DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > Adding fresh air intake to existing Furnace...




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Old 01-25-2007, 07:38 AM  
harleysilo
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Default Adding fresh air intake to existing Furnace...

the matter....



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Old 01-25-2007, 07:49 AM  
mudmixer
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Are you talking about a furnace or do you also have a gas water heater?

What you do has nothing to do with a return duct. - That is a part of your air handling system. Fresh combustion air supplies are independant of the air handling system.

It is common to duct it directly to a furnace. An alternate is to duct it into a furnaca/utility room that can be isolated from the rest of the home.



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Old 01-25-2007, 12:27 PM  
harleysilo
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air to condition in from outside...

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Old 01-25-2007, 03:52 PM  
glennjanie
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Hey Harley:
The incoming air could come from the attic or through the attic to a down turn in a soffit, to the return air duct and could be a 3" PVC pipe. Just make sure it has some sort of screen on it to keep sparrows, rodents and insects out.
Glenn

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