runs for approximately 43 minutes, the average length for a "Psych" episode. "Who Ya Gonna Call?", along with the fourteen other episodes from "Psych's" first season were released on a four-disc DVD set in the United States and Canada on June 26, 2007. The set includes full audio commentaries for six episodes, deleted scenes for most episodes, blooper reals, audition tapes, character profiles, the international version of the episode "Pilot", an "Inside the writers' room" featurette, and other special features. The set is filmed in , with English subtitles available, and Dolby Digital 5.1 Surround. The DVD set was released in the United Kingdom and other Region 2 countries on January 9, 2008, and was released in Australia on April 30 of the same year. The entire first season has also been released on the iTunes store for digital download, as well as independent downloads of each individual episode. According to Nielsen Media Research, "Who Ya Gonna Call?" was viewed by approximately 4.80 million people in its original American broadcast. The episode earned a 1.5 rating/4 share in the 18–49 demographic, meaning that on average 1.5 percent of all television-equipped households were tuned into the installment at any given moment, while 4 percent of households watching TV were tuned into it during the time slot. The installment was the sixth most watched cable program on its air date, falling behind its lead-in, "Monk", which was seen by about 5.6 million people and placed fourth. The episode's ratings were a slight improvement from the previous episode, "Weekend Warriors", which was viewed by 4.76 million people, and was also better than the following episode, which was viewed by approximately 4.6 million people. Since airing, the episode has received generally positive reviews from critics. In his review for IGN, contributor Colin Moriarty stated that the episode was "as strong as we've come to expect in recent weeks" and called it "undeniably fun to watch and has the ability to get a laugh out of you even if you're in the worst of moods". Moriarty praised the chemistry that was developing between the actors, and hoped that "all of the characters will get more involved to really see where they are all going". He hoped that the show "ends on the high note it's been reaching towards rather than heading towards a decrescendo that hurts many a promising show" and added that "in the meantime, check out this episode for a good laugh, and wait patiently for the culmination of the first season".