An HPD heat violation is fixed in 9 days, or it is not fixed at all.

median from inspection to accepted certification, across the 72,671 Class C heat and hot water violations on the record that carry one

The city's standard for a Class C HPD heat violation is 24 hours. The record measures 9 days at the median, and that is the kinder half of the finding. Of the 148,537 Class C heat and hot water violations HPD has recorded since August 7, 2023, 48.9% have ever been certified corrected, and 47,670, 32.1%, have been open for more than a year with no certification on file. A heat violation on this record clears quickly or it does not clear.

What the 24-hour standard measures out to

The standard sets the clock at a day. The record's midpoint is 9 days, and for 32.1% of Class C heat violations there is no certification on file at all more than a year after the inspection. Class C is 94.3% of every heat and hot water violation HPD issues, so the class that carries the 24-hour window is the one nearly every heat violation lands in. The standard against the measured median, year by year, is on the research page that froze these figures on August 29, 2026; this page re-measures them at every deploy.

Where heat violations stop

3,630 heat and hot water violations, 2.3% of the record, carry Not Complied With: the certify-by date passed and a reinspection found the condition still there. That figure understates the open work, because a case nobody reinspects never reaches it. 34,015 violations sit at NOV Sent Out with no later status at all: the notice went out, and the record has nothing to say about what happened next.

Every status HPD has recorded against a heat or hot water violation, most common first, out of 157,574. Status names link to the status glossary.

Heat season on the record

Heat season runs October 1 through May 31 by the city's housing maintenance code. Eight months of twelve is two thirds of a year, so a share alone proves nothing; the rate is the finding. A month inside the season averages 16,927 heat and hot water violations against 5,108 outside it, 231% heavier, measured across the last 36 complete months so every calendar month is observed the same number of times. A firm that plans its heat work in September is planning for the heavier two thirds of its year; an owner whose boiler is marginal in September has about four weeks before the inspections start. The October turn, month by month, and this season's live count.

How heat compares with the other five categories

Certification rate is the share of a category's Class C violations that have ever been certified corrected. Heat and hot water ranks 2 of 6 on it, at 48.9%. Vermin and pests leads at 51.5%. Speed ranks the six differently from rate: heat's 9-day median is the shortest of the six, against 35 days for lead paint. The gap between heat and the categories above it is not speed, it is the 32.1% that never move at all.

Same scan behind the certification block on all thirty borough and category pages, read citywide. Median days is the citywide median over every certified Class C violation in the category. The six categories are independent text matches rather than a partition of the record: a violation naming both a leak and mold is counted under both, so these rows do not sum to HPD's total.

Heat violations by borough

Bronx carries 35.4% of the city's heat and hot water violations on this record, 55,712 of 157,574. It also certifies the largest share of its Class C heat violations, 55.1%, so on this refresh volume and certification run together. Each borough's own heat page carries the monthly series, the street list and the status ladder for that borough alone.

Bronx, Brooklyn, Manhattan, Queens, Staten Island.

Common questions about HPD heat violations

What this record does not tell you

It does not say whether the heat came back. A violation at NOV Sent Out may have been corrected the same afternoon with no certification ever filed, or never corrected at all, and the public record does not distinguish the two. It does not carry the temperature that was measured, the date the boiler was repaired, or what any owner intended. It says when an inspector confirmed the condition, what status HPD has recorded since, and whether a certification was accepted. That is enough to know whether a building's record is moving, and no more.

Aggregates only. No building and no owner is named on this page. Every figure queried at this deploy from our own copy of HPD's Housing Maintenance Code Violations dataset, inspections recorded August 7, 2023 through September 9, 2026. Source: NYC Open Data. How every figure here is counted.