Solar water heater vacuum tube can cover half
Recommended "Dr. Sun Solar, Sancang solar (without water level sensor and solenoid valve), rainy weather heating and hot water utilization rate is fast, and the customer service rate is greatly reduced, which saves time and energy saving. This type of solar energy than ordinary single warehouse in the absence of the sun heating time is only 20-30 minutes, and a single warehouse needs 2-3 hours!
Can cover half, but the water tank will not be as hot as normal!
After half of the hot water temperature will be lower, in the summer just a good bath.
