Jet recommends that your tank is air cleaned every year, and air cleaned and pumped every three years. However, just like a septic tank the frequency of pump outs depends on the amount you use your Jet system. For example, a family of five will need more frequent pump outs when compared to a tank servicing a single couple. Make sure you contact your Jet service provider before scheduling a pump out; your tank should be serviced before pumping to avoid damaging the BAT® media.