Should I Repair or Replace My Water Heater?

Start with the age of the heater

Age is the single biggest factor. A tank water heater that is only a few years old is usually worth repairing. A tank that is ten years or older is closer to the end of its life, and spending money on major parts may only delay a replacement. Tankless units last longer, so repairs often make sense for many more years, especially if the unit has been descaled regularly.

You can find the manufacture date in the serial number on the heater label. If you cannot read it, send us a photo and we will help.

Problems that are usually worth repairing

These parts can be replaced without replacing the whole heater:

• Thermocouples, flame sensors and igniters
• Gas control valves and thermostats
• Electric heating elements
• Temperature and pressure relief valves
• Drain valves and supply connections
• Anode rods

Problems that usually mean replacement

A leak from the tank itself is the clearest sign that replacement is needed. Once the inner tank corrodes through, it cannot be repaired. Rusty water coming from the hot side only, heavy sediment that cannot be flushed and a heater that needs repeated repairs are other signs. If the heater is too small for your household, replacement also solves the problem of running out of hot water.

Think about efficiency and your household

Newer water heaters are built to current efficiency standards. If your household has grown, if you are tired of running out of hot water, or if you are interested in endless hot water, a replacement may be a chance to upgrade to a different size or a tankless or heat pump model. We explain how each option fits your home and usage.

Consider code and safety updates

Older installations sometimes lack current requirements such as proper seismic strapping, an expansion tank, correct venting or a drain pan. When we replace a heater, we bring the installation up to current code. A permit is typically required for water heater replacement in California cities, and we explain the permit and inspection steps for your home.

A simple way to decide

A helpful rule of thumb: if the heater is fairly new and the repair is a single part, repair it. If the heater is older, the tank is leaking or you have had several repairs recently, replacement usually makes more sense. Our technicians give you both options in plain language and never pressure you. For pricing on either choice, call for a free quote.

Questions to ask before you decide

A few simple questions can make the decision clearer. How old is the heater, and how many more years can you reasonably expect from it? Has it needed other repairs recently? Is it still covered by a manufacturer warranty? Does it provide enough hot water for your household today? Would you like to switch to a tankless or more efficient model? If several of these answers point toward an aging or undersized heater, replacement usually gives you more peace of mind. If the heater is newer, fits your needs and the problem is a single part, a repair is often the smart, money-saving choice. Our technician will walk through these questions with you on site.

Talk to a local expert

The Water Heater Warehouse is a licensed contractor based in Fullerton. We carry tank and tankless units on our trucks, so if replacement is the right choice it can often be done quickly. Every replacement includes haul-away of the old unit. Call us to talk through your situation.

Related service

Learn about our water heater replacement, or see our water heater repair in Fullerton.

Frequently asked questions