No heat in freezing weather
Run through the thermostat, switch, breaker and filter checks on the furnace repair page, then call.
Answered 24 hours Mon–Fri · Sat 10–4 · Sun 10–2
Emergency HVAC Repair in Chicago
Green Leaf Heating & Cooling connects Chicago homeowners with local technicians when heating or cooling fails at the worst time: no heat in a cold snap, no AC in a heat wave, a boiler leaking across the basement floor. Call (312) 924-7223. Calls are answered 24 hours a day Monday to Friday, Saturday 10–4 and Sunday 10–2.
When the house is getting colder by the hour.
About emergency service
Emergency Heating Repair in Chicago
In a Chicago winter, a house without heat cools quickly, and pipes along outside walls can freeze within hours once indoor temperatures fall. That’s why a no-heat call on a sub-zero night is treated as urgent.
When you call, describe what’s happening and how cold the house is. You’re connected with a local technician, and while you wait you’ll get practical steps to protect the house. Most emergencies are one failed part: an igniter, a blower motor, a circulator pump, a control board.
The same goes for cooling during a heat wave, especially for older family members. Calls are answered 24 hours a day Monday to Friday, Saturday 10 a.m. to 4 p.m. and Sunday 10 a.m. to 2 p.m., Central time.
- ✓ No heat
- ✓ No air conditioning
- ✓ Leaking boilers and water heaters
- ✓ Free estimate before work starts
What counts as urgent
HVAC Emergencies in Chicago Homes
Situations where you should call right away, and the first step for each.
Gas smell
Leave the house without touching switches. Call Peoples Gas or 911 from outside first, then call for the repair once it’s safe.
Carbon monoxide alarm
Get everyone outside into fresh air and call 911. Don’t go back in until responders say it’s safe.
Boiler or water heater leaking
Turn the unit off and close its water supply valve. Move belongings off the floor.
No AC in a heat wave
Close blinds, move to the lowest floor, use fans and check on anyone vulnerable while you wait.
Frozen pipes
Open the faucet on that line, warm the pipe gently with a hair dryer, never an open flame, and keep the heat up.
While you wait
What to Do When the Heat Goes Out in Chicago
- Do the quick checks. Thermostat set to heat, furnace or boiler switch on, breaker not tripped, filter not clogged.
- Keep heat in. Close doors to unused rooms, close curtains, and roll a towel along drafty door bottoms.
- Protect the pipes. Open cabinet doors under sinks on outside walls and let a pencil-thin trickle run from faucets on exterior walls.
- Use space heaters carefully. Plug them directly into a wall outlet, never an extension cord, and keep them three feet from anything that burns.
- Never heat with an oven or a grill indoors; both can produce carbon monoxide.
More detail in how to keep pipes from freezing when the heat goes out.
Renting in Chicago?
Chicago’s heat ordinance requires landlords to supply heat from September 15 through June 1, with at least 68°F inside during the day and 66°F at night. If your landlord isn’t responding, call 311 to report it.
Emergency FAQ
Emergency HVAC Questions From Chicago Homeowners
Short answers to what Chicago homeowners ask most before they call.
(312) 924-7223Calls are answered 24 hours a day Monday to Friday, plus Saturday 10 a.m. to 4 p.m. and Sunday 10 a.m. to 2 p.m., Central time. Weekend calls are answered during those hours.
Leave the house without touching light switches, the thermostat or appliances, then call Peoples Gas or 911 from outside. Call for the repair once it’s safe.
It depends on where the pipes run; pipes in outside walls, crawlspaces and unheated porches freeze first. Once the house drops into the 50s on a frigid night, take the steps above.
During a Chicago heat wave it can be, especially for older adults, infants and anyone with health conditions. Call early in the day if you can.
Related services
Repairs Behind Most HVAC Emergencies
01Furnace RepairThe most common winter emergency: a furnace that won’t heat.↗02Boiler RepairBoilers that stop firing, lose pressure or leak.↗03AC RepairAir conditioners that quit during a heat wave.↗04Water HeatersLeaking tanks and no hot water.↗05HVAC MaintenanceFall and spring tune-ups that prevent most emergencies.↗06Heat PumpsHeat pumps that stop heating in deep cold.↗
Emergency HVAC across Chicago
Emergency HVAC in Your Neighborhood
Ready when you are
HVAC Emergency in Chicago?
Call (312) 924-7223. Answered 24 hours a day Monday to Friday, Saturday 10–4 and Sunday 10–2.
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