AC blowing warm air — Chicago, Illinois
When your air conditioner runs but only blows warm or room-temperature air, the most common culprits are a dirty air filter restricting airflow, low refrigerant from a leak, a frozen evaporator coil, a failed compressor, or an incorrect thermostat setting. A clogged filter is the easiest DIY fix — replace it and wait 3–4 hours for a frozen coil to thaw. If the problem persists, the system likely has a refrigerant leak or a component failure that requires a certified HVAC technician. Refrigerant leaks require EPA-certified handling, and recharging without fixing the leak is both illegal and wasteful. Diagnosis costs $75–$200; common repairs range from $150 (capacitor) to $1,500+ (compressor replacement).
Waarom dit veel voorkomt in Chicago
Lake effect weather creates extreme temperature swings — from -20°F winters to 95°F+ summers — meaning both heating and cooling systems work year-round. Furnace failures during polar vortex events are emergency situations, and many Chicago homes rely on aging boiler systems.
Who to call
For this problem in Chicago, call a: Klimaattechnicus
Vind een Klimaattechnicus in ChicagoSymptoms to look for
- Air from vents feels warm or the same temperature as the room
- AC unit runs continuously but the house never reaches the set temperature
- Ice buildup visible on the outdoor unit or refrigerant lines
- Higher than normal electricity bills without increased usage
Spoeddienst in Chicago
Emergency home services in Chicago are widely available 24/7, with typical response times of 30–60 minutes. After-hours rates range from $100–$200/hour. During polar vortex events, heating emergencies can see delays of 4–8 hours due to overwhelming demand. Illinois requires plumbing and electrical licenses for all work.