Tank & Tankless Specialists
Rheem Service & Repair in Marietta, GA
Rheem is one of the most common water heaters installed across Marietta — both traditional tank units and their Performance Platinum tankless line. We troubleshoot Rheem-specific issues like Guardian System lockouts and igniter faults every week, with same-day repairs and 24-hour emergency service when a Rheem unit fails without warning.
Know the Signs
Common Rheem Issues We See
The status light is flashing a fault code. Rheem's Guardian System uses specific flash patterns to signal issues like a failed thermocouple or a tripped high-limit switch — we read the code before opening anything.
No hot water, but the unit powers on. Often a failed heating element or gas valve on Rheem tanks, or an ignition fault on tankless models.
The tankless unit shows an error code on its remote controller. Rheem tankless units display specific numeric or letter codes tied to flow sensors, ignition, or venting issues.
Water temperature swings during use. Can point to a failing thermostat or, on tankless units, scale buildup restricting the heat exchanger.
The tank is older than 10 years and acting up. Rheem tanks typically last 8-12 years; repeated issues near that mark often mean replacement is the better value.
How It Works
Our Process for Rheem Repairs
We read the Guardian System code first
Rheem's diagnostic lights point us toward the actual failure before we touch a single part.
Genuine or equivalent Rheem-compatible parts
So the fix doesn't create a second problem down the line.
A function test before we leave
Confirming the unit heats correctly and the fault code has cleared.
Common Questions
Frequently Asked Questions
What does a flashing red light on my Rheem water heater mean?
It's part of the Guardian System's diagnostic display — the flash pattern (number of blinks) corresponds to a specific fault, such as a thermocouple or control board issue. We can read the exact code on-site.
How long do Rheem water heaters usually last?
Most Rheem tank units last 8 to 12 years with normal use and occasional flushing; their tankless units often last 15-20 years with proper descaling maintenance.
Can you fix a Rheem tankless unit's error code without replacing it?
In most cases yes — error codes usually point to a specific, repairable component like a flow sensor, igniter, or scale buildup rather than requiring full replacement.
Is Rheem a good brand to replace my old water heater with?
Rheem is a solid, widely available option with a strong service network, which is part of why it's so common in Marietta. We're happy to compare it against other brands for your specific needs.
Have a Rheem Unit That Needs Attention?
Tell us the model when you call, and we'll bring the right parts knowledge the first time. Same-day appointments, with 24-hour service for true emergencies.