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Find Central a/c service or repairers in Alta Loma

Avatar for RS Air Conditioning & Heating

RS Air Conditioning & Heating

4.97(
21
)
Approved Pro

RS Air Conditioning & Heating

4.97(
21
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
36 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers' 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.

"Ray responded in a timely manner and was very thorough in diagnosing and explaining the problem. I would highly recommend him and plan to use him for any future needs."

tome z on October 2022

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers' 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.

"Ray responded in a timely manner and was very thorough in diagnosing and explaining the problem. I would highly recommend him and plan to use him for any future needs."

tome z on October 2022


Avatar for Net Blue HVAC

Net Blue HVAC

5.00(
2
)
Approved Pro

Net Blue HVAC

5.00(
2
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

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! Book with us online or feel free to give us a call today!

"This company never failed to impress me. I was truly blown away by the service I received from them as they addressed my HVAC air conditioning repair needs yesterday. The technician was intelligent, diligent, and expert about the service. I will highly recommend this company to everyone."

Jack L on April 2022

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! Book with us online or feel free to give us a call today!

"This company never failed to impress me. I was truly blown away by the service I received from them as they addressed my HVAC air conditioning repair needs yesterday. The technician was intelligent, diligent, and expert about the service. I will highly recommend this company to everyone."

Jack L on April 2022


Avatar for 57 HEATING AND AIR CONDITIONING

57 HEATING AND AIR CONDITIONING

5.00(
1
)
Approved Pro

57 HEATING AND AIR CONDITIONING

5.00(
1
)
Approved Pro
14 years of experience
Free onsite estimate

proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"Daniel from 57 heating and air did an amazing job installing my mini splits. The craftsmanship is high quality, they left my home cleaner than how it was and went above and beyond. I highly recommend them. "

Leonor L on February 2025

proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"Daniel from 57 heating and air did an amazing job installing my mini splits. The craftsmanship is high quality, they left my home cleaner than how it was and went above and beyond. I highly recommend them. "

Leonor L on February 2025


Avatar for Climate Specialists

Climate Specialists

4.92(
12
)
Approved Pro

Climate Specialists

4.92(
12
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Welcome to Climate Specialists, your trusted HVAC experts in Diamond Bar. With over 25 years of experience, we have been servicing both residential and commercial properties with top-notch installations and repairs. Our professionalism and commitment to getting the job done right the first time sets us apart from our competitors. At Climate Specialists, we understand the importance of having a comfortable and functional living or working space. As a veteran and family-owned business, we take pride in providing exceptional service to our community. Our dedication to quality work and competitive pricing has made us a trusted name in the HVAC industry. When you choose Climate Specialists, you can trust that your HVAC needs will be taken care of. Contact us today for all your HVAC needs and experience the difference of working with a company that puts your satisfaction first. Let us keep you cool in the summer and warm in the winter with our top-notch services.

"Really wonderful experience. Super fast communication and able to come out quickly to fix my furnace. They were very professional while at my home and honest. Trouble shot the issues until they found what was wrong. I would definitely hire them again and recommend to others."

Dorothy R on February 2024

Welcome to Climate Specialists, your trusted HVAC experts in Diamond Bar. With over 25 years of experience, we have been servicing both residential and commercial properties with top-notch installations and repairs. Our professionalism and commitment to getting the job done right the first time sets us apart from our competitors. At Climate Specialists, we understand the importance of having a comfortable and functional living or working space. As a veteran and family-owned business, we take pride in providing exceptional service to our community. Our dedication to quality work and competitive pricing has made us a trusted name in the HVAC industry. When you choose Climate Specialists, you can trust that your HVAC needs will be taken care of. Contact us today for all your HVAC needs and experience the difference of working with a company that puts your satisfaction first. Let us keep you cool in the summer and warm in the winter with our top-notch services.

"Really wonderful experience. Super fast communication and able to come out quickly to fix my furnace. They were very professional while at my home and honest. Trouble shot the issues until they found what was wrong. I would definitely hire them again and recommend to others."

Dorothy R on February 2024


Valley Comfort Champions, Inc.

5.00(
11
)
Approved Pro

Valley Comfort Champions, Inc.

5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 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 the start to the 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.

"Home Runners Heating and Air did an outstanding job when servicing our HVAC system. Their technicians were not only highly skilled and efficient but also incredibly friendly and approachable. They took the time to explain everything in detail and made sure we were comfortable with the work being done. The entire experience was smooth and stress-free. Highly recommended for anyone in need of heating and air services!"

L L on June 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 the start to the 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.

"Home Runners Heating and Air did an outstanding job when servicing our HVAC system. Their technicians were not only highly skilled and efficient but also incredibly friendly and approachable. They took the time to explain everything in detail and made sure we were comfortable with the work being done. The entire experience was smooth and stress-free. Highly recommended for anyone in need of heating and air services!"

L L on June 2024


Avatar for Four Seasons Heating and Air LLC

Four Seasons Heating and Air LLC

4.00(
2
)
Approved Pro

Four Seasons Heating and Air LLC

4.00(
2
)
Approved Pro
3 years of experience
Free onsite estimate

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.

"There were wonderful."

Gloria C on November 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.

"There were wonderful."

Gloria C on November 2025


Avatar for Trinity Heating and AC

Trinity Heating and AC

5.00(
35
)
Approved Pro

Trinity Heating and AC

5.00(
35
)
Approved Pro
Super Service Award
Customers say: Quick response
61 local quotes requested
5 years of experience

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Professional. Knowledgeable. Courteous. On time! And spent precious time going through function of my new device. Outstanding! And at a fair price. "

Douglas P on January 2026

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Professional. Knowledgeable. Courteous. On time! And spent precious time going through function of my new device. Outstanding! And at a fair price. "

Douglas P on January 2026


Avatar for Trinity Heating and AC

Trinity Heating and AC

5.00(
9
)
Approved Pro

Trinity Heating and AC

5.00(
9
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Chris was able to fix our ac unit, where my old account guy said we NEEDED to replace it!!! Plus Chris is very personable and I believe he is very honest and forthcoming as he could have sold us a new system, but found us a much cheaper option!!"

Sonja H on June 2025

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Chris was able to fix our ac unit, where my old account guy said we NEEDED to replace it!!! Plus Chris is very personable and I believe he is very honest and forthcoming as he could have sold us a new system, but found us a much cheaper option!!"

Sonja H on June 2025


Avatar for Aace's Heating Air Conditioning & Swamp Coolers

Aace's Heating Air Conditioning & Swamp Coolers

4.86(
65
)
Approved Pro

Aace's Heating Air Conditioning & Swamp Coolers

4.86(
65
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
74 local quotes requested

Aace's Heating Air Conditioning & Swamp Coolers is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Did shoddy work and damaged the drywall."

Randall A on December 2025

Aace's Heating Air Conditioning & Swamp Coolers is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Did shoddy work and damaged the drywall."

Randall A on December 2025


Avatar for THE AC DOCTOR HEATING & AIR CONDITIONING

THE AC DOCTOR HEATING & AIR CONDITIONING

5.00(
55
)
Approved Pro

THE AC DOCTOR HEATING & AIR CONDITIONING

5.00(
55
)
Approved Pro
Super Service Award
Customers say: Quick response
3 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. Over 30 years of experience in HVAC

"He did a really good job."

Julie T on January 2026

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. Over 30 years of experience in HVAC

"He did a really good job."

Julie T on January 2026

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FAQs for central a/c service or repair projects in Alta Loma, CA

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 Alta Loma, CA 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