Al wrote:
On Wed, 06 Dec 2006 22:44:54 -0800, Kate wrote:

My last house had a heat pump. One winter I closed off several vents to
rooms that I do not use, thinking it would warm up the rest of the house
faster, and cheaper. Wrong. It shut down, and a guy came out and fixed
it for $60 by adding a booster. Not exactly sure what that was all
about but it worked for the last eight years I lived in that home. He
also told me that with a heat pump you cannot close off the vents.

Now, in my present home, I have a furnace only. Is it safe to close
vents in several bedrooms that I don't use.

Thaanks.

Kate


You should not close vents in any rooms. It effects the static
pressure of the system and on a gas furnace can cause your system to
overheat and trip on the high limit switch.




http://www.thehvacmedic.com - All the free heating and air answers you want!



If closing the registers in any room is so bad, then why does every
house I've ever lived in have registers that can be fully closed? In
any properly designed and installed system, you'd have to close a hell
of a lot of registers to reduce airflow to the point that the high
limit switch cuts off the furnace.