![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.



 [Call (877) 325-0180 ](tel:8773250180) [Schedule Online ](https://scheduler.servicetitan.com/book/eyJicmFuZElkIjoiYnJhbmRfcGN3OWUzNnM4bnZ5ZHBsNWU1Y3Z5YnU3Iiwic2NoZWR1bGVySWQiOiJzY2hlZF9uZWlyYzl6bDUyaDNmbjV3YzY0bXY4Y2sifQ%3D%3D) 

 





 

 

 

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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) [Request a Callback](/contact)

 

 



### 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) [Request a Proposal](/contact)

 

 



 ### 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

### New systems from $85/mo with approved credit

 [See details](/promotions) 

 [ ![Pink piggy bank beside clipboard and calculator, with outdoor AC unit and people on patio](/sites/default/files/2026-06/financing-bg-image.png?alternateWidths=/sites/default/files/styles/canvas_parametrized_width--%7Bwidth%7D/public/2026-06/financing-bg-image.png.avif%3Fitok%3D4vOG4lWu)

### Financing Available

Comfort Now, Pay Later

 

 ](/financing) 

 

 



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 Ashley S., Durham
    
    
    
    ### Ashley S., Durham
    
    
    
    ★★★★★
    
    
    
    
    
    
    
    I called Progressive because of storm/tree damage, which took out both my power and caused my water main to burst. Progressive could do both. From my initial call to the arrival of the electrician and plumber, I couldn’t have been more pleased. … I would use them again and highly recommend them for your ‘mechanical’ needs.
- ### Review from Wendy L.
    
    
    
    ### Wendy L.
    
    
    
    ★★★★★
    
    
    
    
    
    
    
    Everything was taken care of today. They were just amazing. They got everything done real quick, no mess, real polite. They were just awesome. … The best news we’ve had since we’ve moved into this house.
- ### Review from Lee & George H., Wake Forest
    
    
    
    ### Lee & George H., Wake Forest
    
    
    
    ★★★★★
    
    
    
    
    
    
    
    We really appreciate the extra time, phone calls to the supplier, and careful reading of the instructions to do the job right. Gilbert expressed his philosophy as ‘doing the job the way he would want it done in his own home.’ Once again, we are most pleased with the professional and courteous service your company provides.
 


 

 



 

 

 

 



 

## 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. 

 [(877) 325-0180 ](tel:8773250180)