Every summer, thousands of NYC renters sweat through weeks they didn't have to. Not because the law failed them, but because they didn't know what the law said.
New York City has some of the most specific heat regulations of any city in the country. But those regulations have real gaps when it comes to air conditioning — and landlords have figured out how to use those gaps. Here's the complete picture so you're not caught off guard when July arrives.
The Heat Law Is Real — But It Doesn't Cover AC
NYC's official heat season runs from October 1 through May 31. During those months, landlords are required by law to maintain specific indoor temperatures:
6 AM to 10 PM: If the outdoor temperature drops below 55°F, your apartment must be at least 68°F.
10 PM to 6 AM: Indoor temperature must be at least 62°F, regardless of outdoor conditions.
These rules are enforceable. File an HPD complaint at 311 and an inspector can show up. Landlords who fail inspections can be fined.
But here's the catch: there is no equivalent law for summer cooling.
New York City does not require landlords to provide air conditioning or maintain a maximum temperature in your apartment during summer. That's the legal reality. But "the law doesn't require it" doesn't mean your landlord has zero obligations — it means the obligations depend entirely on your specific situation.
When Your Landlord Actually Has to Provide AC
There are three scenarios where a landlord is legally obligated to ensure you have working air conditioning:
1. Your lease says AC is included.
If the lease lists air conditioning as a provided amenity — whether that means window units, a through-wall system, or central air — it is a binding part of your rental agreement. If it breaks and the landlord refuses to fix it, that's a breach of the lease and potentially a housing code violation. File an HPD complaint and document everything in writing.
2. The building has central air.
If your building is built with central HVAC as a structural feature (common in post-2000 Manhattan and Brooklyn luxury buildings), the landlord must maintain it. Central air is building infrastructure, not optional. Failure to maintain it is an HPD violation.
3. The landlord has historically provided window units.
This one is trickier. In rent-stabilized apartments, if a landlord has been providing window AC units as part of the tenancy, removing or failing to replace them can be challenged. It's not an automatic legal obligation, but it's worth contesting through DHCR (the state's Division of Housing and Community Renewal) if you're rent-stabilized and the landlord suddenly stops.
Installing Your Own Window AC Unit
If the landlord isn't providing AC and your lease doesn't include it, you can install your own window unit — but with conditions.
NYC law does not prohibit tenants from installing window air conditioners in most apartments. Under longstanding housing court precedent (and confirmed by the NYC Administrative Code), a landlord generally cannot prevent a tenant from installing a window AC unit if it doesn't damage the building or present a safety hazard. However:
Your lease may include an AC restriction clause. Check it. Some landlords include language requiring written approval or prohibiting through-wall units. Through-wall installation does require landlord consent because it involves modifying the building.
You may owe additional electricity costs. Some leases allow landlords to charge tenants for the added electrical load of a window AC. Verify whether this applies to you before installing.
Co-op buildings have their own rules. Co-op house rules can restrict window unit installation. Check with your building management before buying.
What to Do If Your AC Broke and Your Landlord Won't Fix It
If AC is included in your lease or provided by the building and it's not working, here's the escalation path:
Step 1: Put it in writing. Text or email isn't legally sufficient in all cases — send a written request by email and follow up with a certified letter. Create a paper trail from day one.
Step 2: File an HPD complaint. Call 311 or go to nyc.gov/hpd. Select "apartment conditions" and file for "no heat or hot water" (if it's within heat season) or a general housing code complaint for equipment failure. HPD inspectors can issue violations.
Step 3: Escalate in housing court. If the landlord has been issued violations and still hasn't fixed the AC, you have grounds to bring an HP Action in housing court — a proceeding that compels repairs. You can do this without a lawyer.
Step 4: Rent stabilized tenants: file a complaint with DHCR. If you're in a rent-stabilized apartment and the landlord is not maintaining agreed services, file a Reduction of Services complaint with DHCR. This can result in a rent reduction.
The Portable AC Option
If you're in a situation where you can't install a window unit — older building windows, landlord objections, no outside-facing window in a particular room — a portable air conditioner is a legitimate alternative.
Portable units vent through a standard sliding panel that fits in most windows without permanent installation and without requiring landlord approval in most cases. They've improved significantly in the last few years.
Sylvane is one of the best-stocked retailers for portable and window AC units, with a range of BTU ratings, brands (LG, Whynter, Friedrich, Frigidaire), and detailed room-size guides to help you pick the right unit. They ship to all five boroughs and typically stock up early in the season — worth browsing now before the late-April sellout rush.
Borough-Specific Notes
Queens: Most of Queens's housing stock predates central air. Attached homes, garden apartments, and older co-op buildings in Jamaica, Flushing, Jackson Heights, and Astoria rely heavily on window units. Know your lease terms — many landlords in Queens add informal "you pay for AC electricity" language that may not be legally enforceable if it wasn't in your original lease.
Brooklyn: The brownstone rental market has a patchwork of AC situations. Ground-floor garden units and basement apartments are often cooler but poorly ventilated. Upper-floor floor-throughs in Bed-Stuy, Crown Heights, and Flatbush get brutal in July without window units.
The Bronx: Heat illness hospitalizations in the Bronx are among the highest in the city. If you're in a rent-stabilized building and your landlord is not maintaining cooling equipment they've historically provided, file with DHCR immediately. Legal aid resources through the Bronx Housing Court can help.
Manhattan: Newer buildings above 96th Street and throughout Midtown and FiDi mostly have central air built in. Pre-war buildings in the Upper West Side, Harlem, and Inwood rely entirely on window units. Check your lease and your building's electrical capacity before buying a high-BTU unit.
Staten Island: Single-family homes dominate. If you're renting a full home, the AC situation is usually explicitly spelled out in the lease. Review it now — June is too late.
What to Do Right Now, in March
Don't wait for the first 90-degree day. That's when stores sell out, prices spike, and your landlord suddenly becomes unavailable.
Review your lease. Find the exact language about AC. Take a photo of it.
Test any existing AC units in your apartment. If they're provided by the landlord and broken, report it now — in writing.
Measure your rooms and check BTU requirements if you're buying your own unit (a 150-square-foot room needs roughly 5,000 BTU; a 350-square-foot room needs 8,000–10,000).
Call 311 or use the HPD app to check your building's open violations. It's public record and takes two minutes.
Summer in NYC is not optional. The heat is coming. Get ahead of it.
The Metro Intel covers housing law, neighborhood intelligence, and money topics for New Yorkers across all five boroughs. Questions or tips? themetrointel.com