Common Tankless Problems & Warning Signs
Inconsistent water temperature
Fluctuating hot/cold often points to heat exchanger issues, mineral buildup, or sensor problems.
Error codes and system failures
Ignition failure, venting blockages, flame failure, sensor malfunctions. We quickly decode what your system is telling you.
No hot water at all
Complete failure requiring emergency response. Whether ignition, electrical, or a faulty heating element, we get you running again.
Reduced flow rate
Sediment buildup or a clogged water filter restricting performance.
Higher utility bills
Scale buildup forces the unit to work harder, increasing energy costs without changes in usage.
Water leaks or gas smell — EMERGENCY
Safety hazards requiring immediate attention. Call (530) 588-9286 immediately.
Seeing any of these signs? Let's get it fixed.
Gas vs. Electric Tankless Repair
Gas models involve additional components: gas burner and ignition system, gas valve and pressure regulation, venting system, and flame sensors. Common issues include ignition failure, venting blockages, and gas pressure irregularities. All gas repairs include careful testing for leaks and proper combustion.
Electric models have their own considerations: heating elements that can fail (especially in hard water areas), electrical connections, and circuit requirements.
Both types share common issues: mineral buildup, water filter clogs, heat exchanger efficiency loss, and sensor failures. For hard water areas like Granite Bay and Lincoln, we often recommend water quality improvements.
Why Choose DKH Plumbing
Deep expertise with tankless systems — these aren't like traditional water heaters and require specialized knowledge. Honest diagnostics: if your unit can be repaired cost-effectively, we fix it; if replacement makes more sense, we'll tell you. We carry common parts on our trucks for same-day repairs. 24/7 emergency service without price-gouging for after-hours calls. Licensed (CSLB #1027450), bonded, and insured.
Ready to schedule your tankless repair?
Frequently Asked Questions
Service Areas
Nevada County:
- Grass Valley
- Nevada City
Placer County:
- Auburn
- Rocklin
- Roseville
- Loomis
- Granite Bay
- Lincoln