Intl tailoring roof

Installing heat pumps in a fully-occupied co-op

How this Manhattan building completed a major energy upgrade without disrupting resi­dents’ lives
January 1, 2025

Photo: Mary Cunningham

For Eric Einstein, co-op board pres­i­dent of the International Tailoring Company Building, over­hauling his building’s heating and cooling appa­ratus was akin to swap­ping out the engine of a plane mid-air. 

This is a fully occu­pied building with people living their lives, and we were changing the under­lying tech­nology that was powering their comfort,” said Einstein. So yeah, it was tricky.” 

Engineers had their work cut out for them. This was the first time Ecosystem, the company contracted for the project, had worked in a resi­den­tial building in New York City. From the moment Ecosystem and the co-op signed the contract, the reno­va­tion process took close to two years to complete. During the construc­tion phase, Ecosystem’s team spent roughly five days apiece in each of the 172 units, replacing the 34-year-old fan coils with brand-new hybrid water source heat pumps. 

This meant having to work around the building’s nearly 300 residents.

We needed our engi­neers in the building,” said Ben Milbank, senior project devel­op­ment engi­neer at Ecosystem. This wasn’t some­thing where you could be like, Here’s the IKEA instruc­tion manual on how you do this.’”

Ecosystem orig­i­nally told the co-op board they would need five days of unfet­tered access to each person’s unit. But the board wasn’t thrilled with the idea of making people vacate their apart­ments entirely. So, after months of contract nego­ti­a­tions, the two sides struck a deal: Residents and their pets would leave their apart­ments from 8 AM to 5 PM for five days to allow subcon­trac­tors to get the work done. 

The construc­tion company also came up with what Ecosystem senior busi­ness devel­op­ment manager Jaime Pereira described as a robust apart­ment protec­tion regi­ment” to safe­guard the units from damage and dust. In prac­tice, that meant cordoning off the work zone in each unit with plastic curtains – no small feat for a building with 13.5‑foot loft ceilings. 

It made it a labyrinth for a lot of people, a plastic maze,” said Paul Cabana, a co-op board member who has lived in the building for 11 years.

To keep resi­dents up to date throughout the life of the project, the board brought in AKAM, their prop­erty manage­ment firm’s project manage­ment group. AKAM handled all major commu­ni­ca­tion efforts, a task too unwieldy for the volun­teer board members to manage on their own.

Before the project launched, resi­dents got an email detailing what to expect and a rough time­line of when each apart­ment was sched­uled for its five-day visit. They also got a short reminder closer to the date. 

The board simul­ta­ne­ously main­tained its regular commu­ni­ca­tion chan­nels — a twice-a-year meeting with share­holders and a bi-monthly newsletter — to give tenants prac­tical infor­ma­tion and updates on major milestones.

Things didn’t always go exactly according to plan: There were occa­sional coor­di­na­tion issues, misun­der­stand­ings regarding the time­line, and delays in infor­ma­tion sharing, said Levani Sidiani, former senior project manager with AKAM. In some cases, it took workers longer than five days to finish some units, which proved disrup­tive to some building residents. 

I think it took every­body by surprise just how unpre­dictable the expe­ri­ence could be, apart­ment by apart­ment,” said Cabana. The layouts in the building vary widely, which added an extra layer of complexity for the construc­tion team.

Regardless, any hoops they had to jump through were well worth it in his eyes, and Cabana appre­ci­ated that everyone took their time to ensure things were done prop­erly. The scale of the upgrade so exceeded the hassle of instal­la­tion,” he said.

Mary Cunningham is a Brooklyn-based jour­nalist and a proud grad­uate of the Craig Newmark Graduate School of Journalism at CUNY.