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The Pipeline to Presidency By Amanda Ventura PHOTO BY MIKE MERTES, AZ BIG MEDIA

Executive Q-and-A with IMCOR President Bill Mason


ill Mason worked as a mechanic and rigger at a Phoenix-area boat shop through high school and while attending Mesa and Maricopa community colleges, where he completed an AA degree in refrigeration and air conditioning. Afterwards, he worked for a small sheet metal shop for a year. In 1978, he was hired by IMCOR, then known as Karber Air Conditioning. He worked as a mechanic and delivery/yard guy for a short period and entered into a four-year apprentice program. During this time, he drove a service truck and performed everything from air-conditioning service calls to sheet metal work, piping, welding, shop sheet metal fabrication, start-up and warranty work. As time went on, he became the piping superintendent with three employees to manage. When the division grew to more than 140 pipe fitters and plumbers in the late 1980’s, Mason took on a management role for multi-million dollar projects. He was then promoted to vice president of facilities services and for approximately eight years was involved directly with customers on multiple project types. Mason was named president of IMCOR in 2003, with 25 years of experience.

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How long have you worked at IMCOR? What IS your proudest achievement since joining IMCOR? Thirty-six years. I am proud of several achievements, such as managing the first high-rise building (Phoenix City Hall building) for IMCOR as the project manager and in general working my way up from a service technician to the president. How did the company navigate the recent recession? IMCOR broadened its customer base by increasing its service group, adding plumbing-specific service, opening a manufacturing group, and IMCOR actually had some construction projects that were perhaps better than expected during the downturn. What is one of the most memorable IMCOR projects for you? The Phoenix Convention Center, phases 1 and 2, that we completed with HuntRussell-Alvarado, a tri-venture, was a very large project stretching over five years (2004 to 2009) that required the installation of several hundred feet of 36-inch condenser water piping that

was suspended approximately 100 feet above the floor that connected the Northwind (now NRG ) cooling towers to the Northwind ice storage plant located below 3rd Street adjacent to the convention center’s lower level. IMCOR is celebrating its 40th anniversary. How has the company evolved in the last decade? Over the last 10 years, IMCOR has grown to nearly a complete city block, increased its BIM department to eight stations, added a computerized automated pipe cutting machine, several automated welding positioners, a 50-feet-by-120-feet metal manufacturing building with a three-ton and six-ton overhead fully mobile cranes, a coil feeder system for the sheet metal plasma cutting table, and has become a high purity piping contractor. IMCOR has also updated its project management and accounting computer programs. What’s in store For IMCOR in the near future? Looking forward, IMCOR is faced with the same tough competition as others and plans to maintain a tight overhead and continue to think outside the box to remain competitive in a tough marketplace.

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THE AWNING OF AN ERA By Amanda Ventura


n 1973, beneath a metal awning in a Phoenix backyard, a 31-year-old sheet metal worker with less than a decade of experience established what would become a multi-million-dollar company. Merle “Rick” Karber Jr. was working for HAPCO A/C at the Metro Center complex when he decided to try and make a living on his own as a sheet metal worker. Prior to that, his contracting experience began as an apprentice journeyman and foreman for several air-conditioning companies in the Phoenix area. Nine months after founding Karber Sheet Metal, he moved from beneath the awning and into his brother’s backyard shed. Shortly thereafter, Karber's brother, Michael, quit his job with Stiles and Allen A/C to join him. The company then changed its name to Karber Air Conditioning Company. In 1978, the brothers began to see some success and their father, Merle Karber Sr., who was a sheet metal worker in the construction industry from the time he got out of the Army in 1944 until he retired in 1982, quit his job with Goettl A/C and came to work with his sons at Karber A/C that same year. “I think our father could see that even though we were making progress in our business he had vast knowledge that he could share with his sons,” Karber says. As it happens, he worked as a sheet metal worker on the Sky Harbor Control Tower in the early ‘40s — nearly 60 years before IMCOR won a bid to complete HVAC and plumbing work on the new air traffic control tower in 2004.

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Karber says IMCOR has always derived positivity by providing a good workplace for employees. As business grew so did its need for space. “We quickly ran out of room in Michael's shed,” Karber says. “A good friend, Joe Banks, offered us a place to work in the corner of his shop, Banks Welding, on east Washington Street. We eventually bought the vacant lot next door to Joe’s shop and built a sheet metal building. We presently own and occupy the city block in that location.” Karber’s first commercial project was to install sheet metal flashings on a row of buildings on east Van Buren Street for $1,200. One of the company’s recent, larger projects was to install the air-conditioning, sheet metal and plumbing for the Civic Plaza complex in downtown Phoenix — a contract for more than $50M. The journey wasn’t as direct. The company would see one more merger before it became IMCOR as its known today. The Karber brothers started Interstate A/C while still operating Karber A/C.

“Karber was a union contractor and became unable to compete on the public works jobs that were its main market due to the Arizona Supreme Court ruling that repealed Arizona's version of the DavisBacon Act,” he says. IMCOR had a plumbing subcontractor that was unable to perform on a certain project, so Karber decided to form its own plumbing company, Allied Plumbing, to do this project. “After that, we used this entity on several other projects until we got the bugs out and then we merged Allied Plumbing with Interstate A/C to form IMCOR,” he says. Though the company has a lot of history in its 40 years, Rick’s fondest memory is forming a nationally accredited, four-year apprenticeship training program in the name of his late brother, Michael, who passed away in 1990. The program, established in 1993, has graduated many journeyman tradesmen since its inception and has contributed greatly to the industry, Karber says.




IMCOR has worked on some of the most prestigious and iconic developments in Phoenix; The Orpheum Theatre, Phoenix City Hall, ASU Sun Devil Stadium, Sky Harbor International Airport and the Phoenix Convention Center are just a handful of highlights on a long list of the company’s legacy. It has worked on data centers, hospitals, libraries, power stations and casinos. Since its formation in 1974, the company has also seen its space grow from a garage in downtown Phoenix to a full city block with its own manufacturing plant. There are many of marks of IMCOR's success all over the Valley, but here are its top 10.

1. Deer Valley Municipal Airport Air Traffic Control Tower and Base Building Owner: Federal Aviation Administration General contractor: Kiewit Western Co. Award amount: $1,145,555 Project start and completion dates: July 29, 2005, to Jan. 2, 2007 IMCOR provided HVAC and plumbing construction services for this project, which consisted of three buildings – the air traffic control tower (measuring 144 feet to the top of cab), a 5KSF base building and an emergency generator building. The HVAC in the base building is a variable air volume (VAV) system and the tower has a constant volume system. The emergency generator building is not cooled. Two air-cooled chillers and two chilled water pumps feed three air handlers in the base building and five air handlers in the tower, for a total of 90 tons. There is a 500-gallon above-grade fuel oil storage tank with stairs and a monitoring system. The plumbing is typical sanitary waste and vent; domestic water and storm drain systems design. Two central vacuum systems in the base building and tower are also included in the plumbing scope of work. Seismic bracing was required on this project.

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2. Dodge Theatre (now Comerica Theatre) General contractor: Target Project start date: 2000 IMCOR installed a hydronic system for the theater. It was supplied by NRG Energy Plant, which serves multiple downtown buildings with its chilled water cooling. Two plate and frame heat exchangers along with two chilled water pumps provide chilled and heated water to the multiple air handling units (AHUs) throughout the building. There is a single hot water boiler that provides the heating for the building in conjunction with the air handling units. The hybrid piping system consisted of welded and mechanically coupled components. The duct work off of the AHUs consisted of large rectangular and round galvanized duct work. As in most theaters, air noise is a great concern. Special care was taken to assure proper air flow without creating excessive turbulence, serving the multiple levels of the theater. Much of the duct work is suspended high above the theater floor elevation. Safety was a primary concern when installing the duct work at the high elevations. This project was a design-bid-build project and was completed on time and within budget.

3. Fountainhead Office Plaza Developer: USAA Real Estate Company/Metro Commercial Properties Contractor: Sundt Construction Architect: DAVIS Size: 493,661 SF Location: 1624 Fountainhead Parkway, Tempe, Ariz. Completed: July 2011 Fountainhead Office Plaza is a high-end, high-rise office complex consisting of one 10-story building, one six-story building and

one five-level parking garage in Tempe, Ariz. The HVAC system utilizes a built up chilled water central plant, consisting of water cooled chillers, cooling towers and heat exchangers, with DX split systems being utilized for the parking garage elevator mechanical rooms. VAV boxes with electric heat strips are used to provide conditioned air and heat throughout the buildings. Condenser water pumps and chilled water pumps circulate the water through the hydronic piping system. Plumbing systems provided for Fountainhead included sanitary waste and vent, domestic water and storm drainage systems. Custom fixtures included ADAcompliant lavatories, water closets and kitchen sinks. Electric

water heaters and a hot water circulation system are used to provide hot water to the domestic water system. IMCOR provided HVAC and plumbing design assistance and preconstruction services for this project, which afforded considerable cost savings to the building’s owner and end user. 4. JW Marriott Desert Ridge Resort General Contractor: Hunt Construction Location: 5350 E. Marriott Dr., Phoenix Value: $16M IMCOR completed the central plant, HVAC, plumbing and piping for this 950-room hotel, resort and convention center. At peak demand, 180 IMCOR employees worked on this project. To keep the hotel cool during the summers, designers used a central water chilling plant along with cooling towers, heat exchangers and boilers. Additional air handlers are located throughout the hotel in strategic locations to aid in the flow of air. 5. Lower Buckeye Jail Owner: Maricopa County General Contractor: CORE Construction Architect: DLR Group Location: 3250 W. Lower Buckeye, Phoenix Size: 604,743 SF Completed: April 2005 This three-story maximum-security tower is designed to hold 1,808 inmates. Each of the tower stories contains four housing units that can hold 64 juveniles or 96 adults. Each story also has a main floor, mezzanine and a two-story outdoor exercise area. The Lower Buckeye Jail contains the central infirmary for the county jail system. At peak demand, IMCOR had 125 employees working on this project.


IMCOR 6. NAU Health and Learning Center General Contractor: M. A. Mortenson Company Architect: Cannon Design Size: 265,307 SF Location: Flagstaff, Ariz. Value: $15,523,497 Completed: Nov. 2011 This LEED Gold project consisted of five areas – recreation center, athletic, wellness and classroom additions and a recreation center renovation for an approximate square footage of 265,307 SF. The NAU Wellness Center received chilled water and steam for heating hot water via underground pipes inside the facility. Total cooling capacity is 733 tons. IMCOR’s point of connection to an underground pipe occurred in a tunnel inside the facility’s first floor mechanical room. Inside the mechanical room, the district water goes through heat exchangers to separate building systems from the District Cooling Plant system. This project had four

hydronic piping loops: a 160-degree loop for perimeter heating, a 140-degree loop for air handing units (AHUs) and variable air volume (VAV) heating, a 43-degree chilled water loop for AHUs and fan coil units (FCUs), and a 57-degree chilled water loop for chill beams. The air handlers that serve the building provide conditioned air to VAV boxes throughout the building. All areas have typical cast iron waste and vent systems. Reclaimed water from the campus loop serves water closets and urinals throughout the building. Domestic water is provided for all other fixtures. Evacuated tube solar collectors on the roof along with gas-fired boilers and storage tanks provide domestic hot water for fixtures.

IMCOR provided pre-construction services that included cost estimates, value engineering, constructability reviews and scheduling input.

Additionally, the NAU Wellness Center utilizes an evacuated tubestyle hot water heating system that consists of 102 evacuated tube-style panels with three 1,800-gallon heat exchanger type storage tanks, two recirculation pumps with 50 percent glycol piping and uses solar power to heat 100 percent of the building’s hot water requirements.

IMCOR was awarded a $9M contract to provide HVAC and plumbing service. The development sits on 600KSF city block that houses 3,000 tons of water chilled nightly to offer air conditioning to Phoenix City Hall, Orpheum Theatre and other nearby buildings.

7. Phoenix City Hall Owner: City of Phoenix General Contractor: Hunt Construction Architect: Langdon Wilson Location: 200 W. Washington St., Phoenix Completed: 1993

8. Phoenix Convention Center Expansion, Phases 1 and 2 Owner: City of Phoenix General Contractor: Hunt-Russell-Alvarado Architect: Populous Architects and Leo A. Daly Size: 2.1MSF Location: 100 N. 3rd St., Phoenix Value (IMCOR): $45M IMCOR worked on the Phoenix Convention Center expansion and renovation projects with its partners for nearly four years with labor totalling 408,000 hours. PHASE ONE This project consists of 600KSF of new convention and meeting room spaces, with four levels below grade and six levels above grade. The mechanical system consisted of 22 large custom air handing units (AHUs) serving 175 variable air volume (VAV) boxes located at each zone. The chilled water to the air handlers and fan coil units (FCUs) was delivered from the Northwind District Cooling Plant, also constructed by IMCOR. There are approximately

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 Phoenix Convention Center Expansion, Phases 1 and 2 continued.... seismic bracing. Additionally, safety, commissioning and quality were primary concerns. The TRACON building includes a data storage center responsible for storing previous flight operations. The mechanical system for the data storage included nine chilled water-cooled Liebert units.

650,000 pounds of ductwork serving the air handlers and VAV boxes throughout this facility. Plumbing systems consist of a typical cast iron waste and vent system and domestic water system serving 156 water closets, 58 urinals and 100 lavatories. Phase one is a USGBC LEED Silver Certified building consisting of dual-flush water closets, low-flow urinals, energy recovery units and fan wall technology. The project duration was approximately 20 months. IMCOR provided cost estimating for drawing changes and value engineering pricing for LEED items during preconstruction. Notably, IMCOR provided the pricing, constructability review and payback analysis for the use of fan wall technology in lieu of conventional single fan AHUs.

Additionally, the following mechanical components were utilized on this project: 14 chilled water air handlers, one 12,000-gallon water storage tank, chilled water buffer tanks, fuel oil system including day tanks, storage tanks, leak detection and controls, primary and secondary pumping systems, and three remotecooled liquid chillers with related evaporative condensers.

PHASE TWO Phase two was approximately 1.5MSF of convention space, meeting rooms, ballrooms, offices and kitchens. The project was curb-to-curb construction with a construction schedule of 22 months. IMCOR’s contracted value for the HVAC and plumbing scope was $32M. This project consists of 50 large custom air handlers with approximately 1.5M pounds of ductwork. Sound levels were a primary concern for this project, which resulted in sound traps for each unit, double-wall ductwork and factory sound testing of the AHUs being specified.

10. Sky Harbor International Airport Terminal 3 Central Plant Renovation Owner: City of Phoenix Terminal 3 is the second-oldest terminal at Sky Harbor International Airport. In 1998, IMCOR collaborated with the City of Phoenix to perform upgrades to the central plant’s equipment. The renovation consisted of temporary air cooled chillers to keep the terminal operational during construction, demolishing the existing chillers, pumps, heat exchanger, piping and concrete pads. The existing cooling towers were not replaced during this phase. IMCOR did however replace them approximately one year later under a separate budget.

The plumbing scope consisted of 450 water closets, 150 urinals, 250 lavatories and a condensate harvesting system to be used for a water feature. IMCOR was selected as a design assist partner for this large, fast-tracked project approximately eight months prior to start of any construction activities.

Logistically, the project was challenging. Access to the work area was airside, which required special badging to access the work area. This required each individual employee to be checked by the security guards prior to driving onto the vehicle service roads within the secured area. To further complicate things, all deliveries of equipment and material had to be escorted onto the vehicle service roads, off-loaded onto a loading dock and then lowered into the depressed slab in which the equipment was located. Each of the three 770-ton trane chillers were shipped in two pieces in order to fit them through the double doors and lowered onto the depressed slab equipment curbs. Additional equipment installed during the renovation were two primary chilled water pumps, two secondary chilled water pumps, one plate and frame heat exchanger and a refrigerant monitoring system. The piping system consisted of 100-percent welded carbon steel pipe and fittings. All equipment connections came off of the main header on a lateral 45-degree angle thus taking away turbulence at equipment connections. The project was completed on time and within budget.

IMCOR initiated and led the 3D coordination process with the other trade contractors and design team during the pre-construction phase. During this phase, IMCOR coordinated more than 1.5M pounds of ductwork, 50 large AHUs, 11 miles of hydronic pipe and 41 miles of plumbing pipe with the structure and other trade contractors. IMCOR identified hundreds of conflicts during this phase, many of which were resolved without cost impact. Most notably, IMCOR was able to identify steel modifications required to allow AHU sections to be installed within the building. This conflict was identified and presented using a 3D model in NavisWorks prior to any steel being erected, saving the owner a substantial amount of money. IMCOR pre-fabricated nearly 90 percent of the in-wall plumbing for all the fixture groups located for this phase, which included 450 water closets. IMCOR additionally pre-fabricated all of the coil connections to each AHU. This piping and plumbing pre-fabrication, along with its ductwork fabrication significantly improved the quality of the work installed and significantly improved schedule milestones for IMCOR and other trade contractors.

9. Sky Harbor International Airport Federal Aviation Administration Air Traffic Control Tower Owner: City of Phoenix General Contractor: Jacobs Construction Services Architect: Jacobs Facilities Location: Phoenix Value: $89M Project start and completion dates: April 2004 to Feb. 2007 This unique, mission-critical project consists of a 330-foot air traffic control tower, central plant, base building and terminal radar approach control (TRACON) building. Classified as an essential building, this project required special attention to


Bonds of Steel The Unified Group membership melds businesses cross-country By Amanda Ventura


nterstate Mechanical (IMCOR) was sandblasting a cooling tower for a client of Chicago-based company Air Comfort when IMCOR employee Jeremy Ettesvold realized the metal was in worse shape than it looked from the outside. He contacted Air Comfort, sent a revised proposal with a change order and then rerouted a few IMCOR employees to pull and replace one of the tower’s metal panels by the end of that same work week. This is the kind of integrity that defines the partnerships between The Unified Group (TUG) members such as Air Comfort and IMCOR. TUG is a group of 50-plus U.S. companies that share best practices by way of digital and in-person forums. Kim O’Connor, service operations manager at Air Comfort Corporation, has been in the HVAC business for nearly 20 years. When she was promoted to her current position, she had a lot of industry experience but had never held a management position before filling the vacancy at her company. “The first TUG forum I attended was a management forum,” O’Connor says. “After the speaker introductions, we went around the room and told what company you were with, your position and

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a little about yourself. I did this and mentioned my new position and that I had no management experience. During the breaks and at the group dinners throughout the three-day forum, the members took turns coming to me and offering support. My last day there, as I was looking around the room, I realized how fortunate I was to attend this forum. Where can you get 20 or 30 mentors in your exact field at one time?” Air Comfort is one of the founding members of TUG. It has worked with IMCOR for five years, O’Connor says. “Their response time to emergency calls along with the quick response time for providing quotes or updates on repairs has always been fantastic,” she says. “IMCOR has several maintenance agreements in place for Air Comfort customers. “Air Comfort is 100 percent comfortable with all of The Unified Group members when calling upon them for assistance,” O’Connor says. “TUG members have a commitment to training which allows not only their technicians – but all their employees to provide topquality service.” O’Connor says it takes only a few minutes after an e-mail to all



11:08 AM

Below Left : Top: Seated, left to right, Jim Bartolotta, Julie Bishop, Matt Todd, Kevin Almond, and IMCOR’s Dave Dickens, standing, at a TUG conference. Below Right : Left to right: Kevin Almond, IMCOR’s Jeremy Ettesvold, Bill Flynn, and Tom Rowles. C








the members to get a response or solution to any question sent out. “When we look for potential members, we’re looking for companies who do exceptional work and are constantly striving to become even better,” says Allison Rodgers, marketing coordinator for The Unified Group. “Participation is critical to The Unified Group. Participation can take the form of attending meetings or training sessions, we typically have four to six a year, actively sharing ideas and best practices with other members, utilizing the resources and e-mail tools, and getting as many people within the organization involved and engaged with the group.” Membership in The Unified Group is geographically exclusive, there’s strength in an environment where companies can share best practices without fear of a competitor in the room. “The goal with this partnership was to ultimately grow our business but we also grew our team and extended our footprint,” says Dave Dickens, who handles service sales at IMCOR’s Facilities Service Group Division. Dickens estimates IMCOR was awarded eight major projects and gained 10 new customers through its Unified Group participation. The projects include cooling tower refurbishments, storage tank replacements, rooftop unit retrofits and HVAC and plumbing services. “Working with Air Comfort has connected us to Jones Lang LaSalle and select properties that fall under their portfolio,” Dickens says. “They have used us for HVAC/plumbing service and special projects. We have also built phenomenal relationships with other members like Pacific Rim Mechanical (southern California), Yale Mechanical (Minnesota), Innovative Service Solutions (northern Florida), Tweet Garot (Green Bay), Vital Mechanical (Seattle) and many more that have led to new customers that we are still working with today.” Many IMCOR employees have had the opportunity to attend service management classes, sales forums, leadership training, as well as owner and customer service meetings over the last five years, says Dickens. The meetings address industry trends, best practices and working in collective groups to find better ways to take care of customers and grow business. “We like that each meeting pushes you to be attentive and affords you the opportunity to immediately implement your new found knowledge in a presentation or role play setting,” he says. “Each meeting has provided us many take-a-ways that have been implemented into our overall go to market strategy thus driving business and gaining market share.”





of delivering results, reliability, safety & rock solid dependability to the Southwest! 75



1987 Interstate Air

Karber Air Conditioning completes first high-rise project, Pepper Place Tower apartments



Brothers Merle and Michael Karber found Karber Air Conditioning Company

Interstate Air Conditioning wins visual improvement award, presented by Phoenix City Council for enhancement of the community

1985 Karber Air Conditioning Late 1970s

Karber Air Conditioning completes first large school project, Mercury Mine Elementary

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merged with Interstate Air Conditioning

Conditioning begins long-standing relationship with Sundt Construction with completion of City of Chandler Parking Structure

1987 Interstate Air Conditioning selected to work on Terminal Two baggage claim. This is its first airport project of many, including the air traffic control tower at Sky Harbor International Airport in 2004.


1989 Interstate Air

IMCOR works on the first two phases of the Phoenix Convention Center

Conditioning and Allied Plumbing merge to form IMCOR

2011 IMCOR builds its own manufacturing plant


IMCOR celebrates 40 years

1988 Interstate Air Conditioning begins longstanding relationship with Hunt Construction with completion of Havasu Regional Hospital


IMCOR establishes Michael L. Karber Craft Apprenticeship Program in memory of the company’s co-founder, who passed away in 1990.

2011 IMCOR begins work on multiple Intel projects over a three-year period



Chuck Salt, Area Manager, Sundt Construction “Arizona Public Service had a critical schedule and needed to renovate the HVAC systems in an operations space on its campus. Evaluating the schedule, scope and familiarity with the space, Sundt partnered with IMCOR for the project, fast-tracking equipment procurement, scope coordination, fabrication and the crane plan,” says Sundt Construction Area Manager Chuck Salt about one of its most memorable partnerships with IMCOR. “The project involved hoisting new HVAC equipment over a live 24/7 operation center, requiring a 300-ton crane to hoist the 8,700-pound units a distance of 274 feet. The Sundt/ IMCOR team cut through the roof to install new HVAC openings while the APS operations staff stayed live in their critical space. Sundt teams with IMCOR on mission critical projects like this when the client’s required outcome is perfection and requires the best and brightest team available.”

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Tim Smith, Vice President, Hunt Construction Group “IMCOR and Hunt Construction Group have maintained a strong working relationship for nearly 30 years, which has resulted in the successful delivery of dozens of projects across nearly every sector of the local construction market...We have been fortunate to have delivered many memorable projects with IMCOR (Gould Manufacturing, The Esplanade, Scottsdale Mayo Clinic expansion, Phoenix City Hall, Bank One Ballpark (Chase Field), The Phoenician, Sky Harbor Terminal 4 and the Phoenix Convention Center expansion among them). For me, the Phoenix Convention Center project is at the top of the list as it was delivered in phases over the course of five years and was one of the largest commercial projects in the state...IMCOR was [Hunt-Russell-Alvarado's] partner for each phase and executed more than $45M worth of plumbing and HVAC work. Their efforts at preconstruction planning, MEP coordination, QA/QC and start-up were instrumental to the success of the project.”

Rich Farrell, Senior Director, Facilities Department, Desert Schools Federal Credit Union "(IMCOR) has been one of our primary day-to-day HVAC maintenance contractors since 2001. In addition to providing preventative maintenance and service support, we have worked with them on a wide variety of projects from routine unit replacements to complex cooling tower and chiller replacements...The first and one of the most complex projects I recall working with IMCOR on was for a broken blower wheel driveshaft on a building air handler at one of our multi-use office buildings. It was the only source of air conditioning for the entire building...The replacement shaft had to be produced and installed in sections because of its size and accessibility to the basement. IMCOR was able to get the shaft locally produced and our system back up and cooling in a very short time... It’s not just the commitment to work, it’s the people that run IMCOR that makes it different. The relationship that has developed over the years is genuine."

People of IMCOR

Jeremy Ettesvold Director of Business Development

Brian Greer

Senior Project Manager

Les Jaeger

Preconstruction Services

Cary McNutt

Plumbing Foreman

Steve Shutack

Field Operations Manager

IMCOR employee for 23.5 years

IMCOR employee for 18 years

IMCOR employee for 28 years

IMCOR employee for 30+ years

What’s the best part about working at IMCOR? The vast knowledge and skill set of all the IMCOR team members. The ability to perform so many different types of projects within the industry. Being creative and thinking outside the box to give the owners and general contractors the best possible end result that’s quality work performed safely, in a timely manner and within budget.

What’s the best part about working at IMCOR? The people.

What’s the best part about working at IMCOR? Knowing they have your back whether at work or personal. They have always been there for me.

What’s the best part about working at IMCOR? All the great people I’ve had the opportunity to work with.

IMCOR employee for 10.5 years What’s the best part about working at IMCOR? The teamwork concept. After spending eight years in the Air Force, working in the HVAC trade, I wasn’t sure how the transition would be into the civilian world. Ten-plus years later, the camaraderie and teamwork still exist in my life. What’s the most memorable project you’ve worked on at IMCOR? The replacement of two 350ton evaporative condensers in a package central plant at Desert Schools Federal Credit Union’s corporate office. Faced with an unfortunate system failure, our team scheduled back-to-back weekend shutdowns with precision crane lifts required to return their cooling system to 100 percent operation. What is your proudest professional accomplishment? Being given the liberty to build a service department and sales team like it was my own company. Being an employee of an ESOP company, I have appreciated every opportunity IMCOR has given me over the past decade and I’m very proud to be part of this team.

What’s the most memorable project you’ve worked on at IMCOR? It’s very difficult to pick just one, as I have had the pleasure to work on several stellar projects for IMCOR. The top three are JW Marriott Desert Ridge Resort, Sky Harbor FAA Air Traffic Control Tower & Tracon Building, and phase one of the Northwind Central Plant No. 2. What is your proudest professional accomplishment? Mentoring young up-andcoming project managers to be the best managers they can be. What is one thing people would find surprising about you? I like to photograph wildlife and flowers.

What’s the first and most recent project you’ve worked on? My first project was a prime bid at the ASPC Eyman Prison. My most recent was the VA Outpatient Hospital design assist project. What’s the most memorable project you’ve worked on at IMCOR? Phoenix Convention Center, phases one and two. What is your proudest professional accomplishment? Giving to the community. IMCOR provided the plumbing and HVAC systems and installation free of charge to the Teen Wellness Community facility, a facility that houses young men and women who are recovering from severe illness treatments. Giving back to the community in that way is as great as landing the biggest jobs. What is one thing people would find surprising about you? I completed two Ironman Triathlons.

What’s the first and most recent project you’ve worked on? First project was Barry Goldwater High School. Most recent project was North Scottsdale Surgery Center. What’s the most memorable project you’ve worked on at IMCOR? Phoenix Convention Center, phase two. The job was not easy, but we made it through. PCC was the job I was on when I lost my wife to cancer. What is your proudest professional accomplishment? Longevity! Not too many people can say they have come this far with a single company, especially in the business we are in. What is one thing people would find surprising about you? I’m not as tough as I act. Most people would be surprised of how often I do have their back.

What’s the first and most recent project you’ve worked on? St. Joseph’s Hospital and Medical Center remodel was my first and I am currently working on the Del Webb central plant. What’s the most memorable project you’ve worked on at IMCOR? One would be the Phoenix Convention Center. It was interesting and challenging. What is your proudest professional accomplishment? Working 30 years at IMCOR. What is one thing people would find surprising about you? I like to snowboard. I started snowboarding five years ago and enjoy Sunrise Ski Park in the White Mountains and Tahoe.


Building the Southwest since 1974 with major commercial, industrial, civic and medical projects

HVAC • Sheet Metal • Plumbing • Process Piping Building Automation Systems • CAD / BIM Design General Commercial Contracting

interstate mechanical corporation 1841 East Washington Street . Phoenix, AZ 85034 602-257-1319 . 800-628-0211 . Fax 602-271-0674

General Contracting B-01 ROC094734 • AC & Refrigeration L-39 ROC073195 • Sheet Metal L-45 ROC073196 • Plumbing L-37 ROC084435 • Process Piping L-04 ROC084436

Imcor 40th Anniversary  

Over the last four decades, Imcor has continued to think outside the box. Take a look at some of the bonds they've built, their notable proj...

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