The Bosch Tronic TR4000C-3 Electric Tankless Water Heater, part number 7738007415, is a 3.5-kilowatt point-of-use electric tankless water heater designed to deliver a continuous on-demand supply of hot water at a single sink across a wide range of residential, commercial, and mobile applications, including residential sinks, apartments, RVs, mobile homes, boats, garages, warehouses, factories, stores, offices, restaurants, and hotels.
The TR4000C-3 features a solid copper heat exchanger with copper-sheathed elements housed in a compact and lightweight tough plastic enclosure weighing 3.4 pounds, providing flexible mounting options in installations where space is limited or the installation location changes.
The unit operates on 110 or 120-volt supply voltage on a single-pole 30-amp breaker with 10 AWG wiring, activates at a minimum flow rate of 0.55 gallons per minute, and connects to the water supply via ½-inch NPT fittings. With no storage tank, the TR4000C-3 eliminates standby heat loss entirely and delivers hot water on demand for the full duration of the draw without a tank capacity limit.
The unit's sophisticated thermostatic control system works in harmony with advanced flow sensor technology to maintain precise temperature control, eliminating unexpected temperature fluctuations. Installation is streamlined thanks to its space-saving design and straightforward wall-mounting system, making it perfect for tight spaces where traditional tank heaters wouldn't fit. The external temperature control knob allows for easy temperature adjustments without the need for complex programming or tools.
Built with Bosch's renowned German engineering, the Tronic 4000 C features durable heating elements and scale reduction technology that significantly extends the unit's operational life while minimizing maintenance requirements. The tankless design not only saves valuable space but also eliminates standby energy losses associated with traditional tank-style water heaters. This makes it an environmentally conscious choice for both residential and light commercial applications.
Whether installed in a guest bathroom, kitchen sink, or commercial hand-washing station, the Tronic 4000 C provides reliable, energy-efficient hot water delivery exactly where it's needed. Its minimal maintenance requirements, combined with consistent performance and energy savings, make it a cost-effective long-term solution for point-of-use water heating needs.
What's Included: Bosch Tronic TR4000C-3 electric tankless water heater unit with mounting hardware. A dedicated single-pole 30-amp hardwired electrical circuit using 10 AWG wire and all plumbing connections are not included and must be provided as part of the installation by a licensed electrician and plumber.
Installation Limits: The TR4000C-3 requires a dedicated single-pole 30-amp hardwired circuit wired with 10 AWG wire and must be installed by a licensed electrician in accordance with applicable local electrical and plumbing codes. The unit does not plug into a standard outlet. Working water pressure must be maintained between 7 and 115 psi. The TR4000C-3 serves one sink at a time and is not designed for simultaneous multi-fixture hot water delivery. Hot water output temperature is dependent on incoming cold water temperature — lower incoming water temperatures reduce the achievable output temperature at a given flow rate.
Compatibility: The Bosch Tronic TR4000C-3 (part number 7738007415) is confirmed as available at RuralEnergy.com and is positioned as a close functional replacement for legacy Bosch point-of-use electric tankless models including the Tronic 3000 US3. The TR4000C-3 cold water inlet is located at the bottom left and hot water outlet at the bottom right — note that this connection orientation is reversed from the legacy heaters it replaces, and plumbing connections must be verified and adjusted accordingly during installation.
