![Progressive AOS Hero 20210416](/sites/default/files/migrated/featured/Progressive-AOS-Hero_20210416.jpg?alternateWidths=/sites/default/files/styles/canvas_parametrized_width--%7Bwidth%7D/public/migrated/featured/Progressive-AOS-Hero_20210416.jpg.avif%3Fitok%3DGxHJPEQD) # Commercial Hot Water Boilers For large buildings, a boiler feeding storage tanks is often the most reliable way to deliver domestic hot water. Progressive designs, installs and services these systems as part of our commercial water heating specialty. [Call (877) 325-0180 ](tel:8773250180) [Schedule Online ](https://scheduler.servicetitan.com/book/eyJicmFuZElkIjoiYnJhbmRfcGN3OWUzNnM4bnZ5ZHBsNWU1Y3Z5YnU3Iiwic2NoZWR1bGVySWQiOiJzY2hlZF9uZWlyYzl6bDUyaDNmbjV3YzY0bXY4Y2sifQ%3D%3D) ## Breadcrumb 1. [Home](/) 2. Commercial Hot Water Boilers ## Domestic hot water boilers, not space heating This page covers boilers that make hot water for taps, showers, kitchens and laundries, usually paired with storage tanks or indirect water heaters. Boilers that heat the building itself through radiators, air handlers or radiant floors are a heating system, and our HVAC division covers them on the [commercial heating boilers](/commercial/hvac/heating/boilers) page. Many buildings have both, and Progressive services both under one agreement. ## Why a boiler-and-storage system When the load is large and continuous, a boiler with properly sized storage delivers stable temperature through the peak and recovers fast. It is the standard approach in hotels, hospitals, senior living, student housing, high-rise multifamily and commercial laundries, and it is straightforward to make redundant so a single failure never takes the building down. ## What Progressive does - Load calculation, boiler and storage sizing, and redundancy planning. - Installation of condensing and non-condensing hot water boilers, storage tanks, indirect heaters, pumps, mixing valves and controls. - Replacement of aging boilers, often with [high-efficiency condensing equipment](/commercial/plumbing/water-heaters/high-efficiency) that cuts gas use. - Maintenance agreements: combustion analysis, safety checks, water treatment, and inspection records for your files. - 24/7 repair, with [temporary hot water](/commercial/plumbing/water-heaters/temporary) available when a boiler is down for more than a few hours. ## Frequently asked questions What is the difference between a water heater and a hot water boiler?A water heater heats and usually stores potable water in one unit. A hot water boiler heats water (or a separate loop) that then heats potable water in storage tanks or an indirect heater. Boilers scale better for very large loads. Can one boiler do both domestic hot water and building heat?Some systems are designed that way. It requires the right controls and heat exchangers; we can evaluate whether a combined system makes sense for your building. Do you handle annual inspections and reports?Yes. Our maintenance agreements include the checks and the documentation most facilities need. **Call (877) 325-0180** or [request a proposal](/contact). Commercial plumbing crews are on call 24/7 across Raleigh, Durham and the Triangle. [ High-Efficiency Commercial Water Heaters If your building runs hot water all day, the fuel bill is the real cost of the heater. Condensing high-efficiency units recover heat that older systems send up the flue. Learn more →](/commercial/plumbing/water-heaters/high-efficiency)[ 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)[ Commercial Heating Boilers Hydronic boilers heat offices, schools, hospitals and plants through hot water loops, air handlers and radiant systems. Progressive installs, repairs and maintains them as part of our commercial heating service. Learn more →](/commercial/hvac/heating/boilers)[ 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)