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I get asked this question on almost every water heater job I do. The customer is standing there watching me pull out their old unit and they say, "So what's the best one to get? We want something that's going to last."

And here's what I tell them — honestly, straight up — there is no best water heater. Every single one of them, regardless of brand, regardless of price, is designed to fail. That's not me being cynical. That's just the reality of how water heaters are manufactured and sold.

The Hard Truth About Water Heater Lifespan

Most tank water heaters — electric, gas, propane — are built to last somewhere between 8 and 12 years under normal conditions. Some make it to 15. Most don't. The manufacturers know this. The plumbers know this. The homeowner usually finds out the hard way when there's water on the basement floor.

I've replaced Bradford White units, Rheem units, A.O. Smith units, State units — all the major brands. They all fail. Some fail sooner because of hard water buildup. Some fail because of a faulty element or thermostat. Some just reach the end of their design life and give out.

The bottom line: Don't let anyone sell you a water heater based on the promise that it will outlast the competition. What matters more is proper installation, annual maintenance, and understanding what's happening inside your tank.

So What Should You Actually Look For?

Since brand isn't really the deciding factor, here's what we actually pay attention to when recommending a unit:

1. First Hour Rating

This tells you how much hot water the heater can deliver in the first hour of use. If you have a big family or heavy morning demand, this number matters more than tank size alone. A 50-gallon tank with a high first hour rating will outperform a 50-gallon tank with a lower one.

2. Energy Factor

The more efficient the unit, the lower your monthly gas or electric bill. Higher efficiency units cost a little more upfront but pay back over time — especially with how energy costs have been moving.

3. Warranty

Most standard water heaters come with a 6-year warranty. You can pay more for a 9 or 12-year warranty model. Whether that's worth it depends on your water quality. In hard water areas like Washington, Union, and St. Clair, even a 12-year warranty unit may not make it that long without a softener.

4. Your Water Quality

This is the one most people don't think about. Hard water — which we have throughout Franklin County — deposits sediment at the bottom of your tank year after year. That sediment insulates the water from the heating element, forces the unit to work harder, and shortens its life significantly. If you don't have a water softener, you're burning through water heaters faster than you need to be.

Electric, Gas, or Propane?

We install all three. Which one is right for you comes down to what's already in your home and what your utility costs look like. Natural gas tends to heat water faster and costs less to operate in most areas. Electric is simpler to install and maintain. Propane performs similarly to natural gas but your fuel cost depends on your supplier and tank situation.

We don't push one over another — we recommend based on what makes sense for your home, your usage, and your budget.


The Most Important Thing You Can Do

Flush your water heater once a year. Attach a garden hose to the drain valve at the bottom, run it outside or to a floor drain, and let the sediment flush out. It takes about 20 minutes and it's the single best maintenance step you can take to extend the life of your unit.

If you're not sure how to do it or you want someone to check the condition of your anode rod while they're at it, give us a call. We're happy to walk through it with you.

Bottom line: Buy a reliable mid-range unit from a reputable brand, make sure it's installed correctly, get a water softener if you don't have one, and flush it every year. That's the honest answer to "what's the best water heater."

Posey Family Plumbing
Brian Posey
Owner · Posey Family Plumbing · Washington, MO
Questions about your water heater? Call or text me directly at (314) 620-4809. I'm happy to talk through it before you spend any money.