Boilers, repair costs and the escalating fight over the future of Dallas City Hall

On any given day at Dallas City Hall, it’s hard to dress for the job.

Complaints roll in regularly from employees in the summer as they reach for jackets in a freezing City Council chamber. When temperatures drop, space heaters hum under desks, even though they’re not supposed to be there.

So, when a recent council debate over the building’s future zeroed in on its HVAC boilers, the arguments quickly blew past that mundane machinery into a larger fight over what really needs fixing, and why. 

The lingering questions stem from a council-ordered assessment by outside consultants that estimated City Hall requires $329 million in corrective work, and potentially far more.

This is the story of how a set of boilers, installed two years ago as part of a heating upgrade, suddenly became shorthand for accusations of padded numbers, dueling fact checks, political maneuvering and a trust gap between skeptics and those backing the cost projections.

Behind the sparring is a pivotal decision: Should Dallas invest millions in a building with growing maintenance needs or move city operations and redevelop the site, possibly for a downtown sports arena and entertainment district?

Mayor Eric Johnson has waved off doubts about the building’s repair estimates and how they were calculated, accusing critics of playing “silly games” to “muddy the waters” and “make normal stuff sound nefarious.” 

He said exploring relocation options for an aging City Hall is standard due diligence, not a backroom scheme.

“This city is at an inflection point,” Johnson said in a March newsletter to residents. “It’s the right time to ask what kind of urban core Dallas wants to have in the coming decades and then start building it.”

Architects, preservationists and others say the process is being fast tracked to steer the city toward abandoning a civic landmark for redevelopment tied to the Dallas Mavericks’ search for a new home. 

Council member Cara Mendelsohn said downtown business interests are having too much sway over discussions about City Hall’s future.
“This is not how representative government should work,” she said in a post.

Fixing the building’s overall HVAC system, pegged at about $24 million, is one of the larger line items in the City Hall condition assessment report by AECOM and the other outside consultants.

On the seventh-floor mechanical room, next to the old climate control office and its abandoned dusty chairs where workers once sat to monitor the machinery, four heavy blue boilers anchor a maze of pipes.

City officials refer to it as the “primary loop”, a network that heats and maintains hot water, drawn eventually by the larger circulation system of pipes and ducts throughout City Hall (the secondary loop) to regulate temperatures.

Installed at a cost of $4.5 million, the boilers are relatively new, under warranty and, by the city’s own account, in strong condition.

That’s why the boilers kept coming up at a marathon council meeting in March when the consultants were pressed on whether their repair estimates included replacing parts of a system that had just been rebuilt.

“Your philosophy about your entire cost estimate was we have to replace every system and every pipe and wire in the building,” council member Paul Ridley told consultants. Even with a two-year-old heating system, he said, “you priced replacing that, isn’t that correct?” 

“Yes,” replied John Schalekamp with John Schmidt & Stacy consulting engineers. 

The city, Schalekamp added, replaced boilers and major piping in the mechanical room and across the roof. But older steel piping throughout the rest of the building still needs replacement.

That initial exchange intensified criticism from those who say the city may be overstating how much work the nearly 50-year-old building requires.

Weeks later, Mendelsohn revived the issue on social media, citing a  2023 city memo on the boiler replacement project.

“Why would brand new, warrantied systems be included for replacement?” Mendelsohn wrote in an X post. 

Reached in April, Schalekamp told The Dallas Morning News his comments during the council meeting had been misunderstood. 

“That’s not what I meant,” he said, explaining his firm only evaluated the equipment and did not prepare the repair estimates, which came from infrastructure consulting firm AECOM.

AECOM did not respond to multiple requests for comment.

City officials, for their part, say the boilers and piping in the mechanical room are not included in either the consultants’ $329 million repair tally or the city’s projections released last October.

Instead, the estimate covers the secondary loop, the web of pipes, ducts and distribution lines that run through walls and ceilings throughout the building, said John Johnson, the facilities and real estate management director.

City Hall’s HVAC system relies on chillers, boilers, pumps and massive air-handling units to move heated and cooled air. Inside the mechanical rooms, decades-old beige lines weave alongside newer white sections, a visible patchwork of repairs over the years. 

AECOM described the boilers as being in “excellent condition,” but said much of that surrounding infrastructure is wearing down.

Corrosion and thinning pipe walls, especially those carrying chilled water, pose risks to the HVAC’s reliability and operations, the report said, requiring “a complete re-design” of parts of the system. 

Hidden behind walls and above “waffle ceilings,” air ducts encased in concrete shafts struggle to circulate air through offices. The city said repairs would require either tearing out ceilings to reach the shafts or abandoning the system and installing new ductwork outside the concrete.

The boiler clash has split City Hall into two camps: Critics using it to cast doubt on the consultants’ recommendations, and
defenders saying the numbers are being twisted to undermine the broader condition report.

AECOM’s assessment found problems across much of the building, including leaks and water intrusion in the underground garage, roof and concrete deterioration, electrical equipment no longer supported by manufacturers and failing fire suppression systems.

The report said City Hall is “increasingly constrained by aging infrastructure and deferred capital renewal,” creating elevated risks to reliability, life safety and operations.

Ridley said the building assessment was rushed, tilted toward relocation and lacked a clear breakdown of the repair costs.

“They just came up with this $329 million figure and said, trust us,” he said. 

Council member Adam Bazaldua also questioned the consultants’ role in the process. He warned about “the incestuous nature of Dallas being Dallas.”

He led a move on the council barring firms advising on City Hall from later benefiting from redevelopment work tied to the site.

AECOM stood by its work, with CEO Troy Rudd saying in a letter to the council that the report follows industry standards and outlines conditions and scenarios rather than  dictating a decision.

Council allies such as Chad West, chairman of its finance committee, backed the consultants, calling attacks on their integrity unfounded. 

Meanwhile, Bazaldua and council member Paula Blackmon used outside consultants who said AECOM’s assessment met industry standards but was too preliminary for budgeting or bids.

Ridley, Mendelsohn, Bazaldua and Blackmon were among the six council members in March who opposed continuing to explore relocation options for City Hall, while the mayor, West and seven others supported studying both staying and leaving.

The 9-6 split underscored how fractured the council remains ahead of a looming choice over whether Dallas reinvests in City Hall or pursues a sweeping downtown redevelopment project.

Backlash over the first round of estimates has prompted yet another layer of review.

The city brought in another consultant to examine existing City Hall assessments and update proposals for repair and relocation. Tolbert is expected to brief the council on that starting May 20.