The anode rod is the most overlooked component in your water heater — and the one most responsible for preventing tank failure. STL Plumbing Pros inspects and replaces anode rods to protect your water heater from internal corrosion and eliminate sulfur odor problems. A $200 anode rod replacement can add years to a $1,500 water heater.
Signs Your Anode Rod Needs Replacement
Rotten egg smell from hot water — hydrogen sulfide from anode rod reaction with bacteria.
Water heater is 3–5+ years old and the rod has never been inspected.
Rust-colored hot water — may indicate the anode is depleted and the tank is beginning to corrode.
Popping or rumbling sounds — can indicate sediment buildup that also accelerates anode depletion.
Visible corrosion on the anode rod port at the top of the tank.
Our Process
Inspect Current Rod
We remove the existing anode rod and assess its condition — fully depleted, partially depleted, or still serviceable. This tells us how aggressively your water is corroding the rod.
Replace with the Right Type
We install the appropriate replacement — standard magnesium, aluminum/zinc (for sulfur smell), powered electronic, or flexible segmented for tight-clearance installations.
Test and Recommend Schedule
We verify the installation, check for any other maintenance needs, and recommend an inspection interval based on your water conditions.
Pricing
| Service | Price | Details |
|---|---|---|
| Anode rod inspection | $75–$125 | Visual inspection and condition assessment. |
| Standard magnesium anode rod replacement | $150–$300 | Most common type — protects against corrosion. |
| Powered anode rod (electronic) | $250–$400 | Never depletes — eliminates sulfur smell permanently. |
| Flexible anode rod (tight spaces) | $175–$325 | Segmented rod for water heaters with low clearance. |
Why Choose STL Plumbing Pros?
🛡️
Preventive Maintenance
A $200 rod replacement can prevent a $1,500+ water heater failure. We help you protect your investment.
🔧
Right Rod for Your Water
We recommend the anode type based on your water chemistry — not a one-size-fits-all approach.
📋
Complete Assessment
During rod replacement, we also check sediment levels, valve condition, and overall tank health.
What Our Customers Say
"Hot water had a sulfur smell for months. They replaced the anode rod with a powered one — smell gone completely. Should have called sooner."
"Water heater is 7 years old and the rod was completely gone. Glad we caught it before the tank started corroding."
"Quick service, fair price. They also flushed the tank while they were there. Comprehensive maintenance visit."