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View Full Version : How do I know what size blower motor tonage is on my furnace?


Lake Bum
Dec 4, 2009, 07:47 PM
Want to install new eguipment and need to know what the tonage is on the old ruud or rheem furnace model # UGAC125A?

KC13
Dec 4, 2009, 07:54 PM
If the heating capacity of the furnace is 125 kbtuh, the blower drive should be at least 4 ton, possibly 5 ton.