1960’s home. The gas fired water heater (1985 install) and newer furnance install (2005) are in the same hall closet with not exterior combustion air supply.
- Is the clearance to the wall adequate? Less then one inch in this case and what constitutes a “protected wall”? Drywall?
- Would you recommend relocation for the gas fired water heater or adding outside combustion air?
- Should the bypass doors for this location be replaced with a tight closing, weather stripped door?
- Any other recommendation by you HVAC experts is welcome!! Thanks!