A heater in the floor seems like it would just naturally be more
efficient than one in the wall. Considering only the heating
efficiency, is there any reason to put the heater in the wall?

Is there a numeric rating system that ranks natural gas wall, floor, and
forced air heating systems in terms of energy efficiency?

Thank you for any info,
George

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.


Reply to NG only - this e.mail address goes to a kill file.

(v) 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.

Thanks for the reply.

OK, I was was looking for a "general principle of home heating". So
skip the forced air furnaces.

Is there a generalization possible about the relative efficiency of wall
and floor natural gas heaters? Has anyone published such comparisons on
the web?

Thanks