Error codes, cold water sandwich effect, ignition failures, or reduced flow — Downing Plumbing diagnoses and repairs tankless water heaters throughout Lake, Porter, and LaPorte County.
TANKLESS WATER HEATER REPAIR
Tankless water heaters are more complex than traditional tank units — they have flow sensors, heat exchangers, ignition systems, and circuit boards that can develop problems over time. Hard water scale buildup is one of the most common issues in Northwest Indiana, where water hardness is a real factor. Scale accumulates on the heat exchanger, reducing efficiency and eventually triggering error codes or preventing ignition entirely.
Downing Plumbing services all major brands of tankless water heaters including Rinnai, Navien, Noritz, Rheem, and others. We read error codes, test flow sensors and thermistors, diagnose ignition and gas supply issues, and perform descaling maintenance to restore efficiency. Most repairs can be completed in a single visit with parts on hand.
Annual descaling and preventive maintenance is strongly recommended for tankless units in Northwest Indiana — our water hardness shortens the interval between required service. We can set up a maintenance schedule to catch problems before they cause failure and extend the life of your investment.
WHAT WE REPAIR
Comprehensive tankless repair and maintenance for all major brands.
Don't let an error code go undiagnosed. Downing Plumbing repairs tankless water heaters throughout Northwest Indiana — call now.
HOW IT WORKS
Tankless units require specific knowledge and experience — we've got both.
We connect to the unit's diagnostic system, read active and stored error codes, and check flow rate, temperature, and ignition status.
We test flow sensors, thermistors, gas pressure, igniter operation, and the heat exchanger for scale buildup or blockage.
We replace faulty components or perform a descaling flush using citric acid to dissolve mineral scale from the heat exchanger.
We run the unit through a full heating cycle, verify flow rate at multiple fixtures, and confirm all error codes are cleared.
CUSTOMER REVIEWS
See what customers are saying about Downing Plumbing's professional plumbing, drain cleaning, sewer, and water heater services throughout Northwest Indiana.
"Exceptional service in an emergency situation! Incredible organization to deal with!!"
"Same day service. Knowledgeable craftsmen did excellent work. No complaints."
"The installation of my new water heater was done with courtesy and efficiency."
READY TO GET STARTED?
Whether you need drain cleaning, sewer repair, water heater service, sump pump repairs, or emergency plumbing help, Downing Plumbing is ready to help.
