Gerulaitis died on September 17, 1994, at the age of 40. While he was visiting a friend's home in Southampton, New York, an improperly installed pool heater caused carbon monoxide gas to seep into the guesthouse where Gerulaitis was sleeping, causing his death by carbon monoxide poisoning. Gerulaitis failed to show up for a dinner at 7 p.m. that evening and his body was found the following day by a maid who went to the guesthouse. Gerulaitis' remains were interred in Saint Charles Cemetery in Farmingdale, New York.