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  • G&C Plumbing and Heating

How Long Does a Gas Water Heater Last?

Updated: Dec 16, 2021

How long does a gas water heater last

Many homeowners may be either looking to purchase a gas water heater, to replace their electrical one or may be considering buying a house that has a gas water heater already installed.

For many people, understanding how to best maintain these appliances can help extend their life.

Is Your Gas Water Heater Showing Signs of Age?

If you've purchased a house that already has a gas water heater, there's an easy way to tell how old it is.

Simply check (in most cases) the serial number located on the upper part of the apparatus.

The first two numbers in the code are the last two numbers of the year it was manufactured, so a heater with a serial number starting with 15 is one that was made in 2015.

Other indications of age include:

  • Leaking from either the tank or the pipes

  • Rusty or cloudy water from your faucets

  • Shortage of hot water, where you aren't getting as much hot water volume as before

  • Varying water temperatures, or water that runs from scalding to freezing

  • Strange noises, such as popping or rumbling sound from the unit

How To Prolong the Life of Your Water Heater

Preventative maintenance is the best way to extend the life of your gas water heater – and any other appliance in your home. This includes annual or semi-annual inspections from a professional plumber capable of detecting small problems with the heater before it gives out, plus a thorough cleaning of all parts and replacing anything that looks worn.

Other ways to prolong the life of your water heater include: