Q.1. It is’t very sunny today, will the Sunpo solar water heating system work?

A.1. Best performance is achieved with direct sun light, however energy savings is guaranteed even in cloudy days thanks to diffuse radiation.

Q.2. Does the solar system work at night?

A.2. No, the system only works in daylight. At some times of the year there is insufficient daylight and that is why every system has a back up heating source

Q.3. I have heard that global warming is caused by carbon dioxide and other greenhouse gases, do solar solutions reduce these pollutants?

A.3. Your Solar Hot Water System produces no emissions whatsoever. It is entirely without any discharge of greenhouse gases or other pollutants. In fact, each kWh produced by solar energy saves 0.24 kg of CO2 emission.

Q.4. How much carbon dioxide does my system save?

A.4. Each kWh produced by solar energy saves 0.24 kg of CO2 emission. A 2 m2 collector produces in Sunpo approximately 6kwh daily. A 2 m2 system with 340 days of consumption will save 500kg of carbon dioxide a year. Over 15 year of service it will save 7.5 tons.

Q.6. Does the system still work in very cold weather?

A.6. Yes, the system will work in cold temperatures. However, it does not work if the panel is covered with snow, as this prevents light striking the absorber plate.

Q.7. What should I do if it snows?

A.7. Nothing. If snow collects on the glass surface of the collector it will rapidly melt. In fact the design is such that it will melt more rapidly from the collector surface than it will melt for other parts of your roof.

Q.8. I have noticed some bird droppings, dust or other dirt on the collector; do I need to clean the surface?

A.8. There is no need to.These will not significantly impair performance and when it next rains, they will be washed off.

Q.9. Shall I switch off the forced solar system when I go away on holiday?

A.9. No, it is better to keep it on or instead consider covering the collectors.

Q.10. What is the difference between solar heat and photovoltaics? Are these solar systems different?

A.10. Photovoltaic systems rely on silicone cells and solar energy to generate direct electric voltage, which is later inverted to usable alternating current at net voltage. The total PV system efficiency is 10%. 13% for the module itself. Solar systems that use solar heat, rely on the sun's radiation to heat the water in solar collectors. The heated water is collected in a storage tank. Average solar water heating system efficiency is 50-60%.

Q.11. What is the life expectancy of the Sunpo system?

A.11. Our Solar Hot Water Systems have a demonstrated recorded life expectancy of over 25 years and have proven to withstand the harshest weather conditions.

Q.12. How long will it take to recoup my investment?

A.12. Sunpo are much more affordable than many other solar hot water heaters. For a household of 4, the price of a full system may be similar to that of a new electric or gas system. Depending on you location (solar levels) and current hot water usage, the annual electricity or gas saving will differ. However in a normal household that spends 25% of its electricity bill on hot water heating, the full cost of the purchase may be recouped as quickly as 4-5 years in reduced bills. You will definitely make considerable savings during the life of the solar hot water heater. Federal and local rebates and incentives can provide an accelerated return on your investment.

Q.13. What happens if one of the Sunpo evacuated tubes is broken?

A.13. Sunpo evacuated tubes are very strong and not easily broken, but if the worst should happen, solar tubes are very easy to replace. Although Sunpo Solar Collectors have the ability to operate with several broken tubes, it is recommended that broken tubes be replaced immediately to retain efficiency. Replacement tubes are available through your local distributor at a very reasonable price.

Q.14. Can the Sunpo solar collector heat water to a high enough temperature?

A.14. Yes, in good weather the Sunpo solar collector can bring water to boiling point. Generally this is not necessary and so the system should be designed to provide a daily temperature rise of around 25-30oC (45-54oF) in the summer. Sizing a domestic system that can bring the cold water up to 60oC/141oF in a single day is not logical, because if hot water is not used for one day, the following day the system will be boiling and dumping hot water via the temperature relief valve. This is both a waste of energy and water! Please sensibly size solar water heating system to ensure optimal performance and minimal wastage of water.

Q.15. Time and the terms warranty Sunpo product?

A.15. Limited Warranty and Liability:
Sunpo works hard to provide quality products, but if there is a quality problem that effects the normal operation of the product we will work closely with the local engineering or installation team to ensure it is fixed as quickly as possible. The length of coverage and terms and conditions vary for each product, so please refer to the details:
a. Sunpo warrants to the distributor who purchased the product from Sunpo . Sunpo warrants that, for a period of 5 years for the tanks and 5 years for the collector and 1 years for the fittings from the warranty initial date, each component of the Products shall meet in all material respects the Sunpo specifications. The warranty for the heating elements is for a period of 1 year from the initial date.
b. There is no warranty for anodes.
c. During the Warranty Period, Sunpo shall, at Sunpo’s option, repair, replace or give credit for any component that is returned to an authorized service center and that is found by Sunpo to contain defects

Q.16. What is the Solar Radiation level where I live?

A.16. Solar insolation is the amount of electromagnetic energy incident on the surface of the earth. In other words, how much sunlight is shining down on us.
Solar Insolation is the amount of electromagnetic energy (solar radiation) incident on the surface of the earth. Basically that means how much sunlight is shining down on us. By knowing the insolation levels of a particular region we can determine the size of solar collector that is required and how much energy it can produce. An area with poor insolation levels will need a larger collector than an area with high levels.
Africa ; Asia ; Australia ; Canada ; Europe ; Middle East ; New Zealand ; South America ; USA
Solar insolation levels are generally expressed in kWh/m2/day and is the amount of solar energy that strikes a square metre of the earth's surface in a single day. Btu or MJ may also be used, in which case the conversion is: 1 kWh/m2/day = 317.1 btu/ft2/day = 3.6MJ/m2/day
The raw energy conversions are: 1kWh = 3412 Btu = 3.6MJ = 859.8kcal
Insolation levels change throughout the year, lowest in winter and the highest in summer. Close to the equator the difference throughout the year is minimal whereas at high latitudes winter can be a fraction of summer levels. A very high summer value, as you would see in a hot desert is 7kWh/m2/day.
Below are links to a list of insolation levels for main cities in each region: