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TRUSTED BY UNION CITY, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon123
    Verified water heater services reviews

Find Water heater pros in Union City

Avatar for RG Construction

RG Construction

5.00(
8
)
Approved Pro

RG Construction

5.00(
8
)
Approved Pro
Free onsite estimate
Emergency services offered

We have been in the construction industry for over 10 years. From building ADUs, high-end kitchen remodels, bathroom remodels and home extensions, we have done just about everything under general construction. Our company prioritizes safety, quality and transparency.

"Me and my wife decided recently to get our kitchen remolded. After some time searching for the right guys to do the job we settled on RG Construction. Richard, who is the owner, is a great guy and super informative. He never left any question unanswered or left us uncertain about anything. His crew works quick, and they pay attention to the tiniest detail. They absolutely are worth every dollar and I would recommend RG Construction to any homeowner, and I for sure will be giving them a call back for any work I need done in the future. Me and my wife are absolutely in love with our remodel."

Jesse O on November 2025

We have been in the construction industry for over 10 years. From building ADUs, high-end kitchen remodels, bathroom remodels and home extensions, we have done just about everything under general construction. Our company prioritizes safety, quality and transparency.

"Me and my wife decided recently to get our kitchen remolded. After some time searching for the right guys to do the job we settled on RG Construction. Richard, who is the owner, is a great guy and super informative. He never left any question unanswered or left us uncertain about anything. His crew works quick, and they pay attention to the tiniest detail. They absolutely are worth every dollar and I would recommend RG Construction to any homeowner, and I for sure will be giving them a call back for any work I need done in the future. Me and my wife are absolutely in love with our remodel."

Jesse O on November 2025


Avatar for Prime Time Plumbing

Prime Time Plumbing

5.00(
3
)
Approved Pro

Prime Time Plumbing

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 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!

"I had a great experience with them. They did a tankless water heater for a fair price and helped install new water lines for my espresso machine in my cafe. Would recommend to anyone who needs the job done right!"

Alex H on October 2023

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!

"I had a great experience with them. They did a tankless water heater for a fair price and helped install new water lines for my espresso machine in my cafe. Would recommend to anyone who needs the job done right!"

Alex H on October 2023


Avatar for AMJ Services - Unlicensed Contractor

AMJ Services - Unlicensed Contractor

5.00(
3
)
Approved Pro

AMJ Services - Unlicensed Contractor

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

AMJ Services is a family owned, locally operated home repair and home improvement company with over 10+ years experience servicing San Joaquin county. We provide an extensive list of comprehensive services to include everything from home repairs, assembly, and installation to larger home improvement and remodeling projects. We are committed to quality work, great prices and we get back to our clients right away to schedule your project! Regardless of the size of your project... simple repairs, installation and furniture assembly or larger projects, you can rely on us for exceptional workmanship and competitive prices for a JOB DONE RIGHT! Call us today to get your repairs or projects scheduled! 510-224-8204

"Awesome"

Betty K on May 2023

AMJ Services is a family owned, locally operated home repair and home improvement company with over 10+ years experience servicing San Joaquin county. We provide an extensive list of comprehensive services to include everything from home repairs, assembly, and installation to larger home improvement and remodeling projects. We are committed to quality work, great prices and we get back to our clients right away to schedule your project! Regardless of the size of your project... simple repairs, installation and furniture assembly or larger projects, you can rely on us for exceptional workmanship and competitive prices for a JOB DONE RIGHT! Call us today to get your repairs or projects scheduled! 510-224-8204

"Awesome"

Betty K on May 2023


Mendoza Plumbing Services - Unlicensed Contractor

New on AngiNew on Angi
Approved Pro

Mendoza Plumbing Services - Unlicensed Contractor

New on AngiNew on Angi
Approved Pro
5 years of experience
Free onsite estimate

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!


Pedro Galvan Plumbing, Inc.

4.85(
17
)
Approved Pro

Pedro Galvan Plumbing, Inc.

4.85(
17
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
21 years of experience

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"We are incredibly grateful to Pedro Galvan and his team for stepping in during a moment of urgent need. When our hot water system suddenly failed, leaving us without hot water for daily essentials, Pedro responded with a level of professionalism, clarity, and compassion that is truly rare. From the very first call, Pedro was attentive, transparent about pricing, and committed to solving the problem quickly. He provided us with the most cost-effective and honest quote out of several we obtained—and, even more importantly, was able to come almost immediately when others could not. His workmanship was precise, efficient, and tidy. It was clear we were in the hands of someone who genuinely takes pride in his craft. In a world where so many service professionals overpromise and underdeliver, Pedro Galvan delivers exactly what he promises—and does so with warmth, integrity, and a deep respect for his clients. We recommend him without hesitation to anyone needing plumbing services."

Nicola S on July 2025

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"We are incredibly grateful to Pedro Galvan and his team for stepping in during a moment of urgent need. When our hot water system suddenly failed, leaving us without hot water for daily essentials, Pedro responded with a level of professionalism, clarity, and compassion that is truly rare. From the very first call, Pedro was attentive, transparent about pricing, and committed to solving the problem quickly. He provided us with the most cost-effective and honest quote out of several we obtained—and, even more importantly, was able to come almost immediately when others could not. His workmanship was precise, efficient, and tidy. It was clear we were in the hands of someone who genuinely takes pride in his craft. In a world where so many service professionals overpromise and underdeliver, Pedro Galvan delivers exactly what he promises—and does so with warmth, integrity, and a deep respect for his clients. We recommend him without hesitation to anyone needing plumbing services."

Nicola S on July 2025


Avatar for Super Velazquez Handyman

Super Velazquez Handyman

New on AngiNew on Angi
Approved Pro

Super Velazquez Handyman

New on AngiNew on Angi
Approved Pro
8 years of experience
Free onsite estimate

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!


Avatar for P A Remodeling/Sami & Sons, Inc.

P A Remodeling/Sami & Sons, Inc.

4.36(
7
)
Approved Pro

P A Remodeling/Sami & Sons, Inc.

4.36(
7
)
Approved Pro
Customers say: Quality work
9 years of experience
Free onsite estimate

We’re a family business: Sami, Pini and their sons are the core of Sami and Sons. When you work with us you’re treated like family. We value our customer’s time, needs, and opinions. We want to build beautiful things together and help your home fit your needs. We bring Silicon Valley to building: Whether we are remodeling your kitchen or building you a new home we have all the tools needed to make the process seamless. From 3-D designs to VR (virtual reality) walk-throughs you will know exactly how your project will look at completion. We are here for you every step: You will be taken care of and in touch with your own personal project manager that is assigned to you and your project. We are there for every development and every question. You’re family, we’ll take care of you. Our customers love us: And we love them too. Check out our Houzz, Yelp, and Facebook!

"We chose Sami and Sons over 3 other contractors we interviewed with to remodel our bathroom, and we couldn't be happier. After meeting with Abel and Sami himself we discussed a very reasonable cost estimate for the work that needed to be done. Abel even took us out shopping to several tile and home improvement stores to fan our imaginations of what could be possible for our new bathroom. Throughout the entire process the staff from their front office to their onsite project manager Paul were always very responsive and helpful. This was our first major remodel and laborers were very knowledgeable about creating the bathroom we wanted to achieve while keeping up to date with building codes and city permits. Mario and Erick always asked us questions on how we wanted details in the bathroom to turn out. Always gave us suggestions when we were clueless, and always advised us properly when choosing fixtures and other materials for the build. It was very helpful and reassuring that the managers used the BuilderTrend scheduling app so we knew what tasks were to be completed and on what days so my wife and I could plan things ahead of time. There was a miscommunication about the work at one point, but once we were able to talk to the project manager and other managers on the job they were able to resolve the issue very quickly and to our satisfaction. Scheduling work per day could've been more efficient, but overall we loved the results and our bathroom turned out exactly the way we envisioned and we've been loving it ever since it's completion. Thanks again Sami and Sons for making our dream come true."

Deo B on October 2021

We’re a family business: Sami, Pini and their sons are the core of Sami and Sons. When you work with us you’re treated like family. We value our customer’s time, needs, and opinions. We want to build beautiful things together and help your home fit your needs. We bring Silicon Valley to building: Whether we are remodeling your kitchen or building you a new home we have all the tools needed to make the process seamless. From 3-D designs to VR (virtual reality) walk-throughs you will know exactly how your project will look at completion. We are here for you every step: You will be taken care of and in touch with your own personal project manager that is assigned to you and your project. We are there for every development and every question. You’re family, we’ll take care of you. Our customers love us: And we love them too. Check out our Houzz, Yelp, and Facebook!

"We chose Sami and Sons over 3 other contractors we interviewed with to remodel our bathroom, and we couldn't be happier. After meeting with Abel and Sami himself we discussed a very reasonable cost estimate for the work that needed to be done. Abel even took us out shopping to several tile and home improvement stores to fan our imaginations of what could be possible for our new bathroom. Throughout the entire process the staff from their front office to their onsite project manager Paul were always very responsive and helpful. This was our first major remodel and laborers were very knowledgeable about creating the bathroom we wanted to achieve while keeping up to date with building codes and city permits. Mario and Erick always asked us questions on how we wanted details in the bathroom to turn out. Always gave us suggestions when we were clueless, and always advised us properly when choosing fixtures and other materials for the build. It was very helpful and reassuring that the managers used the BuilderTrend scheduling app so we knew what tasks were to be completed and on what days so my wife and I could plan things ahead of time. There was a miscommunication about the work at one point, but once we were able to talk to the project manager and other managers on the job they were able to resolve the issue very quickly and to our satisfaction. Scheduling work per day could've been more efficient, but overall we loved the results and our bathroom turned out exactly the way we envisioned and we've been loving it ever since it's completion. Thanks again Sami and Sons for making our dream come true."

Deo B on October 2021


Avatar for Chandler's Plumbing

Chandler's Plumbing

4.53(
631
)
Approved Pro

Chandler's Plumbing

4.53(
631
)
Approved Pro
Super Service Award
Customers say: Super punctual
483 local quotes requested
24 years of experience

We are the water heater and sewer experts of Santa Clara County offering free estimates, fair rates, and superior workmanship. Our team has been servicing the Bay Area for over 20 years. Our company is licensed, bonded, and insured. Our specialists are equipped, experienced, and provides a full range of services. We guarantee our work and can beat any quote by 10%.

"Efficient work and reasonable price"

XIANG G on December 2025

We are the water heater and sewer experts of Santa Clara County offering free estimates, fair rates, and superior workmanship. Our team has been servicing the Bay Area for over 20 years. Our company is licensed, bonded, and insured. Our specialists are equipped, experienced, and provides a full range of services. We guarantee our work and can beat any quote by 10%.

"Efficient work and reasonable price"

XIANG G on December 2025


Avatar for Quality Pump Service

Quality Pump Service

4.51(
47
)
Approved Pro

Quality Pump Service

4.51(
47
)
Approved Pro
Customers say: Quick response
21 local quotes requested
15 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.

"Promptness in responses. Professional and courteous and did quality work! "

Jayson T on July 2025

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.

"Promptness in responses. Professional and courteous and did quality work! "

Jayson T on July 2025


Avatar for Plumbing 1 Builder's Inc

Plumbing 1 Builder's Inc

5.00(
14
)
Approved Pro

Plumbing 1 Builder's Inc

5.00(
14
)
Approved Pro
Super Service Award
132 local quotes requested
14 years of experience

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"These guys were great. Fixed the issue and went above and beyond with a few extra repairs. Professional and cleaned up everything. I will definitely reach out again for any work in the future."

Casey G on November 2025

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"These guys were great. Fixed the issue and went above and beyond with a few extra repairs. Professional and cleaned up everything. I will definitely reach out again for any work in the future."

Casey G on November 2025

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Water Heaters questions, answered by experts

Not all homes are required by code to have water heater expansion tanks, though some cities, like Los Angeles, do. Sometimes, municipalities will require a code that asks homeowners to install an expansion tank if their water heater is on a closed system. A closed system setup without an expansion tank can place unnecessary stress on appliances and shorten their lifespan.

A single shower consumes an average of over 17 gallons, while brushing your teeth with the water running uses up to four unnecessary gallons. Watering the lawn spreads hundreds of gallons of water across the yard each time. Limiting water usage in these areas can significantly cut down your water bill.

An average-sized empty water heater weighs around 150 pounds. Tankless water heaters are much lighter, weighing between 10 and 50 pounds. The smaller size and added convenience come at a price, though—tankless water heaters average about twice the price of their traditional counterparts.

Yes, you can replace a current tank water heater with a tankless model or vice versa. If you’re maintaining the same fuel source—gas or electricity—the switchover should be smooth. A conventional tank requires open floor space, while a tankless model can be wall-mounted. If you’re switching to a tank water heater, you might need to clear space for it. Gas-powered tankless water heaters need a large volume of gas when they start running to heat the water instantly. You might need to increase the size of the gas line when going from a tank to a tankless model.

Yes, this would be an appropriate choice. In order to comply with the National Electric Code’s rules, you'll need to install a circuit breaker that's 125% larger than the intended load. In this case, you'll multiply 30 amps by 1.25 to find the necessary breaker size. Plugging that equation in for your 30-amp water heater will leave you with a 37.6-amp breaker. If your current water heater keeps tripping the breaker, it might be time to talk to a plumber or electrician about upgrading your water heater's setup.

The Union City, CA homeowners’ guide to water heater services

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

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