4.6 
148 *The Angi rating for Heating And Air Conditioning Service companies in Alton, 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 Alton, 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 August 01, 2026
Serving Alton, IL and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"They are real nice people to work with. I am impress with the stains they got out of my carpet. I will recommend them to my friends, Great customer service."
Serving Alton, IL and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Tim and Jeff were very fastidious in setting up, cleaning, and making sure the house was in good order when they left . We also had an Aeroseal treatment which followed with James and Connor. It did take some time to set up after the vents were cleaned and blown out, but the application of this polymer to close gaps in lthe galvinized steel ducts was remarkable."
Serving Alton, IL and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"A new hvac venture thatâ s starting off great Super customer service at a good price. Solved vexing thermostat issue quickly Arrived within an hour. Experienced and knowledgeable My new hvac first call"
+2
Serving Alton, IL and surrounding areas
Approved (Corporate)
In business since 1990
Free estimates
Emergency services offered
Your home's plumbing, HVAC, and electrical systems keep your family comfortable and safe. When something goes wrong or you're ready to upgrade, Morrison Plumbing, Heating, Air & Electrical is the Metro East team that delivers same-day service, upfront pricing, and work you can count on.\n\nWe serve Caseyville and surrounding communities through hot, humid summers and cold Illinois winters. Our technicians are licensed, insured, and trained to repair and install heating, cooling, plumbing, and electrical systems so your home stays reliable year-round.
+6
Serving Alton, IL and surrounding areas
Approved
In business since 2000
Warranties offered
Small jobs welcome
"It went very well. Power wash fence then applied a coat of stain."
+5
Serving Alton, IL and surrounding areas
Approved (Corporate)
In business since 1993
Free estimates
Emergency services offered
"2 friendly guys that did awesome work. Transfer switch works great and it's nice to see them clean up when done. I would definitely use the tiger again for electrical work."
+5
Serving Alton, IL and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"Great Experience had my air ducts cleaned worried about my Wife â s lungs , Mike and David did a wonderful job very courteous and cordial, cleaned up the mess when they were finished! Thank You Bob! !!!!!!!!"
+6
Serving Alton, IL and surrounding areas
Approved
In business since 2022
Emergency services offered
Warranties offered
""I had a new electric furnace installed, and I couldn't be happier with the experience. The Installation team was professional, knowledgeable, and completed the job efficiently. They took the time to explain how the system works, answered all of my questions, and ensured everything was operating properly before leaving. The customer service was exceptional from beginning to end. The staff was friendly, responsive, and kept me informed throughout the entire process. They made scheduling easy and treated my home with care and respect. The new furnace works great, answered I can already tell the difference in the comfort of my home. I highly recommend this company for anyone needing an electric furnace installation. Their quality workmanship and outstanding customer service exceeded my expectations.""
+3
Serving Alton, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Emergency services offered
Small jobs welcome
"The Steven Brand did a very professional and thorough job. They removed my kitchen cabinet and old stove top to create a space for a 30 inch stove."
+1
Serving Alton, IL and surrounding areas
Approved
Customers say: True professional
"No matter what problem you have, Clint is the man for the job! He not only fixed the plumbing issues I discovered during a remodel but was able to fix the electrical issues, flooring problems, install the cabinets, cut and grout backsplash tile, and fix a handful of minor issues that came up along the way. Clint is on time, dependable, courteous and respectful of your property - he even cleans up afterwards! I could not have completed this project without Clint Hatcher and highly recommend him to anyone who needs work done - you will not be disappointed!!"
From average costs to expert advice, get all the answers you need to get your job done.
Heat pumps are highly efficient and can help reduce heating and cooling costs. Learn about heat pump costs in St. Louis, Missouri, to set your budget.
When determining the AC coil cleaning cost in St Louis, MO, you’ll need to factor in the size, cleaning method, and type.
Heating and cooling system on the fritz? Discover the factors that go into HVAC repair costs in St. Louis, MO, and how you can save money on this crucial home update.
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.
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.
