FAQ Solar Water Heating


Q: How does a solar thermal system work?

A: A solar thermal system consists of a number of components; a solar collector, a pump, a controller and a hot water storage tank.

The solar collector, located on the roof, collects the sun’s energy and transfers the heat to the storage tank. The storage tank allows the hot water to be stored until it is used at night or in the morning.

Q: What is the life expectancy of a solar system?

A: The life expectancy of a solar system is more than 20 years.

Q: What is the average pay for a solar thermal system?

A: Solar hot water systems can save the home owner or business a substantial amount of money and drastically reduce global warming. At current energy prices, these systems can pay for themselves in 2-5 years, depending on the application.

Q: How long will it take to install a solar system?

A: On average it takes less than a day to install a solar system.

Q: How much maintenance and service is required?

A: Our solar technology requires virtually no maintenance of the system except for wiping clean the collector surface if it collected dust. We do however recommend that the system be checked annually to ensure that you are getting the best possible efficiency out of the system.

Q: What happens if on an evacuated tube collector a tube is broken?

A: On our evacuated tube heat pipe solar collectors the system will remain operational, only the efficiency of the system will be reduced slightly. Replacing the broken glass tube is a very simple and inexpensive operation.

Q: Will a solar hot water heating system work on a cloudy day?

A: Yes. Although the heat output of the solar collector is reduced on overcast days it will still be able to provide heating. Approximately 25-30% of the sun’s energy actually gets through the clouds.

Q: Can I use a solar hot water heating system with my existing hot water system?

A: Yes. ITS manufactures a special conversion valve to change your normal geyser into a solar geyser.

Q: What are the advantages of evacuated tube solar collectors over flat plate collectors?

A: ITS evacuated tube and ITS flat plate solar collector products are both of very high standard and offer superior performance when compared to many other brands on the market. There are a lot of different arguments about which type of collector is better and unfortunately this is often driven by what technology that company sells and not based on facts. Our measurements have shown that our evacuated tube collectors provide a more constant output throughout the year and they are frost resistant. The life expectancy is also longer on the evacuated tube collectors. Our flat plate collectors are however slightly cheaper and if installed with the correct controller system frost will not be a problem. Our conclusion is therefore: Installing a flat plate collector is a very good thing to do and installing an evacuated tube collector even better.