Only two types of systems can survive in climates that experience freezing temperatures: (1) closed-loop pressurized, and (2) closed-loop drainback systems.

All of our kits are closed-loop systems. The main components of our closed-loop solar hot water systems are:

(1) Solar collector panel. Usually mounted on your roof, the collector captures the heat from the sun and transfers it to the liquid circulating through the panel.

(2) Solar storage tank. The solar storage tank is where the heat energy captured by the collector panel is stored for later use.

(3) Heat exchanger. The heat exchanger transfers the heat energy captured by the collector panel is transferred to the potable water that is stored in the solar storage tank. In our pressurized system, the heat exchanger is integral to the solar storage tank.

(4) Control system. The control system consists of the differential controller and the circulating pump(s). The differential controller compares the temperature difference between the solar storage tank and the collector panel. When the collector panel temperature is 20 degrees higher than the storage tank temperature, the controller turns on the pump(s) and circulates the water through the system until the temperature difference is only a few degrees, then turns the pump off.

Pressurized Systems are best used when you cannot install all of the lines from the collector to the drainback tank with a slope. Pressurized systems are sometimes easier to install in an existing home do to these slope limitations. These systems require an annual fluid check for pH of the glycol solution. This is easily accomplished by the homeowner.

• Collector panels (number and size depend on the kit you order)
• Collector roof mounts
  
• Storage tank (size depends on the kit you order)
• Our exclusive EasySolar Control Module containing pump, differential controller, sensors, gauges and flowmeter all pre-assembled and ready to use.
  
• Food-grade antifreeze
  
• Complete instructions
• Custom Care technical support