Always use non abrasive cleansers on your solar panels. An abrasive cleaner can scratch the surface of the panel and cause permanent damage and affect how well the solar panel works. There are commercial cleaning solutions to use or you can use a pool skimmer with a very soft cloth on it.
Solar panels reduce the amount of energy used to heat your home and water. While the use of solar panels does cut down your energy costs, they are expensive and it may take several years to recoup the cost in reduced energy costs. Check for government incentive programs to help pay for them.
A solar powered fan for your attic is a good choice if switching completely to solar power is not feasible. The fan will have a temperature sensitive gauge and switch itself on when necessary. This will remove heat and lower the cost of cooling. It's also solar powered, so you don't have to pay to power it.
Forget the salesman or the confusing websites, this video will show you what a solar panel system REALLY costs. From the most basic starter kit to a whole …