Last updated 2026-07-26
TL;DR
Chicago's heating ordinance requires landlords to supply heat from September 15 through June 1 each year. Daytime (8:30am-10:30pm) indoor temps must hit at least 68°F when it's under 65°F outside, and 66°F overnight. Fines run $500 to $1,000 per day per violation under the Chicago Municipal Code.
When does Chicago require landlords to turn on the heat?
Chicago's heating season runs September 15 through June 1, every single year, no exceptions for warm spells. This isn't a guideline landlords can interpret loosely. It's written into the Chicago Municipal Code as a hard date range, and it applies whether or not there's a specific cold snap happening in October or a freak warm week in April. Under Chicago Municipal Code 5-12-140, "between September 15 of each year and June 1 of the following year," residential building owners have to maintain minimum temperatures whenever outdoor temps drop below certain thresholds [1]. The ordinance doesn't care what the forecast says on September 14. Once September 15 hits, the heat has to be available and working. A lot of new landlords assume this is about the weather. It's actually about the calendar. You could have a mild 70-degree day in late September, and technically the requirement to have heat available still applies during that window if temperatures drop enough within it. The city set fixed dates precisely because Chicago weather is unpredictable, and waiting for tenants to complain about cold before turning on a boiler creates real safety risk, especially for older adults and small children.
What temperature does Chicago law require inside a rental unit?
Chicago requires 68°F during the day and 66°F at night, but only when it's cold enough outside to trigger the rule. The ordinance ties indoor minimums to outdoor conditions, not a flat standard that applies 24/7 regardless of weather. Specifically, Chicago Municipal Code 5-12-140 requires that between 8:30 a.m. and 10:30 p.m., if the outside temperature falls below 65°F, the inside temperature of every room must be at least 68°F. Between 10:30 p.m. and 8:30 a.m., if the outside temperature falls below 65°F, the inside temperature must be at least 66°F [1]. Here's the practical version: if it's 60°F outside at 2pm in October, tenants are entitled to at least 68°F inside. If it's 50°F outside at 1am in January, the minimum drops to 66°F. If it's 70°F outside, the rule doesn't kick in at all because the trigger condition (below 65°F outdoors) isn't met. Some landlords get tripped up thinking there's one number to hit. There isn't. It's a sliding requirement based on both the clock and the thermometer, and code enforcement inspectors check both when they respond to a complaint.
What happens if a landlord doesn't provide heat on time in Chicago?
Fines for heat violations in Chicago run $500 to $1,000 per day, per offense, under Chicago Municipal Code 5-12-250 [2]. Each day the violation continues can count as a separate offense, so a heat outage that drags on for a week can generate a stack of daily fines rather than one flat penalty. The city treats heat complaints as urgent for good reason. Chicago's Department of Buildings responds to heat complaints through 311, and inspectors can visit within days, sometimes faster during a cold snap when the call volume spikes. If an inspector confirms a violation, the building owner gets cited and the case moves through the Department of Administrative Hearings. Beyond the municipal fine, tenants in Illinois also have remedies under Illinois law. Tenants can pursue actions for constructive eviction or breach of the implied warranty of habitability if a landlord fails to provide essential services like heat, though the exact remedy depends on the lease and the specifics of the case. If you're a landlord facing a heat complaint, don't wait for the citation. Fix the boiler, space heater situation, or gas line issue immediately. The daily fine structure means costs stack up fast, and a $500-a-day problem left unresolved for two weeks can hit five figures.
Does the heat rule apply to all rental buildings in Chicago?
The heating ordinance applies broadly to residential rental buildings in Chicago, including buildings covered by the Chicago Residential Landlord and Tenant Ordinance (RLTO). It's not limited to large apartment complexes. Single-family rentals, two-flats, and small multi-unit buildings all fall under the same heat-supply rules if the landlord (rather than the tenant) controls the heating system. There's a wrinkle worth knowing: if a tenant has their own separate furnace or heating unit that they control and maintain themselves (common in some owner-occupied two-flats where each unit has its own furnace), the responsibility can shift depending on the lease terms. But in most rental scenarios where the landlord owns and controls the central heating system, the landlord is the one on the hook. Condo and co-op buildings with rental units follow the same general rule if the landlord (unit owner or association, depending on the lease) controls the heat source. If you're unsure whether your building's setup counts, confirm with the Chicago Department of Buildings before assuming an exemption applies. Landlords in mandatory rental registration cities like Chicago should treat heat compliance as part of a broader inspection-readiness checklist, alongside smoke detectors, egress requirements, and other health and safety items. If you're prepping for a rental inspection more broadly, our City Rental License & Inspection Prep Packet walks through the common items Chicago inspectors flag, heat included.
Can a tenant withhold rent if the landlord doesn't provide heat?
Under the Chicago RLTO, tenants may have the right to withhold rent, terminate the lease, or seek damages if a landlord fails to provide essential services like heat, but the specific process has strict notice and documentation requirements. This is not a self-help remedy tenants should improvise without understanding the rules, and it's not something landlords should assume tenants will get wrong either. The Chicago RLTO (Municipal Code Chapter 5-12) generally requires a tenant to give the landlord written notice of the problem and a reasonable opportunity to fix it before pursuing remedies like rent withholding or lease termination [1]. What counts as "reasonable" for a heat outage in January is obviously much shorter than for a minor cosmetic repair; courts and the ordinance both recognize heat as an essential service. Landlords who get a written heat complaint should treat it as a 24-to-48-hour problem, not a same-week problem. If a boiler fails and parts are backordered, get space heaters into affected units immediately as a stopgap while you sort out the repair. It's cheaper than fighting a habitability claim or a stack of daily municipal fines.
How do tenants report a heat complaint in Chicago?
Chicago tenants report heat complaints by calling 311 or submitting a request through the city's 311 system, which routes the complaint to the Department of Buildings for inspection [3]. During peak cold months, particularly December through February, 311 heat complaint volume rises sharply, and the city has historically prioritized these calls given the safety risk of no heat during freezing temperatures. An inspector will typically come out with a thermometer and check both the indoor and outdoor temperature at the time of inspection, comparing it against the 68°F day / 66°F night thresholds. If the unit fails, the inspector documents it, and the case can move toward a citation. Landlords should know that a single tenant complaint can trigger inspection of common areas and potentially other units in the building too, more than the unit that complained. If your boiler is failing building-wide, expect the inspection to widen quickly.
What should landlords do to prepare before heating season starts?
Service the furnace or boiler before September 15, not after. Waiting until the first cold complaint means you're troubleshooting a heating system failure during the exact week the legal deadline hits, which is the worst possible timing. A basic pre-season checklist: have an HVAC technician inspect and service the furnace or boiler in August, check thermostats in every unit to confirm they're reading accurately, test that all radiators or vents are producing heat evenly across the building, and confirm there's no gas line or pilot light issue that could delay startup. If your building uses a shared boiler, get it serviced early since a shared system failure affects every unit at once and creates a much bigger daily fine exposure. Budget for this. A furnace or boiler tune-up typically costs a few hundred dollars, which is nothing compared to a single day of a $500-$1,000 fine per violation under Chicago Municipal Code 5-12-250 [2], let alone a multi-day outage during a cold snap. If you own a two-flat or small multifamily building and manage it yourself, put a reminder on your calendar for the first week of September every year. It's the cheapest insurance policy you'll buy all year.
How does Chicago's heat law compare to other cities?
| Chicago | Sept 15 - June 1 | 68°F (when outside <65°F, 8:30am-10:30pm) | 66°F (when outside <65°F, 10:30pm-8:30am) [1] | |
|---|---|---|---|---|
| New York City | Oct 1 - May 31 | 68°F (when outside <55°F, 6am-10pm) | 62°F (when outside <40°F, 10pm-6am) [4] | Chicago's nighttime minimum of 66°F is notably higher than New York's 62°F, and Chicago's season starts two weeks earlier. Both cities enforce these rules through code inspectors and impose daily or per-violation civil fines rather than relying purely on tenant lawsuits. If you own rentals in multiple cities, don't assume the rules transfer. Each city sets its own dates and thresholds, and mixing them up is a common mistake for landlords who operate across state lines. |
Chicago's heating season (Sept 15 to June 1) is on the longer side compared to many U.S. cities, reflecting the length and severity of Midwest winters. New York City, for comparison, runs its heat season from October 1 through May 31, and requires 68°F during the day (6am-10pm) when outdoor temps fall below 55°F, and 62°F at night when outdoor temps fall below 40°F, under the New York City Housing Maintenance Code [4]. The code states landlords "shall" maintain these minimum temperatures throughout the heat season, per Administrative Code Section 27-2029 [4]. | City | Heat season | Daytime minimum | Nighttime minimum |
What can a landlord look at during a rental inspection?
During a Chicago heat inspection or a general rental licensing inspection, inspectors typically check working smoke and carbon monoxide detectors, functioning heat sources in every habitable room, adequate egress (windows and doors that open properly), electrical safety (no exposed wiring, overloaded outlets), and structural issues like peeling paint (a lead hazard concern in older buildings) or water damage. Generally, landlords or their inspectors can look at the condition of walls, floors, ceilings, plumbing fixtures, electrical outlets, smoke detectors, windows, and heating equipment. What they typically cannot do is search personal belongings, go through closets or drawers unrelated to the inspection scope, or use a routine inspection as a pretext to look for lease violations unrelated to habitability or safety. Most cities, Chicago included, require landlords to give advance written notice before a routine inspection, commonly 24 to 48 hours depending on the local ordinance and lease terms; confirm the exact notice period with your city's rental licensing office since it varies by jurisdiction. Emergency situations, like a suspected gas leak or fire hazard, are treated differently and may allow faster entry.
Who is responsible for a rental walkthrough inspection, and does this differ by state?
Responsibility for a move-in or move-out walkthrough inspection generally falls on the landlord or property manager, though the process and legal requirements vary significantly by state. In California, for example, landlords are generally required to conduct an initial move-out inspection if the tenant requests one, giving the tenant a chance to fix any issues before the final move-out inspection and deposit deduction, under California Civil Code Section 1950.5 [5]. California Civil Code 1950.5 states that the landlord shall notify the tenant in writing of the tenant's right to request an initial inspection, and if requested, the inspection generally must occur no earlier than two weeks before the end of the tenancy [5]. This gives tenants a real opportunity to address cleanliness or damage issues before facing security deposit deductions. Other states, including Illinois, don't have a statewide law mandating a pre-move-out walkthrough, though many landlords do one anyway as standard practice to document unit condition and avoid deposit disputes. If you're a landlord operating in a mandatory rental registration city, a documented walkthrough (with photos, dated) is one of the simplest ways to protect yourself against a bad-faith deposit dispute, regardless of whether your state legally requires one.
What rights do tenants have if there's no written lease?
Tenants without a written lease still have legal rights; a lease can be oral or simply implied by the fact that rent is paid and accepted regularly, and the general rights under state landlord-tenant law and local ordinances (like Chicago's RLTO) still apply. Habitability protections, heat requirements, and basic eviction procedures don't disappear just because nothing was signed. In most states, a tenant without a written lease is presumed to have a month-to-month tenancy if rent is paid monthly. That means either party can generally end the tenancy with proper notice, though notice periods differ by state and sometimes by city ordinance. In Chicago specifically, RLTO protections around habitability, including the heat requirements discussed above, apply regardless of whether the tenancy is documented in writing. Landlords renting without written leases (common with smaller, informal rentals) are taking on real legal risk. Verbal agreements are much harder to enforce or reference during a dispute, and a landlord in this position typically has fewer options if a tenant stops paying rent or damages the unit. It's not illegal to rent without a written lease in most places, but it's rarely a good idea.
How much notice does a landlord have to give before entering or ending a tenancy?
Notice requirements vary widely by state and by the type of notice, but common patterns include 24-48 hours for routine entry to inspect or make repairs, and 30, 60, or 90 days for ending a month-to-month tenancy, depending on the state and sometimes the length of the tenancy. There's no single national standard, so landlords need to confirm the specific number with their state statute or city ordinance. For example, in Chicago, the RLTO requires landlords to give at least two days' notice before entering a unit for repairs or inspection except in emergencies. Notice periods for ending month-to-month tenancies elsewhere often scale with how long the tenant has lived there; some states require 60 days' notice if the tenant has lived in the unit longer than a year, versus 30 days for shorter tenancies. Because these numbers vary this much by state and city, don't rely on a rule of thumb from a different jurisdiction. Confirm your specific notice requirements with your city's rental licensing office or your state's landlord-tenant statute before serving any notice, since getting this wrong can invalidate the notice entirely and restart the clock.
What can't a landlord do in Ohio?
Under Ohio Revised Code 5321.04, landlords cannot shut off utilities, remove doors or windows, or otherwise use "self-help" measures to force a tenant out, even if the tenant is behind on rent; landlords must use the formal eviction process through the courts . This is sometimes called the prohibition on "self-help eviction," and Ohio, like most states, takes it seriously. Ohio Revised Code 5321.04 also requires landlords to maintain the property in a fit and habitable condition, comply with building and housing codes, keep common areas safe, and maintain electrical, plumbing, heating, and appliances supplied by the landlord in good working order . Landlords also cannot retaliate against a tenant for reporting a code violation or exercising a legal right, such as by raising rent, decreasing services, or filing eviction shortly after the tenant complains to a housing authority. If an Ohio landlord wants a tenant out, the only legal path is filing a formal eviction (forcible entry and detainer) action through the appropriate county court. Changing the locks, cutting off water or heat, or removing a tenant's belongings without a court order can expose the landlord to real liability, including potential damages the tenant can recover in court.
What is landlording, and what does it actually take to become a landlord?
Landlording is the ongoing work of owning and managing a rental property: screening tenants, collecting rent, handling maintenance and repairs, staying compliant with local ordinances (like Chicago's heat rule), and managing the legal relationship with tenants under state and local landlord-tenant law. A landlord, put simply, is the person or entity that owns a property and rents it to someone else in exchange for rent, taking on the legal responsibilities that come with that relationship. Becoming a landlord generally means: buying or already owning a property suitable for rental, checking whether your city requires a rental license or registration (many do, including Chicago in specific contexts and a growing list of other municipalities), understanding your state's landlord-tenant statute and any local ordinances like Chicago's RLTO, setting a legal, fair lease, screening tenants within fair housing law, and budgeting for maintenance, repairs, and compliance costs like inspections and licensing fees. Most new landlords underestimate the compliance side. It's more than about finding a tenant and cashing rent checks. Cities with mandatory rental licensing or registration programs (which Chicago has moved toward in various forms, and which many other cities require outright) expect landlords to register the property, sometimes pass an inspection, and keep up with rules like the heat ordinance discussed throughout this article. If you're getting a rental license notice or inspection deadline for the first time, our $79 City Rental License & Inspection Prep Packet is built specifically to walk first-time and small landlords through what a city inspector is likely to check, heat systems included.
Why do landlords require renters insurance?
Landlords often require renters insurance to shift the financial risk of a tenant's personal property loss, liability claims (like a guest getting injured in the unit), and certain damage scenarios away from the landlord's own policy and onto the tenant's coverage. It's a lease clause, not a legal mandate in most places, though some cities and states allow landlords to require it as a condition of the lease. Renters insurance typically covers the tenant's personal belongings (which the landlord's property insurance does not cover), liability if the tenant is found responsible for injury to a visitor, and sometimes additional living expenses if the unit becomes temporarily uninhabitable. From the landlord's side, requiring it reduces the odds of the landlord getting pulled into a claim or lawsuit over a tenant's lost belongings or a liability incident that the landlord's own policy wasn't designed to cover. Most renters insurance policies cost relatively little per month, which is one reason many landlords make it a standard lease requirement rather than an optional suggestion. If you require it, put it clearly in the lease and ask for proof of a policy before move-in, then keep a copy on file.
Frequently asked questions
What date does Chicago require landlords to turn on heat?
Chicago's heating season runs September 15 through June 1 each year, per Chicago Municipal Code 5-12-140. Landlords must supply enough heat to meet the required minimum indoor temperatures whenever outdoor temperatures drop below 65°F during that window, regardless of the specific weather on any given day.
What is the minimum indoor temperature required in a Chicago rental?
Chicago requires at least 68°F between 8:30am and 10:30pm, and at least 66°F between 10:30pm and 8:30am, whenever the outdoor temperature falls below 65°F. This comes from Chicago Municipal Code 5-12-140, and it applies to every room in the unit, more than common areas.
What is the fine for a landlord not providing heat in Chicago?
Fines run $500 to $1,000 per day per violation under Chicago Municipal Code 5-12-250. Because it's a daily fine, an unresolved heat outage over a week or two can add up to several thousand dollars fast, on top of any tenant remedies for habitability breach.
Can a Chicago tenant withhold rent if there's no heat?
Possibly, under the Chicago RLTO, but only after giving the landlord written notice of the problem and a reasonable chance to fix it. Tenants should not withhold rent without following the proper notice process, since doing it wrong can expose them to an eviction claim for nonpayment.
How do I report a heat complaint in Chicago?
Call 311 or file through Chicago's 311 online system. The complaint routes to the Department of Buildings, which sends an inspector to check the indoor and outdoor temperature against the legal minimums. Complaint volume rises sharply in winter months, so response time can vary with demand.
Does the Chicago heat law apply to single-family rentals and small buildings?
Yes, generally. The heat ordinance applies to residential rentals broadly, more than large apartment buildings, as long as the landlord controls the heating system. If a tenant has their own separate furnace they control, responsibility can shift; confirm the specifics with your lease and the Chicago Department of Buildings.
How to become a landlord for the first time?
Buy or convert a property, check your city's rental licensing or registration requirements, learn your state's landlord-tenant statute and local ordinances, set a compliant lease, screen tenants under fair housing law, and budget for maintenance and inspection costs. Many first-time landlords underestimate the ongoing compliance work involved.
What is landlording?
Landlording is the day-to-day and year-to-year work of owning and managing a rental property: collecting rent, handling repairs, screening tenants, and staying compliant with local ordinances like rental licensing and heat requirements. It's an ongoing responsibility, not a one-time transaction.
What rights do tenants have without a signed lease?
Tenants without a written lease still have rights under state landlord-tenant law and local ordinances, including habitability protections. Most are presumed to have a month-to-month tenancy if rent is paid monthly, meaning either party can end it with proper notice, though notice periods vary by state.
How much notice does a landlord have to give before entering a unit?
Requirements vary by city and state, but 24 to 48 hours is common for routine, non-emergency entry. Chicago's RLTO generally requires at least two days' notice for non-emergency entry. Always confirm the exact requirement with your specific city or state statute before entering.
What can a landlord not do in Ohio?
Ohio landlords cannot use self-help evictions like shutting off utilities or removing doors and windows to force a tenant out, per Ohio Revised Code 5321.04. They also cannot retaliate against tenants for reporting code violations, and must use the formal court eviction process to remove any tenant.
Who does the walkthrough inspection when a tenant moves out in California?
The landlord generally conducts it, but California Civil Code 1950.5 gives tenants the right to request an initial inspection before the final move-out, occurring no earlier than two weeks before the tenancy ends, so they can fix issues before facing deposit deductions.
Why do landlords require renters insurance if it's not legally mandatory?
Renters insurance shifts financial risk for the tenant's belongings and certain liability claims away from the landlord's own policy. It's typically a lease requirement rather than a law, and it reduces the odds a landlord gets pulled into a claim over a tenant's lost property or a guest's injury.
Sources
- Chicago Municipal Code, Chapter 5-12: Heat season dates (Sept 15-June 1) and required indoor temperature thresholds of 68°F daytime and 66°F nighttime
- Chicago Municipal Code, Chapter 5-12-250: Fine range of $500 to $1,000 per day per violation for heat ordinance non-compliance
- NYC Administrative Code Section 27-2029: New York City's heat season runs Oct 1-May 31 with 68°F daytime and 62°F nighttime minimums
- California Civil Code Section 1950.5: Tenants have the right to request an initial move-out inspection no earlier than two weeks before tenancy ends
- Ohio Revised Code Section 5321.04: Ohio landlords cannot use self-help eviction measures and must maintain habitable conditions and functioning heating systems
- City of Chicago 311: Tenants can report a heat complaint to the City of Chicago through the 311 system
- Chicago Municipal Code - Residential Landlord and Tenant Ordinance: Chicago's Residential Landlord and Tenant Ordinance outlines notice requirements for entry and termination of tenancy
- Ohio Revised Code: Ohio law establishes tenant obligations and rights that can be compared to Chicago's landlord-tenant heat requirements