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-   -   best way to shut off forced hot air heat to one room (http://www.diychatroom.com/f17/best-way-shut-off-forced-hot-air-heat-one-room-89495/)

liquidvw 12-13-2010 09:00 AM

best way to shut off forced hot air heat to one room
 
Hi all,

My house has 4 bed rooms. One of them is used about 2 times during the winter heating months. I figured to save some money, I would shut off heat to that room then turn it on when guests arrive. The HVAC system has flexable supply line that goes to the room. There is a damper in the line in the attic. I close the damper and the room stays cool and I keep the door closed.

Now my question. The room also has a return line which has no damper. Is it fine that the my heater is pulling the colder air from that room? Or am I not saving any money as I need to heat that cool air to redistribute to the rest of the house. Would I be better to somehow block off that return line? If so how? Or am I over thinking this.

Thanks for any replies.

richiemoe 12-13-2010 09:13 AM

Duct systems are almost always undersized to say the least. When you close of any run it could do more harm than good to your equipment. So I guess my answer is never close off any runs on a system unless you know for sure your equipment can handle the lesser air flow.

Hixheat1 12-13-2010 10:59 AM

Quote:

Originally Posted by liquidvw
Hi all,

My house has 4 bed rooms. One of them is used about 2 times during the winter heating months. I figured to save some money, I would shut off heat to that room then turn it on when guests arrive. The HVAC system has flexable supply line that goes to the room. There is a damper in the line in the attic. I close the damper and the room stays cool and I keep the door closed.

Now my question. The room also has a return line which has no damper. Is it fine that the my heater is pulling the colder air from that room? Or am I not saving any money as I need to heat that cool air to redistribute to the rest of the house. Would I be better to somehow block off that return line? If so how? Or am I over thinking this.

Thanks for any replies.

Correct also the inside walls don't have insulation never close off vents


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