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4.7 
Based on 4,700+ Reviews
24/7 service in Mount Greenwood.
10% Off Any Service or Repair Exp: 8/31/2026
Furnace & AC Repair in Mount Greenwood (60655)
Dependable HVAC for the far Southwest Side
From the bungalows off 111th Street to the ranch homes near Mount Greenwood Park, King keeps this tight-knit community comfortable with 24/7 heating and cooling service — certified techs, upfront pricing, and our 100% satisfaction guarantee.
Why Mount Greenwood calls King first
In a neighborhood full of first responders and city workers, reliability matters. Here’s what King delivers on every visit.
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Available 24/7 for emergency heating and cooling service.
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We provide upfront pricing
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Friendly, certified, NATE-trained technicians
Proudly Serving Customers Since 1968!
Heating & cooling services in Mount Greenwood
Mount Greenwood’s dependable HVAC team
Service the way first responders expect it
Mount Greenwood anchors the far southwest corner of Chicago, bounded by 111th Street, 127th Street, Pulaski Road, and Cicero Avenue. It’s one of the city’s most tight-knit communities — home to many of Chicago’s police officers and firefighters — with tree-lined streets of brick bungalows, ranches, and Cape Cods, most built between the 1940s and 1970s, and a lively commercial stretch along 111th Street.
The bungalows and ranch homes that define Mount Greenwood were built to last, but their furnaces and air conditioners weren’t. As original and second-generation systems age, King helps homeowners get more good years out of them with seasonal tune-ups and prompt repairs — and, when the time comes, upgrades to efficient new equipment. We service all makes and models and install furnaces, air conditioners, heat pumps, and ductless mini-splits.
First responders and city workers know the value of a team that shows up when it says it will. Since 1968, King has been that team for the South Side. With our Oak Forest and Oak Lawn locations minutes away, Mount Greenwood homeowners get fast 24/7 service and upfront pricing. We also serve neighboring Beverly and Ashburn.
“John was very knowledgeable, professional, and had me up and running in about an hour and a half. I wouldn’t use anyone else.”
“The only company I have ever dealt with that made every appointment on time. I highly recommend King and I don’t believe you would be disappointed.”
We repair all makes and models.
Royal Treatment for Mount Greenwood homes
Effortless, scheduled seasonal care
Royal Treatment Plan members get regularly scheduled seasonal tune-ups, plus perks like priority service and a discount on parts and labor.
Instead of you having to remember, we call to schedule your annual heating and cooling tune-ups — they’re included with membership. It’s the easy way to prevent breakdowns and keep your system efficient. Learn more about the Royal Treatment Plan or call to get started.
How we handle a Mount Greenwood call
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Call us any hour, any day
Reach our team 24/7 for heating or cooling trouble, and we’ll tell you the soonest we can be there.
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We diagnose the issue on-site
Our tech inspects your AC, furnace, or boiler, finds the real problem, and gives you an upfront quote before any work.
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We repair it with your approval
Once you say go, we complete the repair — usually the same visit — and confirm your system is running right.