Source: Esri World Imagery · Esri, Vantor, Earthstar Geographics, and the GIS User Community
The ring marks the property's mapped location. Imagery dates vary; this is not a live photo. Street View opens the nearest available street-level panorama.
On the risk map
The searched building is highlighted with a ring;
the color around it is its neighbors' estimated winter risk.
Open the full map ↗
The map loads when
this panel comes into view. If it does not, open the full map above.
Draft a notice
A starting point built from the numbers on this
page. You edit it and send it yourself: nothing is sent from this site.
Call 311 (or file at portal.311.nyc.gov) and
give your name and apartment number: since October 1, 2026, HPD must attempt an
inspection for every non-anonymous heat complaint. From October 1 to May 31 landlords
must keep apartments at 68°F by day when it is below 55°F outside, and 62°F
overnight. This page describes the building's record; it is not an accusation.
How accurate is this number?
Verified on last winter, which the model never trained on —
grouped by what we predicted vs what happened:
we said
buildings
actually failed
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Getting started
Map and risk
Data and privacy
Accounts and alerts
What to do
How HeatAhead works
1
Check the weather
Forecasts show when freezing weather is expected.
2
Look at past problems
Past complaints, violations and building records help the model estimate heating risk.
3
Choose what to do
Tenants and owners can review a building. Inspectors can see which places the model suggests checking first.
A student project by NYU Tingineers for the IBM Z Datathon. The model work ran on IBM LinuxONE. HeatAhead is independent of NYC311 and HPD.
Read the map
Color shows winter risk
Darker blue means higher estimated risk. A hexagon shows the average score of the properties inside it. Zoom in to see each property's colored dot.
Height shows past complaints
Taller hexagons mean more heating complaints were recorded last season. They don't show the number of buildings or their actual height.
Click a hexagon
You'll see a list of buildings, with higher scores first. Use Next to see more. Click a building in the list to open its record.
Zoom in for a closer look
The city view uses larger hexagons so it's easier to read. Zoom in to see smaller areas, then colored dots for each property. Gray building shapes come from the background map. One property record can cover more than one building.
Winter risk covers the whole season. Cold-day risk looks at a shorter period around freezing weather. They cover different lengths of time, so the numbers can be different.
See how it was checked
On a building's page, open How accurate is this number? It compares predictions with what happened in a winter the model wasn't trained on. This helps check the model overall, but can't say for sure what will happen to one building.
A high score doesn't mean the heat has failed. A low score doesn't rule out a problem.
Some heating problems never get reported, so they may be missing from the records.
From 20% up, scores are shown as ranges. No score goes above 99%.
If a building has no score, we don't have an estimate for it. It can still have heating problems.
Check your building's history and the available owner details. Sign in to save a building for email alerts. Emails also need the team's alert service to be running.
We use public NYC records about buildings, heat complaints, violations, owners and boilers, along with weather data. Some records may be missing or out of date. A complaint means someone reported a problem; it doesn't mean an inspector confirmed it.
The map is about buildings, not individual tenants. Saving a building for alerts links it to your verified email. HeatAhead doesn't see your Google password. Owner and agent details come from public business records.
When you sign in with Google, we receive only your verified email address, your name and Google's account id for you; we keep no Google access tokens and ask for no Drive, Gmail or contacts access. An email sign-in link uses your address the same way. Your saved buildings, alert choices and dashboard panels are stored on the team's own server and are never sold or shared. You can remove a saved building or stop every alert from your profile at any time, and signing out clears the sign-in cookie on that device.
The help chat uses published answers. It can suggest close matches when a question is unclear or has a typo. Common questions stay on your device. If AI matching is enabled, an unfamiliar question and the previous help topic may be sent to a provider to suggest a published question. Your Google account details and earlier messages aren't included. We don't save guide chats in this app. Please leave out passwords, contact details and apartment numbers.
The photos were taken earlier; they aren't live. The guide can show you where to go. Sending a message, reporting a problem or changing alerts is still up to you.