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Old 12-09-19, 11:55 PM   #38
MN Renovator
Less usage=Cheaper bills
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Originally Posted by Bicycle Bob View Post
Before I ask for prices, I want to have a size in mind, and my current furnace has no indication of BTU output by the numbers. Is there a decent formula for estimating that from the bills on the cold months? On the very worst days, it runs half the time.
Model number? How many burners? Is it a natural gas furnace? Is the exhaust vented using metal or plastic pipe?
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