solar hot water system installed on roof

FAQs about solar hot water heating.

Will I have hot water on cloudy days?

Yes your solar system will still generate some hot water on cloudy days, but it will not produce as much as on sunny days.  Therefore, the back up electric element will kick in late in the day to ensure you always have hot water, no matter the weather.

Will I run out of hot water?

No if your system is not generating enough hot water for you demand then it will switch over to your booster heater which normally uses an electric element.

Will the water be hot enough?

Yes. For example an Apricus solar hot water system can produce water temperatures as high as 80°C (the average temp for a hot shower at home is 40°C). The system is designed to lower the temperature to meet the appropriate health and safety requirements.

Can solar hot water systems be used in cold climates?

Yes, because of the unique design a standard Apricus system can be used in temperatures as low as -15°C.  There are special designs available for locations with even lower temperatures.

Why is solar hot water better than instantaneous gas?

Solar hot water heating is better than gas hot water systems in two ways. First, it is more economical to run and second, it is much, much better for the environment. Gas systems burn a fossil fuel which is not renewable and releases carbon dioxide, which is having a negative impact on the environment.

Why are tubes better than flat plate systems?

The tube design allows for replacement of a single tube rather than a whole system in case of a problem. They also have a greater surface area than flat solar panels and therefore take up less roof space while producing the same amount of energy. This extra curved surface area also performs better than a flat plate in shady or cloudy conditions.

How long will a solar hot water system last?

There is a 10-year warranty on Apricus evacuated tube solar hot water collectors. Plus, a 15-year warranty on the header pipe inside the manifold.  The systems have been installed in NZ since 2003 and we still hear from our original customers that their system is still going strong.  The evacuated tubes will eventually fail, which is easy to spot because they turn white.  These parts are easily replaced to extend the system’s lifetime well beyond 20 years.

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