Work well with Hard WaterNon Pressurized Model (Main Tank cannot be lower than solar water heater tank) Maximum Water Hardness: 1000 ppmNo pipe BlockingHigh density compressed PUF Insulation to s..

High Pressure (Main Tank can be below solar heater water tank)Work well with soft water and hard waterMaximum Water Hardness: 400 ppmNo pipe BlockingHigh density compressed PUF Insulation to store hot..

Work well with Hard WaterNon Pressurized Model (Main Tank cannot be lower than solar water heater tank) Maximum Water Hardness: 1000 ppmNo pipe BlockingHigh density compressed PUF Insulation to s..

Work well with Hard WaterNon Pressurized Model (Main Tank cannot be lower than solar water heater tank) Maximum Water Hardness: 1000 ppmNo pipe BlockingHigh density compressed PUF Insulation to s..

High Pressure (Main Tank can be below solar heater water tank)Work well with soft water and hard waterMaximum Water Hardness: 400 ppmNo pipe BlockingHigh density compressed PUF Insulation to store hot..

Work well with Hard WaterNon Pressurized Model (Main Tank cannot be lower than solar water heater tank) Maximum Water Hardness: 1000 ppmNo pipe BlockingHigh density compressed PUF Insulation to s..

Work well with Hard WaterNon Pressurized Model (Main Tank cannot be lower than solar water heater tank) Maximum Water Hardness: 1000 ppmNo pipe BlockingHigh density compressed PUF Insulation to s..

High Pressure (Main Tank can be below solar heater water tank)Work well with soft water and hard waterMaximum Water Hardness: 400 ppmNo pipe BlockingHigh density compressed PUF Insulation to store hot..

Work well with Hard WaterNon Pressurized Model (Main Tank cannot be lower than solar water heater tank) Maximum Water Hardness: 1000 ppmNo pipe BlockingHigh density compressed PUF Insulation to s..

High Pressure (Main Tank can be below solar heater water tank)Work well with soft water and hard waterMaximum Water Hardness: 400 ppmHigh density compressed PUF Insulation to store hot water for up to..