Furnace Repair Service in Chicago, IL
Compare Chicago furnace repair services for no-heat calls, short cycling, ignition and flame-sensor faults, blower problems, heat-exchanger concerns, unusual noises, and weak airflow. Use this directory to choose the right service, or start with furnace diagnostics when the cause is unclear.
Furnace Repair & Diagnostics
Furnace diagnostics begin with the thermostat, power, gas supply, ignition sequence, safety controls, airflow, and combustion. Common repairs include igniters, flame sensors, pressure switches, capacitors, and blower components.
No Heat Calls
Ignition failures, gas valve problems, and pilot light outages. Our technicians diagnose the root cause, not just swap parts until something works.
Short Cycling
Furnace turning on and off every few minutes? That's not normal. Could be dirty filters, bad pressure switches, or oversized equipment. Testing, not guessing.
Strange Noises
Banging, squealing, or rumbling from your furnace? Bearings wear out. Blower wheels get dirty. Burners get clogged. Our team fixes it right.
Cracked Heat Exchanger Inspection & Replacement
Call us for a second opinion. Many heat exchangers have long parts warranties. Warranty coverage can make heat-exchanger-only repair more economical than full replacement, although labor remains a major repair and is quoted in writing.
Warranty Replacements
Carrier, Lennox, Trane, and most manufacturers cover heat exchangers for decades. Our technicians check warranty status before recommending replacement.
Honest Diagnostics
Is it really cracked? Or just rust stains? Our team uses cameras and combustion analyzers to prove it before condemning your unit.
Furnace Blower Motor Repair & Replacement
Blower motor making grinding noises? Not moving air? Running constantly? Bearings wear out. Capacitors fail. ECM motors burn out after years of 24/7 use. Our team carries universal motors and capacitors on every truck. Most blower motor repairs finish same-day.
Common Blower Issues
- Squealing or grinding noises from bearings
- Weak airflow from dirty blower wheel
- Motor won't start - bad capacitor
- ECM motor failure (variable speed units)
Chicago-Specific Problems
Dust from construction and old homes coats blower wheels like concrete. That 1/16th inch of buildup drops efficiency by 20%. In Portage Park, Logan Square, and Albany Park, our technicians see this every day in those 1920s bungalows.
Furnace Ignition & Flame Sensor Repair
Furnace not igniting? Pilot light won't stay lit? Flame sensor shutting it down? These are the most common repair calls during Chicago winters. The igniter glows orange but furnace won't light. Or pilot lights for 10 seconds and goes out. Our technicians fix these every day.
Hot Surface Igniters
Cracks after thousands of heating cycles. Glows bright but won't ignite gas.
Flame Sensors
Gets coated in soot. Can't detect flame. Shuts gas valve off. Usually just needs cleaning.
Standing Pilot Lights
Old furnaces with pilot lights. Thermocouple failures. Drafts blow pilot out. We fix these too.
Furnace Tune-Up & Safety Inspection
Combustion analysis. Gas pressure check. Heat exchanger camera inspection. Flame sensor cleaning. Carbon monoxide testing. Real tools, not a clipboard and a quote for a new system.
Our 21-Point Inspection Includes
Boiler questions?
Water pooling under your boiler? Radiators hissing and spitting? Pressure dropping every week? Chicago's old homes are full of steam and hot water boilers that leak. Finding the leak is half the battle. Most "furnace guys" don't touch boilers. Our team specializes in them.
Common Leak Sources
- • Relief valve weeping from high pressure
- • Circulator pump seals failing
- • Zone valve actuator connections
- • Boiler drain valve leaking
- • Near-boiler piping threaded connections
- • Heat exchanger pin-holes (replacement needed)
Chicago Boiler Neighborhoods
Steam heat is concentrated in older Chicago neighborhoods. If you live in a brick bungalow or greystone built between 1910-1940, you probably have a boiler.
Common areas: Avondale, Logan Square, Belmont Cragin, Portage Park, Jefferson Park, Albany Park, Irving Park, North Center.
Why Chicago Needs Reliable Heating
With January lows averaging 22°F and wind chills hitting -52°F during polar vortex events, a broken furnace isn't just uncomfortable. It's dangerous. Pipes freeze. Families leave for hotels. That's why our trucks run 24/7.
7 Months
Heating Season
2,500 Hours
Avg. Runtime/Year
22°F
January Average Low
-52°F
2019 Wind Chill Record
Need Furnace Repair in Chicago?
Call Bernie's for honest diagnostics, flat-rate pricing, and same-day repairs. No sales pitch. Just heat.