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5 Essential Tips for Tankless Water Heater Care from HEP Technicians

A homeowner in Johnson City faced a chilly surprise when their on-demand water heater stopped producing hot water and displayed an unfamiliar error code. A HEP technician investigated and discovered two small issues: a clogged sediment trap and a missing O-ring on a drain plug that was causing a slow leak. After cleaning the trap, replacing the O-ring, flushing years of buildup, and swapping a dribbling service valve, hot water flowed again—until corrosion inside the heat exchanger forced a warranty exchange of the unit.

Below are five simple tips to help you avoid similar headaches and keep your system running smoothly.

Tip 1: Clean or Replace Your Inlet Filter Regularly

Most tankless water heaters have a small filter on the cold-water inlet to trap debris. If it gets clogged, water flow drops and error codes can appear.

Homeowner take-away: Every few months, turn off the water supply, remove the filter, rinse off any buildup, and reinstall. Replace it if it looks worn.

Tip 2: Schedule an Annual Flush

Mineral deposits can accumulate over time, reducing efficiency and leading to pricey repairs. A professional flush removes scale and prolongs the life of your heater.

Insider advice: A HEP technician uses a pump, hoses, and a descaling solution. If it’s been a few years since your last service, book a flush to maintain peak performance.

Tip 3: Inspect Piping and Fittings

Leaky or corroded connections waste water and may damage your unit. High-quality materials like brass valves and flexible PEX piping ensure durability.

Pro-tip: Look under your heater for damp spots or rust. Any drip or discoloration around fittings means it’s time for a professional check-up.

Tip 4: Keep the Area Clean and Accessible

A clutter-free utility closet with good lighting helps both you and your technician. Easy access can speed up maintenance and emergency repairs.

Quick win: Store cleaning supplies on wall hooks and leave a clear path to your heater. You’ll cut down on service time and avoid accidental damage.

Tip 5: Don’t Ignore Persistent Error Codes

If the same warning keeps popping up or you suspect internal corrosion, call in the experts. Components like the heat exchanger may need deeper inspection or replacement.

In Johnson City, HEP technicians have the training and tools to diagnose complex issues and handle warranty exchanges smoothly. Don’t wait for a cold shower—reach out for professional help and keep your hot water flowing year-round.

Published on October 4, 2025