Between 60 weeks and 120 weeks depending on water quality
They should be replaces every 5 years to ensure energy savings.
67:14.
When did you last clean it out. It should be drained and cleaned at least every 3-4 years.
It can last for several years, depending on the ammount of water in the water table.
20 years at least, provided the hot water heater is serviced and maintained by a plumber once a year.
Commercially canned corn should last up to three years.
Water,
100 years
well over the last 50 years 99 treaties have been negotiated
Well i should last about 3-10 years. Depends on how you treat it really. But you should look after it so your looking at 6 years tops.
With Gas (natural, propane, etc) fired - 12 to 15 years Electric water heater - 16 to 20 years The real key to making a water heater last is to drain it once every year. This gets all the sediment out of the bottom which will prevent eventual rusting and eventually, leaks.
No, undercoating should last for years.