If your diving nearly every day of the year, a compressor might be worth the expense/risk. Some people do it, but I wouldnt want the hassle. They can be expensive and the upkeep is almost not worth it. You have to keep that system CLEAN. too much moitsure and you rust our your tanks not to mention gather moisture in your lungs/regs. If you get oil or debree in the system you can taint or poison your air supply. Its just not worth it to me.