Solar Water Heating is environmentally-friendly. It does not pollute or use valuable non-renewable resources. Even the pump to transport heat from the collectors to the storage tank is powered by the sun. Solar energy is a sound investment in everyone's future, today. Our Solar water heaters are designed for automatic daily and year round operation. A non-toxic glycol solution in the solar collectors eliminates winter freezing problems. A photovoltaic module regulates the proper daily operation of the heater and the solar loop circulator turns on only when the panels are hot enough to heat the solar tank. As one of Clean Green Energy's new generation of solar products, the WSE47 and WSE58 makes solar energy economically available to your family's needs. It's an investment in reliable performance. You have our name on it!

Solar Water Heating Systems capture heat from the sun and use it to pre-heat cold water before it goes into your hot water tank, saving a family of four up to 50% on their hot water costs. The Solar Water Heating System will become your primary source of hot water, while your existing electric, natural gas, propane, or oil hot water heater functions as an auxiliary heating source.

Even in today's economy with the rising prices of Natural Gas and Electricity, you can produce your own energy for as little as $3 per gigajoule for the next 20 years with quality solar products at Clean Green Energy. Take into consideration that the Sun's energy is free, and you can watch the cost savings increase year after year.

In addition to the savings above, our collector tubes come with a 15 year warranty and our systems are backed by an industry leading 5 year warranty. Our Products are designed in Canada - for Canadians.

Types of Solar Water Heating Systems:

Solar water heating systems (SWHS) can be either active or passive. An active system uses an electric pump to circulate the fluid through the collector; a passive system has no pump and relies on thermo-siphoning to circulate water. The amount of hot water a solar water heater produces depends on the type and size of the system, the amount of sun available at the site, installation angle and orientation. SWHS are also characterized as open loop (also called "direct") or closed loop (also called "indirect"). An open-loop system circulates household (potable) water through the collector. A closed-loop system uses a heat-transfer fluid (water or diluted antifreeze) to collect heat and a heat exchanger to transfer the heat to the household water. A disadvantage of closed looped system is that efficiency is lost during the heat exchange process.

Active Systems:

Active systems use electric pumps, valves, and controllers to circulate water or other heat-transfer fluids through the collectors. They are usually more expensive than passive systems but generally more efficient. Active systems are often easier to retrofit than passive systems because their storage tanks do not need to be installed above or close to the collectors. If installed using a PV panel to operate the pump, an active system can operate even during a power outage.

Open-Loop Active Systems
Open-loop active systems use pumps to circulate household potable water through the collectors. This design is efficient and lowers operating costs but is not appropriate if water is hard or acidic because scale and corrosion will gradually disable the system. Open-loop active systems are popular in regions that do not experience subzero temperatures. Flat plate open-loop systems should never be installed in climates that experience sustained periods of subzero temperatures. Solar water heater can be installed in an open loop in areas that experience sub-zero temperatures as long as the solar controller has a low temperature fuction.

Closed-Loop Active Systems
These systems pump heat-transfer fluids (usually a glycol-water antifreeze mixture) through the solar water heater. Heat exchangers transfer the heat from the fluid to the water that is stored in tanks. Double-walled heat exchangers or twin coil solar tanks prevent contamination of household water. Some standards require double walls when the heat-transfer fluid is anything other than household water. Closed-loop glycol systems are popular in areas subject to extended subzero temperatures because they offer good freeze protection. However, glycol antifreeze systems are more expensive to purchase and install and the glycol must be checked each year and changed every few years, depending on glycol quality and system temperatures.

Drainback systems use water as the heat-transfer fluid in the collector loop. A pump circulates the water through the solar water heater. When the pump is turned off, the solar water heater drains of water, which ensures freeze protection and also allows the system to turn off if the water in the storage tank becomes too hot. A problem with drainback systems is that the solar water heater installation and plumbing must be carefully positioned to allow complete drainage. The pump must also have sufficient head pressure to pump the water up to the collector each time the pump starts. Electricity usage is therefore slightly higher than a sealed closed or open loop.

Passive Systems:

Passive systems move household water or a heat-transfer fluid through the system without pumps. Passive systems have the advantage that electricity outage and electric pump breakdown are not issues. This makes passive systems generally more reliable, easier to maintain, and possibly longer lasting than active systems. Passive systems are often less expensive than active systems, but are also generally less efficient due to slower water flow rates through the system.

Thermosiphon Systems
A thermosiphon system relies on warm water rising, a phenomenon known as natural convection, to circulate water through the solar absorber and to the tank. In this type of installation, the tank must be located above the absorber tubes/panel. As water in the absorber heats, it becomes lighter and naturally rises into the tank above. Meanwhile, cooler water in the tank flows downwards into the absorber, thus causing circulation throughout the system. This system is widely used with both flat plate and evacuated tube absorbers. The disadvantages of this design are the poor aesthetics of having a large tank on the roof and the isses with structural integrity of the roof. Often the roof must be reinforced to cope with the weight of the tank.

Batch Heaters
Batch heaters are simple passive system consisting of one or more storage tanks placed in an insulated box that has a glazed side facing the sun. Batch heaters are inexpensive and have few components, but only perform well in summer when the weather is warm. Evacuated tube solar collectors are now an affordable and much more efficient alternative to either batch or flat plate collectors.

Please view our product catalog for pricing or use the contact page for further questions.