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Central a/c service or repairers in Discovery Bay

Avatar for B&B's Heating and Air Conditioning, Inc.
B&B's Heating and Air Conditioning, Inc.
2244 East Weber Avenue
4.67(
3
)
Approved Pro
B&B's Heating and Air Conditioning, Inc.
2244 East Weber Avenue
4.67(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 years of experience

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!

"Ive been using bob for 20 years."

Mark G on October 2020

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!

"Ive been using bob for 20 years."

Mark G on October 2020


Avatar for Alliance Heating and Air
Alliance Heating and Air
5309 Barbados Cir
5.00(
4
)
Approved Pro
Alliance Heating and Air
5309 Barbados Cir
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 years of experience

Alliance Heating & Air 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.

"Good"

Steven P on June 2021

Alliance Heating & Air 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.

"Good"

Steven P on June 2021


Avatar for Prime Energy Heat and Air
Prime Energy Heat and Air
931 Macduff Avenue
4.97(
43
)
Approved Pro
Prime Energy Heat and Air
931 Macduff Avenue
4.97(
43
)
Approved Pro
Customers say: Terrific value
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
34 local quotes requested

We pride our company on reliability, great communication, integrity and quality work. We are experts in our heating and cooling work and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.

"Leonel was professional, kind, and attentive throughout the entire process of installing our new HVAC system. We are thankful he responded to our request for an estimate! Highly recommend!!!"

Bryan N on April 2024

We pride our company on reliability, great communication, integrity and quality work. We are experts in our heating and cooling work and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.

"Leonel was professional, kind, and attentive throughout the entire process of installing our new HVAC system. We are thankful he responded to our request for an estimate! Highly recommend!!!"

Bryan N on April 2024


Avatar for Perfect Star Heating and Air Conditioning
Perfect Star Heating and Air Conditioning
4415 Cowell Road
4.90(
234
)
Approved Pro
Perfect Star Heating and Air Conditioning
4415 Cowell Road
4.90(
234
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
348 local quotes requested

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"Great customer service!"

John _ on March 2025

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"Great customer service!"

John _ on March 2025


Avatar for Ken's Air
Ken's Air
PO Box 42
4.60(
94
)
Approved Pro
Ken's Air
PO Box 42
4.60(
94
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
21 years of experience

Ken Hardin, the owner and operator of Ken's Air, has been in the HVAC industry over 15 years and serves the Acampo and surrounding area. We are committed to giving our customers the quality, value and service they need and want. We are a service based HVAC contractor providing installations and applications in the residential and commercial fields. You will be comfortable knowing that you will always deal with same owner operator of the company and treat your home like it was our own. Call us today for your free estimate!

"Ken changed two airconditioner parts and charged me $575.00. But the problem was not fixed. AC is still blowing hot air. This guy is a crook. I don't recommend this guy named KEN."

Manuel P on July 2024

Ken Hardin, the owner and operator of Ken's Air, has been in the HVAC industry over 15 years and serves the Acampo and surrounding area. We are committed to giving our customers the quality, value and service they need and want. We are a service based HVAC contractor providing installations and applications in the residential and commercial fields. You will be comfortable knowing that you will always deal with same owner operator of the company and treat your home like it was our own. Call us today for your free estimate!

"Ken changed two airconditioner parts and charged me $575.00. But the problem was not fixed. AC is still blowing hot air. This guy is a crook. I don't recommend this guy named KEN."

Manuel P on July 2024


Avatar for Comfort Experts INC
Comfort Experts INC
PO Box 1225
4.54(
14
)
Approved Pro
Comfort Experts INC
PO Box 1225
4.54(
14
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
111 local quotes requested

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!

"Nice and on point about what i eed to fix"

Angelo C on February 2024

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!

"Nice and on point about what i eed to fix"

Angelo C on February 2024


Avatar for Smart Heating and Air Conditioning, Inc.
Smart Heating and Air Conditioning, Inc.
1717 Solano Way #7
4.83(
18
)
Approved Pro
Smart Heating and Air Conditioning, Inc.
1717 Solano Way #7
4.83(
18
)
Approved Pro
Super Service Award
Customers say: Quality work
4 years of experience
Free onsite estimate

Smart Heating and Air is proud to be a locally owned and operated business that provides residential HVAC installation, replacement and service. With years of experience and unmatched expertise, we can help with any and all of your heating and cooling needs. Since opening our doors we have built our business on providing customers with the highest quality products and service at a fair price. You can count on us to be timely, tidy and when the job is done, that you will be 100% satisfied with the work. Let us show you the Smart Heating and Air advantage, get in touch today!

"They do an outstanding detailed job on examining your equipment and explain the problems that are going on and problems that might arise and then back it up with pictures. They send all this info to you via your computor. They also do a great job cleaning up after they are finished. They are very professional!"

marilyn m on April 2024

Smart Heating and Air is proud to be a locally owned and operated business that provides residential HVAC installation, replacement and service. With years of experience and unmatched expertise, we can help with any and all of your heating and cooling needs. Since opening our doors we have built our business on providing customers with the highest quality products and service at a fair price. You can count on us to be timely, tidy and when the job is done, that you will be 100% satisfied with the work. Let us show you the Smart Heating and Air advantage, get in touch today!

"They do an outstanding detailed job on examining your equipment and explain the problems that are going on and problems that might arise and then back it up with pictures. They send all this info to you via your computor. They also do a great job cleaning up after they are finished. They are very professional!"

marilyn m on April 2024


Avatar for Livermore Mechanical, Inc.
Livermore Mechanical, Inc.
PO Box 2706
4.70(
23
)
Approved Pro
Livermore Mechanical, Inc.
PO Box 2706
4.70(
23
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

Livermore Mechanical, Inc. is a Union Shop specializing in Residential and Commercial HVAC Service and Installs. We can handle any project or problem, large or small. Over the years, we have built our reputation on communication, honesty, integrity & quality of craftsmanship. We always strive for perfection & we get the job done right the first time. Call today to schedule a consultation!

"Great response time. They were able to replace parts the very next day. Oz was the tech, he was very professional and thorough. Megan was a delight to talk to and assure our needs were met.We highly recommend Livermore Mechanical"

Diane M on January 2021

Livermore Mechanical, Inc. is a Union Shop specializing in Residential and Commercial HVAC Service and Installs. We can handle any project or problem, large or small. Over the years, we have built our reputation on communication, honesty, integrity & quality of craftsmanship. We always strive for perfection & we get the job done right the first time. Call today to schedule a consultation!

"Great response time. They were able to replace parts the very next day. Oz was the tech, he was very professional and thorough. Megan was a delight to talk to and assure our needs were met.We highly recommend Livermore Mechanical"

Diane M on January 2021


Avatar for AireServ of Pleasanton
AireServ of Pleasanton
7026 Koll Center Pkwy Suite 211
4.67(
3
)
Approved Pro
AireServ of Pleasanton
7026 Koll Center Pkwy Suite 211
4.67(
3
)
Approved Pro
33 years of experience
Free onsite estimate

AireServ of Pleasanton is a locally/owner run and operated company. We service all of East Bay Area. 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. AireServ has been around for over 20-years with over 250 locations.

AireServ of Pleasanton is a locally/owner run and operated company. We service all of East Bay Area. 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. AireServ has been around for over 20-years with over 250 locations.


Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
3333 Martin Luther King Jr Way
4.45(
682
)
Approved Pro
Albert Nahman Plumbing, Heating, and Cooling
3333 Martin Luther King Jr Way
4.45(
682
)
Approved Pro
Customers say: Super punctual
2849 local quotes requested
44 years of experience

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"He was not able to perform the service. He told me he did not have the correct parts. That I needed PGE to come back out. I had another professional come the following day and he was able to diagnose and fix both wall heaters with no issue. I was very diappointed and felt cheated."

Tracy D on April 2025

Albert Nahman Services was founded in 1981 and has been serving Berkeley, CA and it surrounding areas in all their plumbing and HVAC needs. Each of our technicians went through rigorous training so we can guarantee that you will be receiving the proper service. We are also insured and supply a warranty for our parts for five years and up to twenty years on an re-piping or sewer replacement. Call us now to make your appointment!

"He was not able to perform the service. He told me he did not have the correct parts. That I needed PGE to come back out. I had another professional come the following day and he was able to diagnose and fix both wall heaters with no issue. I was very diappointed and felt cheated."

Tracy D on April 2025

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Central a/c service or repairs FAQs

Yes, a once-a-year tune-up keeps the system efficient and helps it last longer. During the visit, a technician cleans coils, checks electrical connections, and swaps or cleans the filter. Catching small issues now stops bigger, pricier failures later, so that a quick appointment saves money and stress over the life of the unit.

Changing your AC filter every 30 days is necessary to maintain optimal performance and high indoor air quality. Regular filter replacement prevents dust buildup, ensures efficient airflow, and protects the system from stress that could lead to costly repairs. This disciplined maintenance routine not only boosts energy efficiency but also prolongs the lifespan of your unit by safeguarding its critical components.

An HVAC service plan is worth the cost, especially if you forget to schedule maintenance on your own. A service plan locks in yearly (or twice-yearly) visits, allowing a professional to identify small problems early, clean key components, and maintain energy efficiency. Many plans also include minor repairs or priority scheduling, which can pay for themselves if an unexpected issue pops up.

In a pre-season service visit, your technician gives your system a top-to-bottom check before peak season hits. Expect a filter change, thermostat test, condenser-line flush, electrical-connection check, and coil cleaning. They also tighten loose parts and make minor adjustments so the unit fires up without surprises when temperatures swing. That quick tune-up cuts the risk of mid-season breakdowns and keeps energy use in line.

The 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.
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