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Find Central a/c service or repairers in Defiance

Avatar for ARCO Heating & Cooling

ARCO Heating & Cooling

2000 Exchange Drive
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

ARCO Heating & Cooling

2000 Exchange Drive
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
14 local quotes requested
62 years of experience

For more than 60 years, ARCO Heating & Cooling has been the local HVAC company that residents and businesses turn to for their heating and cooling needs. What began as a small business has grown into a cornerstone of the St. Charles, St. Louis, & Illinois communities, providing dependable service designed to keep our neighbors comfortable year-round. As a family-owned, local HVAC company, we’re more than just a service provider—we’re part of the community. We live and work right here in the St. Charles, St. Louis, & Illinois Metro areas, so we understand the unique climate challenges our neighbors face. This local connection fuels our dedication to providing personalized service and dependable solutions that make life easier for our customers.

For more than 60 years, ARCO Heating & Cooling has been the local HVAC company that residents and businesses turn to for their heating and cooling needs. What began as a small business has grown into a cornerstone of the St. Charles, St. Louis, & Illinois communities, providing dependable service designed to keep our neighbors comfortable year-round. As a family-owned, local HVAC company, we’re more than just a service provider—we’re part of the community. We live and work right here in the St. Charles, St. Louis, & Illinois Metro areas, so we understand the unique climate challenges our neighbors face. This local connection fuels our dedication to providing personalized service and dependable solutions that make life easier for our customers.

Avatar for Swiss Air Heating & Cooling LLC

Swiss Air Heating & Cooling LLC

406 E Wabash St
4.20(
5
)
•Approved Pro

Swiss Air Heating & Cooling LLC

406 E Wabash St
4.20(
5
)
•Approved Pro
31 years of experience

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.

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.

Avatar for First In General Maintenance

First In General Maintenance

4267 Ellenwood Ave
5.00(
1
)
•Approved Pro

First In General Maintenance

4267 Ellenwood Ave
5.00(
1
)
•Approved Pro
Free onsite estimate

Want quick, reliable and experienced service? We are here to help with all your residential needs! From HVAC, electrical, painting, plumbing, general maintenance, repair, and installation. We also offer rental make readies for properties owners and landlords. Serving the community as both full time firefighters/Paramedics and handymen!

"Jocquise was very professional. I hired him to install a new sink and toilet in my bathroom. Not only was he very knowledgeable but he was also very helpful in deciding what style we wanted and gave us input of what was most practical and value for our buck prior to purchase and installation. We will be going through him for the rest of our projects "

dre m on October 2025

Want quick, reliable and experienced service? We are here to help with all your residential needs! From HVAC, electrical, painting, plumbing, general maintenance, repair, and installation. We also offer rental make readies for properties owners and landlords. Serving the community as both full time firefighters/Paramedics and handymen!

"Jocquise was very professional. I hired him to install a new sink and toilet in my bathroom. Not only was he very knowledgeable but he was also very helpful in deciding what style we wanted and gave us input of what was most practical and value for our buck prior to purchase and installation. We will be going through him for the rest of our projects "

dre m on October 2025

Avatar for Mechanical Climate Solutions, LLC

Mechanical Climate Solutions, LLC

1021 Fox Chase Industrial Drive
4.88(
64
)
•Approved Pro

Mechanical Climate Solutions, LLC

1021 Fox Chase Industrial Drive
4.88(
64
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

Mechanical Climate Solutions, LLC has over 16 years of experience in both Commercial and Residential Service or Installations for all types of Air Conditioning and Furnace Equipment. We also handle Commercial refrigeration. For repairs, service or Installations of HVAC units please contact Robert. We look forward to working with you.

"We got a call from MCS to schedule an appointment as we needed soon. The tech came as promised, diagnosed AC unit, did the repair, and fixed the AC unit."

Elaine W on June 2025

Mechanical Climate Solutions, LLC has over 16 years of experience in both Commercial and Residential Service or Installations for all types of Air Conditioning and Furnace Equipment. We also handle Commercial refrigeration. For repairs, service or Installations of HVAC units please contact Robert. We look forward to working with you.

"We got a call from MCS to schedule an appointment as we needed soon. The tech came as promised, diagnosed AC unit, did the repair, and fixed the AC unit."

Elaine W on June 2025

Avatar for Schraer Heating and Air Conditioning

Schraer Heating and Air Conditioning

504 W Booneslick Rd
5.00(
1
)
•Approved Pro

Schraer Heating and Air Conditioning

504 W Booneslick Rd
5.00(
1
)
•Approved Pro
66 local quotes requested
79 years of experience

Trusted since 1946, Schraer Air Experts offers top-notch heating, cooling, air quality and hot water services in Warren, Montgomery, St Charles and Lincoln County MO.

Trusted since 1946, Schraer Air Experts offers top-notch heating, cooling, air quality and hot water services in Warren, Montgomery, St Charles and Lincoln County MO.

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 RDI CONTRACTORS LLC

RDI CONTRACTORS LLC

8024 STATE ROUTE 30
5.00(
2
)
•Approved Pro

RDI CONTRACTORS LLC

8024 STATE ROUTE 30
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

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
343 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

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
2133 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

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

See all articles
  • Technician repairing air conditioner
    After Hours Home Improvement, LLC - Author/Reviewer
    •

    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.