Commercial Fixed Wing
Physiological - Other
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown
General None Reported / Taken
Company Policy; Environment - Non Weather Related; Human Factors
Supertug once again losing air conditioning under tow.  This time longer time is taken in between tows for air conditioning recharge and cool cabin.  Unable to open windows to get more air flow as we would no longer be able to hear air to ground radios.  Excessive perspiration due to humidity limiting vision.Water not easily accessible.  No longer provided.
Supertug driver reported the air conditioning on the tug failed while towing an aircraft making the working environment challenging.