As outside temperatures increase the need for proper combustion air and attic ventilation becomes even more critical.
Gas hot water heater in attic.
Leaks from a water heater can be major depending on where the leak is coming from damage can be to attic flooring insulation drywall and even flooring if it leaks a long time a 50 gallon water heater will overflow the pan and then some if it bursts or the bottom rusts out mold can form from the moisture in your attic.
Remember the water heater must fit through the hatch to permit future change outs.
In addition to all the regular code requirements for a water heater when the water heater is installed in an attic you must first have an attic access hatch that is a minimum of 24 x36 and even more for larger water heaters.
N some areas of the country water heaters both gas and electric are installed in attic spaces.
Giant tanks of water happen to take up a lot of square footage and primarily for that reason many builders have opted to place water heaters in the attic of new homes.
Gas water heater the attic space should be appropriately ventilated especially during the summer as the outside temperature and humidity could increase to high values so the attic temperature will reach critical temperatures which will affect the correct working condition of the gas water heater.