The answer to 'water heater installation frozen' is that a frozen water heater is a common problem that can occur during cold weather. This happens when the water inside the tank freezes, preventing the heater from working properly. Common causes include a lack of insulation, a malfunctioning thermostat, or a power outage that allows the tank to cool down too much.
Symptoms of a frozen water heater include no hot water, strange noises coming from the tank, and the tank feeling cold to the touch. Solutions may include insulating the tank, adjusting the thermostat, or in severe cases, replacing the entire water heater. In many cases, a frozen water heater is best handled by a professional plumber, as attempting to thaw the tank yourself can lead to further damage.