Boiler repair in Chicago.

Radiators cold? Boiler leaking or banging? King repairs, maintains and replaces boilers across Chicagoland and Northwest Indiana, 24/7.

  • Family owned since 1968
  • Certified technicians
  • Up-front pricing
(708) 687-6898
A Carrier boiler with copper piping in a basement
Boiler repair & replacement

Our experts can fix any boiler issue.

When your boiler stops working, call King. We're ready around the clock, including weekends and holidays, and we'll send a certified technician to find the problem and fix it fast.

Our technicians are seasoned pros who know boilers, radiant heat and every other kind of heating system. In most cases they can make the repair on site. See all heating services.

Every job comes with an up-front estimate and our 100% satisfaction guarantee, and you don't pay until the job is done.

  • Boiler & radiator repair
  • Fall boiler maintenance
  • Boiler replacement
  • All makes and models
Call (708) 687-6898
Any service10% offany service or repair

Save when you hire King to repair or maintain your heating, cooling or plumbing systems.

Common issues we see

Boiler problems we fix.

Knowing the warning signs helps you catch a problem before it becomes a bigger one. Our technicians diagnose and repair all of these.

  • No heat or hot waterOften a broken diaphragm, an airlock, a failed motorized valve, a thermostat problem or low water.
  • Leaks and dripsUsually a failed internal part like a pressure valve or pump seal, sometimes from high pressure.
  • Strange noisesWhistling, gurgling or banging, called kettling, from air, a bad pump, low pressure or limescale.
  • Pilot light goes outA broken thermocouple, soot blocking the gas supply, or a draft blowing it out.
  • Low boiler pressureCaused by leaks, a faulty pressure relief valve, or recently bled radiators.
  • Frozen condensate pipeOn modern boilers, this pipe can freeze in extreme cold, block up and shut the boiler down.
  • Thermostat issuesAn inaccurate thermostat causes irregular heat and hot water, or none at all.
  • Radiators not heatingCold or partly warm radiators usually mean sludge or air in the system.
  • Boiler keeps switching offLow pressure, a blocked condensate pipe, air in the system or a faulty thermostat.

Boiler down on a cold night? Call King now.

(708) 687-6898
How it works

Our straightforward process.

From your call to warm radiators, with an honest price before we start.

  1. Call us 24/7

    We respond promptly, even on weekends and holidays.

  2. We send a technician

    Your tech lets you know 10–15 minutes before arriving, in a clearly marked King vehicle.

  3. We inspect your boiler

    After hearing what's happening, your tech inspects the system to find the problem quickly and precisely.

  4. You get an up-front estimate

    A clear price for the repair, plus answers to any questions you have.

  5. We make the repair

    In most cases your technician can fix it right there.

  6. We confirm it's working

    Diagnostic checks make sure your boiler runs efficiently. Our 100% guarantee backs the work.

Or call (708) 687-6898
A residential boiler system with copper piping in a basement
Boiler maintenance

A fall check-up keeps boilers going.

Regular maintenance by a qualified technician is the best way to make a boiler last and avoid surprise breakdowns and costly repairs.

Have our team service your boiler every year. A seasonal check-up in the fall prepares it for winter and improves its efficiency and reliability. Members of the King Royal Treatment Plan get priority service and discounts on repairs.

About our heating tune-ups
A newly installed boiler system with expansion tanks and copper piping
Boiler replacement

When a new boiler makes sense.

If your boiler is aging or needs a major component, a new system may be the more practical choice.

Our certified technicians will give you a full assessment and help you make an informed decision. We install new boilers and radiant heating systems, including Carrier boilers, with a free in-home estimate.

  • Free in-home estimates
  • Carrier Factory Authorized Dealer
  • Financing available with approved credit
$40/moPayments as low as $40/month on a new Carrier system. Financing options
More about heating installation
Watch

Meet King.

A quick look at the family-owned team that has served Chicagoland since 1968.

King Heating, Cooling & Plumbing in Oak Forest, Illinois

Heating reviews

Where the customer is King.

Read more reviews
The top questions our customers ask

Your guide to boiler problems.

Still have a question? Call us 24/7.(708) 687-6898
Why isn't my boiler producing enough heat?
It could be a low water level, a blockage that prevents proper circulation, or a thermostat problem. A burner issue or sediment buildup can also be the cause. Regular maintenance helps prevent all of these.
What causes strange noises from my boiler?
Banging, whistling or gurgling usually comes from air in the system, low water pressure or limescale on the heat exchanger. Bleeding radiators, adjusting pressure or cleaning the system can fix it, but have a professional diagnose it first.
Why is my boiler leaking water?
A broken internal component, high boiler pressure or a corroded tank. Leaks can cause serious damage, so shut off the water supply and call a technician to inspect and repair the boiler.
Should I repair or replace my boiler?
Consider replacing it if it's over 15 years old, needs frequent repairs, struggles to heat your home or has become less efficient. A certified technician can assess its condition and give you an honest recommendation.
Where do you service boilers?
Throughout Chicagoland and Northwest Indiana. See all service areas.
Heating coupons

Save on boiler service.

Mention the coupon when you book. Coupons must be presented at the time of service and can't be combined.

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HVAC repair$50 offany HVAC repair

When you choose King to repair your furnace or air conditioner, you'll enjoy $50 off our service.

New systemFreeestimate on a new AC or furnace

Free estimates for anyone in need of a new AC or furnace system. Know your price before you decide.

Boiler guides

Know your boiler.

Answers to the questions homeowners ask us most.

Heating

Boiler Basics: 5 FAQs for Homeowners

Five of the most frequently asked questions about boilers, answered.

Read the guide Heating

Navigating Boiler Repairs

Common boiler issues and when to call for help.

Read the guide Heating

Preventing Frozen Pipes This Winter

Tips for protecting your home's pipes during a Chicago winter.

Read the guide
See all guides
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