76% under what the other stores charge
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The RXP199i is Rinnai's high-capacity condensing tankless water heater, rated at 199,000 BTU/h and up to 11.1 GPM. It has a built-in recirculation pump with Smart-Circ, which learns your hot water habits and keeps a loop warm so taps run hot faster. Condensing operation reaches up to 0.98 UEF, among the most efficient gas tankless units sold. It suits large homes and light commercial spaces with several fixtures running at once; smaller households pay for capacity they will not use, and the wide 2-inch venting and gas line requirements make installation a licensed-plumber job.
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Lowest price we've seen: $2,067.80 on Nov 10 at Lowe's. Tracked across 3 stores since Nov 10.
Owners and installers treat the RXP199i as a serious high-demand unit: strong hot water delivery, real efficiency gains and a recirculation pump that cuts wait times. Complaints center on installation cost and complexity, not performance.
Product Description
The RINNAI RXP199I is a condensing tankless water heater rated at 199,000 BTU/h with a Uniform Energy Factor (UEF) of 0.96. This unit heats water on demand, eliminating standby heat loss associated with traditional tank-style heaters. It includes an integrated recirculation pump, which reduces wait time for hot water at the point of use. The RXP199I is suited for commercial and high-demand residential applications where a single, high-capacity unit must supply multiple fixtures simultaneously. Licensed plumbers and mechanical contractors are the typical installers for this class of equipment.
The RXP199I is designed for high-demand hot water applications including multi-unit residential buildings, light commercial facilities, and large single-family homes with elevated simultaneous draw requirements. The integrated pump supports recirculation loop installations, making it well suited for buildings where long pipe runs create unacceptable hot-water wait times. Natural gas or propane fuel type should be confirmed against the specific model variant prior to installation.
Key Features
• 199,000 BTU/h input capacity for high-demand hot water delivery
• 0.96 UEF condensing efficiency rating reduces operating costs
• Integrated recirculation pump supports recirculation loop configurations
• Tankless on-demand design eliminates standby heat loss
• Condensing operation extracts additional heat from flue gases for improved efficiency
Compatibility
Designed as an OEM condensing tankless water heater unit in the RINNAI RXP Series product line. Verify fuel type, venting category, and gas supply requirements against the installation site before ordering.
Installation Notes
Installation must be performed by a licensed plumber or mechanical contractor in accordance with local plumbing codes and the manufacturer's installation manual. Shut off the gas supply and cold water inlet before beginning any connection work. Condensing units require proper condensate drainage; ensure a code-compliant drain is accessible at the install location. Venting must comply with applicable codes and the manufacturer's specified vent category and material requirements.
Technical Specifications
Input Capacity : 199,000 BTU/h
Uniform Energy Factor (UEF) : 0.96
Recirculation Pump : Included
Heater Type : Condensing Tankless
Standard Information
Brand : RINNAI
Manufacturer Part Number : RXP199I
