Tankless Water Heater Bosch 9800 Series

Bosch’s Greentherm tankless water heaters provide whole-home hot water while featuring some of the best efficiency ratings on the market. Greentherm water heaters boast an impressive .99 Uniform Energy Factor, which allows them to meet your hot water needs while not draining your wallet. The 9000 series features Bosch’s plug n’ play design, making installation a breeze when paired with its multiple venting options. Optional Wi-Fi connectivity gives you complete control of your hot water at your fingertips.

Optiflow Management Technology

This water heater features Bosch’s Optiflow system, which uses self-calibrating sensors to automatically configure flue length, gas type, and altitude without a gas analyzer.

Easy to Install

Bosch Greentherm water heaters come with a flexible and compact plug n’ play design, top hyrdaulic connections, and bottom flush ports, making them perfect to replace old tank-type heaters.

Built-In Digital Control Panel

The Greentherm tankless hot water heaters have a digital control panel on the front of your unit to adjust temperature and to make sure your system is running properly.

Active Bypass

The Greentherm models all come with an automated, fully modulating bypass for temperature stability to ensure you have a constant, accurate temperature.

Convenient Gas Hook Up

The ability to use an existing 1/2″ gas line makes the Greentherm an ideal option for storage tank retrofits.

Optional Wi-Fi Control

Control your water heater with the push of a button using Bosch’s Wi-Fi app, available in the Apple Store and Google Play.