Here are some key points about neuropathy. More detail and supporting information is in the main article. 1  Neuropathy is a common condition. 2  Neuropathy is a complication of a number of different medical conditions. 3  Three types of nerve can be involved; autonomic nerves, motor nerves and sensory nerves. 4  Sometimes single nerves, or nerve sets are affected.
If you never remove the scale from a water heater tank the clanking or cracking noise heard at the water heater during operation may eventually cease when the scale solidifies, no longer trapping hot water and interfering with its movement upwards in the water tank.
The GeoSpring hybrid electric water heater produces a sound when the heat pump is in operation. This hum is the result of the evaporator fan. The GeoSpring's sound is similar to the hum of a microwave vent fan. It is important to note that the sound only occurs when the water heater is recovering and is not constant.