Yes really dude , old houses and buildings before plastic have cord rapped wires which become bare over time . These old systems were also installed without a ground , causing high frequencies within the household . EMF readings go off the chart in structures such as this . Hooking up modern appliances to these systems that require a ground increase radio waves and high frequencies thru bare wires and insufficient neutral return https://en.m.wikipedia.org/wiki/Electromagnetic_radiation_and_healthhttp://www.cpccorp.com/harmonic.htm