*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
Serving Illiopolis, IL and surrounding areas
Approved
In business since 1986
Emergency services offered
Credit card accepted
"Curtis installed complete home acand furnace unit ,with all new duct work and did a great job."
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)."
+5
Serving Illiopolis, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2004
Warranties offered
Customers say: True professional
"A1 IS A1 in my book. Joe is a problem solver with a great work ethic and a terrific personality!!"
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."
Serving Illiopolis, IL and surrounding areas
Approved
Quality work done by licensed hvac professional. Also available for small home improvement projects. Eager to get your projects done in a professional manner. \n
Serving Illiopolis, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
I Frankie Evans am good at what I do when comes to cleaning I love helping others and being able to do what I love to do
Serving Illiopolis, IL and surrounding areas
Approved
My name is Rich Schaub I am a master electrician with 20 plus years of experience. I have experience in all aspects of electrical work.
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.
"
Serving Illiopolis, IL and surrounding areas
In business since 2018
Free estimates
Warranties offered
"On April 30, 2025 we utilized the services of Duct Dusters, Springfield, IL to clean our ducts prior to an installation of a new HVAC system. We selected Duct Dusters because they are BBB Accredited, had a 5-Star rating, great reviews, & the owner, Jeff explained their cleaning processes in great detail. Our technicians, Max & Cody arrived on time; were friendly & professional; wore booties over their shoes; showed us before-during-after pictures of each duct; and left the premises tidy & free of debris. They deserve our 5-star rating."
+5
Serving Illiopolis, IL and surrounding areas
In business since 1893
Free estimates
Warranties offered
"The team from A-1 Interstate Mechanical were great they did a good job were on time and showed respect for my home and me."
From average costs to expert advice, get all the answers you need to get your job done.
A central air system is great for someone looking to cool and heat their home all year round. Even if your home uses baseboard heating, you can still make the switch. Read on to learn more about adding central air to a baseboard-heated house.
Try these 12 top tips to keep your air conditioner working at maximum efficiency. Stay cool, and minimize energy costs with this expert air conditioning advice.
Learn how to save money on air conditioning costs this summer by following this handy guide all about your favorite cooling system.
Is it time for a new cooling system for your home? Check out this guide to get a head-to-head comparison of heat pump vs. air conditioner systems.
Air-source heat pumps are an energy-efficient way to heat and cool your home. Learn the pros and cons of this heating method.
Retrofitting your house for AC is, surprisingly, not too hard. Here’s what you’ll need to consider to make it happen.
