Top-rated central a/c service or repairers.

Get matched with top central a/c service or repairers in Saint Charles, MO

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Central a/c service or repairers in Saint Charles


locally owned and operated. "No excuses just solutions!" Slogan for company mon-fri 7-7 Sat 8 - 2 Accredited


Avatar for Fresh Air Heating & Cooling

Fresh Air Heating & Cooling

4.81(
263
)
Approved Pro

Fresh Air Heating & Cooling

4.81(
263
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
72 local quotes requested

Fresh Air has been family owned and operated since 1987. Family members Patrick, Tim, Katie and Kevin work together to maintain a culture of excellent service. Fresh Air employs 24 people equally dedicated to constant improvement and a consistent delivery of services. A happy customer is priority #1. Choose Fresh Air and experience the exceptional service you deserve. Fresh Air is a 10-time Super Service Award recipient!! (2009-2021). Additional contact name - Katie Sinn. Additional e-mail - kesinn@iNeedFreshAir.com

"Great customer service when I called for service. Expert technician that diagnosed the problem and quickly repaired my AC."

Tim R on April 2024

Fresh Air has been family owned and operated since 1987. Family members Patrick, Tim, Katie and Kevin work together to maintain a culture of excellent service. Fresh Air employs 24 people equally dedicated to constant improvement and a consistent delivery of services. A happy customer is priority #1. Choose Fresh Air and experience the exceptional service you deserve. Fresh Air is a 10-time Super Service Award recipient!! (2009-2021). Additional contact name - Katie Sinn. Additional e-mail - kesinn@iNeedFreshAir.com

"Great customer service when I called for service. Expert technician that diagnosed the problem and quickly repaired my AC."

Tim R on April 2024


Avatar for Anton's Plumbing, Heating/Cooling & Energy Experts

Anton's Plumbing, Heating/Cooling & Energy Experts

4.78(
454
)
Approved Pro

Anton's Plumbing, Heating/Cooling & Energy Experts

4.78(
454
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
302 local quotes requested

Anton's has been in business for 43 years and maintains an A+ rating with the BBB. We have the highest Google rating in St. Louis. We offer manufacture rebates, and 0% financing for up to 60 months! We currently employ 72 team members who receive customer service training twice per week. Our service technicians have been professionally trained on our 6 step Anton's service system to ensure our customers receive the same GREAT service at a GREAT price each and every visit!! We provide upfront pricing and don't complete any repairs with out approval. We are the only company in St. Louis to offer lifetime warranty on repairs for our UP plan members!!!! Senior Discount- $10 off a service or $100 off complete new system Emergency Service phone number- 314-499-8400

"Excellent service. Super friendly and helpful. Went over all options and pricing with me before helping me through the loan process."

Denise N on November 2025

Anton's has been in business for 43 years and maintains an A+ rating with the BBB. We have the highest Google rating in St. Louis. We offer manufacture rebates, and 0% financing for up to 60 months! We currently employ 72 team members who receive customer service training twice per week. Our service technicians have been professionally trained on our 6 step Anton's service system to ensure our customers receive the same GREAT service at a GREAT price each and every visit!! We provide upfront pricing and don't complete any repairs with out approval. We are the only company in St. Louis to offer lifetime warranty on repairs for our UP plan members!!!! Senior Discount- $10 off a service or $100 off complete new system Emergency Service phone number- 314-499-8400

"Excellent service. Super friendly and helpful. Went over all options and pricing with me before helping me through the loan process."

Denise N on November 2025


Avatar for Rhymes Heating & Cooling

Rhymes Heating & Cooling

4.91(
173
)
Approved Pro

Rhymes Heating & Cooling

4.91(
173
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
35 local quotes requested

Rhymes Heating & Cooling is a family owned and operated business that has a dedicated group of team members in place to serve our customers air conditioner and heating needs. Give us a chance to meet your needs and you will be glad you did. As always we appreciate the opportunity to earn your business.

"Rhymes was amazing! They were courteous, punctual, hard working, and very knowledgeable. I love how it's a family business right here in St. Louis. They did a wonderful job and I'm so happy we went with them. We will absolutely use Rhymes for everything heating and cooling related from now on."

Jessica G on September 2024

Rhymes Heating & Cooling is a family owned and operated business that has a dedicated group of team members in place to serve our customers air conditioner and heating needs. Give us a chance to meet your needs and you will be glad you did. As always we appreciate the opportunity to earn your business.

"Rhymes was amazing! They were courteous, punctual, hard working, and very knowledgeable. I love how it's a family business right here in St. Louis. They did a wonderful job and I'm so happy we went with them. We will absolutely use Rhymes for everything heating and cooling related from now on."

Jessica G on September 2024


Avatar for Beaty Home Improvements

Beaty Home Improvements

4.63(
585
)
Approved Pro

Beaty Home Improvements

4.63(
585
)
Approved Pro
Customers say: Super punctual
446 local quotes requested
19 years of experience

Beaty Home Improvements has been providing professional quality remodeling services in St. Louis for over 20 years. Our attention to detail ensures that every kitchen and bathroom project is completed to the highest standard. Customer satisfaction is our top priority. Contact us today for all your home improvement needs.

"Nick came through and evaluated exactly what I needed done. He replaced the threshold on the door in my den. We just replaced the floors, and the floors are higher up. Nick did a great job, bought the parts needed, placed the threshold, sealed everything up, and now the doorway is sealed tight and no more issues. I will be calling Beaty and Nick again for other work."

Roderick W on November 2025

Beaty Home Improvements has been providing professional quality remodeling services in St. Louis for over 20 years. Our attention to detail ensures that every kitchen and bathroom project is completed to the highest standard. Customer satisfaction is our top priority. Contact us today for all your home improvement needs.

"Nick came through and evaluated exactly what I needed done. He replaced the threshold on the door in my den. We just replaced the floors, and the floors are higher up. Nick did a great job, bought the parts needed, placed the threshold, sealed everything up, and now the doorway is sealed tight and no more issues. I will be calling Beaty and Nick again for other work."

Roderick W on November 2025


Avatar for Liberty Heating & Cooling

Liberty Heating & Cooling

4.86(
44
)
Approved Pro

Liberty Heating & Cooling

4.86(
44
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
18 local quotes requested

We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.

"Called Sam on Friday for quote for water heater replacement. Said he could do Monday afternoon or Tuesday morning. Received call Monday morning to see if he could come on over to do replacement, what a pleasant surprise! Sam arrived shortly after with water heater we discussed & all supplies needed , no running around to pickup stuff. Job completed in timely manner. Old unit hauled off and job site all cleaned. That’s a big deal to me. Will not hesitate to recommend Liberty to friends & relatives ! Thanks Sam , Dave & Roxanne"

Dave V on October 2025

We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.

"Called Sam on Friday for quote for water heater replacement. Said he could do Monday afternoon or Tuesday morning. Received call Monday morning to see if he could come on over to do replacement, what a pleasant surprise! Sam arrived shortly after with water heater we discussed & all supplies needed , no running around to pickup stuff. Job completed in timely manner. Old unit hauled off and job site all cleaned. That’s a big deal to me. Will not hesitate to recommend Liberty to friends & relatives ! Thanks Sam , Dave & Roxanne"

Dave V on October 2025


Avatar for Hosack Plumbing Heating & Cooling

Hosack Plumbing Heating & Cooling

4.85(
318
)
Approved Pro

Hosack Plumbing Heating & Cooling

4.85(
318
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
224 local quotes requested

With over twenty-five years of experience in the industry, Hosack Plumbing Heating & Cooling is the right team to trust with all of your plumbing and heating and cooling needs. Our professional St. Louis technicians are highly skilled, extensively trained, extremely knowledgeable, and expertly proficient. We specialize in commercial and residential plumbing as well as residential heating and cooling. Our technicians will do everything possible to ensure that you have the most reliable and efficient plumbing and hvac systems possible.

"Mike was awesome, very knowledgeable and friendly. Efficiently got the furnace running as it should be! Even took the time to educate me on what the issue was and explained what he did to fix it. Highly recommend!"

Stephanie W on December 2025

With over twenty-five years of experience in the industry, Hosack Plumbing Heating & Cooling is the right team to trust with all of your plumbing and heating and cooling needs. Our professional St. Louis technicians are highly skilled, extensively trained, extremely knowledgeable, and expertly proficient. We specialize in commercial and residential plumbing as well as residential heating and cooling. Our technicians will do everything possible to ensure that you have the most reliable and efficient plumbing and hvac systems possible.

"Mike was awesome, very knowledgeable and friendly. Efficiently got the furnace running as it should be! Even took the time to educate me on what the issue was and explained what he did to fix it. Highly recommend!"

Stephanie W on December 2025


Avatar for RDI CONTRACTORS LLC

RDI CONTRACTORS LLC

5.00(
2
)
Approved Pro

RDI CONTRACTORS LLC

5.00(
2
)
Approved Pro
Emergency services offered

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Here was here as soon as we called wasn’t as expensive as other places and had the issue fixed quick and very nice and polite man I would recommend him to anyone "

Charlie R on July 2025

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Here was here as soon as we called wasn’t as expensive as other places and had the issue fixed quick and very nice and polite man I would recommend him to anyone "

Charlie R on July 2025


Tiger Plumbing, Heating, Air Conditioning, & Electrical Services

4.04(
69
)
Approved Pro

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services

4.04(
69
)
Approved Pro
Customers say: Quick response
356 local quotes requested
32 years of experience

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!

"He was working alone, and did a great job!"

Craig B on December 2025

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!

"He was working alone, and did a great job!"

Craig B on December 2025

...
Showing 1-10 of 1021
FAQs for central a/c service or repair projects in Saint Charles, MO

A condenser fan motor is a crucial part of your air conditioner that prevents the compressor from overheating. It pulls heat from your AC unit to cool the refrigerant moving through the condenser coils. This allows your system to blow cool air and keeps everything running smoothly.

The most common causes of AC fan motor failure include loss of lubricant in the system due to overheating and a rusted or leaking run capacitor. Poor lubrication can also cause failure in the belt drive, which may impact the AC fan motor. Weather and electrical components can also affect your AC. For example, a storm could send water into your motor windings and damage the internal components.

Air conditioner fan motors last about 12 years on average, though they can last longer if maintained well. This includes keeping them clean and cooled as needed with annual air conditioner checkups. Routine maintenance is essential to catch AC fan issues early. An HVAC inspection can cost between $70 and $500, while AC cleaning services may range from $100 to $400.

A broken AC fan motor may need replacement because this part usually can’t be repaired. Several things indicate it’s time to replace your AC fan motor, including buzzing noises, a constantly running fan, unusually high energy bills, or an aging system. If you notice these signs, call an HVAC pro for help before the faulty motor starts to strain other parts of the AC system.

There are clear warning signs of a bad AC fan motor, including unusual interruptions in the fan operation. The motor might be malfunctioning if you hear weird noises like grinding or rattling or if the fan continues to spin when the unit is off. These indicators compromise your AC’s cooling performance and increase your energy costs. Addressing these issues immediately by contacting a trusted HVAC professional prevents further damage and safeguards your HVAC's efficiency.

Replacing your AC fan motor takes a professional one to four hours. The technician will start by assessing your system and safely removing the damaged motor. If a new part needs to be ordered, it might take a few days. Once the part is available, your pro will install it properly and make sure your system is running smoothly.

The Saint Charles, MO homeowners’ guide to central a/c service or repairs

From average costs to expert advice, get all the answers you need to get your job done.

  • Detail of a HVAC system outside a brick house

    The cost of replacing an AC unit fan motor depends on warranties, labor, season, and more. This cost guide covers everything you need to know about this HVAC part.

  • A boy changing thermostat’s temperature using a smartphone

    Budget for AC coil cleaning costs based on factors such as cleaning frequency, coil type, cleaning method, accessibility, ongoing maintenance, and more.

  • home air conditioner being recharged with freon

    Need an AC Recharge? Here’s how much it costs, what factors affect cost, and what to expect.

  • House humidifier on a return duct

    Wondering who installs whole-house humidifiers? Hire a licensed HVAC technician. Learn what they do, other pro options, and how to hire confidently