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Verified Reviews for Heating And Air Conditioning Service pros in Illiopolis, IL

*The Angi rating for Heating And Air Conditioning Service companies in Illiopolis, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Illiopolis, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on July 08, 2026

Find Heating and air conditioning pros in Illiopolis

Avatar for MB Heating & Cooling
MB Heating & Cooling
4.6(
26
)
Electric Furnace / Forced Air Heating System - RepairCentral A/C - Service or RepairGeothermal Heating or Cooling System - Service+1 more

Serving Illiopolis, IL and surrounding areas

Approved

In business since 1986

Emergency services offered

Credit card accepted

"Very fine work done fast!"
Response time4 hrs
Response rate90%
18 neighbors recently requested a quote
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Tiger Plumbing, Heating, Air Conditioning, & Electrical Services
3.4(
353
)
Central A/C - InstallCentral A/C - Service or RepairAir Ducts & Vents - Clean+12 more

Serving Illiopolis, IL and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"My technician Keith was great. Friendly and super informative. Also too a quick look at the entire drainage system and gave my an idea of where problems will pop up the future without preventative measures (my home was built in the 50s and while the previous owners took really good care of the house nothing has been gutted and replaced yet)."
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+5

182 neighbors recently requested a quote
Recommended by74%of homeowners
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Affordable Home Repair
5.0(
4
)
Thermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Illiopolis, IL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"John and his helper Nathan did an excellent job!! They arrived when they said they were going to an hung a 65 inch tv and a 50 inch tv with no problem at all! The job was done in a timely manor. Both were very professional and friendly! The price was reasonable too!! I would highly recommend and trust the work of Affordable Home Repair for any job! Just an fyi…I told him I would take care of cord hanging down."
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Response time2 days
Response rate100%
2 neighbors recently requested a quote
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Advanced Air Heating & Cooling
5.0(
28
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Illiopolis, IL and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"He came out within about 2 hrs of me calling, which was great. He cleaned everything, replace freon, and advised me on how to handle future problems. The best thing was he did not try to sell me a new unit. All of my HVAC equipment in my house is older, and anytime I have had anyone else over for any reason they always try and sell me on new furnace/AC etc. He did not. He was quick and professional and it was appreciated. I will definitely use and recommend him in the future.
"
Recommended by100%of homeowners
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Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Illiopolis, IL and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"I had an issue with my computer where it was opening lots of pop ups, ad bars, and windows with ads for games. I had tried several different programs to try to remove it with no luck. I finally decided to call North Alabama Technical Service to see if I he could help. I was expecting to set up a time for him to look at it but he connected to my computer immediately and within an hour had it fixed and running perfect again. Great service at a great price and I didn't even have to disconnect it and carry it somewhere! Would call again if I have another issue I can't resolve myself."
2014 Super Service Award Winner!
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Recommended by97%of homeowners
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Avatar for Cripe Heating and Air - Home Facebook
Cripe Heating and Air - Home Facebook
4.8(
6
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceElectric Furnace / Forced Air Heating System - Repair+8 more

Serving Illiopolis, IL and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Would gladly hire again if I needed something done"
Response time7 hrs
Response rate92%
Recommended by100%of homeowners
Request Quote
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Heating and Air Conditioning questions, answered by experts

Deciding whether to replace just the AC coil or the entire system depends on the age of your unit and the overall cost. Replacing a coil is less expensive than a full system replacement, but it can still be a pricey repair. If your HVAC system is relatively new and still under warranty, or if the replacement cost is significantly lower than a new system, replacing the coil can be a worthwhile investment that restores efficiency and extends the unit's life. However, for older systems (nearing the end of their 10-15 year lifespan) or those with extensive damage, it is often more cost-effective to replace the entire AC unit. Mismatched coils in an older system can lead to inefficiency and future breakdowns, so a full replacement ensures optimal performance and avoids further costly repairs.

NATE (North American Technician Excellence) certification is not legally required for HVAC technicians in most areas, but hiring a professional with this certification is highly recommended. NATE-certified technicians demonstrated their expertise and proficiency in different types of HVAC systems, offering assurance of quality service. It's a voluntary certification, yet it indicates a commitment to professionalism and ongoing training. Choosing a NATE-certified technician often means you're working with someone who is up-to-date on industry standards and best practices, which can lead to better service, energy efficiency, and long-term cost savings.

Yes, scorpions can enter a home through AC vents, especially if the system is not well-sealed. As excellent climbers, they can scale a home's exterior and squeeze through gaps as small as 1/16 of an inch. Scorpions are often attracted to the moisture around air conditioning ducts or seek cooler areas during hot weather, using vents as a pathway inside. They may slip through small openings where the duct meets the vent cover and travel within walls before emerging. To prevent this, inspect your vents, seal any gaps, and consider installing fine mesh screens.

Most HVAC companies charge a flat service call fee of between $75 and $150, which includes traveling to your home and inspecting your system to find the underlying problem. Keep in mind that these prices only include diagnostics and the actual repairs will usually be billed separately. If you’re calling for routine service, the service call will be included in your inspection and tune-up, with the total sitting around $150. Your prices could be a little higher if you have a very large home with multiple condensers and air handlers, as inspections and servicing take longer.

Common signs of insufficient return air include uneven temperatures, with some parts of your home feeling hotter or colder than others, and noticeable differences in air pressure between rooms. You might also observe that more air is blowing in rooms closer to the AC unit. Leaky air ducts can also be a related issue or clue.

The Illiopolis, IL homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

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