Rinnai America

What Rinnai America does

Rinnai America Corporation is the North American subsidiary of Japan's Rinnai Corporation, headquartered in Peachtree City, Georgia, and operating in the residential, commercial, and professional trade segments. The company's core offering centers on tankless (on-demand) water heating technology, supplemented by a fuel-agnostic portfolio that includes electric heat pump water heaters (REHP Series), condensing boilers (I-SERIES+ residential, RCB-Series commercial up to 1 million BTU), direct vent heaters, and vent-free fan convectors. Technical differentiators include the Smart Sense Adaptive Gas Valve on I-SERIES+ boilers, Smart-Circ intelligent recirculation, up to 0.98 UEF on SENSEI RX tankless units, and up to 4.0 UEF on REHP heat pumps meeting NEEA Tier 4. Connected functionality is delivered through the Rinnai Central mobile application.

Rinnai generates revenue primarily through hardware sales — tankless water heaters, electric water heaters, boilers, and accessories — across residential and commercial end-markets. Distribution is hybrid: a nationwide network of certified PRO (professional) installers anchors warranty-validated sales, complemented by authorized dealers/wholesale distributors for the contractor channel, direct e-commerce via Rinnai.us for parts and accessories, and a new 306,000-square-foot build-to-suit manufacturing and distribution facility in Griffin, Georgia, opened in April 2026, enabling next-day delivery to approximately 25% of the U.S. population. The customer base spans three primary segments — homeowners seeking efficient on-demand hot water, commercial projects requiring high-volume hot water and space heating, and trade professionals who install and service the products.

The go-to-market is sales-led and channel-driven, with event activation at industry shows such as the International Builders' Show, rebate and financing programs to drive demand, training and certification infrastructure to support PRO installers, and policy-aware product strategy (hybrid gas/electric, condensing) to navigate regional regulatory variation. Rinnai America sits among five key vendors identified as dominating the U.S. water heater market (USD 3.45 billion in 2023), with commercial and multifamily segments described as the fastest-growing business areas and the October 2026 DOE commercial water heater regulations expected to favor its condensing portfolio.

Name

Rinnai America

Legal name

Rinnai America Corporation

Website

https://rinnai.us

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Rinnai America Corporation, the North American subsidiary of Japan's Rinnai Corporation, designs and distributes tankless water heaters, electric heat pump water heaters, and condensing boilers for residential, commercial, and trade-professional customers across the U.S., selling primarily through a certified PRO installer network and authorized dealers.

Ownership category

akta.pro rank

Product category

Tankless Water Heaters

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

akta.pro secondary industries

Tankless Water Heater Installation & Service (HSAOACAB), Water Heating & Treatment Appliance Retail (Water Heaters, Water Softeners, Filtration Systems) (CRACACAF)

Keywords

• Tankless water heaters
• Condensing boilers
• Electric heat pump water heaters
• Residential heating solutions
• Commercial water heating

Headquarters

HQ city

Peachtree City

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Water Heater Sales: Rinnai generates primary revenue through the sale of tankless water heaters, electric water heaters, and related products to residential and commercial customers through their PRO installer network.
2. Boiler Sales: Sale of condensing boilers, direct vent heaters, vent-free fan convectors, and commercial boilers for home heating and commercial applications.
3. Professional Services: Revenue generated through partnerships with certified PRO installers who provide installation services. The company supports this ecosystem through training programs, warranty services, and parts distribution.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels6 records

Core offering

Rinnai America designs, manufactures, and distributes tankless (on-demand) water heaters, condensing boilers, electric heat pump water heaters, direct vent heaters, and vent-free fan convectors for residential and commercial applications. The company sells its products through a nationwide network of certified PRO installers, authorized dealers, and direct e-commerce channels for parts and accessories. Its portfolio spans gas and electric, fuel-agnostic options for both new construction and replacement projects.

Product overview

Rinnai America offers a comprehensive portfolio of water and home heating products centered around tankless water heater technology. The core product line includes gas tankless water heaters (available in condensing and non-condensing models across the RX, RXP, RUS, RUCS, RE, REP, and V series), supplemented by electric heat pump water heaters (REHP Series) for fuel-agnostic installations. Home heating products include the I-SERIES+ condensing boiler (available in both combi and solo models), direct vent heaters, and vent-free fan convectors. The commercial portfolio includes tankless water heaters, rack systems, Demand Duo hybrid systems, RCW series, RCET electric water heaters, and RCB commercial boilers with capacities up to 1 million BTUs. Accessories include the Rinnai Central mobile app and Smart-Circ recirculation systems. The company positions itself as offering complete comfort solutions spanning residential, commercial, and professional segments.

Differentiator

Problem solved

Functional benefit

Brands

• SENSEI RX: Tankless water heater series with advanced efficiency and smart technology features
• I-SERIES+
• Demand Duo Hybrid
• Rinnai Central
• Smart-Circ

Products and services

• Tankless Water Heaters (Residential) Rinnai's industry-leading residential gas tankless water heaters provide on-demand hot water without a storage tank. Available in condensing models (RX, RXP, RUS, RUCS series) and non-condensing models (RE, REP, V series), targeting homeowners seeking efficient, space-saving water heating.
• REHP Series Electric Heat Pump Water Heater Rinnai's electric heat pump water heater providing a fuel-agnostic residential water heating alternative. Meets NEEA Tier 4 standards with up to 4.0 UEF efficiency and features five operating modes, variable speed fan operation, and demand response capability. Won the 2026 Green GOOD DESIGN Award.
• I-SERIES+ Condensing Boiler A condensing boiler that provides simultaneous delivery of domestic hot water and space heating for residential applications. Available in combination (combi) and heat-only (solo) models with capacities from 60K to 199K BTU, featuring 96% AFUE efficiency and Smart Sense Adaptive Gas Valve technology.
• Direct Vent Wall Heater (EnergySaver) Residential wall furnace providing consistent, even heat by constantly monitoring room temperature and responding to small temperature fluctuations. Designed for zoned residential heating without ductwork.
• Vent-Free Fan Convectors Residential home heating products that provide efficient warmth without requiring external venting, suitable for spaces where conventional venting is impractical.
• Commercial Tankless Water Heaters Commercial-grade tankless water heaters designed to support commercial projects of any size, including wall-hung configurations for high-demand commercial applications.
• Tankless Rack Systems Rack-mounted commercial tankless solutions designed for large-scale commercial hot water applications requiring redundancy and high capacity.
• Demand Duo Hybrid A hybrid commercial water heating solution combining tankless technology with storage to meet fluctuating high-volume hot water demand.
• RCW Series Commercial Water Heaters Commercial water heating products in the RCW series for commercial applications.
• RCET Series Commercial Electric Water Heating Commercial electric tank and water heating solutions for commercial projects requiring electric-only configurations.
• RCB-Series Commercial Boiler Wall-hung and floor-standing commercial boilers with capacities up to 1 million BTUs, engineered for large-scale commercial heating and hot water applications.
• RHPC Heat Pump Companion Kit A companion product developed in partnership with the Propane Education & Research Council, designed to work alongside heat pump water heaters by combining propane tankless technology with heat pump systems for flexible, high-efficiency hybrid installations.
• SENSEI RX Tankless Water Heaters Updated tankless water heater series featuring advanced efficiency with up to 0.98 Uniform Energy Factor ratings, smart technology features, and rebate eligibility. Launched/featured at IBS 2026.
• Rinnai Central Mobile App Mobile application for controlling and monitoring Rinnai tankless water heaters remotely, enabling smart connectivity, scheduling, and diagnostics for end users.

Quantifiable outcome

• Energy efficiency up to 4.0 UEF
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• Propane Education & Research Council (PERC)coreStrategic or Co-development Partner · 11 February 2026Rinnai developed the RHPC Heat Pump Companion Kit in partnership with the Propane Education & Research Council. This partnership supports Rinnai's hybrid product strategy by combining propane tankless technology with heat pump systems, offering consumers flexible fuel options while meeting high efficiency standards.
• PNK GroupcoreOthers · 1 August 2025PNK Group completed construction of a 306,000-square-foot build-to-suit manufacturing and distribution facility for Rinnai in Griffin, Georgia. The facility was constructed using PNK Group's proprietary Building Assembly Set technology with prefabricated components from its Georgia and Pennsylvania factories. Grand opening held in late April 2026.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• State Water Heaters (State Industries): State Water Heaters is an established US water heater manufacturer offering residential and commercial tank and tankless products through the same plumbing wholesale and PRO distribution channels that Rinnai services.
• Bradford White Corporation: Bradford White is an established US water heater manufacturer with tank, tankless, and commercial offerings sold primarily through plumbing wholesalers; it competes with Rinnai in replacement and new-construction channels and is among the five dominant US water heater vendors.
• AO Smith Corporation: AO Smith is a leading broad-line US water heater manufacturer with significant tank, tankless, heat pump, and commercial offerings; it competes directly with Rinnai in residential and commercial categories and is identified alongside Rinnai as one of the five key US water heater vendors.
• Rheem Manufacturing Company: Rheem is a major incumbent US manufacturer of water heaters, boilers, and HVAC equipment with a broad tank, tankless, and heat pump line; it overlaps with Rinnai across residential and commercial water heating and competes for PRO installer mindshare.

Direct peers

• Bosch Thermotechnology: Bosch Thermotechnology produces residential and commercial tankless water heaters and condensing boilers in North America, directly overlapping with Rinnai's condensing tankless, combi boiler, and heat pump water heater portfolio.
• EcoSmart: EcoSmart is a tankless electric water heater brand competing in the same on-demand, energy-efficient water heating category as Rinnai's residential tankless electric offerings and adjacent to the REHP electric heat pump line.
• Lochinvar: Lochinvar is a US-based manufacturer of high-efficiency commercial boilers and water heaters competing directly with Rinnai's I-SERIES+ and RCB-Series lines in the same commercial condensing boiler and water heating specification process.
• Weil-McLain: Weil-McLain is a US-focused hydronic boiler manufacturer with condensing commercial and residential boiler lines, directly comparable to Rinnai's I-SERIES+ condensing combi and RCB-Series commercial boiler offerings for the same contractor and mechanical-spec channels.
• Navien: Navien is the most direct head-to-head competitor to Rinnai in the North American condensing tankless water heater market, offering a parallel portfolio of high-efficiency gas tankless units targeting the same PRO installer channel and multifamily/light-commercial specs.

Emerging players

• Heat Pump Water Heater (HPWH) emerging brands (e.g., Rheem / AO Smith HPWH lines are incumbent; emerging direct peers in HP-only niche include brands like Calpak): Emerging heat-pump-only water heater specialists and new electrified entrants are competing with Rinnai's REHP electric heat pump water heater line in jurisdictions pushing all-electric new construction, representing a strategically important but narrower competitive set than broad incumbents.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Rinnai
• YouTubeyoutube.com/user/rinnaivideos
• Facebookfacebook.com/rinnaitankless
• LinkedInlinkedin.com/company/rinnai

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Rinnai America