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Tankless Water Heater Installation in Rockwall, TX

August 18, 2026 · Rockwall, TX · Completed by Evan

This is one of 9 water heater jobs Larry's Plumbing has completed in Rockwall, TX. See all 9 jobs →

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Job location: Rockwall, TX

A residential tankless water heater required repair after its hot side isolation valve failed. The technician replaced both hot and cold side isolation valves and performed a chemical descale flush of the unit. All components were tested for proper operation and verified working correctly.

Key Facts

We were called out for a broken knob on a tankless water heater. Upon arrival, we inspected the heater and determined it was the hot side isolation valve. While discussing next steps with the customer, the customer expressed interest in flushing the tankless heater as well. After approval for both the rebuild and flush, we removed the old hot and cold side isolation valves and threaded on new hot and cold valves. We then used a chemical descale to flush the tankless heater and checked all connections for proper operation. Pictures attached.


Service area: Rockwall, Royse City, Rowlett, Garland, Plano, Highland Park, University Park

Hours: Available 24/7 — no overtime charges

Licensed: TX Master Plumber #41106. Fully licensed and insured.

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Contact: (214) 729-3586

Serving customers since 1970.

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