Dimakung FSA QC MEDLRG Flow Sensor for Ecosmart ECO 18/24/27/36 Tankless Water Heater – Replacement Part

Overview

Dimakung presents the FSA QC MEDLRG flow sensor as a targeted replacement part for popular Ecosmart tankless water heaters. When water begins to flow, the sensor signals the heater to start heating, helping you access hot water more promptly and with fewer interruptions during daily routines.

How it works

The sensor uses a precision circuit to measure flow with heightened sensitivity, enabling faster activation and stable operation. The copper conductors (24AWG/30V) provide solid electrical signaling and reliable thermal performance, supporting consistent heating even as temperatures rise during use.

• Faster heater response as demand changes
• Stable hot water supply with minimal fluctuation
• Durable copper wiring and rugged components for long-term use

Compatibility you can rely on

Designed to work with Ecosmart ECO 18, ECO 24, ECO 27, and ECO 36 models, the flow sensor installs with standard connectors using a plug-in approach. The design also notes compatibility with Rheem Retex-27 in select setups, broadening its applicability.

Design and installation

• Precision circuit board ensures accurate flow measurement and dependable activation
• Leak-proof construction and straightforward wiring for quick replacement
• Fits common connectors on compatible Ecosmart tankless heaters

In real-world use, this sensor can contribute to a smoother shower routine, quicker hot-water response when a faucet is opened, and a steadier supply during multi-point usage. While it is a replacement part—not a guaranteed performance improvement—upgrades of this type are often associated with a more on-demand hot water experience.

Note: If the LED display does not illuminate when water flows, installing a replacement flow sensor is a practical step to restore signaling and resume heating without extended downtime.