130,000 BTU Condensing Tankless Water Heater

The RX130iN is Rinnai's condensing, natural-gas tankless water heater, sized for smaller households or a secondary hot-water load that wants continuous hot water without a storage tank. It installs indoors or outdoors and mounts to the wall.

Rated at 130,000 BTU maximum input (15,000 BTU minimum) and 0.97 UEF energy factor, it holds a first-hour rating of 228 gallons. Rinnai's spec sheet lists a maximum flow value of 7.1 without a stated unit; a qualified installer can confirm expected output at your incoming water temperature. The unit runs on 120-volt power, draws 47 watts, and is rated to 10,200 feet of altitude. The cabinet measures 30.11 inches high, 18.5 inches wide, and 11.4 inches deep, and weighs 54 pounds.

Installation is wall-mounted with a 2-inch minimum vent diameter, direct-vented up to 75 feet, and rated to a maximum working pressure of 150 PSI and 120°F. Digital controls and a digital temperature display are built in, and Smart Circ intelligent recirculation is available with an accessory pump kit. Outdoor installation requires the separately sold Versa Vent cap (Rinnai #RXOVC). A qualified installer should confirm clearances 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 natural-gas unit for 15 years (or 12,000 hours) on the heat exchanger, 5 years on parts, and 1 year on labor for residential use; commercial coverage is 8 years (or 12,000 hours), 5 years, and 1 year respectively.

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 wall-mounted unit is listed for indoor or outdoor placement. Plan the site around required clearances, service access, gas and water connections, condensate routing, and local code. Have a qualified installer confirm the location and connections before work begins.

• Venting Requirements

  The source lists 2-inch venting up to 75 feet and identifies an outdoor vent adapter or cap as sold separately. Confirm the approved vent layout, termination, clearances, and accessory requirements in the installation documentation before ordering materials.

• Natural Gas Supply

  This listing is the natural-gas configuration and ships as one fuel-specific variant. With 130,000 BTU maximum input, gas-line sizing and supply capacity are installer decisions. Verify natural-gas pressure, connections, and local code before installation.

• Flow and Temperature Rise

  The source lists a 0.13 GPM minimum flow rate and a maximum flow value of 7.1 without naming its unit. Actual hot-water delivery depends on temperature rise, incoming water conditions, fixture demand, and the installation.

• Controls and Recirculation

  Digital controls and a digital display support temperature adjustment at the unit. The source describes Bluetooth setup support and recirculation compatibility with a pump or pump accessory kit. Confirm the desired controls and pump configuration before planning the loop.

• Efficiency and Power

  Condensing technology and the source-listed 0.97 UEF energy factor support efficient operation, and the source marks Energy Star 5.0. The heater uses 120-volt power. Confirm electrical service and condensate handling with the installer.

• Flushing and Maintenance

  Quick Flush is described as simplified flushing, while lime detection is also listed. Water chemistry and use affect service needs, so follow the manual for flushing, descaling, cleaning, inspection, and maintenance records.

• Warranty Terms

  The source lists a limited warranty. Its detailed block describes residential coverage as 15 years or 12K hours on the heat exchanger, 5 years on parts, and 1 year on labor, with a separate commercial schedule. Verify the written warranty and registration timing.

• What Ships

  One included piece is listed in the box, but the source does not provide a complete box-contents inventory. The outdoor vent cap is sold separately. Confirm carton contents and any venting, condensate, isolation-valve, or recirculation accessories with your installer before scheduling work.

Good to know

• 30.11″ H × 18.5″ W × 11.4″ D; wall mounted.
• Natural-gas configuration; verify supply capacity, pressure, and line sizing.
• 2-inch venting is source-listed; confirm the approved layout and clearances.
• Professional installation is required for wall mounting, gas, venting, electrical, and condensate connections.
• Water heater only. Installation materials and other items shown are not included unless stated.