If flooding has been severe, natural gas appliances should not be used until they are inspected by a qualified heating contractor, plumber or appliance repair professional. Note, however, that the cost of restoring some appliances to a safe operating condition may exceed the cost of a new appliance.
Do not attempt to place natural gas appliances back in service. A qualified heating contractor, plumber or appliance repair representative will check, clean, repair and pressure test all gas pipes, which may have been clogged with mud or debris.
Damage may also occur to switches, controls, thermostats, furnace heat exchangers, burner and pilot parts and result in rusting metals parts. A qualified heating contractor, plumber or appliance repair representative must perform any reconditioning or repairs to natural gas appliances.