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Find Central a/c service or repairers in O Fallon

Tim's Refrigeration

2021 Highway C
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Tim's Refrigeration

2021 Highway C
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
22 years of experience

Tim's Refrigeration is Missouri's premier HVAC contracting service provider. Call today to set up an appointment with our staff. We look forward to your call.

Tim's Refrigeration is Missouri's premier HVAC contracting service provider. Call today to set up an appointment with our staff. We look forward to your call.


Wilkes Home Repairs

2468 Mill Valley Dr
5.00(
13
)
Approved Pro

Wilkes Home Repairs

2468 Mill Valley Dr
5.00(
13
)
Approved Pro
44 local quotes requested
22 years of experience

At Wilkes Home Repair , my company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Very timely worked very professionally advised me of all he was doing got my ac running then verified it was correct"

Wayne F on September 2025

At Wilkes Home Repair , my company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Very timely worked very professionally advised me of all he was doing got my ac running then verified it was correct"

Wayne F on September 2025


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

Anton's Plumbing, Heating/Cooling Energy Experts

950 Bolger Court
4.88(
68
)
Approved Pro

Anton's Plumbing, Heating/Cooling Energy Experts

950 Bolger Court
4.88(
68
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
25 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Both the estimator Kevin the two installers who visited my home were very professional and kind. They answered all my questions and provided a very reasonable price for the installation of the attic insulation. I feel I was very informed on the federal rebate that was available for this installation, as well as on the recommendations of quantity of insulation I needed per residential standards and codes. I would recommend Anton and will use them in the future for my HVAC needs!"

Haley D on November 2024

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Both the estimator Kevin the two installers who visited my home were very professional and kind. They answered all my questions and provided a very reasonable price for the installation of the attic insulation. I feel I was very informed on the federal rebate that was available for this installation, as well as on the recommendations of quantity of insulation I needed per residential standards and codes. I would recommend Anton and will use them in the future for my HVAC needs!"

Haley D on November 2024


Avatar for Hoffmann Brothers

Hoffmann Brothers

1025 Hanley Industrial Ct.
4.72(
38
)
Approved Pro

Hoffmann Brothers

1025 Hanley Industrial Ct.
4.72(
38
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
25 years of experience

The Heating and Air Conditioning Contractors at Hoffmann Brothers have provided the greater St. Louis area with reliable and professional services for more than 40 years. When you are in need of heating, ventilation, and air conditioning (HVAC) contractors for any of your heating or air conditioning repair or replacement service needs, call upon us at (314) 664-3011 or contact our team online.

"Good"

Andrew W on August 2024

The Heating and Air Conditioning Contractors at Hoffmann Brothers have provided the greater St. Louis area with reliable and professional services for more than 40 years. When you are in need of heating, ventilation, and air conditioning (HVAC) contractors for any of your heating or air conditioning repair or replacement service needs, call upon us at (314) 664-3011 or contact our team online.

"Good"

Andrew W on August 2024


Avatar for Fresh Air Heating & Cooling

Fresh Air Heating & Cooling

612 Spirit Valley East Dr
4.77(
270
)
Approved Pro

Fresh Air Heating & Cooling

612 Spirit Valley East Dr
4.77(
270
)
Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
357 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 Liberty Heating & Cooling

Liberty Heating & Cooling

3236 Ridgetop View Drive
4.81(
42
)
Approved Pro

Liberty Heating & Cooling

3236 Ridgetop View Drive
4.81(
42
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
549 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.

"Excellent. He was very kind and informative. Went way above and beyond"

Michael H on September 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.

"Excellent. He was very kind and informative. Went way above and beyond"

Michael H on September 2025


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

Anton's Plumbing, Heating/Cooling & Energy Experts

950 Bolger Ct
4.67(
484
)
Approved Pro

Anton's Plumbing, Heating/Cooling & Energy Experts

950 Bolger Ct
4.67(
484
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2178 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

"Did good work, fixed our loose plumbing quickly"

Griffin M on July 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

"Did good work, fixed our loose plumbing quickly"

Griffin M on July 2025


Avatar for Hosack Plumbing Heating & Cooling

Hosack Plumbing Heating & Cooling

110 W Pitman St
4.78(
333
)
Approved Pro

Hosack Plumbing Heating & Cooling

110 W Pitman St
4.78(
333
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
1733 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.

"Dan and Bill were great to work with and did excellent work. They were fast, professional and friendly"

Clare S on November 2024

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.

"Dan and Bill were great to work with and did excellent work. They were fast, professional and friendly"

Clare S on November 2024


Mr. Handyman of St Charles and Chesterfield Valley

4051 North Saint Peters Parkway
4.70(
20
)
Approved Pro

Mr. Handyman of St Charles and Chesterfield Valley

4051 North Saint Peters Parkway
4.70(
20
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
650 local quotes requested

With everything else on your to-do list, even thinking about tackling home or business repairs is probably the last thing you want to do. An ever-growing list of tasks doesn’t have to derail or disrupt your day when you have our professional handymen ready to make short work of all your home and business repair tasks! The team at Mr. Handyman of St. Charles Co. and Chesterfield Valley is up for the challenge of completing your most extensive home improvement duties or the smallest home repair jobs. We pride ourselves on providing the utmost in customer service, offering our Done Right Promise. This means we stand behind our workmanship and ensure that if you’re unhappy with your service, we will make it right. The care we show our customers and the dedication to our work are just some of the reasons our St. Charles County and Chesterfield Valley customers choose Mr. Handyman over anyone else.

"It went pretty good"

Shell S on September 2025

With everything else on your to-do list, even thinking about tackling home or business repairs is probably the last thing you want to do. An ever-growing list of tasks doesn’t have to derail or disrupt your day when you have our professional handymen ready to make short work of all your home and business repair tasks! The team at Mr. Handyman of St. Charles Co. and Chesterfield Valley is up for the challenge of completing your most extensive home improvement duties or the smallest home repair jobs. We pride ourselves on providing the utmost in customer service, offering our Done Right Promise. This means we stand behind our workmanship and ensure that if you’re unhappy with your service, we will make it right. The care we show our customers and the dedication to our work are just some of the reasons our St. Charles County and Chesterfield Valley customers choose Mr. Handyman over anyone else.

"It went pretty good"

Shell S on September 2025


Tandem Trades LLC

510 Ortmann Place
4.95(
61
)
Approved Pro

Tandem Trades LLC

510 Ortmann Place
4.95(
61
)
Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
1007 local quotes requested

Tandem Trades is a local family-owned company that provides repair and maintenance services which include, but are not limited to: Bathroom Repairs & Updating Plumbing Repairs & Installation Replacement of Interior & Exterior Lighting General Painting Window Treatment Installation Deck & Trim Repair Small Flooring Jobs Tile - Wood - Laminate Installation Garage & Basement Clean-Out Skid Steer Work We offer color and design assistance as well as personal shopping for fixtures, hardware, millwork and other items to suit your project. If you've been inspired by something online but are having difficulty knowing how or where to start, let us know and we'll help you out or take it on. We'll even assist in shopping for that perfect piece to transform or repurpose. Call or text 603-834-1416 and let us help! Professional and personal references are available upon request.

"Perfect removed a basketball hoop"

Trevor K on August 2025

Tandem Trades is a local family-owned company that provides repair and maintenance services which include, but are not limited to: Bathroom Repairs & Updating Plumbing Repairs & Installation Replacement of Interior & Exterior Lighting General Painting Window Treatment Installation Deck & Trim Repair Small Flooring Jobs Tile - Wood - Laminate Installation Garage & Basement Clean-Out Skid Steer Work We offer color and design assistance as well as personal shopping for fixtures, hardware, millwork and other items to suit your project. If you've been inspired by something online but are having difficulty knowing how or where to start, let us know and we'll help you out or take it on. We'll even assist in shopping for that perfect piece to transform or repurpose. Call or text 603-834-1416 and let us help! Professional and personal references are available upon request.

"Perfect removed a basketball hoop"

Trevor K on August 2025

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FAQs for central a/c service or repair projects in O Fallon, 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 O Fallon, 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.

  • Technician repairing air conditioner

    HomeAdvisor's Air Conditioning Repair Cost Guide gives the average price to fix an AC unit in your house. Find the cost of recharging the AC or fixing a freon leak. Get the price to repair or replace a compressor, handler, thermostat, duct, and more.

  • An AC system in the backyard of a house

    This guide explores the average cost of replacing your AC compressor and all of the factors that go into it, including size, type, and brand.

  • 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.