Get matched with top heating and air conditioning pros in O Fallon, IL
There are 11 highly-rated local heating and air conditioning pros.
TRUSTED BY O FALLON, IL HOMEOWNERS
4.7 
313 Verified Reviews for Heating And Air Conditioning Service pros in O Fallon, IL
*The Angi rating for Heating And Air Conditioning Service companies in O Fallon, 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 O Fallon, 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 20, 2025
Heating and air conditioning pros in O Fallon
At Anytime Heating & Cooling, our goal is to provide the best heating and cooling services in the area. We want to make sure you are comfortable all year round, and our technicians are ready to help with all of your heating and cooling needs. From heating and air conditioning repairs and installations to general maintenance and 24/7 emergency services, we have you covered. All of our work is guaranteed, and we are proud to offer upfront pricing and same-day appointments to make your comfort our top priority
"Anytime Heating and cooling was awesome. I called to see if they could come out to see what was going on with our furnace. It was the coldest day of the year! Our home is over a 100 years old and the furnace was once a coal furnace but converted into gas. It needed a part replaced. No other HVAC company had any experience working on our type of unit, but Anytime knew exactly what to do! We are so grateful for them and will continue using them as long as we own our home. I would definitely recommend them for your HVAC needs!"
Anthony M on August 2024
At Anytime Heating & Cooling, our goal is to provide the best heating and cooling services in the area. We want to make sure you are comfortable all year round, and our technicians are ready to help with all of your heating and cooling needs. From heating and air conditioning repairs and installations to general maintenance and 24/7 emergency services, we have you covered. All of our work is guaranteed, and we are proud to offer upfront pricing and same-day appointments to make your comfort our top priority
"Anytime Heating and cooling was awesome. I called to see if they could come out to see what was going on with our furnace. It was the coldest day of the year! Our home is over a 100 years old and the furnace was once a coal furnace but converted into gas. It needed a part replaced. No other HVAC company had any experience working on our type of unit, but Anytime knew exactly what to do! We are so grateful for them and will continue using them as long as we own our home. I would definitely recommend them for your HVAC needs!"
Anthony M on August 2024
In business since 2005, you can rely on us to provide you with comprehensive heating and cooling services. Our locally and family-owned and operated business has over 25 years of experience in the industry.
"Installed new AC and heater unit in April 2023. Had used Garrett prior as I found them reasonably priced. After the install, numerous safety/code violations were found when the unit was inspected. Among them were not adding a safety drip pan under the furnace, not installing a coil condensate drain correctly, running a flexible gas line into the furnace cabinet (a code violation), not terminating the electric correctly (a code violation), leaving exposed wires on the AC unit outside. The new owner claims it's not his responsibility to fix these issues. I'd steer away and go with someone that wants to back up their work (sorry, it's your work if you buy the company). Update as of 01/15/2025 Response to review and company response Jan 2025. Company DID NOT come out or even reach out to me regarding this. Tape and duct work repairs? When did you come to my house? Shows how dishonest this company is. Stay clear. Only excuses from this company (for example. we bought our business in 2024, not our problem!)"
E R on January 2025
In business since 2005, you can rely on us to provide you with comprehensive heating and cooling services. Our locally and family-owned and operated business has over 25 years of experience in the industry.
"Installed new AC and heater unit in April 2023. Had used Garrett prior as I found them reasonably priced. After the install, numerous safety/code violations were found when the unit was inspected. Among them were not adding a safety drip pan under the furnace, not installing a coil condensate drain correctly, running a flexible gas line into the furnace cabinet (a code violation), not terminating the electric correctly (a code violation), leaving exposed wires on the AC unit outside. The new owner claims it's not his responsibility to fix these issues. I'd steer away and go with someone that wants to back up their work (sorry, it's your work if you buy the company). Update as of 01/15/2025 Response to review and company response Jan 2025. Company DID NOT come out or even reach out to me regarding this. Tape and duct work repairs? When did you come to my house? Shows how dishonest this company is. Stay clear. Only excuses from this company (for example. we bought our business in 2024, not our problem!)"
E R on January 2025
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"They was very professional and clean "
Richard e on June 2025
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
"They was very professional and clean "
Richard e on June 2025
Garrett Heating & Cooling, are the premier heating and cooling company serving in Illinois for seven years. We do residential and commercial and pride ourselves on customer satisfaction. Call today!
"The company is very thorough and professional. I hired them to do a tune up on my a/c unit. Their prices are reasonable. I will use them again."
THAILA M on May 2023
Garrett Heating & Cooling, are the premier heating and cooling company serving in Illinois for seven years. We do residential and commercial and pride ourselves on customer satisfaction. Call today!
"The company is very thorough and professional. I hired them to do a tune up on my a/c unit. Their prices are reasonable. I will use them again."
THAILA M on May 2023
Razor Repair is a family and disabled veteran owned A/C and Refrigeration Diagnostic and Repair service business, while also providing Applicance Repair and Gardening services. Our vision is to not only do the job right the first time and at a reasonable time but to pass on our savings to every customer at a 15% lower price than the national average.
Razor Repair is a family and disabled veteran owned A/C and Refrigeration Diagnostic and Repair service business, while also providing Applicance Repair and Gardening services. Our vision is to not only do the job right the first time and at a reasonable time but to pass on our savings to every customer at a 15% lower price than the national average.
HVAC repair, new install, all mechanical services.
HVAC repair, new install, all mechanical services.
BIG BANG HVACR is an HVAC (Heating, Ventilation, Air Conditioning) company that keeps clients "banging cool" or "banging warm" for the particular season. The company does an outstanding services on AC units, Refrigerators, Mini Fridge, Standard Freezers, Deep Freezers, Gas Stoves, Electric Stoves, Furnaces, Dryers, Thermostat Installations, Toilet Installations and does troubleshooting and maintenance repairs on non-working systems. I service St. Clair County, Madison County (Collinsville and Edwardsville), St. Louis County and St. Louis City. Anyone who lives outside of the target areas, must contact me directly before booking. Please make sure to book the correct service. Please note if you are using a credit card to pay for the remaining balance, there will be a 4% transaction fee through my booking site.
BIG BANG HVACR is an HVAC (Heating, Ventilation, Air Conditioning) company that keeps clients "banging cool" or "banging warm" for the particular season. The company does an outstanding services on AC units, Refrigerators, Mini Fridge, Standard Freezers, Deep Freezers, Gas Stoves, Electric Stoves, Furnaces, Dryers, Thermostat Installations, Toilet Installations and does troubleshooting and maintenance repairs on non-working systems. I service St. Clair County, Madison County (Collinsville and Edwardsville), St. Louis County and St. Louis City. Anyone who lives outside of the target areas, must contact me directly before booking. Please make sure to book the correct service. Please note if you are using a credit card to pay for the remaining balance, there will be a 4% transaction fee through my booking site.
We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!
"If I could give a zero I would. They gave us a time to be to us between 7 am - 11 am. Then was told they would come after lunch. It’s almost like and can’t get ahold of them they finally answer and say they will be there at 4. Call at the 3:50 and said technician was in route and will be there at 4. It’s 5 and no one ever showed up still could not get ahold of anyone. Very disorganized and unreliable company to hire."
Tynesha O on June 2024
We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!
"If I could give a zero I would. They gave us a time to be to us between 7 am - 11 am. Then was told they would come after lunch. It’s almost like and can’t get ahold of them they finally answer and say they will be there at 4. Call at the 3:50 and said technician was in route and will be there at 4. It’s 5 and no one ever showed up still could not get ahold of anyone. Very disorganized and unreliable company to hire."
Tynesha O on June 2024
"For more than 15 years, First Choice services has provided both commercial and residential appliance repairs and hvac services in the Greater St. Louis area. We take pleasure in offering premium work at competitive prices. We service all makes and models. Our service technicians are skilled and qualified to carry out the task at hand. We provide trustworthy service with a quick response, when you are having issues with your appliances or hvac choose our company to be your first choice
"For more than 15 years, First Choice services has provided both commercial and residential appliance repairs and hvac services in the Greater St. Louis area. We take pleasure in offering premium work at competitive prices. We service all makes and models. Our service technicians are skilled and qualified to carry out the task at hand. We provide trustworthy service with a quick response, when you are having issues with your appliances or hvac choose our company to be your first choice
Hofler Service Company is a family-owned property management company operating out of the Fairview Heights area of Illinois. We specializes in General Maintenance, Cleaning, Installation & Repair of appliances/ hardware throughout your home, ensuring customer satisfaction guarantee.
Hofler Service Company is a family-owned property management company operating out of the Fairview Heights area of Illinois. We specializes in General Maintenance, Cleaning, Installation & Repair of appliances/ hardware throughout your home, ensuring customer satisfaction guarantee.
FAQs for heating and air conditioning service projects in O Fallon, IL
Knowing how long your existing HVAC units can last is essential to determine if you need a repair or replacement. Typically, most modern air conditioning units can last between 15 to 20 years, and most furnaces can work properly for 15 to 30 years. If your HVAC system is on the older side and you decide to replace one unit, it might make sense to replace both simultaneously to save on costs and future hassle.
While different HVAC contractors might offer higher or lower prices than competitors, the best time to replace your HVAC system is when customer demand is low. The beginning of summer and the beginning of winter bring the most demand for HVAC systems, so if you can, consider replacing your HVAC units in the early spring or fall. Many HVAC companies offer special off-season coupons that help lower the overall cost.
The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.
Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.
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