Cold radiators, a boiler that short-cycles, a pilot that won't stay lit, water where water shouldn't be — none of that gets better by waiting. Ultimate HVAC Inc. handles boiler repair and maintenance across Skokie and the surrounding Cook County area, and when you call, you get Chano Garcia and his family. No call center. No "press 1 for service." No subcontractor showing up in an unmarked van. We're open 24/7, we book same-day service, and we tell you what's actually wrong with the thing.
What boiler repair and maintenance involves
A boiler is a closed loop that heats water and moves it through your home. When it fails, the cause is almost always in one of a handful of places: the burner and ignition assembly, the circulator pump, the expansion tank, the low-water cutoff, the aquastat, the pressure relief valve, or air trapped in the loop where water should be.
A real repair visit starts with combustion and pressure, not with a parts catalog. We check system pressure cold and hot, inspect the heat exchanger and burner for scale, soot and cracking, test the ignition sequence and flame sensing, verify the aquastat is calling and cutting at the right temperatures, and check the flue and venting for blockage or backdraft. Then we look at circulation — pump operation, zone valves, and whether your radiators or baseboards are actually getting hot end to end.
Maintenance is the boring version of the same work, done before you need it: cleaning the burner and combustion chamber, flushing sediment, bleeding air from the loop, checking the expansion tank charge, testing safety controls, and confirming the low-water cutoff still cuts out. Most emergency boiler calls we get in Skokie are things a maintenance visit would have caught.
Why Ultimate HVAC Inc. for boiler repair in Skokie
- Family-owned and family-run. Chano Garcia and his family do the work. No subcontractors, no rotating crews, no phone tree between you and the person who fixes your boiler.
- Open 24/7, Monday through Sunday. Boilers fail on Sunday night in February. We answer then too, and we offer same-day service.
- Free second opinions. If somebody told you the boiler is done and you need a new one, we'll come look before you spend that money.
- We fix the fundamentals first. Pressure, combustion, airflow, circulation, and how the system was piped. Those explain most failures — and they're what a lot of companies skip on the way to a sales pitch.
- Transparent, up front. You get the finding, the fix, and the price before we start. Cross-check any of it against our site.
- Online scheduling and a firm appointment time. Book it, and we show up in that window.
- $140 seasonal service special and financing available if a repair turns into a bigger job.
Our boiler repair and maintenance process
- You call or book online. Real person, real time slot. Tell us what the boiler is doing — no heat, no hot radiators, noise, leaking, cycling on and off — and we'll bring what we're likely to need.
- Diagnostic on site. We test system pressure, ignition and flame, the aquastat and safety controls, the circulator, zone valves, and the venting. We find the cause, not the symptom.
- Straight explanation and a price. We show you what we found and what it costs to fix before any wrench turns. If the honest answer is "this boiler is at the end," we'll say that too — and we'll show you why.
- The repair. Parts replaced, system refilled and re-pressurized, air bled out of every zone, combustion re-checked.
- Full-system verification. We run the boiler through a complete cycle and walk the radiators or baseboards to confirm heat is actually reaching the far end of the loop.
- Maintenance plan, if you want one. A cleaning and safety check before next heating season so we're not meeting again at midnight. Ask about our boiler replacement options if repair stops making sense.
What boiler repair and maintenance typically costs
We don't post a single number, because a bled air pocket and a cracked heat exchanger aren't the same job. Estimates range based on what failed, what parts your boiler takes, and how the system was originally piped.
Cheaper end: bleeding zones, re-pressurizing the system, replacing a thermocouple or a pressure relief valve, cleaning a dirty burner. Higher end: circulator pump replacement, zone valve or aquastat replacement, low-water cutoff work, or anything involving the heat exchanger. Older boilers and discontinued parts push cost up. Easy access to the mechanical room pushes it down.
Our seasonal maintenance service runs $140. That covers the cleaning and safety check — it doesn't include parts if we find something failing, and we'll tell you before we replace anything. Repair quotes include labor, parts, and full system testing after. Financing is available if a repair turns into a replacement, and second opinions are free. Call for a free quote and we'll give you a firm number, not a range that moves at the end.
Service areas we cover
- Skokie
- Evanston
- Niles
- Morton Grove
- Lincolnwood
- Wilmette
- Glenview
- Des Plaines
- Park Ridge
- Cook County
Frequently asked questions
My radiators are cold but the boiler is running. What's wrong?
Usually air trapped in the loop, low system pressure, a failed circulator pump, or a stuck zone valve. All four are common and all four are diagnosable in one visit.
Can you come out today?
Yes — we offer same-day service and we're open 24/7, Monday through Sunday, including emergencies.
Should I repair my boiler or replace it?
Depends on the failure, the age, and whether parts are still made for it. A cracked heat exchanger usually means replacement. A pump or control almost never does. We'll show you which one you're looking at, and a second opinion is free if another company already told you otherwise.
How often should a boiler be serviced?
Once a year, before heating season. Most of the emergency calls we run in Skokie trace back to something a yearly cleaning and safety check would have caught.
Do you work on commercial boilers?
Yes. We serve small commercial customers around Skokie and Cook County along with residential.
Will I get an actual appointment time?
Yes. Book online or by phone and you get a firm window — not "sometime Thursday."
If your boiler is down, or it's limping and you'd rather deal with it now than in January, call +17734942052 or book online. You'll talk to the family that does the work, get a free quote, and get a firm appointment time. Ask about the $140 seasonal service and our free second opinions while you're at it.