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Find Central a/c service or repairers in Boulder

Avatar for Comfair Heating and Cooling LLC

Comfair Heating and Cooling LLC

5.00(
18
)
Approved Pro

Comfair Heating and Cooling LLC

5.00(
18
)
Approved Pro
Super Service Award
2 years of experience
Free onsite estimate

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

" I recently had Comfair Heat and AC install a new furnace, and I couldn’t be happier with the experience. From start to finish, the team was timely, professional, and incredibly friendly. They showed up exactly when they said they would, walked me through the process, and completed the installation efficiently without cutting any corners. Their pricing was very fair compared to other quotes I received, and the quality of their work truly stands out. The new furnace runs perfectly, and the difference in comfort is noticeable already. Overall, Comfair delivered fantastic service, and I highly recommend them to anyone needing heating or AC work. I’ll definitely be using them again in the future."

Michael N on December 2025

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

" I recently had Comfair Heat and AC install a new furnace, and I couldn’t be happier with the experience. From start to finish, the team was timely, professional, and incredibly friendly. They showed up exactly when they said they would, walked me through the process, and completed the installation efficiently without cutting any corners. Their pricing was very fair compared to other quotes I received, and the quality of their work truly stands out. The new furnace runs perfectly, and the difference in comfort is noticeable already. Overall, Comfair delivered fantastic service, and I highly recommend them to anyone needing heating or AC work. I’ll definitely be using them again in the future."

Michael N on December 2025


Avatar for JL HVAC Construction

JL HVAC Construction

5.00(
2
)
Approved Pro

JL HVAC Construction

5.00(
2
)
Approved Pro
5 years of experience
Free onsite estimate

We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our client

"Top-notch every time! We’ve worked with JL for several projects and have had a great experience each time. He first installed a bathroom fan - professional and efficient - and the fan works perfectly. Later, he handled an urgent AC repair with incredible speed and responsiveness. Most recently he completed HVAC sealing to improve our system’s efficiency. Every job has been handled with care, clear communication, and consistency. He’s reliable, thorough, and easy to work with - very, very highly recommend!"

Andrea T on November 2025

We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our client

"Top-notch every time! We’ve worked with JL for several projects and have had a great experience each time. He first installed a bathroom fan - professional and efficient - and the fan works perfectly. Later, he handled an urgent AC repair with incredible speed and responsiveness. Most recently he completed HVAC sealing to improve our system’s efficiency. Every job has been handled with care, clear communication, and consistency. He’s reliable, thorough, and easy to work with - very, very highly recommend!"

Andrea T on November 2025


Avatar for L&M HVAC & Mechanical, LLC

L&M HVAC & Mechanical, LLC

5.00(
1
)
Approved Pro

L&M HVAC & Mechanical, LLC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 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. Call us today!

"Lee & Mike were very knowledgeable, professional and courteous. I highly recommend them!"

Peggy J on October 2021

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. Call us today!

"Lee & Mike were very knowledgeable, professional and courteous. I highly recommend them!"

Peggy J on October 2021


A-Z Construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

A-Z Construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
20 years of experience
Free onsite estimate

A-Z Construction is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. You will find us to be competitively priced while still paying close attention to the details of each and every project we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. Give us a call today to get your project started.

A-Z Construction is a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. You will find us to be competitively priced while still paying close attention to the details of each and every project we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. Give us a call today to get your project started.


Avatar for New Era HVAC

New Era HVAC

5.00(
26
)
Approved Pro

New Era HVAC

5.00(
26
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

Our mission at New Era HVAC is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! New Era HVAC stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"I called to have inducer motor replaced and could not be happier with result. Worked directly with owner who was informative, upfront, honest and polite. I have no reason to give anything other than 5 stars. Pricing was fair and work was done exactly as promised. Would recommend to family and friends without hesitation."

REBECCA W on February 2024

Our mission at New Era HVAC is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! New Era HVAC stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"I called to have inducer motor replaced and could not be happier with result. Worked directly with owner who was informative, upfront, honest and polite. I have no reason to give anything other than 5 stars. Pricing was fair and work was done exactly as promised. Would recommend to family and friends without hesitation."

REBECCA W on February 2024


Avatar for Now Heating & Air

Now Heating & Air

4.50(
19
)
Approved Pro

Now Heating & Air

4.50(
19
)
Approved Pro
Customers say: Quick response
36 years of experience

Welcome to Now Heating & Air Since 1989, we have provided expert service for residential and commercial HVAC installation, repair, and maintenance in Denver, Boulder, and the surrounding areas. Whether you need new system installation or system retrofit, our professional technicians will assess your needs and provide a system for your home or business that will exceed your expectations. Our technicians have extensive training and experience with the heating and air conditioning units we install, as well as all other types of residential systems to ensure efficient air conditioning and heating repair for your home. We provide repair, replacement, and preventative maintenance for air conditioners, furnace repair, furnace replacement, heat pumps, air duct cleaning, humidifiers, and more.

"BEN was fantastic. Very knowledgeable and explained every step of the process in complete detail. Within 5 mins of a seeing the unit he knew exactly what the problem was and how to fix it. Ben listened to our concerns and gave us better options for optimal performance of our system and also recommendations for this problem . Eliminating reoccurrence and the appropriate maintenance schedule recommended for our unit. With his wealth of knowledge and approach NOW is very lucky to have BEN on their team."

Louella N on August 2021

Welcome to Now Heating & Air Since 1989, we have provided expert service for residential and commercial HVAC installation, repair, and maintenance in Denver, Boulder, and the surrounding areas. Whether you need new system installation or system retrofit, our professional technicians will assess your needs and provide a system for your home or business that will exceed your expectations. Our technicians have extensive training and experience with the heating and air conditioning units we install, as well as all other types of residential systems to ensure efficient air conditioning and heating repair for your home. We provide repair, replacement, and preventative maintenance for air conditioners, furnace repair, furnace replacement, heat pumps, air duct cleaning, humidifiers, and more.

"BEN was fantastic. Very knowledgeable and explained every step of the process in complete detail. Within 5 mins of a seeing the unit he knew exactly what the problem was and how to fix it. Ben listened to our concerns and gave us better options for optimal performance of our system and also recommendations for this problem . Eliminating reoccurrence and the appropriate maintenance schedule recommended for our unit. With his wealth of knowledge and approach NOW is very lucky to have BEN on their team."

Louella N on August 2021


Avatar for Lous Heating and Cooling LLC

Lous Heating and Cooling LLC

4.98(
65
)
Approved Pro

Lous Heating and Cooling LLC

4.98(
65
)
Approved Pro
Super Service Award
Customers say: True professional
103 local quotes requested
5 years of experience

is 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.

"On time, very friendly, quick work. "

Seth G on October 2025

is 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.

"On time, very friendly, quick work. "

Seth G on October 2025


Avatar for Evergreen Heating & Cooling

Evergreen Heating & Cooling

5.00(
4
)
Approved Pro

Evergreen Heating & Cooling

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

Here at Evergreen Heating & Cooling our goal is to provide complete customer satisfaction via open and honest communication, upfront pricing, thorough explanations & tangible options. We have senior technicians with over 10 years experience in the industry who have serviced and installed nearly every major system brand. We hold our work to a higher standard! Give us a call today!

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Michelle M on July 2018

Here at Evergreen Heating & Cooling our goal is to provide complete customer satisfaction via open and honest communication, upfront pricing, thorough explanations & tangible options. We have senior technicians with over 10 years experience in the industry who have serviced and installed nearly every major system brand. We hold our work to a higher standard! Give us a call today!

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Michelle M on July 2018


Avatar for Mike's Mechanical Services, LLC

Mike's Mechanical Services, LLC

4.58(
6
)
Approved Pro

Mike's Mechanical Services, LLC

4.58(
6
)
Approved Pro
Customers say: Quick response
11 years of experience
Free onsite estimate

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.

"The tech this company sent to my home was respectful. Above all else very knowledgeable. Would recommend again and again. Thank you for the great service."

Mark L on October 2023

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.

"The tech this company sent to my home was respectful. Above all else very knowledgeable. Would recommend again and again. Thank you for the great service."

Mark L on October 2023


Avatar for Coal Creek Heat, LLC

Coal Creek Heat, LLC

5.00(
4
)
Approved Pro

Coal Creek Heat, LLC

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

We provide our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems, as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Devin was so professional and knowledgeable. Great company and service!! Highly recommend."

James M on May 2020

We provide our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems, as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Devin was so professional and knowledgeable. Great company and service!! Highly recommend."

James M on May 2020

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FAQs for central a/c service or repair projects in Boulder, CO

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 Boulder, CO 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