Simply put as long as there is enough combustion air provided tankless water heaters can be installed in any area of your home from a utility room to a garage to yes even an old dusty attic.
Instantaeous water heater in attic.
As with all gas water heater installations it is very important to have sufficient combustion and dilution air to insure proper drafting of the exhaust products and safe water heater operation.
This is far less expensive than your water heater leaking and causing thousands of dollars worth of water damage.
If the builder has already installed your water heater in the attic you can get it moved to another location in the house or into the garage.
The water will flood rooms in the lower level and do the damage.
N some areas of the country water heaters both gas and electric are installed in attic spaces.
During the winter time a water heater and piping in the attic space should be insulated to protect against freezing temperatures.
A water heater in the attic saves square footage tank type water heaters are big hulking cylinders filled with anywhere from forty to seventy gallons of hot water.
Another option is to choose a tankless water heaterto be installed in your attic.
Another reason why installing a gas water heater in the attic is not a good idea is if the tank or any connection leaks.
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.
Also the international residential code irc requires that a drain pan be installed where leakage of the tanks or connections will cause damage.