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Burner Air Supply - Negitive Pressure Home

2K views 3 replies 3 participants last post by  bigMikeB 
#1 ·
I have a Rheem 90 high efficiency furnace. I have been told that it creates a negitive pressure in the home when it sucks air out of the home for combustion and then blows it outside via the exhaust. I understand this and can believe what I'm told. Here is the question: should I run an air supply tube from outside to my furnace so that home air pressure is neutral? pros & cons please?
 
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