Every 3 months would be fine. I change mine once every 2 months just to be on the safe side.
Actually some change it more often as the water is such poor quality that they lease the heater rather then buy one so they take a 3 week lease with an option to upgrade as needed
If you are talking about a 30/50 gal residential hot water tank, they may have to be changed every 10/15 years. If you are not getting proper regulated hot water in the shower, then it might be time to change the tank.
There is no way to predict how long a given heater is going to last. Quality of the water, how much it is used, what temp. setting are all going to be different. All of these things affect how long it is going to last and the type of heater itself is going to vary.
I replace many and they are mostly 12 -15 years old.
They should be replaces every 5 years to ensure energy savings.
When did you last clean it out. It should be drained and cleaned at least every 3-4 years.
Most are rated for 5-10 years depending on cost.
Provided that you don't run into any major problems a hot water heater should last you somewhere between 5 and 10 years. There should be a serial number on the bottom that will tell you how old your heater is. If the heater starts to leak or you can see rust starting to form then it may be time to replace.
20 years at least, provided the hot water heater is serviced and maintained by a plumber once a year.
The average time it takes a tankless water heater to provide water for usage is immediate. The water in continuously hot for your usage. The average tankless water heater has a life expectancy for 20 years.
it should, unless there was a major body style change between the 2 years.
You should change your water pump for 4 to 5 years after you put in your first one.
Heater plugs in a ford focus 1.8 engine should be changed every 18 months-2 years.
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.
Every two years to be safe
It's because "hot-water" is a compound adjective, modifying "heater". It's not for heating water, it's for heating a house with hot water. There are many types of heaters that heat water, but only a hot-water heater is used for providing heated water for domestic use. A hydronic boiler also heats water, but it's only for use in radiators.The name "Hot Water Heater" is completely wrong for any use. There is no need to heat hot water. IT has always been "water heater". The term hot water heater has just been used for years because people don't realize the difference. It has always been WATER HEATER.The first answer is jibberish and makes no practical sense at all.