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eHome Solar, Inc.

Contact:(951) 461-9053

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Solar Panels

Reduce or Eliminate Hot Water Heating Energy Costs with a Solar Water Heating System.

Solar hot water heaters save money, reduce carbon, and lower our dependence on imported energy. eHS continues its R&D mission to provide innovative solutions for solar water heating, solar air conditioning and solar space heating.

The type of solar water heating system chosen will largely be determined by your climate as freezing temperatures may damage components. Technology for solar thermal has had great innovations in the recent decade bringing better efficiency, cost-effectiveness and reliability not previously known. A "drainback" hot water system is the state-of-the-art system design that can be used in any climate and is now the system of choice for most residential and commercial applications.

DrainBack Systems. State-of-the-art, fail-safe freeze protected with thermal limiting (active, indirect): Collector water is separate from potable water and the collector water drains into a special tank to prevent freezing and overheating concerns, once potable water reaches proper temperature or if no sunlight (heat) is available.

Glycol Systems: Indirect Heating, Differential or Photovoltaic (PV) Controlled Antifreeze Protection (active, indirect): Collector water is separate from potable water and contains non-toxic propylene glycol antifreeze. This is sometimes referred to as a "pressurized glycol" system and is freeze tolerant. The small electric circulation pump can be powered by a small PV collector.

Active Direct Systems: Direct Heating, Differential or PV Controlled (active, direct): Potable water is circulated from the storage tank to the collector when heat is available. No additional heat exchanger is required as the collector serves this purpose. The small electric circulation pump can be powered by a small PV collector. This system is for tropical, non-freezing climates.

Integrated Collector Storage "ICS" (passive, direct): Potable water is both pre-heated and stored in a roof-top unit before going into a conventional water heater. This basic system uses regular "street" or well water pressure to circulate water and does not require pumps or temperature controllers, but is subject to freeze damage.

Thermo-siphon (passive, direct): Potable water is naturally circulated from the collector to the storage tank positioned above the collector(s). Based on the principle that hot water rises, these self-contained systems heat water without use of pumps or controllers, but are subject to freeze damage. These are typically used in tropical and/or developing countries.