What the New York Heating Law Actually Requires
The New York Heating Law — technically known as Local Law 5 of 1959, though nobody outside the legal world calls it that — mandates that landlords maintain specific minimum indoor temperatures during heating season. The law is enforced by the Department of Housing Preservation and Development (HPD), and it applies to almost all residential units across the five boroughs. Here are the numbers you need to know. Between 6:00 AM and 10:00 PM, when it is below 55 degrees outside, your landlord must keep your apartment at a minimum of 68°F. Between 10:00 PM and 6:00 AM under the same outdoor conditions, the minimum drops to 62°F. These are floor standards, not recommendations. If your apartment reads 67°F at 8:00 in the morning in February, that is a violation, period. There is a nuance most tenants miss: the law requires the temperature to be measured at least three feet above the floor and two feet away from any exterior wall or window. If your landlord or an inspector measures near the radiator itself, the reading will be artificially high and won't reflect the actual living space. I have seen cases where a room registered 71°F at the radiator but only 64°F two feet away from it, and the tenant was left in the dark about their rights because they didn't know where to place the thermometer.
How to File a Complaint Under the New York Heating Law
The first step is usually to notify your landlord in writing. Email works, but certified mail with return receipt requested is the standard because you need proof of the date they received it. Keep a copy of everything. This documentation matters more than people realize — HPD will ask when you reported the issue and how, and vague memories don't hold up. If the landlord doesn't respond within a reasonable timeframe or the heat doesn't come back on, call 311. You can also file online through the HPD website. The 311 system assigns a case number. That case number is your primary tracking mechanism. Write it down immediately. I had a tenant once who kept calling 311 repeatedly over three days because she never wrote the case number down, and the inspector had no way to link the follow-up calls to the original complaint. The inspector literally had no record of her earlier reports and treated it as a first-time complaint with no history. When the inspector comes out, be present if you can. Bring your own thermometer. I always tell people to buy a simple digital thermometer from a hardware store for around fifteen dollars and keep it in the main living area. When the inspector arrives, show them your reading and point out where you normally sit or sleep. Inspectors are overworked and generally friendly, but they can only verify one data point per visit. If your thermometer disagrees with theirs, having your own consistent baseline gives you leverage.
What Happens After a Violation Is Issued
HPD issues a violation and a penalty. The penalty structure changed a few years ago and the amounts scale based on how many prior violations the landlord has. For a first-time offense, you are typically looking at fines in the range of several hundred dollars per violation. Repeat offenders see those numbers escalate quickly. A landlord with multiple heat violations in a single season can accumulate penalties that exceed the cost of actually fixing the boiler. There is a common misconception that filing a heat complaint will trigger immediate rent abatement. It does not. Rent reduction requires a separate housing court proceeding or a settlement negotiated through the Housing Court. HPD's enforcement is administrative — they fine the landlord and order repairs. They do not adjust your rent. If you want money back or a rent reduction, you go to housing court, and that process can take months depending on the docket. I dealt with a case where the superintendent told the tenant that filing a 311 complaint would cause his rent to go up by fifty dollars a month. That is not how it works. The law prohibits retaliatory increases based on a good-faith complaint. But tenants often back down when they hear that kind of thing, and the landlord gets away with substandard heat for another season. It is one of the most frustrating patterns I see repeatedly.
Get the Full Details
Edge Cases and Practical Problems
The law has gaps. Historic buildings with special preservation restrictions sometimes fall into a gray area where the heating system cannot realistically meet the 68°F standard without violating preservation codes. In those cases, HPD may issue a compliance schedule rather than an immediate violation. This does not mean the tenant is out of luck, but it does mean the enforcement timeline is different and you need to understand what your building's specific exemption status is. Another issue is the definition of "heating season." The law covers the period from October 1 through May 31. But the temperature thresholds only kick in when the outdoor temperature drops below 55°F. So if it is January and it stays at 60°F outside all week, technically the landlord is not required to turn the heat above the normal ambient level. This catches people off guard. They assume the law applies regardless of outdoor conditions, and it does not — the 55-degree outdoor threshold is the trigger. I encountered a building where the landlord installed individual space heaters in units that consistently ran cold instead of repairing the central boiler. This is a workaround that some landlords try, and it is not legal. The law requires the heating system serving the building to maintain the prescribed temperatures. Portable heaters do not count as compliance. If you are in that situation, document it thoroughly and include it in your 311 complaint. The inspector should cite it as a separate violation.
There is also the problem of new construction or recently renovated units where the landlord claims the heating system meets code but the units are still cold. Building code compliance and the Heat Law are two different standards. A system can pass inspection and still fail to deliver adequate heat in practice. HPD inspects under the Heat Law, not the building code. If you believe your unit fails the temperature standard regardless of what the certificate says, file the complaint and let HPD determine it.
Resources
HPD's official page on the heat law provides the full text and FAQs. You can find it by searching for "HPD heat law" or going directly to the nyc.gov website and looking under the Housing Preservation and Development section. The 311 complaint portal is also accessible through the same site if you prefer not to call. If you need legal assistance, the Bronx Legal Help hotline and the Queens Legal Help line both handle heat complaints free of charge. They cannot represent you in court unless you qualify, but they can walk you through the process and help you understand what to expect. For low-income tenants, the Housing Court Express self-service center on 80 Centre Street in Manhattan can help you fill out the paperwork for a rent reduction claim if you decide to go that route. The law exists to protect tenants, but it is not self-enforcing in a way that benefits you automatically. Filing a complaint gets the landlord fined and the heat fixed, but it does not put money in your pocket or guarantee the next winter will be better. Understanding the limits of what the law can do for you is as important as knowing what it requires from your landlord.
