You cannot. Buy a new one.
2006-07-16 07:51:46
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answer #1
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answered by Island Queen 6
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Changing the efficiency of an old furnace is impossible. The only way you can address this is to buy a new high efficiency furnace.
2006-07-16 14:47:24
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answer #2
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answered by chuckimagine 4
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If you can not buy a new one, have a professional come and clean it for you. It will increase your efficiency greatly. Also have them check for carbon monoxide.
2006-07-16 15:36:30
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answer #3
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answered by David 3
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Throw it out and get a new one. Probably the cheapest, and therefore, most efficient, method.
2006-07-16 14:51:42
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answer #4
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answered by presidentrichardnixon 3
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If you can get your hands on about $3000, then just get a new one. And make sure your home is well insulated.
2006-07-16 15:01:50
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answer #5
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answered by my brain hurts 5
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Filter change
2006-07-16 14:46:36
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answer #6
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answered by MOGLE 3
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BUY A NEW ONE.
2006-07-16 14:52:03
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answer #7
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answered by petasucks101 5
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Donno
2006-07-16 14:46:53
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answer #8
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answered by Tomekk 2
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