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TRUSTED BY CASTRO VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon320
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Castro Valley

Avatar for AirGonomics Heating & Cooling

AirGonomics Heating & Cooling

5.00(
5
)
Approved Pro

AirGonomics Heating & Cooling

5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 local quotes requested

AirGonomics Heating & Cooling provides Honest, Reliable HVAC services for your Home or Business. Whether you require equipment maintenance, replacement or an emergency repair, we are available to serve all of HVAC your needs. Your satisfaction matters. AirGonomics strives for 100% customer satisfaction. Give AirGonomics a call today. We will do our best to exceed your expectations.

"All work was done on schedule and actually under $ budget, which was surprising and nice to see, would definitely use this company again and highly recommend them"

Dave H on June 2024

AirGonomics Heating & Cooling provides Honest, Reliable HVAC services for your Home or Business. Whether you require equipment maintenance, replacement or an emergency repair, we are available to serve all of HVAC your needs. Your satisfaction matters. AirGonomics strives for 100% customer satisfaction. Give AirGonomics a call today. We will do our best to exceed your expectations.

"All work was done on schedule and actually under $ budget, which was surprising and nice to see, would definitely use this company again and highly recommend them"

Dave H on June 2024


Avatar for RC&G Handyman Services

RC&G Handyman Services

4.94(
213
)
Approved Pro

RC&G Handyman Services

4.94(
213
)
Approved Pro
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
258 local quotes requested

RC&G is an acronym - it stands for "Richard, Charlene, and the Girls", because it's a great reminder of what I'm working for. I'm Richard and my wife and daughters are the most important thing in the world to me. Also hugely important to me is doing great work in my business as a handyman. I've always been mechanically inclined and good at fixing whatever's broken. With decades of experience, now I'm truly a master handyman. Whatever you need, I'm here to get it done. I respond quickly to contacts and give an accurate estimate. Then I arrive as scheduled, do the job right, and leave your house as clean as I found it. I'm looking forward to meeting you!

"Project went fine. Richard was very professional and accommodating!"

Martin H on October 2024

RC&G is an acronym - it stands for "Richard, Charlene, and the Girls", because it's a great reminder of what I'm working for. I'm Richard and my wife and daughters are the most important thing in the world to me. Also hugely important to me is doing great work in my business as a handyman. I've always been mechanically inclined and good at fixing whatever's broken. With decades of experience, now I'm truly a master handyman. Whatever you need, I'm here to get it done. I respond quickly to contacts and give an accurate estimate. Then I arrive as scheduled, do the job right, and leave your house as clean as I found it. I'm looking forward to meeting you!

"Project went fine. Richard was very professional and accommodating!"

Martin H on October 2024


Vivianos Painting

5.00(
4
)
Approved Pro

Vivianos Painting

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
161 local quotes requested

Vivianos Painting provides painting services in Oakland, CA, and the area. You can call for different painting, plumbing, and other services. I will be glad to help you! Residential Handyman Service, Painting Service, Plumbing Service, Small Siding Repair, Exterior Painting Piedmont CA; Albany CA; Orinda CA; Pinole CA; Moraga Town CA; Interior Painter, Painting Specialist, Immaculate Painting, Affordable Painting Contractors, Quality Painting Services http://vivianospainting.com/

"It was excellent. They were responsive and quick. I liked the quality overall."

Darryl G on March 2023

Vivianos Painting provides painting services in Oakland, CA, and the area. You can call for different painting, plumbing, and other services. I will be glad to help you! Residential Handyman Service, Painting Service, Plumbing Service, Small Siding Repair, Exterior Painting Piedmont CA; Albany CA; Orinda CA; Pinole CA; Moraga Town CA; Interior Painter, Painting Specialist, Immaculate Painting, Affordable Painting Contractors, Quality Painting Services http://vivianospainting.com/

"It was excellent. They were responsive and quick. I liked the quality overall."

Darryl G on March 2023


Avatar for Ease HVAC

Ease HVAC

4.83(
23
)
Approved Pro

Ease HVAC

4.83(
23
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
16 years of experience

We are a small business with low overhead so we can pass the savings on to our homeowners. We work diligently to complete all service calls by offering evening hours throughout the week to fit your scheduling needs. With our many years of experience, you can feel comfortable that your heating and air needs are in good hands. Call us today to get your estimate on your next project!

"Amr was most professional & knowledgeable. He should be rewarded financially & considered to become a CEO for your company! He'd be excellent because he has started from the bottom. He has earned his way to the top! Millicent Mc Cormack 81 David Drive Moraga, CA 94556"

Millicent M on January 2021

We are a small business with low overhead so we can pass the savings on to our homeowners. We work diligently to complete all service calls by offering evening hours throughout the week to fit your scheduling needs. With our many years of experience, you can feel comfortable that your heating and air needs are in good hands. Call us today to get your estimate on your next project!

"Amr was most professional & knowledgeable. He should be rewarded financially & considered to become a CEO for your company! He'd be excellent because he has started from the bottom. He has earned his way to the top! Millicent Mc Cormack 81 David Drive Moraga, CA 94556"

Millicent M on January 2021


Avatar for H K & S Plumbing Co.

H K & S Plumbing Co.

4.67(
74
)
Approved Pro

H K & S Plumbing Co.

4.67(
74
)
Approved Pro
Super Service Award
Customers say: Quick response
77 local quotes requested
25 years of experience

Thank you for choosing H K & S Plumbing Co.! We are committed to providing quality workmanship and superior customer service to all of our existing, and future, clients. We strive to maintain our reputation as a high quality, service oriented company. No job is too big or too small. Call today!

"Very disappointed. This guy is a crook. I paid way too much for what he did and he did not do the work properly. He replaced pipes that were leaking from our upstairs shower. I had another leak a few weeks after he did the repair. 2nd leak was not related to the pipes he repaired, but the 2nd plumber who came out for the 2nd leak had to cut into the ceiling where HK&S Plumbing replaced the pipes and told me that the work was not done properly. He did not glue the pipes properly and he used a rubber coupling that is not allowed in California. The other plumbing company said they would fix his work for 65% less than what I paid HK&S. When I asked HK&S about all this, he gave excuses about the small space and how much more work it would have been to do the work the right way. When I asked him again for a refund, he is now saying his work will last "forever" (really?) and has nothing to say about what he did wrong. He is not giving me a refund. Not sure I will use anyone thru Angi again."

Jamie Y on December 2025

Thank you for choosing H K & S Plumbing Co.! We are committed to providing quality workmanship and superior customer service to all of our existing, and future, clients. We strive to maintain our reputation as a high quality, service oriented company. No job is too big or too small. Call today!

"Very disappointed. This guy is a crook. I paid way too much for what he did and he did not do the work properly. He replaced pipes that were leaking from our upstairs shower. I had another leak a few weeks after he did the repair. 2nd leak was not related to the pipes he repaired, but the 2nd plumber who came out for the 2nd leak had to cut into the ceiling where HK&S Plumbing replaced the pipes and told me that the work was not done properly. He did not glue the pipes properly and he used a rubber coupling that is not allowed in California. The other plumbing company said they would fix his work for 65% less than what I paid HK&S. When I asked HK&S about all this, he gave excuses about the small space and how much more work it would have been to do the work the right way. When I asked him again for a refund, he is now saying his work will last "forever" (really?) and has nothing to say about what he did wrong. He is not giving me a refund. Not sure I will use anyone thru Angi again."

Jamie Y on December 2025


Avatar for Elite Heating and Air LLC

Elite Heating and Air LLC

5.00(
10
)
Approved Pro

Elite Heating and Air LLC

5.00(
10
)
Approved Pro
70 local quotes requested
9 years of experience

Elite Heating and Air LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have 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. Here at Elite we stand behind quality workmanship,Please feel free to contact us today!

"Jorge, Angel, Ishmael, and George were fantastic. Jorge was honest and straight in the initial conversations. He gave me multiple options for systems and their functionality. When I made my selection I was given a very fair price for the work that was to be done. He was very helpful in acquiring good financing that bested my Credit Union and Bank. The work was done quickly with great attention to the fine details. I now have an efficient and functional HVAC unit. If you need repairs or a replacement HVAC system you could not do better than selecting Elite Heating and Air for your job. I'm telling all my friends that if they need any work done - "I've got a guy"..."

Gary S on October 2025

Elite Heating and Air LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have 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. Here at Elite we stand behind quality workmanship,Please feel free to contact us today!

"Jorge, Angel, Ishmael, and George were fantastic. Jorge was honest and straight in the initial conversations. He gave me multiple options for systems and their functionality. When I made my selection I was given a very fair price for the work that was to be done. He was very helpful in acquiring good financing that bested my Credit Union and Bank. The work was done quickly with great attention to the fine details. I now have an efficient and functional HVAC unit. If you need repairs or a replacement HVAC system you could not do better than selecting Elite Heating and Air for your job. I'm telling all my friends that if they need any work done - "I've got a guy"..."

Gary S on October 2025


Avatar for Bell Brothers Plumbing Heating & Air

Bell Brothers Plumbing Heating & Air

4.79(
357
)
Approved Pro

Bell Brothers Plumbing Heating & Air

4.79(
357
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
57 local quotes requested

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"They were very good. The best."

Nabila S on June 2022

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"They were very good. The best."

Nabila S on June 2022


Avatar for Alex's Handyman Services

Alex's Handyman Services

5.00(
6
)
Approved Pro

Alex's Handyman Services

5.00(
6
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
120 local quotes requested

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Very good, the job was completed very quickly"

Jeremy B on April 2025

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Very good, the job was completed very quickly"

Jeremy B on April 2025


Avatar for Air Sharks

Air Sharks

5.00(
6
)
Approved Pro

Air Sharks

5.00(
6
)
Approved Pro
Super Service Award
Customers say: Quick response
137 local quotes requested
3 years of experience

Air Sharks LLC provides a wide range of HVAC services for residential clients throughout the South Bay. In addition to installing, repairing, and maintaining heating and air conditioning systems made by industry leaders like Daikin and Lennox, the company offers various services that are designed to improve indoor air quality, including ductwork inspection and cleaning. Owner Khaled Alsaka credits much of Air Sharks’ success to its passion for transforming the HVAC process with insightful education, collaborative solutions and top-tier products. “As a pioneering force in the industry, we leverage our extensive expertise to provide our customers with seamless guidance,” he says. “Our dedication to excellence motivates us to continuously exceed expectations, ensuring every interaction reflects our unwavering commitment to delivering five-star service.” Air Sharks offers personalized consultations so it can provide each job with tailored heating and cooling solutions, which Mr. Alsaka says is important for ensuring positive results. “We take great pride in our craftsmanship and attention to detail. Every phase of our process allows us to showcase our expertise, resulting in highly satisfied customers who are eager to share their experience with others.

"Very professional in both sales of the right product AND flawless and timely installation. You can stop your searching for vendors...stop sns start with Air Sharks."

Michael S on March 2025

Air Sharks LLC provides a wide range of HVAC services for residential clients throughout the South Bay. In addition to installing, repairing, and maintaining heating and air conditioning systems made by industry leaders like Daikin and Lennox, the company offers various services that are designed to improve indoor air quality, including ductwork inspection and cleaning. Owner Khaled Alsaka credits much of Air Sharks’ success to its passion for transforming the HVAC process with insightful education, collaborative solutions and top-tier products. “As a pioneering force in the industry, we leverage our extensive expertise to provide our customers with seamless guidance,” he says. “Our dedication to excellence motivates us to continuously exceed expectations, ensuring every interaction reflects our unwavering commitment to delivering five-star service.” Air Sharks offers personalized consultations so it can provide each job with tailored heating and cooling solutions, which Mr. Alsaka says is important for ensuring positive results. “We take great pride in our craftsmanship and attention to detail. Every phase of our process allows us to showcase our expertise, resulting in highly satisfied customers who are eager to share their experience with others.

"Very professional in both sales of the right product AND flawless and timely installation. You can stop your searching for vendors...stop sns start with Air Sharks."

Michael S on March 2025


Avatar for Real Handy Handyman

Real Handy Handyman

5.00(
34
)
Approved Pro

Real Handy Handyman

5.00(
34
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
132 local quotes requested

We have a 10 year experience in Handyman work, serving all around the bay area. We will always put in all our effort to give our costumers 100% satisfaction. We like to build good relationships with our customers. We do free estimates with no obligation to proceed.

"Kevin is not only professional, he is also honest in his work. He changed the mesh screens on all of my windows. He refused to charge me for one that he fixed in a few minutes. Honesty and professionalism is an essential trait to have in his line of work. This happy customer recommends him for all of your handy-man needs and will definitely be using his services again!"

Maria C on December 2025

We have a 10 year experience in Handyman work, serving all around the bay area. We will always put in all our effort to give our costumers 100% satisfaction. We like to build good relationships with our customers. We do free estimates with no obligation to proceed.

"Kevin is not only professional, he is also honest in his work. He changed the mesh screens on all of my windows. He refused to charge me for one that he fixed in a few minutes. Honesty and professionalism is an essential trait to have in his line of work. This happy customer recommends him for all of your handy-man needs and will definitely be using his services again!"

Maria C on December 2025

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Heating and Air Conditioning questions, answered by experts

Some of the signs of HVAC issues include rising energy bills, rooms not cooling or heating properly, loud noises when in operation, and signs of condensation. To illustrate, if you’re wondering how to stop condensation on air vents, you’ll need to have your HVAC inspected. 

The decision to put your AC unit on the roof or ground depends on the climate in your area, the roof shape, accessibility, and budget. If you live in a warm climate or don’t have existing ductwork, it’s likely best to stick to a traditional AC unit that sits on the ground. However, if you lack yard space, live in a mild climate, and have easy access to the roof, your home may benefit from a rooftop AC unit. 

Most AC repair technicians will take between two and six hours to carry out repairs, depending on the work needed and the accessibility of the unit. For example, recharging refrigerant lines should take one to two hours to service, while replacing a compressor, blower fan, or other major components can take five to eight hours. You can ask your AC repair technician how long they expect the job to take, but just in case, you should plan on being home and available for most of the day.

It’s never a good idea to run your AC without a filter, even just for a night. The filter defends your HVAC system from the dust, dirt, debris, and other grime in your home. Without a filter, those contaminants are more likely to get inside your system and potentially damage it. 

This is a bit of a trick question. Even though the seasons arrive at the same time every year, the weather doesn’t always behave according to the calendar. So, while it’s fair to say that you can expect to turn on your AC starting in late May or early June, it all depends on the outside temperature and how cool you like to keep your home.

The Castro Valley, CA homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.