J.A. Michel wrote:

wrote in message
...

I am finishing my basement. There was previously one duct to supply
the entire unfinished basement with air, which left it a little cool
in the winter. Now I'm creating a mechanical room of only about 150
sqft, a bathroom of 50 sqft, and a main room of about 700 sqft. I
have added two additional supply lines to heat the basement to a
comfortable temperature, and plan to install the requisite two
combustion air grates to "connect" the mechanical and main room. Do I
need to add a return air duct as well? Is it advisable or not for any
particular reason?

I would put returns in the basement. The air circulation will help
maintain an more even temp, and will help dehudimidify the basement
when you're running the AC in the summer.

Any fuel burning heating systems in a basement must be sealed from a
Return Air!
http://www.udarrell.com/proper_cfm_b...syste ms.html -
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How much can your Constructive Wisdom Principled Communicated Ideas be worth to America & the world; Trillions?

If President Bush "unjustifiably" bombs the huge number (hundreds) of identified targets in Iran, there could be an oil shortage causing a global economic catastrophe. Could your effective communications stop this tragedy from happening? How many LIVES & TRILLIONS of Dollars would that save & be worth?


There's nothing more unjust or terrorizing than modern warfare & it is totally self-defeating. He now has 30,000-lb 15-ton Depleted Uranium (DU) Bunker Busting bombs, the DU has a life of 4.5 billion deadly years and causes cancer & chromsome damage resulting in horrid unbelievable genocidal birth deformities.

Iran is NO immediate threat & could be a friend of America; leave Iran alone! NO economic sanctions either! Military actions & economic sanctions are fundamentally self-defeatng & extremely costly in every human dimension.

Reality Is Not An Easy Thing To Be Confronted With, or to ACCEPT.