4.9 
20 *The Angi rating for Heating And Air Conditioning Service companies in Carmi, 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 Carmi, 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 June 11, 2026
Serving Carmi, IL and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Very professional and competent service at a very reasonable price. I will certainly use them for any HVAV work needed."
Serving Carmi, IL and surrounding areas
Approved
In business since 1990
Free estimates
Credit card accepted
"They were prompt and did the job in a timely manner. Polite and explained how to use the system."
Serving Carmi, IL and surrounding areas
Approved
Looking to make a difference big or small!
Serving Carmi, IL and surrounding areas
Approved
In business since 2002
Free estimates
Credit card accepted
Service Tek, Inc., provides full-service heating and AC installations and repair work to the Olney area. We are highly trained in today's efficient product lines. We also install thermal units.
Serving Carmi, IL and surrounding areas
Approved
I’m a hardworking person who doesn’t like to leave projects half finished or looking sloppy, I can be a bit of a perfectionist. I’ve always fixed and built almost everything I needed myself and I take pride in being self sufficient. I’ve been an electrician for a year and half now and before that I was fabricating aerators for private residences. I have a wife and two children, so I can handle the chaos of a whole house remodel even if you decide to alter any details halfway through.
Serving Carmi, IL and surrounding areas
In business since 2023
Free estimates
Warranties offered
"Does good work for a good price"
Serving Carmi, IL and surrounding areas
In business since 1970
Free estimates
Emergency services offered
"Got my ductwork cleaned out and replace 23 outlet covers. All done in record time. Very friendly and professional and explained the whole process as he went and showed me all the junk that came out of my ducts. Cleaned up as he went along and couldn't even tell he had been here except that there's no dust floating around in the air now."
Serving Carmi, IL and surrounding areas
Free estimates
Emergency services offered
Credit card accepted
"He was very professional and clearly explained what the problem was."
Serving Carmi, 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."
Serving Carmi, IL and surrounding areas
In business since 2010
Emergency services offered
Credit card accepted
"We own a home-based business which relies heavily on our computers operating efficiently. We have had a service contract with another computer repair business for several years. Recently when we were having problems with our computers, we tried contacting our service contractor multiple times. He never responded. Feeling frustrated, I contacted James at North Alabama Technical Services and explained our situation. He instantly came to our rescue. He "cleaned-up" our computers and took care of all the problems we were experiencing. He went above and beyond to help us in our dire time of need. We would strongly recommend James and his company for computer service needs. We have now retained him on a service contract and are looking forward to working with him in the future."
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.
