Boiler Repair in Chicago, IL
Leaking, losing pressure, banging or not heating? Our EPA and NATE-certified technicians repair gas, electric, steam and combi boilers of all brands, finding the root cause and fixing it correctly the first time. Locally owned and family-operated since 2005.
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Boiler Problems We Repair in Chicago Homes
Boiler systems are complex, so we never guess or replace parts unnecessarily. Our technicians perform detailed diagnostics to find whether the issue is in internal components, controls, pressure regulation or heat distribution, and every repair is tested before we leave.
Leaks and pressure loss
Water around the boiler, a pressure gauge that keeps dropping or a system that needs constant refilling. We trace leaks in fittings, valves, radiators and the boiler itself, and fix the cause of pressure loss.
No heat or cold radiators
Radiators that stay cold, heat only part of the way or warm some rooms but not others usually point to trapped air, a failed pump, a stuck zone valve or a control problem.
Banging, gurgling or whistling
Kettling from mineral buildup, gurgling from trapped air and banging from water hammer in steam systems. We find the source before it damages the boiler or piping.
Pilot and ignition failures
A pilot that will not stay lit, a failed igniter or a flame sensor problem leaves the boiler unable to fire. We repair and test the full ignition sequence.
Circulation pump and zone valves
When the circulator fails or a zone valve sticks, hot water stops moving to your radiators. We repair or replace pumps, valves and actuators.
Expansion tanks and relief valves
A waterlogged expansion tank or a dripping pressure relief valve causes pressure swings and leaks. We repair and replace both to keep pressure stable.
Thermostat and control faults
Thermostats, aquastats and control boards tell the boiler when and how hot to run. We troubleshoot wiring and controls and replace failed parts.
Heat exchanger problems
Corrosion, scale and cracks in the heat exchanger cut efficiency and can cause leaks. We inspect it closely and tell you honestly if repair still makes sense.
Hot Water, Steam and Combi Boiler Repair
Chicago homes run on everything from brand-new condensing boilers to cast iron units installed generations ago. We are experienced with modern high-efficiency boilers and the legacy systems still common in Chicago bungalows, greystones and two-flats.
Hot water boiler repair
Most Chicago boiler homes heat with hot water piped to radiators or baseboard. We repair circulators, zone valves, expansion tanks, relief valves, aquastats and burners, then purge air and balance the system so every room heats evenly.
Steam boiler repair
Steam systems in older buildings have their own failure points: low water cutoffs, pressure controls, sight glasses, main vents and radiator air vents. We troubleshoot uneven heat, water hammer and short cycling on steam boilers.
Combi boiler repair
Combination boilers provide both home heat and on-demand hot water from one compact unit. We repair heating and domestic hot water faults, pressure problems and error codes on combi systems.
Electric boiler repair
Electric boilers fail at heating elements, contactors, relays and controls. We test each circuit and replace only what has actually failed.
Quick Checks Before You Call for Boiler Repair
Some boiler problems have simple causes. Try these safe checks first. If the boiler still is not heating, or anything looks wrong, stop and call a technician rather than resetting it repeatedly.
- 1Check the pressure gauge
Most residential hot water systems run around 12 to 15 psi when cold. Much lower or higher points to a leak, fill valve or expansion tank problem.
- 2Check the thermostat
Make sure it is set to heat, above room temperature and has fresh batteries.
- 3Check power to the boiler
Look for a tripped breaker and make sure the boiler service switch is on.
- 4Bleed cold radiators
If radiators are cold at the top, trapped air may be the cause. Bleed them carefully with a radiator key.
- 5Steam boilers: check the sight glass
The water level should be visible in the glass. Do not add water to a hot, empty steam boiler. Call us instead.
- 6Note any error code
Write down any code or flashing light on the boiler controls. It helps us arrive prepared.
Our Boiler Repair Process
Every boiler repair follows the same careful diagnostic sequence, so we fix the real problem rather than the symptom. Our fully stocked service vehicles mean many repairs are finished on the first visit.
- 01Controls and thermostat
We confirm the thermostat, aquastat and controls are calling for heat correctly.
- 02Pressure and water level
We check system pressure, the expansion tank and, on steam boilers, the water level and low water cutoff.
- 03Ignition and burners
We watch the boiler fire and test the igniter, pilot, flame sensor and gas valve.
- 04Circulation and zones
We test circulator pumps and zone valves to make sure hot water reaches every radiator.
- 05Leaks and heat exchanger
We inspect fittings, valves and the heat exchanger for leaks, corrosion or cracks.
- 06Repair and full test
We make the repair, purge air, verify pressure and confirm even heat before we leave.
Should You Repair or Replace Your Boiler?
We will never push a new boiler when a repair will do. Here is how we help Chicago homeowners decide, with both options priced up front.
Repair usually makes sense when
The problem is a single part such as a pump, zone valve, expansion tank, relief valve, igniter or control, and the boiler is otherwise sound. Many boilers run reliably for years after the right repair.
Follow up with yearly boiler maintenance to keep it that way.
Replacement is often smarter when
The heat exchanger is leaking or cracked, the boiler is old and inefficient, or repairs keep stacking up every winter. A properly sized new boiler will usually cost less to run and own.
See our boiler installation service or compare all boiler services.
Why Chicago Homeowners Choose TCC for Boiler Repair
As a locally owned, family-operated business, we have restored reliable boiler heat for Chicago homeowners since 2005 with honest service and certified expertise. Learn about TCC.
“He is reliable, honest, and always efficient in diagnosing the issue with our appliance and fixing it quickly.”
EPA & NATE Certified
Certified technicians who repair all boiler types and brands.
Stocked Service Trucks
Common boiler parts on board, so many repairs finish on the first visit.
Emergency Breakdowns
Fast response when your boiler fails in freezing weather.
No Unnecessary Parts
We never guess or replace parts you do not need.
Modern and Legacy Systems
High-efficiency boilers and the older units common in Chicago homes.
Family-Operated Since 2005
Owner-led service with honest repair-or-replace advice.
Boiler Repair Reviews From Chicago Customers
Rated 4.9 out of 5 across 260+ Google reviews. Read more reviews
HVAC Service Areas Across Chicagoland
From downtown high-rises to South Side bungalows and the north and southwest suburbs, our technicians cover the Chicago neighborhoods and communities below. Not sure if you are in range? Call (773) 715-3860.
- South Loop
- Chinatown
- Near South Side
- Downtown Chicago
- West Loop
- River North
- Gold Coast
- Old Town
- Lincoln Park
- Lake View
- Uptown
- Wicker Park
- Humboldt Park
- Pilsen
- Bronzeville
- Hyde Park
- South Shore
- Beverly
- Morgan Park
- Oak Lawn
- Orland Park
- Tinley Park
- Northbrook
Chicago Boiler Repair FAQs
Answers to the boiler repair questions we hear most from Chicago homeowners.
Who repairs residential boilers in Chicago?
Tabor’s Complete Comfort Mechanical (TCC Mechanical) repairs residential gas, electric, steam and combi boilers across Chicago. The locally owned, family-operated company has EPA and NATE-certified technicians and has restored boiler heat for Chicago homes since 2005. Call (773) 715-3860.
Why is my boiler losing pressure?
Common causes are a leak in the piping, radiators or boiler, a dripping pressure relief valve, a waterlogged expansion tank or a faulty fill valve. A technician can locate the source and fix it rather than repeatedly refilling the system.
What pressure should my boiler be at?
Most residential hot water boilers run around 12 to 15 psi when cold and somewhat higher when hot. Steam boilers run at much lower pressure. If your gauge is well outside the normal range, call for service.
Why are my radiators not heating?
Trapped air, a failed circulator pump, a stuck zone valve, low system pressure or a control problem can all stop radiators from heating. On steam systems, clogged air vents are a common cause.
Why is my boiler making banging or kettling noises?
Kettling is often caused by mineral scale on the heat exchanger. Banging can come from trapped air, pump problems or water hammer in steam systems. These noises are worth investigating before they cause damage.
Do you repair steam and combi boilers?
Yes. We repair hot water, steam, combi and electric boilers, including both modern high-efficiency units and older legacy systems common in Chicago homes.
Can a leaking boiler be repaired?
Often, yes, when the leak is at a fitting, valve, pump seal or radiator. If the heat exchanger itself is cracked or corroded, replacement is usually the safer and more cost-effective option.
Do you offer emergency boiler repair?
Yes. We respond to emergency boiler breakdowns across Chicago, especially during extreme cold, and our 24/7 line covers nights and weekends.
How much does boiler repair cost in Chicago?
It depends on the part and labor involved. We diagnose the boiler first and give you an upfront price before any repair work begins.
Do you repair boilers in my neighborhood?
Yes. We repair boilers across Chicago, including Lakeview, Lincoln Park, Hyde Park, Bronzeville, Wicker Park, Pilsen, the South Loop, South Shore, Beverly and Morgan Park, plus Oak Lawn, Orland Park and Tinley Park.
Schedule Boiler Repair in Chicago Today
Whether your boiler is leaking, noisy or not heating at all, we are ready to help. Send a request or call to talk with a real technician.
- Call or text(773) 715-3860
- Office1449 S Michigan Ave, Chicago, IL 60605
- All boiler servicesBoiler services in Chicago
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