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.
If the noise happens only when your furnace comes on and it takes several seconds or even minutes before hot air comes, the furnace burners may be dirty. Dirt on the furnace burners allows gas to accumulate in the furnace before the gas ignites. This delayed ignition from that big gas buildup causes the loud bang. Itâs like a mini-explosion. Please donât ignore this noise as delayed ignition can crack your furnaceâs heat exchanger. And once thatâs cracked, youâll need a new furnace. Have a professional clean the furnace burner if this is the cause of the noise. If you hear the noise a few feet away from the furnace, then the problem is likely with the air ducts. When your furnaceâs blower starts, itâs both sucking in air from your home and blowing it out through supply ducts.