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Top-Rated Water heater repair or service pros in Monrovia - Updated Nov 2026

Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
172
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"Daniel arrived on time, bathroom tub work was estimated and confirmed to repair to stopped leaking faucets. Also had toilet valve replaced. Very pleased with work done. Will use this service again.?"
Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.
Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??
Sewer Line Camera
No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.
HALO 5 whole house water filtration system.

+542

Response time12 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.2(
132
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Perfectly. They cleaned everything up, explained how the system worked and how often it needs attention, and hauled away the old hot water heater. They arrived on time, worked steadily, and finished before dinner time."
New Tankless Water Heater Installation
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Response time8 hrs
Response rate100%
Recommended by73%of homeowners
Avatar for Service Champions Plumbing, Heating & AC
Service Champions Plumbing, Heating & AC
4.4(
50
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Kayvan was a wonderful service tech! He was on time and professionally checked out the water heater and the HVAC system. He was so polite and friendly. He explained the need for a new filter in the heating unit and showed me photos of the unit located in the attic. He also offered to do a friendly deed for free, which I greatly appreciated, He’s a great asset to Service Champions!"
Area Drain Cleaning
Plumbing
Plumbing
Garbage Disposal
Drain Cleaning

+13

Response time4 hrs
Recommended by79%of homeowners
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
37
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Mike was great! He was friendly and knowledgeable. He let me know all the options for replacing my water heater and did the work quickly and neatly. Will definitely be calling him again!"
Plumbing - Drain Cleaning Project
Sewer cleaned of roots and ready for lining
Prepping pipe for lining by removing massive roots
Mixing resin for liners, this resin gardens to create a solid pipe
Sewer robot in the pipe

+26

Response time9 hrs
9 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for Sweetwater Plumbing Industries, Inc.
Sweetwater Plumbing Industries, Inc.
4.0(
620
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Technician Ruben was able to spot where the issue with the water heater and he also able to fix it right away. I have asked 3 other plumbing company for bid they all recommend to replace the water heater. So Sweetwater literally saved me thousands!! Thank you!"
Water Heater Installation
Plumbing Services
Water Heater
Plumbing Services
On Time Service

+36

Response time3 hrs
20 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Ace’s Plumbing Services
Ace’s Plumbing Services
5.0(
20
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Athen was very professional. He emailed me and text me to confirm our appointment. He provided me with a written estimate and completed the job as agreed. I believe he was very reasonable in his cost for replacing the garbage disposal. He was quick and efficient. I would use his services again."
Water Heater Installation
Valve/Regulator
Tankless Heater
Copper Spot Repair
Automatic Shutoff

+2

Avatar for AD3 PLUMBING
AD3 PLUMBING
4.9(
17
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

"Really great experience. Called AD3 after finding that faucet would not turn the water off after watering my lawn. Adrian answered and explained that he was on a job but he would get another plumber to come more quickly. He called back within a few minutes and said someone would be coming soon. Within 20 mins. A Diaz Plumbing van arrived and 2 very experienced and nice plumbers quickly got to work replacing the faucet! All of this occurred in less than an hour and the cost was very reasonable. Adrian Diaz and AD3 are now on my contact list. My water bill thanks them!!"
Water Heater Install
Water Heater Install
Replace Toilet Flange
Replace Toilet Flange
Replace Toilet Flange

+6

Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for Walter's Good Plumbing, LLC
Walter's Good Plumbing, LLC
5.0(
3
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"â I recently had the pleasure of working with Garrett from Walterâ s Plumbing on multiple occasions, and I must say, his service has been nothing short of exceptional. Garrett has a unique blend of professionalism and personability that makes every plumbing task seem effortless. When my kitchenâ s dish disposal unit malfunctioned, Garrett was quick to diagnose and fix the issue, showcasing his in-depth knowledge and expertise in plumbing systems. His work didnâ t just stop at repairs; he also expertly installed a new air vent for my dryer, ensuring everything was up to code and functioning efficiently. In addition to plumbing, Garrett proved his versatility by changing out the lights and fixing the fan in my office. These tasks, although not typical for a plumber, were handled with the same diligence and attention to detail as his primary trade. Most impressively, Garrett installed a new water meter for my sprinkler system. This task, essential for my lawn care, was completed with precision and understanding of my specific needs. Throughout the process, Garrett was patient, taking the time to explain each step and ensuring I was comfortable and informed. What truly sets Garrett apart is his trustworthiness. In every job he undertook, he demonstrated integrity and a strong work ethic, making sure that the work was not just completed, but done right. In conclusion, Garrett is an exemplary plumber who goes above and beyond. His helpfulness, diligence, understanding, patience, knowledge, and personable nature make him a standout professional. I highly recommend Garrett from Walterâ s Plumbing for any plumbing needs; heâ s truly a master of his craft.â"
Install
Noritz Tankless
Electric water heater
Tank Water heaters
40k BTU 50 Gallon

+1

Response time2 hrs
Recommended by100%of homeowners
Avatar for Merry Plumbing
Merry Plumbing
5.0(
6
)
Water Heater - Repair or Service

Serving Monrovia, CA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Credit card accepted

At Merry San Marino Plumbing, we've provided plumbing services with a "get the job done right the first time" attitude since 1946. We believe one of the keys to customer satisfaction is long-lasting quality, and that means making sure our solutions not only fix the issue but keep it fixed for a long time to come. This philosophy has earned us a trusted reputation for reliability and exceptional value that we’re eager to uphold with every customer.

3 neighbors recently requested a quote
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FAQs for water heater repair or service projects in Monrovia, CA

Warning signs include fluctuating water temperatures, a pilot light that repeatedly goes out, unusual noises from the tank, or complete heating failure. You might also detect a rotten egg smell, indicating a potential gas leak, or notice water that never reaches the proper temperature. If your water heater is over eight years old and displaying these symptoms, the gas valve is a likely culprit. Professional inspection is recommended, especially if gas odors are present.

Water heater gas valves are not universally interchangeable. Each valve must match your specific water heater's make, model, and specifications. Important compatibility factors include gas type (natural gas vs. propane), BTU rating, connection types, and physical dimensions. Using an incorrect valve can result in poor performance, premature failure, or dangerous gas leaks. Always consult your water heater's documentation or a professional plumber to identify the appropriate replacement valve for your unit.

The Monrovia, CA homeowners’ guide to water heater repair or services

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