How to control the fresh air coming into the boiler room.
We have installed a new boiler in our mountain home that does NOT use outside air for combustion. Our heater contractor tells us that to meet code we must drop a 6" pipe into the boiler room that is open to the outside (no damper). We are told that there are no damper kits that are made to control the flow of air so the pipe would be wide open to the outside all of the time. Our home is at 8500~ above sea level and we are very concerned that there will be a huge amount of cold air pouring into our home during the winter with just a open pipe to the outside and no damper. We need help. There has got to be a better way to get the needed fresh air into the boiler room and still control the flow of bitterly cold air. Help
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