11.1 GPM 199,000 BTU Commercial Tankless Water Heater with Recirculation Pump

The CXP199iN is Rinnai's commercial, natural-gas tankless water heater with a built-in recirculation pump, designed for restaurants, hotels, and multi-family properties that need unlimited hot water from a compact combustion design. It is listed for indoor location, with indoor-to-outdoor conversion available using a separately sold outdoor vent cap.

It is rated for a maximum input of 199,000 BTU and a maximum flow of 11.1 GPM, with an energy factor of 0.98, operating between 98°F and 140°F. The unit runs on 120-volt power and draws 98 watts. The cabinet measures 30.11 inches high, 18.5 inches wide, and 11.4 inches deep, and weighs 58 pounds.

Installation is wall-mounted and requires professional service, with a 2-inch minimum vent diameter and a maximum water pressure of 150 PSI. The built-in recirculation pump is designed to deliver faster hot water at the faucet, and the unit carries Title 24 and Energy Star certification (including Energy Star Canada). A qualified installer should confirm clearances, gas-line sizing, and local code before installation.

This listing is for the water heater itself. Gas piping, electrical connections, mounting hardware, and venting materials are not included unless stated.

Rinnai's limited warranty covers this unit's heat exchanger for 15 years (or 12,000 hours), parts for 5 years, and labor for 1 year on residential use; commercial coverage is 8 years (or 12,000 hours) on the heat exchanger, 5 years on parts, and 1 year on labor.

Delivery and returns: this water heater ships free by ground delivery and arrives within the window shown above. If it is not the right fit, return it free within 30 days in its original packaging.

• Installation and Clearances

  This heater is designed for indoor, wall-mounted installation. A qualified professional should confirm the mounting surface, service access, required clearances, combustion air, condensate routing, and local code requirements before installation or commissioning.

• Venting Requirements

  Direct venting is required, and the source lists a 2-inch minimum vent diameter. The unit can convert between indoor and outdoor installation, but the outdoor vent cap is sold separately. Follow the current installation manual for the complete vent path and clearances.

• Natural Gas Supply

  This single-fuel configuration is natural gas, identified by the manufacturer part number CXP199iN. With 199,000 BTU maximum input and 15,000 BTU minimum input, the installer must verify gas pressure, connection details, and supply-line sizing for the site.

• Flow and Temperature Rise

  The source lists a maximum flow rate of 11.1 GPM and a minimum flow rate of 0.26 gallons per minute. Delivered hot-water flow depends on inlet temperature, required temperature rise, and simultaneous fixture demand, so use the current performance tables for sizing.

• Controls and Recirculation

  Digital controls and a digital display support setup and operation. The built-in recirculation pump is intended to help bring hot water to the faucet faster when needed. Plan the return loop, controls, and commissioning sequence with the installing professional.

• Efficiency and Power

  Condensing technology and a listed 0.98 Energy Factor support efficient operation. The heater uses 120-volt power and lists 98 watts. Confirm the electrical connection, condensate treatment, venting, and service requirements for the installation.

• Descaling and Maintenance

  The commercial design emphasizes serviceability, but the source does not publish a fixed descaling interval. Follow the current manual for flushing, descaling, inspection, and maintenance. Water chemistry, usage, and local conditions can affect how often service is needed.

• Warranty Terms

  The listed commercial warranty provides 8 years or 12,000 hours for the heat exchanger, 5 years for parts, and 1 year for labor. Residential terms list 15 years or 12,000 hours for the heat exchanger, 5 years for parts, and 1 year for labor. Terms are limited and should be confirmed in the current written warranty.

• What Ships

  The source identifies one tankless heater with a built-in recirculation pump, but it does not publish a complete box-contents list. The outdoor vent cap is sold separately. Confirm included components and required accessories before installation; installation materials are not assumed to ship with the heater.

Good to know

• 18.5″ W × 11.4″ D × 30.11″ H; wall mounted.
• Natural-gas configuration; verify gas pressure and supply-line sizing.
• Direct vent required; source lists a 2-inch minimum vent diameter.
• Professional installation is required for gas, venting, electrical, water, and condensate connections.
• Tankless water heater only. Installation materials, venting components, controls, and other items shown or required are not included unless explicitly stated.