A compressed natural gas (CNG) fueling system has a single compressor comprising a first compression stage and a subsequent compression stage, wherein the first compression stage feeds the subsequent compression stage when filling a storage tank, the storage tank is configured to receive CNG from at least one of the first compression stage and the subsequent compression stage of the compressor when filling the storage tank, a CNG feedback to the subsequent compression stage of the compressor from the storage tank, the CNG being introduced back into the compressor at a location downstream relative to an output of the first compression stage, and a first heat exchanger associated with the CNG feedback.