![Tankless Water Heaters](/sites/default/files/migrated/featured/tankless-water-heaters.jpg?alternateWidths=/sites/default/files/styles/canvas_parametrized_width--%7Bwidth%7D/public/migrated/featured/tankless-water-heaters.jpg.avif%3Fitok%3DtdiuYWIa) # Rinnai Commercial Tankless Water Heaters Rinnai commercial tankless units, singly or in manifolded racks, give restaurants, hotels and multifamily buildings endless hot water from a fraction of the floor space. Book in under 2 minutes Pick a service and a time that works for you. Plumbing Heating Air Electric Continue Prefer to talk? [Call (877) 325-0180](tel:8773250180) ## Breadcrumb 1. [Home](/) 2. Rinnai Commercial Tankless Water Heaters ## Rinnai in commercial buildings Rinnai is one of the two tankless brands we install most, and for commercial work its strength is scalability: multiple units can be manifolded and controlled as one system, firing only the units the demand needs. Condensing models vent in PVC and recover heat from the flue, which keeps fuel costs down on buildings that run hot water all day. ## What Progressive installs - Single-unit installations for smaller kitchens, salons, offices and point-of-use loads. - Racked, manifolded systems with cascade controls for restaurants, hotels and apartment buildings. - Recirculation, water treatment, gas piping and venting sized for the combined system. ## Service Tankless units need periodic descaling to hold their rated output, and Rinnai systems report faults with error codes our plumbers know. We maintain and repair Rinnai commercial units whether or not we installed them. ## Frequently asked questions How many Rinnai units does a restaurant need?It depends on peak flow and incoming water temperature. We calculate it from your fixtures and dishwashing load and size the rack with headroom. Rinnai or Noritz?Both are excellent commercial tankless lines. We recommend based on capacity, venting, controls and parts availability for your specific project. **Call (877) 325-0180** or [request a proposal](/contact). Commercial plumbing crews are on call 24/7 across Raleigh, Durham and the Triangle. [ Commercial Tankless Water Heaters Endless hot water without a room full of tanks. Progressive designs, installs and services commercial tankless systems, from a single unit behind a kitchen to racked banks serving a whole hotel. Learn more →](/commercial/plumbing/water-heaters/tankless)[ Noritz Commercial Tankless Water Heaters Noritz commercial tankless systems deliver high-volume hot water for kitchens, hospitality and multifamily buildings, installed and serviced by Progressive. Learn more →](/commercial/plumbing/water-heaters/brands/noritz)[ Commercial Water Heaters Hot water is not optional in a restaurant, hotel, clinic or apartment building. Progressive has specialized in commercial water heaters since 1983: sizing, installation, repair, maintenance agreements and same-day replacement, with temporary units when you cannot wait. Learn more →](/commercial/plumbing/water-heaters) ### Need an expert today? Same-day service. Flat-rate pricing. Licensed, background-checked technicians. [Call (877) 325-0180](tel:8773250180) [Book Online Now](/webform/book_online/share) ### Facility down? We answer 24/7. Commercial plumbing, HVAC and electrical crews under one roof. Emergency response any hour; maintenance agreements that prevent the next call. [Call (877) 325-0180](tel:8773250180) [Book Online Now](/webform/book_online/share) ### Commercial Plumbing Services - [Water Heaters](/commercial/plumbing/water-heaters) - [Pipe Lining](/commercial/plumbing/pipe-lining) - [Backflow Certification](/commercial/plumbing/backflow-device-certification) - [Sewer Main Repair](/commercial/plumbing/sewer-mains) - [Drain Cleaning](/commercial/plumbing/drain-cleaning) - [Grease Traps](/commercial/plumbing/grease-traps) - [All Commercial Plumbing →](/commercial/plumbing) View more (3) Special offer ### Financing available! Comfort now, pay later. [See details](/promotions) Maintenance agreements ### Scheduled service keeps your building off the emergency list Planned HVAC, plumbing and electrical maintenance for facilities, property managers and businesses. [Ask about an agreement](/contact) Reviews ## Trusted by your neighbors - Review from T. Craig D., Chapel Hill T. Craig D., Chapel Hill ★★★★★ I just wanted to send a note thanking Dwayne Sandy for his careful work while installing my water line and interior plumbing fixtures. … Many thanks for the timely and professional work. - Review from Joshua N. Joshua N. ★★★★★ These two gentlemen in my opinion are great assets to your organization and represent it well. We look forward to a continued relationship with Progressive for all our plumbing needs. - Review from Bhanu Das Bhanu Das ★★★★★ Joe Oliveira stopped by my home, took time to understand the problem that I was having with the unit, went back and discussed the issue with his team of experts and had a detailed work order sent to me with in a day. … Based on the experience that I have had with Progressive Plumbing, Heating & Air, Electrical, I will HIGHLY recommend them for HVAC install and maintenance. ## Serving the Triangle and beyond [All service areas →](/service-areas) - [Apex](/service-areas/apex) - [Cary](/service-areas/cary) - [Chapel Hill](/service-areas/chapel-hill) - [Clayton](/service-areas/clayton) - [Durham](/service-areas/durham) - [Fuquay-Varina](/service-areas/fuquay-varina) - [Garner](/service-areas/garner) - [Holly Springs](/service-areas/holly-springs) - [Knightdale](/service-areas/knightdale) - [Morrisville](/service-areas/morrisville) - [Raleigh](/service-areas/raleigh) - [Rolesville](/service-areas/rolesville) - [Wake Forest](/service-areas/wake-forest) - [Wendell](/service-areas/wendell) - [Zebulon](/service-areas/zebulon) ## Day or night, call Progressive. 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