Rinnai RUC98i Condensing Technology

Rinnai Ultra Series Tankless Water Heaters deliver innovation and technological leadership in condensing tankless water heating design. Providing homeowners with an endless supply of hot water, energy savings, a space saving design and environmental benefits, Rinnai offers ease of installation now with more venting options right out of the box. As the only manufacturer to offer both concentric and twin-pipe PVC venting, no adaptor is necessary to give you double the venting options on every installation.

Product Brochure

ULTRA SERIES: Tankless Water Heater

Delivering our most energy-efficient performance, the Ultra Series features a condensing design with two heat exchangers to maximize heating value to enhance reliability and durability and reduce maintenance.

Save money, splurge on performance.

Designed for efficiency: Rinnai’s tankless technology features copper heat exchangers to provide maximum efficiency and
uses up to 40 percent less energy* than a traditional tank.

Save energy: By operating only when hot water is needed, and no storage tank to heat and reheat water, our tankless
technology helps save on energy and utility costs. The use of an electronic ignition means no standing pilot light that constantly
uses energy.

A smart investment: Increase your home’s value with premium technology, increased energy efficiency, an improved Home
Energy Rating System (HERS) Index Score and optimized LEED certification. Available energy efficiency rebates and tax credits
offer the opportunity to help make your purchases more affordable.

Multiple sizes: Rinnai gives you options to right-size your installation and customize your efficiency.

Replace parts, not systems: Every part of a Rinnai Tankless Water Heater is replaceable. Components can be easily
exchanged, if needed, versus replacing the entire system.

Save space with a compact design.

Maximum output, minimum space: About the size of a small suitcase at 18.5” x 26” x 10” or smaller, these wall-mounted
models can be installed on interior or exterior walls and in compact spaces to free up valuable space.

Flexible installation: Small size allows for installation in non-traditional spaces such as crawl spaces and attics, making it
perfect for use in any size home, including manufactured and modular homes.

Stay green with a sustainable choice.

Earth-friendly efficiency: Our tankless technology achieves maximum energy efficiency, helping to conserve natural
resources.

Less waste: Compact heat exchanger design, longer product lifespan up to twice as long as a traditional tank** and recyclable
parts means less waste in landfills.

High standards for low emissions: Lower CO2 emissions contribute to cleaner air and a healthier environment.

UNIQUE FEATURES OF ULTRA SERIES:
  • Energy Factor of up to .96
  • ENERGY STAR®qualified
  • Available sizes:130,000, 152,000, 160,000, 180,000 and 199,000 BTU
  • Allows for either Concentric Polypropylene or dual-pipe PVC/CPVC venting,providing the most venting flexibility in a single application of any manufacturer.
  • Faster hot water provided by integrated recirculation pump and internal bypass line(RUR models) with or without a dedicated return line
  • Easy maintenance is achieved with included isolation valves
  • Wi-Fi Ready