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The OKSUL-150 is a compact system with everything contained in the panels. The system includes a dc pump that is powered by its own photovoltaic panel and a 150 liter tank. The system can be mounted in the roof for better curb appeal and is easier to install because it does not require connection to the home's electric system. Their website is not much help and does not have a stated guarantee for their products. The brand is a part of MONDRAGON CORPORATION and the units are made in Spain.
OVENTROP------ oventrop-us.com ----1*
These systems are made and sold in the USA. They offer two sizes of packaged systems (80 or 115 gallon) and feature stainless steel storage tanks for durability and evacuated tube collectors for efficiency. The warranty on the systems is not as good as some of the other brands and they do not tell you how you can purchase the systems.
This brand is a part of PALOMA INDUSTRIES and the systems are available in the USA but not in Canada. The SolPak systems are available in either 80 or 119 gallon capacities and with electric or gas fired backup heating. They use flat plate collectors and have a multi-speed pump. The warranty on the systems is not as good as other brands.
These water heating systems are made by Rheem Manufacturing. Their SolPak systems are available in 80 or 120 gallon sizes but the warranty is not as good as some other brands.
This brand is made and sold in the U.K. The S CLASS SYSTEM consists of a complete kit with panels that can be either mounted on or in the roof. The ECONRANGE systems have a warranty that is not as good and receive a <1* rating.
ROTEX------ rotex-heating.com ----<1*
These systems are made in Germany and are sold throughout Europe. The SOLARIS systems are available as automatic drain back systems or as closed loop systems and feature basic flat panel collectors. Their website is not much help and does not have a stated warranty policy. Rotex is a part of the DAIKIN GROUP.
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