Why Water Heater Maintenance Matters in Northwest Arkansas
Your water heater works every single day — showers, dishes, laundry — and most homeowners in Fayetteville, Rogers, Bentonville, and Springdale don’t think about it until something goes wrong. That’s usually an expensive mistake.
According to the U.S. Department of Energy, water heating accounts for about 18% of a home’s total energy use — making it the second largest energy expense behind heating and cooling. A poorly maintained unit doesn’t just risk failure. It quietly drives up your utility bill every month.
The good news: a consistent maintenance routine takes less than an hour once a year and can add years to your unit’s lifespan. Here’s exactly what to do — and when to call in a pro.
How Long Should a Water Heater Last? What NWA Homeowners Should Know
The U.S. Department of Energy puts the typical lifespan of a tank water heater at 8 to 12 years. With regular maintenance — annual flushing and periodic anode rod inspection — many units push well past that range.
Northwest Arkansas sits in a region with moderately hard water. Mineral deposits from that water collect at the bottom of your tank over time, forcing the heating element to work harder and shortening the unit’s life. That sediment buildup is the number one maintenance issue we see on service calls across the area.
If your unit is already showing symptoms — rumbling sounds, inconsistent hot water, or visible rust — check out our guide on water heater repair and replacement in NWA to understand whether you’re looking at a fix or a full swap.
Your Annual Water Heater Maintenance Checklist
Run through these tasks once a year. Most can be done by a careful homeowner. If anything looks off — corroded parts, leaking connections, a valve that won’t reset — stop and call a licensed plumber.
1. Flush the Tank to Remove Sediment
According to This Old House, sediment buildup from hard water is a leading cause of water heater inefficiency and premature failure. Flushing the tank annually removes those mineral deposits and restores heating efficiency.
Here’s how to do it step by step:
- Turn off the cold water supply to the heater at the shutoff valve above the unit.
- Switch the unit to pilot mode (gas) or turn the thermostat to its lowest setting (electric) to avoid heating an empty tank.
- Connect a garden hose to the drain valve at the base of the tank and run it outside or to a floor drain.
- Open a hot water faucet somewhere in the house — this prevents a vacuum from forming and allows the tank to drain freely.
- Open the drain valve and let the water run until it’s clear and free of grit. If the water stays cloudy or brown, let the tank partially refill and flush again.
- Close the drain valve, disconnect the hose, turn the cold water supply back on, and restore power or relight the pilot once the tank is full.
Important: the water draining from the tank is extremely hot. Keep children and pets away, and wear closed-toe shoes.
2. Inspect the Anode Rod (Every 2–3 Years)
The anode rod is a sacrificial metal rod — usually magnesium or aluminum — that sits inside your tank and attracts corrosive minerals so they attack the rod instead of the tank walls. Once it’s depleted, those minerals go after the tank itself.
Check it every two to three years. To inspect it, locate the hex head on top of the water heater (sometimes under a plastic cap), use a 1 1/16-inch socket wrench to unscrew it, and pull the rod out. If it’s less than half an inch thick, coated in calcium, or heavily corroded, replace it. A new anode rod costs $20–$50 at a hardware store — a small price compared to a tank failure.
3. Test the Temperature and Pressure Relief (T&P) Valve
The T&P valve is a safety device that releases pressure if the tank overheats or pressure builds too high. A stuck or failed T&P valve is a serious hazard. Test it once a year.
Lift the test lever briefly — you should hear a rush of water or steam release into the discharge pipe. Release the lever and it should snap back and stop flowing. If it keeps dripping, doesn’t release at all, or feels corroded and stiff, it needs to be replaced immediately. This is a job for a licensed plumber.
4. Check and Adjust the Temperature Setting
The EPA and most plumbing professionals recommend setting your water heater to 120°F. That temperature is hot enough to kill most bacteria, safe enough to reduce scalding risk, and efficient enough to lower your energy bill.
Many units ship from the factory set to 140°F. Dropping to 120°F won’t affect performance for most households, and the EPA WaterSense program notes that efficient water heating practices can reduce household water heating costs by 10 to 50 percent depending on your system and usage habits.
5. Add an Insulation Wrap (Older Tanks)
If your unit is more than seven years old and located in an unconditioned space — a garage, crawlspace, or exterior utility closet — consider adding a water heater insulation blanket. These cost $20–$30 at home improvement stores and reduce standby heat loss, which means the burner or element cycles on less often.
Check the label on your tank first. Some newer units already have adequate foam insulation built in and don’t require additional wrapping. Don’t cover the top of a gas heater, the thermostat, or the T&P valve discharge pipe.
6. Visual Inspection for Rust and Corrosion
Once a year, spend two minutes looking at the outside of the unit. Check the connections at the top of the tank where the cold and hot water lines attach — these are common spots for slow drips that go unnoticed. Look at the base of the tank for any sign of pooled water or rust staining on the floor.
Surface rust on the outside of the tank isn’t always cause for alarm. Rust on the connections, water stains on the floor, or discoloration on the relief valve pipe are different stories. Those warrant a professional inspection before the situation gets worse.
| Maintenance Task | Recommended Frequency | DIY or Pro? | Estimated DIY Cost |
|---|---|---|---|
| Sediment flush | Annually | DIY-friendly | $0 (supplies only) |
| Anode rod inspection | Every 2–3 years | DIY or Pro | $20–$50 (replacement rod) |
| T&P valve test | Annually | DIY (replacement = Pro) | $0 to test; $15–$30 to replace valve |
| Temperature adjustment | Once (then as needed) | DIY-friendly | $0 |
| Insulation wrap | One-time (older units) | DIY-friendly | $20–$30 |
| Visual rust/leak inspection | Annually | DIY | $0 |
The Real Cost of Skipping Maintenance
Skipping annual upkeep doesn’t save time — it shifts the cost forward and multiplies it. According to Angi, the average water heater repair in the U.S. runs between $220 and $960, while a full replacement installed typically costs $820 to $1,290 or more depending on the unit type and location.
By contrast, the annual maintenance tasks above cost almost nothing out of pocket — a couple of hours of your time and maybe $30 in supplies. That math is hard to argue with.
Beyond the repair bill, a neglected water heater also means higher energy costs every month it’s running below efficiency. And if a failing unit floods your utility room, you’re adding water damage remediation to the tab. We’ve seen it happen in homes throughout Bentonville and Springdale — a slow leak that went unnoticed for months turned into a flooring replacement job.
If you’re hearing rumbling or popping sounds coming from your tank, that’s almost always sediment. Don’t ignore it. Read more about what those sounds mean and when they signal trouble in our post on water heater noise and repair options for NWA homeowners.
When DIY Ends and a Licensed Plumber Begins
Most of the tasks above are genuinely homeowner-friendly. But there are clear lines where a licensed plumber needs to be involved — and in Arkansas, that line is legally defined.
The Arkansas Department of Health Plumbing Program requires that water heater installations and replacements be performed by or under the supervision of a licensed plumber. That rule exists for good reason — improper installations can lead to gas leaks, carbon monoxide exposure, or pressure failures.
Call a pro when you find: a leaking tank base (not a connection — the tank itself), a T&P valve that won’t reseat after testing, an anode rod that’s completely disintegrated, or any sign of gas odor near the unit. These aren’t DIY situations.
If your unit is more than 10 years old and showing any of the symptoms above, it’s worth having a licensed plumber assess whether repair or replacement makes more financial sense. Our team can walk you through that decision — check out our full breakdown at Water Heater Repair & Replacement in NWA.
And if you’re dealing with a broader plumbing concern alongside your water heater — backed-up drains, slow flow throughout the house, or sewer-related issues — our drain and sewer solutions for Fayetteville and NWA page covers what to look for and when to act.
Keep Your Water Heater Running Strong — We’re Local and Ready
Water heater maintenance in Northwest Arkansas isn’t complicated — it just needs to happen consistently. Flush the tank once a year. Check the anode rod every two to three years. Test the T&P valve. Set the temperature to 120°F. Do a visual check every time you walk past the unit.
Those five habits protect a $1,000+ appliance, keep your energy bills in check, and eliminate the kind of middle-of-winter emergency that nobody wants to deal with.
When something does need a professional — or you want a licensed plumber to handle the full annual maintenance for you — A Plus Plumbing of NWA is the local team Fayetteville, Rogers, Bentonville, and Springdale homeowners call. We’re licensed, insured, and offer same-day availability with upfront pricing. No surprises.
Call A Plus Plumbing of NWA at (479) 305-9107 or request service online for same-day availability.