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View Full Version : What is the btu's for day and night model 397haw036100

jlmitchell
Feb 18, 2011, 11:36 AM
What is the BTU rating for Day & Night furnace model 397haw036100?
T-Top
Feb 18, 2011, 06:50 PM
Blower 3 ton heating 100,000 BTU. 397 model, what around 20 years old?