Yes, a solar water heater typically requires a backup heating system, especially for times when there is insufficient sunlight or during periods of high demand for hot water.
Yes, a solar water heater may require a backup heating system in order to provide hot water during periods of low solar radiation or when the demand for hot water exceeds the system's capacity.
Yes, a solar water heater typically requires a backup heating system to provide hot water during periods of low solar radiation or high demand.
