Reply To: Water Heater Closet Door

The Tank Water Heater Closet Door Reply To: Water Heater Closet Door

Larry Weingarten

Hello, The rule of thumb is one square inch of free vent space per 1000 BTUs. Your heater may be 30,000 or 35.000 BTUs. What I just found, looking this up is code wants two vents, each within a foot of the top and bottom of the door. They also want 100 square inches at each… which seems generous to me. You might want to look up “combustion air” under whatever code you use and see what it says. 😎

Yours, Larry

Water Heater Rescue

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