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Top-Rated Air conditioning pros in Darien - Updated Nov 2026

Avatar for Home Comfort Systems Inc
Home Comfort Systems Inc
4.9(
315
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Darien, IL and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"We purchased a new central air conditioner and a 2-stage furnace. In addition, they needed to update the air circulation to and from the system, which was nicely done. Needed a little tweaking, and one of the owners came out to perform the simple task himself."
Additional Photos
Response time8 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for VENT HEATING & COOLING INC.
VENT HEATING & COOLING INC.
4.8(
46
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Darien, IL and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"Jim and his son Emmanuel performed the most detailed pre estimate evaluation of our Air Conditioning Replacement needs. Their installers were very professional and efficient. Vent has done work at my wife's office and for our home. We received competitive pricing and quality workmanship. We recommend them highly. Dan and Terry Nimtz Lemont, Il"
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Response time9 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+3 more

Serving Darien, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"We had a great experience with Four Seasons Heating & Air Conditioning during our recent replacement of our furnace and AC unit. They were very professional and completed the job on time and answered all of my questions. Would recommend them for our Heating, Air Conditioning, Plumbing and Electrical needs."
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Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for AWE Air Water Energy
AWE Air Water Energy
4.7(
588
)
Ductless Mini-split A/C - Install or Replace

Serving Darien, IL and surrounding areas

Approved (Corporate)

In business since 1911

Free estimates

Emergency services offered

"They were able to send out a tech to repair our AC pretty quickly (within a few days), even though this was during a bout of unusually high temperatures. The tech arrived towards the end of the given arrival window; even though he was still within the window, they called me that day to let me know he would be later rather than earlier, which was nice. The tech diagnosed the issue, and discussed options with me and fixed it (low line refrigerant, possible leak). All that was great, and prices seemed reasonable. The only negative part of the experience is that there was an extra charge to de-ice the frozen interior coils. I could have done that in advance if I knew I was supposed to (the tech seemed surprised I hadn't, or that I wasn't told to). Maybe that's obvious to others, but it's not that big of a deal, just an an annoying extra cost."
Owner Ray Grimm
We're the ones with the yellow trucks, and cars, too!
Expert service keeps your home healthy
Solar Power
Regular Maintenance

+10

10 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for TR Miller Heating, Cooling, Plumbing and Electrical
TR Miller Heating, Cooling, Plumbing and Electrical
4.5(
112
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Darien, IL and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"They came even at a busy time to assess what needed to be done. I was given plenty of information and my questions were answered. I expect tomorrow’s furnace instsall will go just as well. I have had ac units and furnaces installed by Miller and been very pleased. A fine company."
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+1

6 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for United Heating and Air Conditioning, Inc.
United Heating and Air Conditioning, Inc.
4.4(
224
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Darien, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"We called United Heating and Air Conditioning for an annual furnace inspection for our new home. They scheduled quickly and easily. We then had a conflict and they re-scheduled just as easily. When they inspected the furnace it turned out it was extremely old and no longer safely operable. We required an emergency replacement. This was in November and we didn't want to be without a furnace. United Heating and Air Conditioning was able to come the next day (!) and install a new furnace. They took care of the installation, confirmed it worked, and hauled away our old furnace. They were quick and professional and stuck exactly to the quote. We were extremely satisfied and will definitely be reaching out to them when it's time to check (and possibly replace!) our air conditioning unit. Highly recommend!"
INSTALLATIONS
INSTALLATIONS
INSTALLATIONS
INSTALLATIONS
INSTALLATIONS

+25

Response time7 hrs
Response rate96%
2 neighbors recently requested a quote
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Air Conditioning FAQs, answered by experts

Yes, a mini split AC system can replace central air—and quite easily, too. Since mini splits don’t require ductwork, homeowners can convert their central air system to a mini split to save money and energy. Consult with an HVAC professional to learn more about the process of replacing your central air with a mini split.

Yes. Your air supply should be balanced. The return and supply ducts need to maintain that balance, and this only occurs because an equal amount of air should be entering and leaving your HVAC system. Changes in pressure, extreme weather, and blocking vents with furniture or your stuff can make the air supply unbalanced and cause your home to get too cold or hot.

The average life span of an HVAC system is 15 to 20 years. Even if your old air conditioner is still functional, it isn't as energy-efficient as a newer system (especially one with an Energy Star designation). Older HVAC systems aren't as efficient, and the 10-year mark is when you should start making full system replacement plans. Twenty years in, that plan should be well underway rather than waiting for the unit to die.

Fixing a leak in an AC unit costs $200 to $1,600, depending on the type of leak and any related damage. But depending on the age and condition of your AC, it might make more sense to replace the AC unit instead of repairing it. If your AC is only a few years old and relatively problem-free, then repairing it is the right call. But if it’s nearing a decade old and has other issues, consider replacing it.

No, you don’t need a ductless unit in every room. Ductless AC units don't work the way that window units do, where the air doesn't travel outside that room. The indoor air handlers all attach to the outdoor condenser. While the air doesn't travel the way that traditional ductwork would, the ductless AC units create zones so that one part of the home can be cooler than another. They can spread effectively enough that indoor units only need to be placed in main living areas.

The Darien, IL homeowners’ guide to air conditioning services

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