What makes a room freeze in summer with no HVAC or air conditioning unit?
According to ghost hunters, it is believed that if a spirit is trying to manifest or become physically visible to others, it will pull energy out of the environment. Since environmental heat is a form of energy, that available heat is being pulled out by the ghost, causing cold or chilling spots in the room. This vague explanation of this Redditor proved ghosts harness the heat in our environment to make themself physical. He said this event happened when he was a teenager, and the external temperature was 100F, while his room was cold.
It was so cold that he could see their breath had turned into frost on his windows, and to top it, they had no HVAC or air conditioning system. Due to the frequency of cold spots and other environmental disturbances, paranormal researchers and ghost hunters use modern technologies to get a baseline measurement of a location’s environment and try to document any sudden changes during their investigation.