*The Angi rating for Heating And Air Conditioning Service companies in Dahlgren, 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 Dahlgren, 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 17, 2026
Serving Dahlgren, IL and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
"Jeremiah was absolutely wonderful! Got the job done extremely fast. Would definitely recommend to anyone that needs heating and cooling services"
Serving Dahlgren, IL and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
"Professional, courteous, very nice staff, always pleasant to deal with, and did their job Johnny on the spot!"
Serving Dahlgren, 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 Dahlgren, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"Vinc and his crew at VMK did and excellent job and I highly recommend there services ! Dave Caputo"
Serving Dahlgren, 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 Dahlgren, IL and surrounding areas
In business since 2017
Free estimates
Credit card accepted
"They installed a HVAC unit in a new building/office."
+1
Serving Dahlgren, IL and surrounding areas
In business since 2016
Free estimates
Emergency services offered
"We were in a tough situation and they got a new unit for us in less than one day!"
Serving Dahlgren, 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 Dahlgren, IL and surrounding areas
Free estimates
Emergency services offered
Credit card accepted
"He was very professional and clearly explained what the problem was."
Serving Dahlgren, IL and surrounding areas
In business since 1893
Free estimates
Warranties offered
"Completed the project in one day; good work, no problems. I recommend them to others."
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