can i block off these vents?

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  #1  
Old 11-26-10, 10:44 PM
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can i block off these vents?

there are two vents in my garage (one near the floor the other near the roof) on the same wall. the garage is attached to the house and the vents are near my water heater.

I assume the purpose of the vents is to circulate air because there is a gas water heater and possible car exhaust, but am not sure.

These 2 vents are about 12"*6"

Problem is I would like to block off the vents because they bring in cold air from outside and we use my garage in the winter because we I don't allow smoking in my house.

Do these 2 vents have anything to do with the central air/heat and will blocking them off cause a safety issue due to the water heater?

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Old 11-26-10, 11:00 PM
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Do not block them! With out seeing your set up I'd think that it is make up air for the water heater
 
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