Every few minutes, the mortuary owner’s phone rings. Since a record-smashing heat wave began taking lives and storage space for bodies ran out in Paris and beyond, funeral directors and mourning families keep asking the same question: do you have room for one more?

In the middle of that scramble, Zouhaeir Hertelli, a mortuary and funeral service director, says he has to repeatedly answer “Non,” because all 32 cold-room places are taken. He called it “a really catastrophic situation,” saying he was “getting hundreds of calls.”

The human toll is already measurable, even as the paperwork catches up. Public Health France said deaths surged during the heat wave’s peak in France last week, when temperatures soared in many places above 40 degrees Celsius (104 degrees Fahrenheit) and broke records for nighttime highs. That is the brutal one-two punch: brutal days and sleepless, sweaty nights that leave fatigued bodies with no recovery.

The agency’s first preliminary estimate shows the acceleration. On Wednesday, when France registered its hottest-ever day, it recorded more than 1,200 deaths. On Thursday, deaths rose to more than 1,400, and on Friday the agency reported another 1,400. Public Health France also cautioned that its estimate of at least 1,000 additional deaths during those three hot days alone is expected to increase as more death certificates are registered. The reason is practical and administrative: many deaths, especially those occurring at home and in care facilities for older people, are still not registered electronically. In other words, the count may climb, but the capacity crisis is already here.

By Hertelli’s account, the bottleneck is not only clinical, it is logistical. He and other funeral industry figures say Paris mortuaries quickly ran out of storage space. The city installed two temporary storage units for municipal mortuaries, with 20 places each, and city hospitals provided another 50 additional places. Even with that, Hertelli said funeral directors he spoke to were storing bodies as far away as Chartres, about 80 kilometers (50 miles) from Paris, and in other regions around the capital.

To expand room further, Hertelli said he has asked authorities for permission to temporarily install refrigerated containers outside his mortuary near Paris’ Orly airport, but he is still waiting for a “green light.” That detail matters for decision-makers because it shows how quickly a crisis can shift from “resource strain” to “approval bottleneck.” In normal times, refrigeration capacity and permitting are planning issues. In heat-wave peak conditions, they become triage.

Public Health France also highlighted who appears most affected. It said that 85% of deaths registered so far during the three days it studied involved people aged 65 and above, and it noted a sharp increase in deaths at home, up by about 40%, particularly in the Paris region. This aligns with what funeral directors described on the ground. Véronique Bertrand, a Paris funeral director, said she fears lessons have been forgotten, arguing that many deaths being handled now involve people living alone and isolated at home. She said that, based on the circumstances in which they were found, there can be no other conclusion than these were deaths caused by the heat.

There is historical context behind that sense of “we should know better.” In 2003, historic high temperatures, surpassed this time, were blamed for 15,000 deaths and triggered a national reckoning about care for older people, who were particularly hard-hit. More than 5,700 deaths were also attributed to heat during an exceptionally hot summer last year. The current surge is now putting that reckoning into a new arena: not just public health systems, but the downstream services that families rely on when the health system is overwhelmed.

For executives and board members in any sector that depends on physical capacity, staffing, and regulated approvals, the Paris story is a warning. Heat does not only kill people, it saturates the entire chain around people. When cold-room space fills, when death certificate registration lags, and when refrigerated containers wait on permits, the system doesn’t just suffer. It stops serving. The strategic stake for peers is clear: resilience is not a slogan, it is a queueing problem, and heat turns every delay into a compounding cost.