After household heating and cooling, water heating is the second-highest energy cost for the typical household, but a solar hot water system can save you hundreds of dollars per year. And when there’s a cloudy day, solar hot water systems tie into existing conventional water heating systems for backup.

1. Your Home
Just as with a solar electric system, a solar hot water system is a practical option for homeowners in Nassau County. But there are several other site-specific factors that a qualified solar installer can help you consider.

Face South: A south facing location, such as your roof, is ideal for your solar hot water system. However, southeast and southwest are quite good, and east and west can still yield good results.

No Shade: If you have an unshaded location on your property, you can install a solar water system. Shade from trees, surrounding buildings, or even your own chimney can drastically reduce the efficiency of your system. If removing a tree or a branch is unavoidable, consider replacement with a native tree elsewhere on your property. Also keep in mind that you may be required by your municipality to obtain a permit prior to tree removal. Trees provide natural energy savings by shading and cooling your home, and they also serve as carbon sinks by taking in carbon dioxide. Removing trees can negate both the energy savings (higher summer cooling bills) and environmental benefits (more greenhouse gasses) of installing a solar hot water system.

The Panels: Most homes require two or more panels, depending on the number of occupants. Because each panel is about four feet wide and eight to ten feet long, you may need a fairly large roof. The collector may be elevated in order to allow for proper drainage.

2. Choose an installer
Similar to choosing an installer for a solar electric system, you’re going to need a trained solar hot water system installer to help you select an appropriate system for your home, as well as guide you through the local permitting process. Refer to the Steps to Getting a Solar Electric System page for tips and resources on how to choose a solar contractor.

One thing to keep in mind is to ensure that the manufacturer of your new system is certified by the Solar Rating and Certification Corporation (SRCC), a non-profit organization that has developed national standards for solar water heating. The collectors should also have a current International Association of Plumbing and Mechanical Officials (IAPMO) approval.

3. Maintenance:
After installation, the solar system needs no special maintenance, but plumbing and other conventional water heating components require the same maintenance as conventional systems. Systems with electrical components may require a replacement part after about 10 years. And of course, make sure your contractor gives you written instructions on how to operate the system.