A water heater restraint for securing a vertical cylindrical water heater adjacent a wall. The restraint has an elongated strut, which is held horizontally to a wall against which the water heater is to be restrained. A pair of triangular gussets may be slid along the elongated strut so that one gusset is on each side of the water heater. Strapping is attached to the two gussets and surrounds the water heater and the gussets are secured to the elongated strut. The strut is secured to the wall by channel clamps which may be secured to vertical studs and slide along the elongated strut so that the water heater can be secured independently of the position of the studs.
