The city's seen a wave of complaints over lack of heat the last few days.
Nearly 6,000 people called 311 earlier this week about their freezing apartments.
The most complaints came on Wednesday with more than 2,700 logged.
On average, the city spends about $10 million a year on quick heat fixes for tenants.
The bills are then sent to their landlords.
In the winter, landlords are required to keep homes at 68 degrees during the day and 62 degrees overnight during freezing temperatures outside.
The city says if you have a heating issue, contact the property owner before calling 311.