[Brentw]

Don't have a passport, but most brands of AC units are used in many rvs. My experience has shown me that the AC unit may have the capability of the optional heat, and some actually have the heat strip installed.
It will not do to much for you, most are around 1200 watts, picture the blower in the AC unit whistling past a single 1200 watt heat coil. But 1200 watts of heat may take the chill off of a cool evening.