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Sears 600 Wall Furnace Manual/ HEATING Efficiency
MontyLaurie
Apr 21, 2015, 06:14 AM
Do you know the gas heating efficiency percentage rating
ballengerb1
Apr 21, 2015, 11:33 AM
QWe would need the model number, usually starts with 867XXXXX
ma0641
Apr 21, 2015, 12:25 PM
That heater is at least 40 years old, obsolete for parts. Maybe 60% efficiency back then.