Capture1236 I get a lot of different questions during a home inspection. Here is ONE of the most frequently asked:  How old is my hot water tank and can it be serviced? In the City of Calgary - the average life span of a hot water tank is 10 – 12 years, however I have seen ones MUCH older! Maintenance tip: Most water heater tanks are steel with a thin glass lining to protect the metal from corrosion. Since the lining eventually cracks, tanks have a second line of defense against rust: a long metal “anode rod” that attracts corrosive elements in the water. When the rod itself becomes so corroded that it can no longer do its job, the tank soon rusts out, leaks and needs replacement. However, if you replace your anode rod before it fails, about every five years, you may be able to extend the life of your water heater. Call me for a “spot check” anytime. Cliff Keveryga C.H.I. Home Inspections Phone : 403-862-2230