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Tankless water heater repair pros in Altadena

Avatar for Proview Plumbing & Rooter Inc.
Proview Plumbing & Rooter Inc.
901 N 3rd St
4.94(
16
)
Approved Pro
Proview Plumbing & Rooter Inc.
901 N 3rd St
4.94(
16
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
45 local quotes requested

We At Proview Plumbing & Rooter, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Kind, efficient, and honest. Knowledgeable and experienced. Will work with Art and his team again!"

Alexis F on January 2024

We At Proview Plumbing & Rooter, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Kind, efficient, and honest. Knowledgeable and experienced. Will work with Art and his team again!"

Alexis F on January 2024


Avatar for West Coast Plumbing
West Coast Plumbing
723 East Valencia Ave
5.00(
3
)
Approved Pro
West Coast Plumbing
723 East Valencia Ave
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

At West Coast Plumbing, 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!

"We used West coast plumbing to help with a leak we had in the house. They did an exceptional job. They were very prompt and informative about the issue and the work that needed to be performed. We will be calling them for any future needs."

Lucy C on September 2023

At West Coast Plumbing, 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!

"We used West coast plumbing to help with a leak we had in the house. They did an exceptional job. They were very prompt and informative about the issue and the work that needed to be performed. We will be calling them for any future needs."

Lucy C on September 2023


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
301 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 Sweetwater Plumbing Industries, Inc.
Sweetwater Plumbing Industries, Inc.
4667 Holt Blvd
4.49(
492
)
Approved Pro
Sweetwater Plumbing Industries, Inc.
4667 Holt Blvd
4.49(
492
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
16 local quotes requested

Sweetwater Plumbing, in California offers commercial and residential plumbing services and specializes in affordable drain cleaning. With 15 years of experience in the plumbing industry, no job is too large or small for our experienced plumbers and we are available 24 hours a day, 7 days a week. Whether it is water heater repairs, a copper re-pipe, a water softener installation, or a complete home improvement with new construction, our customers get affordable prices from plumbers who take pride in their craft. Our plumbers are trained and knowledgeable on current technology and methods. We take the time to explain the most cost-effective methods to repair or install plumbing. This commitment to excellent customer service is the reason our client base continues to grow and we continue to expand our service area.

"Fast and efficient. Will definitely use again."

Dana H on October 2024

Sweetwater Plumbing, in California offers commercial and residential plumbing services and specializes in affordable drain cleaning. With 15 years of experience in the plumbing industry, no job is too large or small for our experienced plumbers and we are available 24 hours a day, 7 days a week. Whether it is water heater repairs, a copper re-pipe, a water softener installation, or a complete home improvement with new construction, our customers get affordable prices from plumbers who take pride in their craft. Our plumbers are trained and knowledgeable on current technology and methods. We take the time to explain the most cost-effective methods to repair or install plumbing. This commitment to excellent customer service is the reason our client base continues to grow and we continue to expand our service area.

"Fast and efficient. Will definitely use again."

Dana H on October 2024


Avatar for Trusty Rooter, Inc.
Trusty Rooter, Inc.
3049 Montrose Ave, Apt 54
5.00(
6
)
Approved Pro
Trusty Rooter, Inc.
3049 Montrose Ave, Apt 54
5.00(
6
)
Approved Pro
Customers say: Quick response
25 years of experience
Emergency services offered

Trusty Rooter proudly serves Los Angeles with expert plumbing solutions tailored to meet your needs. We specialize in drain services, including thorough drain cleaning, advanced hydrojetting to remove stubborn clogs, and reliable sewer line repairs. We also offer repiping services to upgrade your plumbing system, water heater repairs to restore your hot water, and other comprehensive plumbing solutions to keep your home running smoothly. At Trusty Rooter, we’re committed to delivering top-quality workmanship, outstanding customer service, and efficient, lasting results for every project. Whether you need routine maintenance or urgent repairs, you can count on us for professional, reliable service.

"Great service!"

Rakesh B on May 2025

Trusty Rooter proudly serves Los Angeles with expert plumbing solutions tailored to meet your needs. We specialize in drain services, including thorough drain cleaning, advanced hydrojetting to remove stubborn clogs, and reliable sewer line repairs. We also offer repiping services to upgrade your plumbing system, water heater repairs to restore your hot water, and other comprehensive plumbing solutions to keep your home running smoothly. At Trusty Rooter, we’re committed to delivering top-quality workmanship, outstanding customer service, and efficient, lasting results for every project. Whether you need routine maintenance or urgent repairs, you can count on us for professional, reliable service.

"Great service!"

Rakesh B on May 2025


Avatar for INCREDIBLE PLUMBER
INCREDIBLE PLUMBER
17922 Collins St
New on HomeAdvisorNew on Angi
Approved Pro
INCREDIBLE PLUMBER
17922 Collins St
New on AngiNew on HomeAdvisor
Approved Pro
3 years of experience
Free onsite estimate

Incredible Plumber 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.

Incredible Plumber 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.


Local Plumbers
1497 Oswald St.
5.00(
1
)
Approved Pro
Local Plumbers
1497 Oswald St.
5.00(
1
)
Approved Pro
4 years of experience

Local Plumbers 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.

Local Plumbers 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.


Avatar for Overland Plumbing
Overland Plumbing
14538 Friar Street
4.43(
730
)
Approved Pro
Overland Plumbing
14538 Friar Street
4.43(
730
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
337 local quotes requested

Overland Plumbing is your local plumbing installation and repair company. We specialize in residential plumbing services for both new and old homes. We look forward to helping you. Call us today.

"n/a"

Rachel S on May 2025

Overland Plumbing is your local plumbing installation and repair company. We specialize in residential plumbing services for both new and old homes. We look forward to helping you. Call us today.

"n/a"

Rachel S on May 2025


Avatar for California Drains Incorporated
California Drains Incorporated
1424 7th Street
5.00(
6
)
Approved Pro
California Drains Incorporated
1424 7th Street
5.00(
6
)
Approved Pro
Customers say: Quick response
111 local quotes requested
11 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"This company is the best. They were upfront on the cost of the repairs and did a fantastic job. They will aways be our first choice for any future plumbing projects. Thank you, California Drains!"

Nikolai W on February 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"This company is the best. They were upfront on the cost of the repairs and did a fantastic job. They will aways be our first choice for any future plumbing projects. Thank you, California Drains!"

Nikolai W on February 2025


Avatar for Leon Plumbing
Leon Plumbing
2409 Janet Lee Drive
4.92(
60
)
Approved Pro
Leon Plumbing
2409 Janet Lee Drive
4.92(
60
)
Approved Pro
Customers say: True professional
19 local quotes requested
42 years of experience

We are a locally family owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of Heating/ Air Conditioning services and more. Providing customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. With 20 years of experience in the field we offer excellence every time.

"Great service, reasonable prices, and they keep their word on time and estimates. My machine is running just like new. "

Nick T on June 2025

We are a locally family owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of Heating/ Air Conditioning services and more. Providing customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. With 20 years of experience in the field we offer excellence every time.

"Great service, reasonable prices, and they keep their word on time and estimates. My machine is running just like new. "

Nick T on June 2025

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Tankless water heater installations FAQs

Professional flushing services for tankless water heaters run about $200 per visit. This essential maintenance procedure eliminates mineral deposits from critical components, particularly the heat exchanger. While homeowners can purchase DIY flushing kits for $50 to $100, professional service offers the advantage of thorough cleaning with proper techniques. Professional maintenance also includes inspection of additional components that might need attention.

Industry experts and manufacturers recommend annual maintenance for tankless water heaters, with more frequent service (every six months) for homes with challenging water conditions. This regular attention prevents efficiency losses and extends the unit's operational lifespan. Watch for warning signs like reduced water temperature, inconsistent performance, or system error codes that might indicate maintenance is needed sooner than scheduled.

Neglecting regular maintenance allows mineral scale to accumulate within your system, restricting water flow and reducing heating efficiency. This forces your unit to work harder, consuming more energy while delivering less satisfactory performance. Over time, this strain can lead to component failures, inconsistent water temperatures, and premature system replacement. Additionally, most manufacturers require documentation of regular maintenance to honor warranty coverage for major components.

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