*The Angi rating for Heating And Air Conditioning Service companies in Dieterich, 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 Dieterich, 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 September 24, 2026
Serving Dieterich, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"They came, diagnosed the problem and had it fixed within an hour. Very friendly and professional. Would recomend them to anyone."
Serving Dieterich, IL and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"On time, friendly & Professional. Knew what he was doing and affordable"
Serving Dieterich, 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 Dieterich, IL and surrounding areas
Approved
Im a dad of 8 children happily married and I'm a hard worker and I can do just about anything and just wanting some extra work .
Serving Dieterich, IL and surrounding areas
Approved
My name is David Michl, and Next Phase Power LLC is built on 20 years of hands-on electrical experience across residential, commercial, and industrial work. From home wiring to underground PVC trenching for services, fuel stations, and farms, I understand how important reliable power is to everyday life.\nProudly serving Jasper County, Effingham, and surrounding communities with dependable service, honest work, and quality craftsmanship. Fully licensed and insured, competitive pricing, and free estimates. Feel free to call or text anytime, and don’t forget to leave a review here or on our Facebook page. Thank you for your support!
Serving Dieterich, 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 Dieterich, 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 Dieterich, IL and surrounding areas
Free estimates
Emergency services offered
Credit card accepted
"He was very professional and clearly explained what the problem was."
Serving Dieterich, 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 Dieterich, 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."
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