Expert Boiler Repair in Chicago & Chicagoland
Boiler problems require specialized expertise. 999 Heating & Cooling provides fast, reliable boiler repair throughout Chicagoland — diagnosing and fixing all types of boiler issues with honest pricing and same-day availability.
Why Choose 999 Heating & Cooling
- Same-day boiler repair available
- Steam and hot water boilers serviced
- All major boiler brands and models
- Licensed and insured technicians
- Upfront pricing before any work begins
- Emergency boiler service available
Common Boiler Problems We Fix
We diagnose and repair all boiler issues including no heat, strange noises (banging, kettling, or whistling), leaking boilers, pressure problems, pilot light failures, faulty thermostats, circulator pump failures, zone valve issues, and radiator problems. Our technicians carry common parts to complete most repairs in a single visit.
Steam and Hot Water Boilers
We service both steam boilers and hot water (hydronic) boilers. Steam boilers are common in older Chicago homes and require specialized knowledge to diagnose and repair properly. Hot water boilers are more common in newer systems and power radiant floor heating, baseboard heaters, and radiators.
All Major Brands Serviced
Our technicians are trained to work on all major boiler brands including Weil-McLain, Burnham, Peerless, Slant/Fin, Buderus, Viessmann, Navien, and more. Whether your boiler is a classic cast iron unit or a modern condensing boiler, we have the expertise to get it running again.
Boiler Maintenance
Annual boiler maintenance is the best way to prevent unexpected breakdowns and extend the life of your system. Our boiler tune-up includes a full inspection, burner cleaning, flue check, pressure and safety valve testing, and a system efficiency assessment. We recommend scheduling maintenance each fall before heating season.
Frequently Asked Questions
My boiler is making a banging noise — what is wrong?
Banging or kettling noises in a boiler are often caused by limescale buildup on the heat exchanger, trapped air in the system, or low water pressure. Our technician will diagnose the exact cause and provide a repair solution.
My boiler pressure keeps dropping — is that serious?
Yes. A boiler that repeatedly loses pressure may have a water leak, a faulty pressure relief valve, or an issue with the expansion tank. These should be addressed promptly to prevent damage and ensure safe operation.
Can you repair old steam boilers?
Yes. We have experience with the older steam boiler systems common in Chicago's vintage homes and apartment buildings. Steam systems require specialized knowledge, and our technicians are trained to work on them.
How much does boiler repair cost?
Boiler repair costs vary by the type of repair needed. Minor repairs such as a thermocouple replacement or pressure adjustment typically run $150–$350. More complex repairs involving pumps, valves, or controls can range higher. We always provide upfront pricing before starting work.
Other Services We Offer
Ready to Schedule Boiler Repair?
Call us now or book online. We serve Chicagoland and surrounding areas.