NOVELTY - The system has a compressed hydrogen cylinder (25) containing hydrogen, placed at the upper portion of the system housing (77) with an access door (1). A fuel cell is supported on a support (57) at the bottom of a hole within which lower portion of the housing rests. The fuel cell is displaced between a lowered position when the fuel cell rests on the support and raised position for accessing the fuel cell from outside the housing through opening of door by a displacement device.    USE - Fuel cell system.    ADVANTAGE - Avoids freezing of moisture within the fuel cell during start up of the fuel cell system by passive heat exchange between ground and walls of coolant reservoir through the support for maintaining interior temperature of coolant reservoir above freezing point of water. Removes excess heat from the fuel cell stack below freezing condition by the cooling circuit so that the fuel cell system is protected from extreme warm conditions. Helps the fuel cell stack to achieve more optimal operation temperature by the hydrogen and air flow through hydrogen conduit and air intake to the fuel cells stack through respective heat exchangers. Prevents unauthorized access to the interior of the housing by locking access door of the system housing. Eliminates the need for fencing requirements or other unauthorized access when the housing materials and construction are sufficiently resistant to tempering which results in reduced cost of installing of fuel system. Reasonable cost of the fuel cell system can be achieved by using aluminum or steel housing structure and by reducing footprint of the fuel cell system.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) method of installing fuel cell system; and    (2) method of maintaining installed fuel cell system.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of the fuel cell system.    Access door (1)    Air intake (9)    Hydrogen conduit (22)    Compressed hydrogen cylinder (25)    Support (57)    Housing (77)