NYC Heat Season 2026: Boiler Compliance Checklist

Radiators are about to start clanking across the five boroughs. For tenants, that’s just autumn. For building owners, it’s a legal deadline with a dollar amount attached.

NYC heat season runs October 1 through May 31, and it comes with two separate obligations: keeping apartments at a legal temperature, and keeping the boiler that produces that heat inspected, filed, and compliant with the city. Miss either one, and you’re looking at HPD violations, DOB penalties, or both.

This guide breaks down exactly what’s required for the 2026–2027 NYC Heat Season, which law actually covers your boiler, and a checklist you can run through before October 1.

When Does NYC Heat Season Start and End in 2026?

NYC Heat Season begins October 1, 2026 and runs through May 31, 2027. During these eight months, every residential building in New York City must meet two temperature thresholds:

• Daytime (6 a.m.–10 p.m.): Indoor temperature must stay at or above 68°F whenever the outdoor temperature drops below 55°F.
• Nighttime (10 p.m.–6 a.m.): Indoor temperature must stay at or above 62°F, regardless of what it’s doing outside.
• Hot water: Must be delivered at a minimum of 120°F, every day of the year — not just during NYC Heat Season.

These requirements come from the NYC Housing Maintenance Code (HMC §27-2029) and are enforced by the Department of Housing Preservation and Development (HPD). If a tenant reports a heat complaint that HPD verifies, the violation and any resulting penalty land on the owner — not the super, not the management company.

Don’t Confuse Local Law 23 With Your Boiler Obligations

If you’ve searched around and landed on “Local Law 23,” it’s worth clearing up: Local Law 23 of 2026 is the “Cool Homes For All” law, and it deals with summer cooling — it requires owners to install and maintain an approved cooling system in sleeping rooms when a tenant requests one. It has nothing to do with winter heat or boiler inspections, and its enforcement timeline stretches out to 2030. You can read the full text of Local Law 23 of 2026 if you want the source language.

The law that actually governs your heating equipment is Local Law 62 of 1991, still the operative rule for annual boiler inspections in New York City. Knowing the difference matters, because a contractor or vendor who quotes you “Local Law 23 boiler work” is either confused or, worse, trying to sell you something you don’t need.

Local Law 62: The Boiler Inspection Law Behind Heat Season

Local Law 62/91 requires owners of covered buildings to have their boilers inspected once every calendar year and to file the report with the Department of Buildings.

Who’s covered:

• Residential buildings with six or more apartments
• Any building with commercial space
• Mixed-use buildings combining the two

Who’s exempt:

• Residential buildings with five units or fewer
• A single boiler serving only one dwelling unit

What the inspection covers: A licensed inspector — a Licensed Master Plumber, a Licensed Oil Burner Installer, or an authorized boiler insurance company — checks safety valves, pressure controls, fuel lines, venting, and the general structural condition of the boiler.

Filing requirements:

• The inspection report must be filed electronically through DOB NOW: Safety within 14 calendar days of the inspection date.
• Any defects found must be corrected within 90 days of the inspection.
• Once corrections are made, an affirmation of correction must be filed within 14 days.

Penalties for missing the deadline:

• $50 per month, per boiler, up to $600 for late filing
• A flat $1,000 penalty per boiler if the report is never filed

A boiler tune-up is not the same thing as a Local Law 62 inspection. Maintenance keeps the equipment running; only a filed DOB NOW report satisfies the legal requirement. If you’re not sure whether your last service visit counted, check for a filed record — don’t assume.

2026 NYC Heat Season Boiler Compliance Checklist

Run through this before the season starts:

• Schedule your annual boiler inspection before October 1. Waiting until the first cold snap means competing with every other building owner in the city for inspector availability.
• Confirm your inspector is qualified — a Licensed Master Plumber, Licensed Oil Burner Installer, or authorized insurance company, not just “someone who’s good with boilers.”
• File the inspection report in DOB NOW: Safety within 14 days. Late filings start accruing penalties immediately.
• Correct any flagged defects within 90 days, then file your affirmation of correction on time.
• Verify DEP boiler registration (CATS) if your equipment falls under the size threshold — this is a separate filing from the DOB inspection.
• Test thermostats and sensors in common areas and representative units to confirm the system actually hits 68°F/62°F under the required conditions.
• Keep a temperature and maintenance log. If a heat complaint escalates to an HPD inspection, documented readings are your best evidence of compliance.
• Confirm hot water output stays at 120°F at the tap, year-round — this is checked separately from heat.

Building owners managing multiple properties often hand this off entirely. OneViewNYC Inspections, for example, coordinates the inspection, the DOB NOW filing, and the correction timeline as one package — which removes the most common failure point: someone gets the boiler looked at, but nobody actually files the paperwork.

What Happens If You Miss a Requirement

Two different penalty tracks apply, and they stack independently.

Heat/hot water violations (HPD):

• $250–$500 per day for a first violation
• $500–$1,000 per day for a repeat violation at the same building within two consecutive heat seasons

If an owner doesn’t restore heat after a violation is issued, HPD’s Emergency Repair Program can send a private contractor to fix it and bill the owner — plus fees.

Boiler inspection violations (DOB):

• $50/month per boiler (capped at $600) for late filing
• $1,000 per boiler for failure to file at all

Run both tracks at once — an unfiled boiler inspection plus a resulting heat outage — and a single building can accumulate violations from two different city agencies in the same week.

Why Proactive Compliance Is a Business Decision, Not Just a Legal One

For a portfolio owner, the math is simple. An annual boiler inspection costs a fraction of what a single HPD heat violation does, and it costs almost nothing compared to an Emergency Repair Program bill for a mid-January boiler failure.

There’s also the tenant-retention side of it. A building with a documented, on-time compliance history has fewer 311 complaints, fewer disputes at renewal time, and a cleaner record if the property ever goes to sale or refinance — lenders and buyers check HPD and DOB violation history as a matter of course.

Treat the October 1 deadline the way you’d treat a lease renewal or a tax filing: fixed, recurring, and non-negotiable.

Heat season enforcement moves fast once October hits. Getting the inspection scheduled and filed before the deadline is the difference between a routine compliance task and a preventable violation.

Sources

• NYC Department of Housing Preservation and Development, Heat and Hot Water Information — nyc.gov/site/hpd
• NYC Department of Buildings, Boiler Compliance — nyc.gov/site/buildings
• NYC Local Law 23 of 2026 (Cool Homes For All) — codelibrary.amlegal.com
• NYC 311 Service Portal — portal.311.nyc.gov