NYC AC Debate
NYC Mayor Mamdani's 78-Degree AC Guidance for Heat Wave Ignites Republican Backlash
Anonymous
Key Points
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City facilities are actively applying the 78-degree policy, with Mamdani noting municipal buildings are 'maintaining the 78 degrees rule' as part of the conservation effort.
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The heat wave is described with concrete stress on the grid, including a 91-degree high on a Wednesday and temperatures expected to reach around 100 degrees for the rest of the week, underscoring grid pressure despite the cooling guidance.
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Republican backlash featured high-profile quotes labeling the policy as socialist, including Vivek Ramaswamy: 'The right answer isn’t restrictions or mandates. It’s drilling, fracking, coal, & nuclear,' Nikki Haley: 'Welcome to socialism,' and Ted Cruz joking: 'In a first-world country, you could turn on the A/C.'
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Mamdani has publicly framed the guidance within the language of collectivism, referencing the 'warmth of collectivism' and embracing socialist policies, a framing that critics leveraged to portray the policy as ideological overreach.
New York City Mayor Zohran Mamdani told residents to set their air conditioners to 78 degrees as a dangerous heat wave bore down on the city, with temperatures expected to hit 102°F and heat index values between 110°F and 115°F by the Fourth of July weekend, according to FOX 5 New York. Mamdani confirmed all city buildings would follow the same rule, asking businesses and residents to turn off nonessential lights and unplug electronics to keep the power grid stable.
The guidance sparked immediate national backlash. Republican politicians labeled it socialist, with the post reportedly seen over 36.5 million times on X, according to Fox News.
Heat Dome Forces City Into Emergency Mode
The National Weather Service issued an Excessive Heat Warning on July 1, forecasting heat index values up to 115°F for the holiday weekend. Mayor Mamdani activated the city's Heat Emergency Plan on June 30, deploying 21 mobile cooling vans and opening hundreds of cooling centers across the five boroughs, according to ABC7NY.
Con Edison, the city's power utility, warned of record-approaching energy demand. The company is currently in the middle of a $3.9 billion grid upgrade to handle growing electricity load, according to Newsweek. Still, analysts project a 125-megawatt reliability gap by 2032, underscoring how close to the edge the grid already sits.
Mamdani Frames 78 Degrees as Collective Duty
Mamdani posted on X: "Set your AC to 78 degrees... A stable grid means the AC stays on, and lives are saved. Let's ease demand and get through the heat together." His deputy press secretary Jeremy Edwards backed the message, saying "the City is asking every business and every New Yorker to do their part in protecting energy grid reliability," according to Newsweek.
The 78-degree target is not new. The U.S. Department of Energy and Energy Star have long listed it as the optimal summer thermostat setting. Energy experts say raising the thermostat just one degree above 72°F cuts energy costs by 3% to 5%. Mamdani tied the guidance to his political brand, referencing "the warmth of collectivism" — a phrase from his own campaign — according to Silive.
Republicans Go Viral Calling the Policy Socialist
High-profile conservatives turned Mamdani's guidance into a national culture war flashpoint. Vivek Ramaswamy posted: "The right answer isn't restrictions or mandates. It's drilling, fracking, coal, & nuclear." Nikki Haley wrote simply: "Welcome to socialism." Ron DeSantis mocked the mayor's own campaign slogan, asking: "Is this what was meant by the warmth of collectivism?" according to The Times of India.
Senator Ted Cruz went further, tweeting: "In a first-world country, you could turn on the A/C." Fox News and other conservative outlets framed the advisory as energy rationing and a sign of New York City's decline. The hashtag #WarmthOfCollectivism trended nationally, according to USA Today.
Grid Costs Are Rising Regardless of the Political Fight
Behind the political noise sits a real infrastructure problem. Con Edison has warned of an 11.3% rise in electric bills for 2026 due to supply charges and grid upgrades. NYC averages only about 4 days per year above 95°F historically, but that figure is projected to climb to 17 days per year by 2030, according to Newsweek.
City officials stress that 78°F is not safe for everyone. The Heat Emergency Plan includes 600-plus street outreach workers to find elderly and disabled residents who may need a cooler environment, according to NYC.gov. The episode is already being called a preview of how cities will fight over energy policy as summers get hotter.
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