am replacing a Mr. Heater, Big Maxx 50,0000 BTU with a like model.
The only difference in the newer model has a 4 inch vent instead of a 3 inch vent.
Can a 3 to 4 inch reducer be used to make the connection with out affecting the efficiency of the new unit?


source https://hvac-talk.com/vbb/threads/2235606-Mr-Heater-Big-Maxx?goto=newpost

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