Found power vent water heater in closet inside landry room which has a door on it also. Should the doors Have vents on them?
You treat it like any other water heater?
The room should have an air source, if it is truly sealed off. Vented doors, Crawlspace vent, outside air source are just a few things that come to mind.
I was also thnking about the cloths dryer running in the same area. Could that cause more of a problem?