From: vze8f3tq@verizon.net (v)
Newsgroups: misc.consumers.house
Subject: Re: natural gas heater in wall vs. floor
Date: Mon, 17 Jan 2005 20:47:00 GMT

On Sun, 16 Jan 2005 18:02:43 GMT, someone wrote:


>Is there a numeric rating system that ranks natural gas wall, floor, and 
>forced air heating systems in terms of energy efficiency?
>
Sure, natural gas furnaces are rated by percentage efficiency.  That's
the percentage of the available btu's in the fuel, that are captured
as useable heat into the air being heated.

However, any losses in ducting or delivery to just the right spot in
your home, are outside of this rating.  The rating is just you burn so
much gas, you get so many btu's.  Where you put those byu's is not
part of the rating.


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