Chapter II of the MA State Sanitary Code (105 CMR 4 10), often referred to as the "housing code," requires that residential property owners provide functioning heating systems that are capable of heating habitable spaces to minimum temperatures of 68° daytime (7AM-11PM) or 64° nighttime (11:01PM-6:59AM).
Alert your landlord first to correct "no heat" or insufficient heat problems. If your landlord does not respond, please call the Inspectional Services Department at 617-635-5300 during normal business hours 8AM-4PM Monday-Friday. After hours, you can contact the 24-Hour 'No Heat" response team via the Mayor's Hotline at 617-635-4500.