How long does solar water heater last The lifespan of a solar water heater largely depends on the quality of the system and how well it is maintained. On average, a well-maintained solar water heater can last anywhere from 15 to 25 years or more. However, some components of th...

The species Homo sapiens has all the time had the same intelligence and possibly inventiveness. Ones should thererfore expect a constant rate of cultural development from ca 10000 years ago or before, when our species appeared. This might really be the case and then most of th...