I have a gas water heater in my garage that i enclosed with bi-fold doors. Since there were bi-fold doors with space on the top and bottom and also in the garage, we didn't install combustion air intakes.
We have now made it a game room with central heat and air flowing inside the garage. Do we have to add combustion air? There is not people there all the time.
Best Answer
Yes, common sense says so.
Maybe people are not there all the time but combustion happens even when no people are there.
Most times these rules are put in place to avoid consequences like poor combustion or combustion gases building up in poorly ventilated spaces.
Provide the combustion air and be safe.