NYC’s New Extreme Heat Law Is Changing Everything Landlords Must Know About PTAC Repair Response Times

New York City has long held landlords to strict standards when it comes to keeping tenants warm during the winter months. But as summers grow more dangerous, the city has taken a landmark step forward. The New York City Council passed Intro 0994 of 2024, which requires landlords to maintain an indoor temperature no higher than 78°F — with 50-percent relative humidity — in occupied apartments when the outdoor temperature is 82°F or higher between June 15th and September 15th. This sweeping legislation is not just a policy update — it’s a fundamental shift in what it means to be a responsible landlord in New York City, and it has major implications for how quickly building owners must respond to PTAC system failures.

Why This Law Exists: The Deadly Reality of NYC Heat

The urgency behind this legislation is stark. City health data shows that hundreds of New Yorkers die each summer from heat-related causes, most often in un-air-conditioned homes. Extreme heat is already the city’s deadliest climate-driven hazard, and officials say that guaranteeing access to cooling is no longer optional infrastructure. The problem is growing rapidly. The cooling requirement was spurred by rising temperatures, as the number of days crossing 86 degrees each year has more than doubled over the last half-century, from 14 in the 1970s to 32 at present, according to a 2024 risk assessment by the New York City Department of Health and Mental Hygiene.

It is estimated that 850,000 New Yorkers currently lack air conditioning in their apartments. Most of those tenants live in low-income neighborhoods and communities of color, according to the city’s environment and health data portal. The disparity has life and death consequences. This is exactly why lawmakers felt compelled to act — and why landlords can no longer treat a broken PTAC unit as a low-priority maintenance item during summer months.

What the New Cooling Law Requires of Landlords

The City Council passed legislation sponsored by Council Member Lincoln Restler that requires building owners to install and maintain AC units for tenants that request them. When the law takes effect, landlords will be required to install and maintain AC units, while renters will pay for the cost of electricity.

The timeline for compliance is structured but firm. Renters can begin opting in by requesting air conditioning from their landlord on March 1st, 2028. After that, their landlord has 60 days to comply. Landlords must also inspect the AC once a year at least 30 days before June 15th to make sure the AC unit can maintain the required temperature. Enforcement won’t begin until 2030, and landlords can apply for a hardship waiver that extends that timeline in increments of two years.

The law applies broadly. The City Council passed legislation that requires building owners to install and maintain AC units for tenants that request them, and the law applies to both market-rate and rent-stabilized units. This means the vast majority of NYC residential buildings — from luxury high-rises to older rent-stabilized walk-ups — fall under its scope.

How This Raises the Stakes for PTAC Repair Response Times

For the millions of New York City apartment dwellers whose primary source of heating and cooling is a Packaged Terminal Air Conditioner (PTAC), this law carries enormous practical weight. A malfunctioning PTAC unit during a summer heat wave is no longer just an inconvenience — it may now constitute a legal violation with real financial consequences for building owners.

Under existing NYC housing law, emergency response timelines are already strict. Landlords are required to respond to complaints within 24 hours for emergencies and must document repairs to avoid liability. Landlords who ignore requirements face steep fines: Class C Violations (immediate hazard) for no heat or hot water carry fines ranging from $250 to $500 per day for initial violations, with an additional $500 per day for each day the violation is not corrected. With the new cooling mandate in effect, similar enforcement mechanisms are expected to apply to cooling failures during the summer season.

In multi-unit buildings, landlords can use smart thermostats to monitor temperatures remotely, reducing complaints significantly and ensuring compliance during inspections. Having 24/7 emergency contacts for breakdowns is also essential, as delays can incur $250 daily fines plus tenant relocation costs if the unit becomes uninhabitable.

PTAC Units: The Frontline of Compliance

In NYC’s dense residential building stock, PTAC units are the workhorses of both heating and cooling. They are found in thousands of apartment buildings across all five boroughs. Under the new cooling law, a broken PTAC unit during the June 15–September 15 cooling season — especially when outdoor temperatures exceed 82°F — could directly trigger a landlord’s legal obligation to act swiftly. Proactive ptac repair and maintenance is no longer just good property management; it is a legal imperative.

Tenants also have strong remedies available if landlords fail to act. Tenants facing excessive indoor heat have multiple remedies available, including rent abatement tied to NYC Rent Guidelines Board standards. These cover violations of indoor temperature limits and cooling requirements during the heat season. Tenants can call 311 for immediate heat complaints, pursue rent abatement up to 100% during violations, and claim constructive eviction if conditions make the unit uninhabitable.

What Building Owners and Property Managers Should Do Now

With enforcement beginning in 2030 but tenant opt-in rights starting in 2028, building owners have a window to prepare — but it is narrowing fast. Here are the most important steps landlords should take today:

• Schedule annual PTAC inspections before June 15th. Landlords must inspect AC units at least 30 days before June 15th to make sure the unit can maintain the required temperature.
• Establish 24/7 emergency repair contacts. Responding to complaints within 24 hours for emergencies and documenting repairs is essential to avoid liability.
• Audit your building’s PTAC inventory. Identify aging or underperforming units that may fail during peak summer heat and prioritize them for replacement before tenant opt-in requests begin in 2028.
• Understand the fines. HPD violations classified as Class C (hazardous) carry fines of $250 per day plus a $1,000 administrative fine, with unresolved violations leading to court proceedings.
• Partner with a trusted PTAC service provider. Having a reliable contractor on call is critical to meeting the city’s tight response-time expectations.

Lion Enterprises: NYC’s PTAC Experts Ready to Help

For landlords and building managers navigating these new obligations, having the right PTAC service partner makes all the difference. Lion Enterprises provides fast, high-quality service and competitive pricing for heating and air conditioning PTAC units in the New York metro area. With over 50 years of expertise, Lion Enterprises is the contractor of choice for apartment owners, building owners, and managers throughout the New York area.

Lion Enterprises is the proud parent company of three leaders in the PTAC market: Accumtemp, Lion-Aire, and Spectrum. Together, their business units specialize in the service, repair, and replacement of PTAC units and thru-wall equipment. Based in the Queens and NYC area, their industry-leading reputation is built on highly skilled expert technicians, a laser focus on customer service, rapid response installations and service available 24/7/365, fully licensed and insured operations, and all work guaranteed for one year.

As NYC’s extreme heat laws reshape what landlords owe their tenants, the window for preparation is open — but it won’t stay that way for long. Whether you manage a single residential building or a portfolio of properties across the five boroughs, now is the time to get your PTAC systems inspected, repaired, and ready for the compliance demands ahead.