Boiler Repair in Chicago & the North Shore

Boiler & Hydronic Heating Repair in Chicago

A huge share of Chicago's housing — vintage two-flats, greystones, courtyard buildings, and the estate homes of the North Shore — is heated by hot-water or steam boilers, not forced air. These systems are famously durable, but they fail in their own particular ways: a seized circulator pump, a stuck zone valve, a waterlogged expansion tank, an aquastat that stops calling for heat. SAVA brings the boiler-specific experience these systems require.

Because most Chicago boilers are decades old, the good news is that most failures are repairable rather than replacement-level. We diagnose the actual fault, explain it in plain language, and give you the full price before any work begins — with honest guidance on repair versus modernization when a system genuinely is at the end of its life.

Boiler Repairs We Handle

• No heat / boiler won't fire: ignition, pilot, gas valve, and aquastat control diagnosis.
• Circulator pump failure: pump replacement and bearing/seal faults that stop hot water from reaching radiators or zones.
• Zone valve problems: stuck or failed valves that leave one part of the home cold while the rest heats.
• Expansion tank & pressure issues: waterlogged tanks, relief-valve discharge, low- and high-pressure faults.
• Radiators not heating: trapped air, balancing, and supply-side diagnosis for cold radiators or baseboards.
• Steam systems: low-water cutoffs, pressure controls, and the steam-specific faults of Chicago's oldest buildings.

What Boiler Repair Costs

Every repair starts with a $79 diagnostic visit — we identify exactly what failed and explain all findings before any work begins. The diagnostic fee is credited toward the repair if you proceed. A circulator or zone valve is a minor repair; heat-exchanger and control work is larger. Either way, you have the exact number in hand before you decide.

Boiler Service Across Chicago & the North Shore

Dedicated boiler pages for the towns where we service hydronic heat most often:

Boiler Repair Winnetka · Boiler Repair Wilmette · Boiler Repair Glencoe · Boiler Repair Northfield · Boiler Repair Lake Zurich · Boiler Repair Libertyville

Also see: Furnace Repair Chicago · Heat Pump Repair · Emergency Furnace Repair · Water Heater Repair

Why Chicago Homeowners Trust SAVA with Their Boilers

• Owner-operated: the technician who answers the phone is the one who does the repair
• Hydronic and steam experience — zones, circulators, controls, not just forced air
• $79 diagnostic, credited toward the repair if you proceed
• The full price before any work begins — no surprise bills
• EPA Section 608 Certified, fully insured, family-owned since 2017
• 4.9★ · 150+ reviews on Google, Yelp & Thumbtack

Frequently Asked Questions — Boiler Repair Chicago

Do you repair hot-water boilers in Chicago?

Yes. Hot-water (hydronic) boiler repair is a SAVA specialty across Chicago and the North Shore. We service circulator pumps, zone valves, expansion tanks, pressure-relief valves, aquastat controls, and ignition systems.

My boiler isn't producing heat — what's usually wrong?

The most common no-heat causes are a failed circulator pump, a stuck zone valve, an ignition or pilot fault, a waterlogged expansion tank, or an aquastat control problem. We diagnose the specific fault and give you the full price before any work begins.

Do you repair steam boilers?

Yes. We service the steam systems found in Chicago's older two-flats, greystones, and vintage North Shore homes — low-water cutoffs, pressure controls, and steam-specific faults.

What does boiler repair cost in Chicago?

Every repair starts with a $79 diagnostic visit that covers complete diagnosis and is credited toward the repair if you proceed. A circulator pump or zone valve is a minor repair; heat-exchanger or control issues are larger. You get the exact number before any work begins.

My radiators are cold in one part of the house — why?

In a zoned hot-water system, one cold area usually points to a stuck zone valve, a failed circulator serving that zone, or air trapped in the lines. We diagnose the specific zone rather than guessing at the whole system.

Should I repair or replace my old boiler?

Cast-iron boilers are famously long-lived, and most failures — pumps, valves, controls — are repairable at a fraction of replacement cost. We tell you honestly which side of that line your boiler is on, with the numbers to back it up.