Our History
1926
A Company Is Born
With a single truck, Denny Bell founded University Park Plumbing & Heating Co. in 1926, laying the groundwork for a service-first company built on reliability, hard work, and trust within the local community.
1933
Raising the Standard of Service
In 1933, Denny Bell earned his Master Plumber’s License, reinforcing the company’s dedication to professional excellence, proper craftsmanship, and the highest standards in plumbing service for the community.
1943
A Legacy Takes Shape
In 1943, Denny Bell assumed the name of his father’s plumbing business, originally founded in 1908 and officially became Bell Plumbing and Heating Co. With the addition of an office and product showroom, the company expanded its presence and gave customers a hands-on way to explore trusted plumbing and heating solutions.
1946
Industry Leadership Recognized
In 1946, Denny Bell was elected President of the Colorado Association of Plumbing, Heating, and Cooling Contractors, a testament to his leadership, expertise, and influence within the growing trades industry.
1947
Officially Incorporated
Bell Plumbing and Heating Company was formally incorporated in the State of Colorado in 1947, marking a major milestone leading to long-term growth, structure, and stability for the business.
1949
Supporting Landmark Projects
Bell played a role in local infrastructure by installing refrigeration lines for the University of Denver Ice Arena, showcasing the company’s expanding technical capabilities beyond residential work.
1950
Expanding With Denver’s Growth
As Denver experienced a post-World War II housing boom, Bell expanded its services to include residential upgrades and custom cabinetry—helping homeowners modernize and improve their living spaces.
1955
A Regional Industry Leader
By 1955, Bell had grown into one of the largest plumbing and heating contractors west of the Mississippi River, proudly serving more than 10,000 active customer accounts.
1959
Commercial Construction Takes Off
While residential service remained a core offering, Bell expanded into commercial construction as demand grew, broadening the company’s expertise and project scope.
1963
Innovation Meets Public Trust
Bell donated the first garbage disposal to the Colorado Governor’s Mansion, helping demonstrate the safety and practicality of the technology at a time when it was not yet widely accepted.
1965
Serving During Crisis
Following the devastating South Platte River floods—the most destructive flood in Colorado history—Bell assisted with restoration efforts, reinforcing its commitment to the community during times of need.
1976
A New Generation of Leadership
Larry Bell served as President of the Colorado Association of Plumbing, Heating, and Cooling Contractors, continuing the family tradition of leadership within the industry.
1998
Entering the Digital Age
Bell launched its first website in 1998, embracing new technology to better connect with customers and share information in an increasingly digital world.
1999
Strategic Focus Shift
In 1999, Bell made the strategic decision to shut down its new construction division, allowing the company to refocus on service-driven operations and customer care.
2001
Making Way for Progress
Bell’s longtime office at 4201 E. Evans Avenue was acquired through eminent domain as part of the T-REX light rail project, alongside more than 200 surrounding properties.
2002
A New Home for the Future
Bell relocated to a 43,000-square-foot facility in Aurora, a former lumber yard that provided space for installation materials, fleet operations, and a retail showroom.
2020
Evolving How We Serve Customers
Bell moved to a new location and closed its retail showroom to focus entirely on in-home consultations, aligning with changing customer preferences and service needs.
2025
Blending Technology With Personal Service
In 2025, Bell introduced AI-powered tools to streamline scheduling and deliver faster customer support—while continuing to maintain a fully staffed, in-house team to ensure every customer still speaks with a real person.
A Century of Bell Stories
For 100 years, Bell Plumbing, Heating, Cooling & Electrical has been woven into the homes, stories, and everyday moments of Denver. Our history isn’t just about the services we provide — it’s about the people we’ve met, the families we’ve supported, and the memories we’ve been fortunate to be a part of.
As we celebrate a century of serving this community, we’d love to hear your Bell story. Whether it’s a favorite experience, a meaningful moment, or simply a memory tied to life in Denver, your stories help continue a legacy built as much on people as on plumbing.
Fill out this form to tell us your favorite Bell moment!
You Can Expect the Best from Bell
We stand behind every job with straightforward promises—because your home deserves service you can count on.
Legacy of Quality Service
Bell has been Denver’s leading home services company since 1926. But the number we’re most proud of isn’t the years — it’s the customers who’ve been with us for decades, and the ones who call us because their parents did.
When You Need Us, We’re There
Furnace out Sunday morning? We were there within the hour. Called at 9am? Technician by noon. Same-day service is what our customers have come to count on for nearly a century.
Honest, Fair Pricing
You don’t want to be oversold. That’s why we quote prices after assessing the work first-hand and offer flat-rate pricing.
Transparency First
Before any work begins, we walk you through what we found, what it means, and what your options are. You approve the price before we pick up a tool. No surprises.
What Makes the Best Heating and Cooling Company in Denver
A century of service is a milestone worth celebrating, and it’s even more remarkable when a company has spent those 100 years serving the same community while maintaining a private ownership structure. But what stands out most for Bell Plumbing, Heating, Cooling, and Electrical isn’t the number of years; it’s the people behind those years, like the Denver homeowners who trusted Bell with their home and the employees who showed up with skill and care. It’s also the community partners who helped Bell grow along the way.
100 Years of Helping Homeowners Make Confident Decisions
An older woman living alone in the Denver area needed emergency air conditioning repair. She was scared and desperate. She told the virtual assistant at Bell Plumbing, Heating, Cooling & Electrical that she had a lung disease, and her A/C was a vital necessity.
Bell Reflects on Historic Denver Events That Shaped the City
In 2001, the team at Bell Plumbing, Heating, Cooling & Electrical watched a piece of their own history come down brick by brick. The company’s longtime headquarters on East Evans Avenue — a Denver landmark for nearly half a century — was demolished to make way for the T-REX expansion of Interstate 25 and the Southeast Light Rail line. For many businesses, losing a home that defined them for decades may have felt like starting over.
Bell Reflects on Historic Denver Events That Shaped the City
For a century, Bell Plumbing, Heating, Cooling & Electrical has been serving homeowners through some of the most historic Denver events the city has ever experienced.
Since 1926, the company has been a part of the city’s growth from a “wild-west frontier city” of fewer than 300,000 residents into a thriving metro area of more than 3 million people. Bell has witnessed neighborhoods expand beyond downtown and watched iconic Denver landmarks rise from the ground.
A Century of Air Conditioning Repair Denver Can Count On
For 100 years, Bell Plumbing, Heating, Cooling & Electrical has been showing up for Denver homeowners with the kind of service people remember.
That matters most when something goes wrong at home, especially in the middle of a hot summer day, when air conditioning service in Denver cannot wait. Or in the wintertime, when a furnace goes on the fritz or frozen pipes burst.
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How Bell Adapted Its Services as Denver Expanded
In 1959, a Denver Post business editor asked Douglas Bell a simple yet profound question: “Will there always be a Bell in the plumbing business in Denver?”
Without hesitation, he replied: “My oldest son Larry, 14, thinks the business is terrific. He worked here all summer, and if there was any way out of it, he wouldn’t even have returned to school last fall.”
100 Years of Keeping Denver Running
In 1926, a one-man, one-truck plumbing operation set out to serve the growing city of Denver.
By 1955, Bell Plumbing, Heating, Cooling & Electrical grew to one of the most prominent plumbing and heating firms in the west and has played an incredibly integrated role in Denver’s development through decades of growth and change.
As the city has evolved, Bell has evolved with it.
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A Century Inside Denver Homes and the Stories Written Behind the Walls
Historic Denver homes tell stories… stories layered in brick, wood, and the systems hidden behind the walls. From Victorian-era neighborhoods to modern developments, the city has grown and evolved, and that change is written into the buildings and residences themselves.
For a century, Bell Plumbing, Heating, Cooling & Electrical has been part of those stories and changes firsthand, working inside historic Denver homes and iconic city landmarks, long before either were even designated as “historic.”
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A Century of Service: The Legacy of the Best Denver Plumber
A lot can change in 100 years — and just as much can stay the same. That’s exactly the case for Bell Plumbing, Heating, Cooling & Electrical.
Since 1926, Bell Plumbing has been part of everyday life in the Mile High City, showing up for Denver homeowners through economic booms, postwar expansion, and generations of growth.
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Bell Turns 100: A Century of Innovation in Denver Home Services
From kerosene solder pots and lead pipes to smart leak detection, thermal imaging, and AI-powered energy management, Bell Plumbing, Heating, Cooling & Electrical has evolved alongside Denver for 100 years — and the Denver Post captured the full story. This feature takes a look at how the trade has transformed, how Bell continues to invest in training, technology, and smarter systems, and what it means for Denver homeowners today. Because in a city that never stands still, neither does Bell.
Proudly Serving You Across the Greater Metro
At Bell Plumbing, Heating, Cooling, and Electrical, we have proudly served the Denver Metro Area Since 1926! Check out this list of the cities we service. Give us a call for all your home service needs!
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