ProgressivTube
The ProgressivTube passive solar water heater is a self-contained unit that acts as a solar collector and storage tank integrated into one piece of equipment. In most systems the unit is utilized as a pre-heater to a conventional water heater.

The ProgressivTube is a passive system because it has no moving parts and operates on local water pressure and solar radiation. There are no pumps or controls to maintain and no electrical energy is required to make it function. Once installed the system will operate automatically. When hot water is used in the household, solar preheater water is drawn into the conventional water heater reducing or eliminating electricity or gas usage for heating water.

Benefits:

• Doubles your hot water supply
• Free, hotter water
• No moving parts
• Maintenance free
• Tested and certified energy performance
• Protects against rising energy costs
• Good for the environment
• 10-year warranty
• 30-year design life
• Rust-free
• Connects to standard heaters
• Pays for itself
• Passive, self-contained solar collector and storage tank