Purana Mandir proved to be a stupendous hit across India and led to multiple movies offering the similar formula and roster. The haunting theme from the movie was used within several other subsequent Ramsay releases such as Tahkhana, Dak Bangla, Veerana etc. Samri became a household name and resulted in an unrelated, nevertheless Ramsay produced release, Saamri 3D. Purana Mandir was a path breaking film in the horror genre of Indian films.
A tragedy occurred for a scene where Ajay Agarwal had to get out of the coffin and scare everyone.Shyam and Tulsi Ramsay were ready to take the shot and said action but Ajay Agarwal didn't come out of the coffin and they realized that the coffin had got locked it took an hour for the crew to remove him out of the coffin.Ajay Agrwal was then hesitant to do the scene but later agreed.
The entire film was shot and complete except the demon scenes. The producers were worried because they could not find the right person to play the role. Finally one day Anirudh was spotted by a friend and told to visit the Ramsay office. Upon seeing Anirudh enter the office, all the Ramsay brothers sprinted and jumped up with excitement!. They had finally found their demon for the film.