In New Jersey, landlord heat requirements set a minimum indoor temperature of 68°F during the day and 65°F at night throughout the heating season, which runs October 1 through May 1 for one- and two-unit rentals and through May 15 for buildings with three or more units. Two overlapping state codes carry these rules, and a landlord can only shift heating responsibility to a tenant under narrow conditions. If your heat fails, you have several routes: a written demand to the landlord, a complaint to housing inspectors, and, as a last resort, court-supervised rent withholding or a repair-and-deduct remedy.
The Temperature Standard and Heating Season
The daytime minimum is 68°F between 6:00 a.m. and 11:00 p.m. The nighttime minimum is 65°F between 11:00 p.m. and 6:00 a.m. Those thresholds apply in every habitable room.
Which code sets your season depends on the size of the building. For buildings with three or more units, the Hotel and Multiple Dwelling Code (N.J.A.C. 5:10) runs from October 1 through May 15.1Cornell Law School. NJ Admin Code 5:10-14.4 – Minimum Temperature For one- and two-unit rentals, the State Housing Code (N.J.A.C. 5:28) uses the same temperatures but ends May 1. The State Housing Code is a model code that municipalities choose whether to adopt, so if your town hasn’t adopted it, a local housing or health code applies instead, and local codes can set stricter standards.2Legal Services of New Jersey. Your Right to Safe and Decent Housing
One measurement detail matters if the temperature is disputed. The legally required reading is taken at least one foot from any exterior wall, at the coldest occupied area of the room. A reading right against a drafty window doesn’t reflect the standard.3Cornell Law School. NJ Admin Code 5:10-14.1 – Standard of Performance
When a Lease Can Put Heat on the Tenant
In smaller buildings, the landlord supplies heat unless the lease explicitly makes the tenant responsible. For buildings with three or more units, the rule is much tighter. The Multiple Dwelling Code requires the owner to supply fuel and maintain the heating system regardless of what the lease says, unless all three of these are true:
- The tenant agrees in writing to supply their own heat.
- The unit has its own exclusive heating equipment, not shared with other units.
- The energy source for that equipment can be individually metered and billed to the tenant.
If your building runs on a central boiler serving multiple units, your landlord cannot contractually push heating costs onto you, no matter what the lease says.1Cornell Law School. NJ Admin Code 5:10-14.4 – Minimum Temperature
What to Do the Moment Your Heat Fails
Start with the basics. Confirm the thermostat is set to “heat” and turned up. Check for a tripped breaker. If your unit has a pilot light, see whether it went out. Two minutes here rules out the most common false alarms.
If it isn’t something you can fix yourself, notify your landlord immediately and put it in writing. An email or text creates a timestamped record. A phone call is fine for urgency, but follow up the same day with something written. From that point, keep a log: date and time of the failure, thermostat photos, every message sent and received. This becomes your evidence.
Give the landlord a reasonable window to respond. New Jersey law doesn’t fix a specific number of hours. A broken furnace during a January cold snap demands faster action than a thermostat glitch in early October. Courts look at the severity, the outdoor temperature, and whether children, elderly tenants, or people with health conditions are affected.
Filing a Complaint With Housing Inspectors
If the landlord doesn’t act within a reasonable time, who you call depends on your building.
For one- and two-unit rentals, enforcement is local. Contact your municipal housing inspector, building inspector, or board of health through city hall or your municipal building.2Legal Services of New Jersey. Your Right to Safe and Decent Housing Many local boards of health can arrange emergency heating repairs when the outdoor temperature drops below 55°F. In those cases, the board typically waits 24 hours after confirming the landlord hasn’t acted before sending someone.
For buildings with three or more units, the New Jersey Department of Community Affairs (NJDCA) Bureau of Housing Inspection enforces the Hotel and Multiple Dwelling Code and can issue citations, penalties, and violation orders.4New Jersey Department of Community Affairs. Bureau of Housing Inspection The Bureau’s number is (609) 633-6229. Have your full address, the landlord’s name and contact information, and your documentation log ready. After a complaint, the agency generally schedules an inspection; a confirmed violation leads to orders and fines that continue until the problem is corrected.
Rent Withholding and Repair-and-Deduct
When complaints don’t resolve things fast enough, two self-help remedies exist. Both carry real risk if you don’t follow the rules precisely.
Rent Withholding
You can withhold rent over a habitability problem like no heat, but you cannot simply stop paying. All rent due has to be deposited with the court. To succeed, you must be able to show a judge, with photos or other evidence, that the unit is uninhabitable, that you notified the landlord and gave them a chance to fix it, and that you didn’t cause the problem yourself.5NJ Courts. Landlord/Tenant
One point tenants get wrong: a habitability defense only works against a nonpayment eviction. It won’t save you if the landlord is evicting for another reason, like a pattern of late payments or lease violations. If the landlord does file for nonpayment and you offer to pay all rent due plus court costs before or on the hearing date, the landlord must accept it and the case is dismissed.5NJ Courts. Landlord/Tenant
Repair and Deduct
New Jersey courts recognize a repair-and-deduct remedy. You can hire someone to fix a vital deficiency, like a broken furnace, and deduct the cost from your rent.6New Jersey Department of Community Affairs. Habitability Bulletin You must have notified the landlord first and waited a reasonable amount of time. What counts as reasonable shrinks when the outdoor temperature is dangerously cold.
Both remedies are areas where mistakes lead to eviction filings. Withholding rent without depositing it with the court, or deducting repair costs without proper notice, makes you look like a tenant who simply didn’t pay. Talking to an attorney before taking either step is worth the cost of the conversation. Legal Services of New Jersey (1-888-576-5529) provides free legal help to qualifying tenants.
Protection Against Retaliation
Some tenants hesitate to report heating violations because they worry about being evicted for complaining. New Jersey’s Reprisal Law (N.J.S.A. 2A:42-10.10) directly addresses that. A landlord cannot serve a notice to quit or take action to evict you as retaliation for:
- Efforts to secure or enforce any rights under your lease or under state or federal law.
- A good-faith complaint to a government authority about a violation of any health or safety law, code, or regulation.
- Being a member of, or participating in, any lawful tenant organization.
- Refusing to accept substantially changed lease terms that the landlord imposed as payback for any of the above.
One procedural requirement applies to the reporting protection: you must first bring the complaint to the landlord and give a reasonable time for a fix before going to a government agency.7New Jersey Department of Community Affairs. Reprisal Law NJSA 2A:42-10.10 Through 10.14 This is another reason to start with written notice. It starts the clock on the landlord’s repair window and protects your retaliation claim if the situation escalates.
Help With Heating Costs If the Bill Is Yours
When the lease properly puts heating costs on the tenant, the problem shifts from enforcement to affordability. The federal Low Income Home Energy Assistance Program (LIHEAP) helps eligible households pay heating bills, with income thresholds set within federal limits.8LIHEAP Clearinghouse. LIHEAP Income Eligibility for States and Territories In New Jersey, applications are typically handled through county welfare agencies and community action organizations, and the program can send one-time payments directly to your utility company or fuel supplier. If you’re facing a shutoff notice or a broken heating system you’re responsible for, emergency LIHEAP assistance may be available on an expedited basis. Contact your county Board of Social Services or call 211 for referrals.