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Water heater installers and replacers in Diamond Bar

Avatar for Your Plumbing Solution, Corp.
Your Plumbing Solution, Corp.
13932 Valley Boulevard, Suite H
4.14(
54
)
Approved Pro
Your Plumbing Solution, Corp.
13932 Valley Boulevard, Suite H
4.14(
54
)
Approved Pro
Customers say: Quality work
21 years of experience
Free onsite estimate

Your Plumbing Solution, Corp. is a locally owned and operated company that has been in business since 2004 and has 33 years of experience from our Master Plumber Michael Cordova. We install confidence and are here for all your plumbing needs. We treat each job as if it were our own home. Call us today!

"The only suggestion I have is that they could do a better job doing after clean up. Need to invest in a portable vacuum cleaner. Work is excellent though. Miguel is an excellent plumber and Luis also did a good job! Both were very professional."

Gregory A on November 2020

Your Plumbing Solution, Corp. is a locally owned and operated company that has been in business since 2004 and has 33 years of experience from our Master Plumber Michael Cordova. We install confidence and are here for all your plumbing needs. We treat each job as if it were our own home. Call us today!

"The only suggestion I have is that they could do a better job doing after clean up. Need to invest in a portable vacuum cleaner. Work is excellent though. Miguel is an excellent plumber and Luis also did a good job! Both were very professional."

Gregory A on November 2020


Avatar for Cruz Plumbing and Rooter Services
Cruz Plumbing and Rooter Services
1308 Monte Vista Avenue, Suite 4
4.92(
13
)
Approved Pro
Cruz Plumbing and Rooter Services
1308 Monte Vista Avenue, Suite 4
4.92(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 years of experience

Cruz Plumbing and Rooter Services began our business with the main focus on Customer Service. It is our goal to treat every client as family. We will answer each question, giving you the confidence in our services, repairs and pricing. Our pride is to provide our customers with the information for them to be able to make informed, educated decisions when it comes to their plumbing service needs. Our team has been highly trained in all jobs, large or small, and is in contact with myself to ensure the job is completed to the stated specifics. We thank you for selecting Cruz Plumbing and Rooter Services. We appreciate your call to give us the opportunity to provide you with the best services and pricing available. Christian Cruz

"Very Professional and knowledgeable with plumbing. Mr Cruz provided quick service and understood why we wanted this project done quickly to facilitate my mother's handicap situation. Hoping to give him more business in the future. Thank You"

Kaizad A on June 2022

Cruz Plumbing and Rooter Services began our business with the main focus on Customer Service. It is our goal to treat every client as family. We will answer each question, giving you the confidence in our services, repairs and pricing. Our pride is to provide our customers with the information for them to be able to make informed, educated decisions when it comes to their plumbing service needs. Our team has been highly trained in all jobs, large or small, and is in contact with myself to ensure the job is completed to the stated specifics. We thank you for selecting Cruz Plumbing and Rooter Services. We appreciate your call to give us the opportunity to provide you with the best services and pricing available. Christian Cruz

"Very Professional and knowledgeable with plumbing. Mr Cruz provided quick service and understood why we wanted this project done quickly to facilitate my mother's handicap situation. Hoping to give him more business in the future. Thank You"

Kaizad A on June 2022


Avatar for Top Notch Plumbing, Inc.
Top Notch Plumbing, Inc.
4903 North Vecino Drive
4.89(
22
)
Approved Pro
Top Notch Plumbing, Inc.
4903 North Vecino Drive
4.89(
22
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
9 years of experience

At Top Notch Plumbing Inc. we are your premiere source for Plumbing Since 2016 our company has offered the finest in craftsmanship and quality. For the best of the best call today for your next project.

"The work performed was excellent, but I felt they were expensive"

Kathy W on May 2024

At Top Notch Plumbing Inc. we are your premiere source for Plumbing Since 2016 our company has offered the finest in craftsmanship and quality. For the best of the best call today for your next project.

"The work performed was excellent, but I felt they were expensive"

Kathy W on May 2024


Avatar for Austin Hill Plumbing
Austin Hill Plumbing
123 E 2nd St
New on HomeAdvisorNew on Angi
Approved Pro
Austin Hill Plumbing
123 E 2nd St
New on AngiNew on HomeAdvisor
Approved Pro
3 years of experience
Free onsite estimate

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Austin Hill Plumbing strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Austin Hill Plumbing strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.


Avatar for Plumbers Hub LLC
Plumbers Hub LLC
9042 Sycamore AVE #109
5.00(
4
)
Approved Pro
Plumbers Hub LLC
9042 Sycamore AVE #109
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

Plumbers Hub LLC has been dedicated to this craft for over 15 years. We pride the company on reliability, excellent communication, integrity, and quality work. We strongly believe in giving our absolute best in all our projects no matter how big or small. We look forward to earning your business!

"Readily available and quick to provide service. Plumber Hubs has come to our rescue at critical times of need. Weâ ve recommended them time and again to neighbors and friends. The company was very professional and accurate in detecting the problem the first time around. The number is saved to contacts for quick reference!"

Vanessa L on August 2021

Plumbers Hub LLC has been dedicated to this craft for over 15 years. We pride the company on reliability, excellent communication, integrity, and quality work. We strongly believe in giving our absolute best in all our projects no matter how big or small. We look forward to earning your business!

"Readily available and quick to provide service. Plumber Hubs has come to our rescue at critical times of need. Weâ ve recommended them time and again to neighbors and friends. The company was very professional and accurate in detecting the problem the first time around. The number is saved to contacts for quick reference!"

Vanessa L on August 2021


Avatar for Rooter Warrior Plumbing & Drain Cleaning - Home  Facebook
Rooter Warrior Plumbing & Drain Cleaning - Home Facebook
14229 Perkins Drive
5.00(
1
)
Approved Pro
Rooter Warrior Plumbing & Drain Cleaning - Home Facebook
14229 Perkins Drive
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 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! Book with us online, or feel free to give us a call today!

"Very helpful but not pushy about parts made me feel very comfortable."

Alax M on November 2018

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!

"Very helpful but not pushy about parts made me feel very comfortable."

Alax M on November 2018


Avatar for FLOW MASTER PLUMBING CORP
FLOW MASTER PLUMBING CORP
1013 HOLLY AVE UNIT A
5.00(
7
)
Approved Pro
FLOW MASTER PLUMBING CORP
1013 HOLLY AVE UNIT A
5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

Detailed efficient dependable With over 15 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We work for our customers on their schedule, as to make it as convenient as possible for you! We look forward to working with you!

"I couldnâ t be happier with the work and communication by Wilson. I would happily hire him again and will recommend him and Flow Master to others."

Lisa H on October 2023

Detailed efficient dependable With over 15 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We work for our customers on their schedule, as to make it as convenient as possible for you! We look forward to working with you!

"I couldnâ t be happier with the work and communication by Wilson. I would happily hire him again and will recommend him and Flow Master to others."

Lisa H on October 2023


Bruce's Plumbing Service
6031 Oak Meadow Drive
4.83(
38
)
Approved Pro
Bruce's Plumbing Service
6031 Oak Meadow Drive
4.83(
38
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
19 years of experience

Bruce's Plumbing Service has been serving Orange County with the best plumbing around since 2006. Locally operated by myself, owner Bruce Mallock, I make sure the job gets done right the first time. Our focus is to professionally and accurately complete your job with a high priority of customer service. We specialize in plumbing from water, gas & sewer lines to water tanks, faucets, valves & disposals of all types. No project is too big or too small. Call Bruce's Plumbing Service today!

"He is a joke, he sent a text, i told him i needed a water heater for a mobile home. When he came he ask me to help him install it. The he complained he could not do it. He said i should have sent photos, a good plumer would have ask for them. But he sent a bad text to me. DO NOT USE THEM BAD PLUMER HE Can not install a water heater"

Dan G on June 2025

Bruce's Plumbing Service has been serving Orange County with the best plumbing around since 2006. Locally operated by myself, owner Bruce Mallock, I make sure the job gets done right the first time. Our focus is to professionally and accurately complete your job with a high priority of customer service. We specialize in plumbing from water, gas & sewer lines to water tanks, faucets, valves & disposals of all types. No project is too big or too small. Call Bruce's Plumbing Service today!

"He is a joke, he sent a text, i told him i needed a water heater for a mobile home. When he came he ask me to help him install it. The he complained he could not do it. He said i should have sent photos, a good plumer would have ask for them. But he sent a bad text to me. DO NOT USE THEM BAD PLUMER HE Can not install a water heater"

Dan G on June 2025


Avatar for Redhead Rooter, Inc.
Redhead Rooter, Inc.
517 N Mountain Ave
4.74(
31
)
Approved Pro
Redhead Rooter, Inc.
517 N Mountain Ave
4.74(
31
)
Approved Pro
Customers say: True professional
302 local quotes requested
14 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Giovanni was prompt, courteous, and professional. He fixed the problem quickly."

Cliff C on May 2025

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Giovanni was prompt, courteous, and professional. He fixed the problem quickly."

Cliff C on May 2025


Avatar for Pisces Plumbing
Pisces Plumbing
1452 N San Diego Pl
5.00(
10
)
Approved Pro
Pisces Plumbing
1452 N San Diego Pl
5.00(
10
)
Approved Pro
1 years of experience
Free onsite estimate

We have a single mission: Complete Customer Satisfaction! We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience. You will find us to be competitively priced with close attention to the details. Our reputation is based on service, safety, and quality, regardless of how large or small the job. We look forward to building a lasting relationship and guarantee your satisfaction!

"He completed a huge job of repiping my entire house in a single day! His crew were incredible, polite, and incredibly professional. Will hire them again!"

Chris B on May 2025

We have a single mission: Complete Customer Satisfaction! We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience. You will find us to be competitively priced with close attention to the details. Our reputation is based on service, safety, and quality, regardless of how large or small the job. We look forward to building a lasting relationship and guarantee your satisfaction!

"He completed a huge job of repiping my entire house in a single day! His crew were incredible, polite, and incredibly professional. Will hire them again!"

Chris B on May 2025

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Water heater installations and replacements FAQs

You'll need an expansion tank if your home has a closed water system, which is standard in newer homes or those with backflow preventers or pressure regulators. Expanding hot water has nowhere to go in closed systems, creating potentially damaging pressure. The expansion tank provides space for this expanded water, protecting your plumbing system and water heater from premature failure. Many local building codes now require expansion tanks, and some water heater warranties may be voided without one.

For a standard 50-gallon water heater, a two-gallon expansion tank is sufficient. This sizing assumes normal household water pressure between 40 and 60 psi. If your home has higher water pressure (60 to 80 psi), consider upgrading to a slightly larger tank for added protection. The expansion tank's purpose is to accommodate the increased volume that occurs when cold water heats up, which is proportional to your water heater's capacity.

Watch for signs like dripping water around the tank, fluctuating water pressure throughout your home, or unusual noises in your plumbing system. A properly functioning expansion tank should feel light when tapped on the bottom—if it feels heavy or waterlogged, the internal bladder has likely failed. Other indicators include frequent triggering of your temperature and pressure relief valve, visible corrosion on the tank, or unexplained increases in your water bill, suggesting hidden leaks.

Most expansion tanks have a service life of five to 10 years, though some may last up to 12 years or more with proper maintenance. Factors affecting lifespan include water quality, system pressure, installation quality, and tank construction. Hard water areas often see shorter lifespans due to mineral buildup. Regular maintenance checks can help identify potential issues before complete failure. When your water heater is due for replacement, it's wise to replace the expansion tank simultaneously, even if it hasn't failed yet.

A 30-gallon water heater needs an expansion tank if your home has a closed plumbing system. The need for an expansion tank is determined by your plumbing system type rather than water heater size. Even smaller water heaters create thermal expansion when heating water. If your home has a backflow preventer, pressure regulator, or check valve on the main water line, you have a closed system that requires an expansion tank. Check your local plumbing codes, as many jurisdictions now mandate expansion tanks regardless of water heater size.

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