Tankless Water Heater
Repair & Installation in Rockwall, TX
Error codes, no hot water on demand, or scale buildup reducing efficiency — Elite Home Services diagnoses and repairs tankless water heaters across Rockwall. We also handle new installations and conversions from tank units.
Services We Provide
Error Code Diagnosis
Error codes read and traced to the specific component causing the fault.
Descaling Service
Heat exchanger descaled to remove mineral deposits from Rockwall hard water.
Ignition & Flame Sensor Repair
Ignition failures and flame sensor issues diagnosed and corrected for reliable hot water.
Flow Sensor Repair
Flow sensor faults that prevent the unit from firing correctly diagnosed and repaired.
New Installation
Properly sized and installed unit with correct gas line, venting, and startup testing.
Tank to Tankless Conversion
Retrofit installation with gas line sizing, venting changes, and full connection.
Signs You Need Help
Error code displayed on the unit — Most codes point to a specific component — we read and diagnose before replacing anything.
No hot water or lukewarm water on demand — Ignition failure, flow sensor issue, or scale-blocked heat exchanger.
Hot water fluctuates during use — Flow sensor, gas pressure, or venting issue affecting consistent firing.
Unit runs but water is not getting hot enough — Scale buildup on heat exchanger reducing efficiency.
Unit has not been descaled in over a year — In Rockwall hard water, annual descaling is essential maintenance.
Considering switching from a tank water heater — Conversion involves gas line sizing, venting, and proper unit selection.
Our Process
Diagnose
We read error codes, test components, and identify the specific cause — not just the symptom.
Repair or Install
Component replaced or unit installed correctly, including gas line and venting checks.
Test
Unit fired and tested for proper temperature, consistent output, and no error codes.
Important Details
Annual Descaling Is Essential
Rockwall hard water leaves mineral deposits in the heat exchanger that reduce efficiency and eventually cause failure. Annual descaling with a citric acid or vinegar flush is the most important maintenance for a tankless unit here.
Error Codes Before Parts
We read error codes before ordering parts. Most tankless units have specific codes that point to the failing component — a proper diagnosis saves you from replacing parts that are not the problem.
Sizing for Your Household
A tankless unit sized too small cannot keep up with simultaneous demand — showers, dishwasher, and laundry at once. We calculate your peak demand before recommending a unit size.
Gas Line and Venting Requirements
Tankless water heaters have higher BTU input than tank units. The existing gas line must be sized to supply that demand. Venting also changes from tank to tankless. We check both before any installation.
Same-Day Tankless Water Heater Service
Call and describe the problem — same-day repair or service may be available.
Frequently Asked Questions
What are the advantages of a tankless water heater?
Do tankless water heaters need maintenance in Rockwall?
Can I switch from a tank to a tankless water heater?
Why is my tankless unit throwing an error code?
What Rockwall Homeowners Say
“Tankless unit throwing an error code every morning. Elite diagnosed a scale-blocked heat exchanger, descaled it, and the code cleared. Explained why annual descaling matters here. Excellent.”
“Converted from a tank to a tankless water heater. Elite sized it for our household, handled the gas line and venting, and tested everything before leaving. Endless hot water now.”
Related Plumbing Services
Serving Rockwall & Surrounding Areas
We provide this service throughout Rockwall County and the surrounding communities.