When your tankless water heater stops delivering hot water, you need a technician who understands these advanced systems. At Dye Plumbing & Heating, we've been servicing tankless water heaters throughout La Porte, IN and Northwest Indiana since the technology first arrived in our market. Our technicians know these systems inside and out.
Tankless water heaters are sophisticated appliances with electronic controls, sensors, and precise combustion systems. When problems occur, accurate diagnosis requires specific knowledge that general plumbers often lack. We troubleshoot systematically, identifying root causes rather than just treating symptoms.
Tankless water heater problems? Our experienced technicians provide fast, accurate diagnosis and quality repairs for all major brands. We understand the unique challenges of Northwest Indiana's hard water conditions and how they affect tankless systems.
Ready to restore your hot water? Visit our contact page to schedule service or call us directly for urgent repairs.
Tankless water heaters are reliable but not trouble-free. Understanding common issues helps you recognize when professional service is needed.
Complete loss of hot water or intermittent hot water delivery indicating system failures.
Digital displays showing error codes that indicate specific system malfunctions.
Water temperature varies during use, creating uncomfortable hot and cold cycles.
Unit fails to ignite when hot water is demanded, preventing operation.
Mineral deposits reduce performance and efficiency, especially common in our hard water area.
Unusual sounds during operation indicating mechanical or combustion issues.
Tankless water heaters display error codes when problems occur. These codes indicate specific issues that our technicians interpret quickly, using them as starting points for systematic diagnosis.
We troubleshoot methodically rather than guessing, ensuring accurate diagnosis and effective repairs.
We explain what we find in terms you understand. Before making any repairs, you'll know:
We use manufacturer-specified parts and proven repair techniques. Tankless water heaters require precision—proper gas pressure, correct venting, and accurate sensor calibration all matter.
Scale buildup is the most common cause of tankless water heater problems in our area. When minerals accumulate inside the heat exchanger, efficiency drops and eventually the unit may fail to heat water adequately.
Regular descaling extends equipment life and maintains efficiency. We recommend annual descaling for most homes with hard water.
Ignition problems prevent your tankless unit from firing:
Hot surface igniters wear out over time and eventually fail to light the burner.
Dirty or failed flame sensors cause the unit to shut down as a safety measure.
Malfunctioning gas valves may fail to open or provide inconsistent gas flow.
Flow sensors tell the unit when hot water is needed. Malfunctioning sensors can cause:
We diagnose sensor problems accurately and replace as needed.
Venting problems trigger safety shutdowns:
Bird nests, debris, or ice can block exhaust venting.
Venting connections may work loose over time.
Some units are installed with improper venting that causes ongoing problems.
Circuit boards and electronic components may fail:
Electrical storms can damage sensitive electronics.
Electronic components have limited lifespans.
Some problems require recalibrating rather than replacing components.
We service all Navien tankless water heaters:
Our technicians understand Navien's specific diagnostic procedures and carry common replacement parts.
We service all Rinnai tankless water heaters:
We also service:
Our systematic diagnostic approach applies to any brand.
We provide honest assessments based on your specific situation.
Major plumbing and HVAC projects shouldn't be delayed because of budget concerns. We've partnered with Service Finance to offer flexible financing options that make essential home improvements accessible.
Upgrading to high-efficiency HVAC equipment can qualify you for valuable rebates and incentives. Our team stays current on available programs and will help you navigate the paperwork to maximize your savings. From manufacturer rebates to utility incentives, we'll ensure you don't leave money on the table.
Regular professional maintenance catches problems early:
Protecting your tankless water heater from scale is the most effective preventive measure. Options include:
From our headquarters at 1600 Lake Street in La Porte, IN, we serve homeowners and businesses throughout the region. Our local presence means faster response times, familiarity with area homes and building codes, and the accountability that comes from being your neighbors.
Dye Plumbing & Heating provides expert tankless water heater repair throughout La Porte, IN and Northwest Indiana. With 86+ years of plumbing expertise, we diagnose problems accurately and repair them properly.
Whether you're dealing with error codes, temperature fluctuations, or complete system failures, we're here to restore your hot water quickly and effectively.
What you get with us:
We troubleshoot methodically, identifying root causes rather than just treating symptoms.
Expert service for Navien, Rinnai, Rheem, Noritz, Bosch, and all other tankless brands.
Deep experience with scale-related issues common in Northwest Indiana's hard water conditions.
We explain problems and solutions in terms you understand, with upfront pricing.
Professional technicians with specialized training in tankless water heater systems.
Decades of plumbing expertise serving La Porte and Northwest Indiana communities.
Hours: Monday-Friday 7:00am-5:00pm | Saturday 7:30am-12:00pm
© Red Barn Media Group 2026
View Financing Options