F.A.Q » Advantages of the solar water heater
The direct advantages of having a solar water heater are:
- Up to 80% savings on your water heating bills. There is a reduced amount of electricity or other fossil fuels (gas, electricity, etc) needed to heat your domestic sanitary water. The solar hot water can be used directly (showers, baths, laundry, kitchen) or, see ‘b’ following
- To pre-heat the domestic sanitary water prior to the conventional heating system (running on fossil fuels). Basically, instead of heating the water from 10°C to the 70°C you might need, you use the solar water heater to heat the entry 10°C water to a higher temperature (even if it is only to 18°C) and use the fossil fuel heating system to bring the hot water not from 10 to 70 but from 18 to 70°C. Each degree in temperature is 1000 calories per liter of water, and a saving of 8°C means 8000 calories per liter saved. On average a boiler has around 200 liters which means a saving of 1,600,000 cal or 1600 Kcal.
- By being made of stainless steel, the boiler will last around 10-15 years depending on how regularly you service it (especially the changing of the internal anode)
- The solar water heating systems requires very little maintenance (see maintenance)
- Since the thermal fluid in the closed circuit circulates based on the thermo dynamics of fluids, no electrical pump is needed for the system to work reducing the possibility of leakage, systems failure (if the pump stops for any reason) and expenses (for the pump and the -little- electricity used to run it)