Get matched with top heating and air conditioning pros in Union City, CA
There are 33 highly-rated local heating and air conditioning pros.
TRUSTED BY UNION CITY, CA HOMEOWNERS
4.6 
275 Verified Reviews for Heating And Air Conditioning Service pros in Union City, CA
*The Angi rating for Heating And Air Conditioning Service companies in Union City, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Union City, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on July 04, 2025
Heating and air conditioning pros in Union City
We offer a full range of HVAC commercial and residential services, as well as custom sheet metal work. Our services include new installations, upgrades, repair and maintenance of furnace, heating and air conditioning equipment. We embrace energy saving technologies that lead to significant reduction of long term costs. As a full service HVAC company with 20+ years of experience, we are equipped to handle the most complex jobs. Our knowledgeable techs have decades of combined experience and a reputation of always going above and beyond to exceed our customer expectations. Your satisfaction is our goal.
We offer a full range of HVAC commercial and residential services, as well as custom sheet metal work. Our services include new installations, upgrades, repair and maintenance of furnace, heating and air conditioning equipment. We embrace energy saving technologies that lead to significant reduction of long term costs. As a full service HVAC company with 20+ years of experience, we are equipped to handle the most complex jobs. Our knowledgeable techs have decades of combined experience and a reputation of always going above and beyond to exceed our customer expectations. Your satisfaction is our goal.
Over 22 years experience in the plumbing industry servicing the peninsula. Jess Plumbing, established in 2019 by Jesus Coronel, provides excellent customer service and quality work Specializes in: Residential,Commercial & Underground
"It went very well. Jess is fast, efficient, and friendly. And he is reasonably priced. I would recommend Jess Plumbing."
John R on March 2025
Over 22 years experience in the plumbing industry servicing the peninsula. Jess Plumbing, established in 2019 by Jesus Coronel, provides excellent customer service and quality work Specializes in: Residential,Commercial & Underground
"It went very well. Jess is fast, efficient, and friendly. And he is reasonably priced. I would recommend Jess Plumbing."
John R on March 2025
We have over 24 years of experience and have the honor of being awarded and recognized as the number1 Plumber in the United States, by Plumbers Success International, for five years in a row. Were dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential and commercial services. We take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee our clients satisfaction.
"very well done!"
Mark B on March 2022
We have over 24 years of experience and have the honor of being awarded and recognized as the number1 Plumber in the United States, by Plumbers Success International, for five years in a row. Were dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential and commercial services. We take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee our clients satisfaction.
"very well done!"
Mark B on March 2022
Title 24 HERS Testing for Residential Projects involving Heating & Cooling System changes or additions. New Construction HERS Testing. Pre-exisiting conditions documents. Duct Leakage Testing is the most familiar test involved in HERS Testing.
Title 24 HERS Testing for Residential Projects involving Heating & Cooling System changes or additions. New Construction HERS Testing. Pre-exisiting conditions documents. Duct Leakage Testing is the most familiar test involved in HERS Testing.
We are providers of construction services in the San Francisco area. Our mission is to maintain the highest quality and professionalism from start to finish. We are confident in our results because all our jobs are custom for the needs of each home. We strive for the highest degree of quality products and workmanship. During the years in business, Eds Home Improvement has satisfied many customers. It is our reputation of quality work, professionalism, and customer service our customers continue to rely on us for their needs. To understand the expectations of our customers, we take great care to work and communicate with every customer professionally. We base our reputation on service, safety, and quality. Call us today and find out how we can meet all your construction needs!
"Not well, Eddie does not do the work but has young kids who do not speak English do the work. We can not communicate with them because Eddie leaves the premises for periods of time. We could have given him more jobs in other locations but do not like the quality of work. We will not be hiring him again. Thank good it was not a larger project."
Carmel T on June 2023
We are providers of construction services in the San Francisco area. Our mission is to maintain the highest quality and professionalism from start to finish. We are confident in our results because all our jobs are custom for the needs of each home. We strive for the highest degree of quality products and workmanship. During the years in business, Eds Home Improvement has satisfied many customers. It is our reputation of quality work, professionalism, and customer service our customers continue to rely on us for their needs. To understand the expectations of our customers, we take great care to work and communicate with every customer professionally. We base our reputation on service, safety, and quality. Call us today and find out how we can meet all your construction needs!
"Not well, Eddie does not do the work but has young kids who do not speak English do the work. We can not communicate with them because Eddie leaves the premises for periods of time. We could have given him more jobs in other locations but do not like the quality of work. We will not be hiring him again. Thank good it was not a larger project."
Carmel T on June 2023
Eagle Shield specializes in prioritizing energy upgrades so that homeowners get the biggest bang for their buck. In order to keep heat out of your home’s Attics, Garages, Crawl Spaces, Ducts, Out Buildings and more during the summer season, but keep it inside during winter months, you need quality insulation. Here at Eagle Shield we have three of the very best options available; Reflective or Radiant Barrier insulation, Blown-In, and Laid or Rolled insulation, otherwise known as “Batt and Roll” or “Blanket” insulation. And in each of those three options, we carry the very best quality products. So, why wait? Start saving money and living more comfortably now! Let our Northern California energy solutions experts show you how to optimize your energy usage all year long. Contact us today to get started!
"They did a good job and he's a great guy."
Chauncey W on July 2022
Eagle Shield specializes in prioritizing energy upgrades so that homeowners get the biggest bang for their buck. In order to keep heat out of your home’s Attics, Garages, Crawl Spaces, Ducts, Out Buildings and more during the summer season, but keep it inside during winter months, you need quality insulation. Here at Eagle Shield we have three of the very best options available; Reflective or Radiant Barrier insulation, Blown-In, and Laid or Rolled insulation, otherwise known as “Batt and Roll” or “Blanket” insulation. And in each of those three options, we carry the very best quality products. So, why wait? Start saving money and living more comfortably now! Let our Northern California energy solutions experts show you how to optimize your energy usage all year long. Contact us today to get started!
"They did a good job and he's a great guy."
Chauncey W on July 2022
We are a locally owned and operated company that can take care of all of your construction needs. Whether you're looking to improve your home or a commercial property, client satisfaction is our number one priority. We stand by our work and go out of our way to continually help our clients improve their properties. Click or give us a call at (925) 667- 6368 today to schedule your consultation.
"Perfect! What he told me to do, he did it. They didn't have to come out and I had no fee and he didn't charge me for his services which I thought it to be a miracle. But I found out the other services that have company supplies and I'm looking to dealing with them again."
Dorothy B on October 2023
We are a locally owned and operated company that can take care of all of your construction needs. Whether you're looking to improve your home or a commercial property, client satisfaction is our number one priority. We stand by our work and go out of our way to continually help our clients improve their properties. Click or give us a call at (925) 667- 6368 today to schedule your consultation.
"Perfect! What he told me to do, he did it. They didn't have to come out and I had no fee and he didn't charge me for his services which I thought it to be a miracle. But I found out the other services that have company supplies and I'm looking to dealing with them again."
Dorothy B on October 2023
We are a family owned and operated heating and air conditioning company who excels in giving customers fast results with great customer service. We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.
"the service and the job was excellent, even the price was higher than the other competitors i decided to go with them because of the high level of communication and professionalism, they are a good investment that will last for the next 10-12 years."
Jonathan S on October 2022
We are a family owned and operated heating and air conditioning company who excels in giving customers fast results with great customer service. We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.
"the service and the job was excellent, even the price was higher than the other competitors i decided to go with them because of the high level of communication and professionalism, they are a good investment that will last for the next 10-12 years."
Jonathan S on October 2022
Giant HVAC is the Bay Area's premier Heating and AC company. Owner operated by a family man, we stand tall to ensure you and your family stay comfortable. With more that 18 yrs of experience in the HVAC industry and as an HVAC energy inspector, we are really proud to provide quality services and installation. Our specialties include: -Free Estimates -Heating and AC Installation -Service and Repair -Duct Leakage Experts
"Very pleased"
Richard R on June 2024
Giant HVAC is the Bay Area's premier Heating and AC company. Owner operated by a family man, we stand tall to ensure you and your family stay comfortable. With more that 18 yrs of experience in the HVAC industry and as an HVAC energy inspector, we are really proud to provide quality services and installation. Our specialties include: -Free Estimates -Heating and AC Installation -Service and Repair -Duct Leakage Experts
"Very pleased"
Richard R on June 2024
We are a small, local company and our main goal is to make sure our customers are happy. We cannot send a quote, but we can come out to your property for a free estimate to look at the job and what work is needed and then give you a quote based on exactly what you need and want to be done. Estimate is completely free! Price is given at the end of the estimate and we go from there. We have a huge portfolio of pictures and references and can take you to many previous jobs that have been completed. We am currently doing quite a few projects if you would like to see our process. We can take you to the job sites and show you. We also have many completed ones if you would like to see the finished product. We have architects and engineers on our team that are amazing and we take care of everything from pulling permits and anything else required by the city. Looking forward to hearing from you soon!
"job went well but behind schedule as there were unforeseen issues that had to be updated/repaired. in addition to the delays crews were not on site daily as they were also working on other jobs at the same time. staff was very pleasant and courteous yet there were a few who spoke very little English. Overall i would most likely hire them for further jobs."
Mary O on July 2024
We are a small, local company and our main goal is to make sure our customers are happy. We cannot send a quote, but we can come out to your property for a free estimate to look at the job and what work is needed and then give you a quote based on exactly what you need and want to be done. Estimate is completely free! Price is given at the end of the estimate and we go from there. We have a huge portfolio of pictures and references and can take you to many previous jobs that have been completed. We am currently doing quite a few projects if you would like to see our process. We can take you to the job sites and show you. We also have many completed ones if you would like to see the finished product. We have architects and engineers on our team that are amazing and we take care of everything from pulling permits and anything else required by the city. Looking forward to hearing from you soon!
"job went well but behind schedule as there were unforeseen issues that had to be updated/repaired. in addition to the delays crews were not on site daily as they were also working on other jobs at the same time. staff was very pleasant and courteous yet there were a few who spoke very little English. Overall i would most likely hire them for further jobs."
Mary O on July 2024
FAQs for heating and air conditioning service projects in Union City, CA
Knowing how long your existing HVAC units can last is essential to determine if you need a repair or replacement. Typically, most modern air conditioning units can last between 15 to 20 years, and most furnaces can work properly for 15 to 30 years. If your HVAC system is on the older side and you decide to replace one unit, it might make sense to replace both simultaneously to save on costs and future hassle.
While different HVAC contractors might offer higher or lower prices than competitors, the best time to replace your HVAC system is when customer demand is low. The beginning of summer and the beginning of winter bring the most demand for HVAC systems, so if you can, consider replacing your HVAC units in the early spring or fall. Many HVAC companies offer special off-season coupons that help lower the overall cost.
The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.
Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.
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