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TRUSTED BY SIMI VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon104
    Verified water heater services reviews

Top-Rated Water heater pros in Simi Valley - Updated Nov 2026

Avatar for THE Water Heater Company
THE Water Heater Company
4.9(
134
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Simi Valley, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Our sixteen year old water heater was leaking gas. My husband called The Water Heater Company who quoted for exactly what repairs were needed. The telephone representative who helped us requested photos of the water heater. He could tell what items were needed to bring the new water heater up to code. We were very pleased that Tony, the water heater installer, was scheduled to come the next day! Tony was punctual, thorough and answered all the questions I had. He explained everything that was done and made suggestions for other improvements we might want to have done. Everyone was very professional and very honest from beginning to end. They also use the very best water heaters with great warranties. Much higher quality than you can get at Home Depot or Lowes. We are very excited to recommend Tony and The Water Heater Company!"
Van (Side view)
TWHC Vans
TWHC Vans
TWHC Vans
TWHC Vans

+83

Response time7 hrs
Response rate92%
Recommended by84%of homeowners
Avatar for Chajon Plumbing
Chajon Plumbing
4.9(
52
)
Tankless Water Heater - RepairWater Heater - Repair or Service

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Ok so this man Giovanni is a rare find. Read his reviews they are real reviews. I had a problem no hot water and we had a new tankless hot water heater put in 9 months ago. So did some research and as soon as I read Giovanniâ s reviews I stopped searching. The review of the son being concerned that Giovanni was going to take advantage of his older mother is the main review that sold me. So this is what happen, I called and spoke to Giovanni around noon. He was going to squeeze me in around 2:30. He had other appointments. So around 1:30 a friend can to my house and I told her about the hot water so she said let me see. She started going into settings and with a few clicks it started working. I then sent Giovanni a text telling him what took place. He called me I told him what my friend did and walked him through the steps. He said all was good except to take off always running and put on intelligent, which I did. So now the next day I get home from work turned on hot water and just warm after 5/6 minutes of running. So thinking there was still the problem I text Giovanni and ask if he could come and look at it either today or tomorrow told him about the warm water. He then text me back saying that the intelligent needs to relearn when we use water. He also told me to turn on hot water in few different places in the home. And yes he was right the water got hot very hot. It just needs to relearn when we use hot water. I have paid this man nothing, he talk me out of having him come to my house because he doesnâ t feel there is a need for him. He told me it could take a week to learn, and if I did have problems to call him back. WHAT A GREAT GUY. I kinda hope it does break just to meet this incredible man. THANK YOU GIOVANNI. Need to update this review because I did have him come to my house for a feew liitle things. He quoted my $1,595.00 for 3 didderent fixed. The reason why I am writing this is because after he started the work he realize that one of the issue I had didn't need as much work as he first thought. He removed $400.00 from my bill. He could have said nothing because the issue was in the craw space and I would have nevered known. That is a really great guy and an incredible plumber without a doubt. Would refer him to anyone and everyone!"
Before and after
Before and after
Before and after
You always have to Check for leaks
Start at the foundation to build up something

+17

Response time20 mins
Response rate95%
1 neighbors recently requested a quote
Avatar for Camarillo Rooter, LLC
Camarillo Rooter, LLC
5.0(
16
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessWater Heater - Install or Replace+1 more

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Lonnie is an awesome plumber! When I first got my house he installed new water valves for my washer. Just recently he came to repair my water heater because it was leaking. He noticed I still had warranty on my water heater. Any other plumber probably would have charged me for a new one. I really appreciate his honesty. I would definitely recommend his services"
Recommended by78%of homeowners
Avatar for R R Electric Heating & Air
R R Electric Heating & Air
4.8(
17
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Repair+1 more

Serving Simi Valley, CA and surrounding areas

Approved

In business since 1994

Credit card accepted

Customers say: Quick response

"Hector was very knowledgeable and professional. They responded quickly to my request, gave me s bid on the spot and showed up on time when the waterheater installation began. I was pleased with the quality of the work. Highly recommended."
Response time2 hrs
13 neighbors recently requested a quote
Recommended by66%of homeowners
Jaxael S Rizo
5.0(
11
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessWater Heater - Install or Replace+2 more

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I would highly recommend this business for anyone that is looking for an honest person to fix your plumbing problems. Iâ  ve hired other plumbers in the past, and let me tell you, I have always been left disappointed. Mr. Rizo is very knowledgeable about what he does. I canâ  t thank him enough for taking care of my home!! Thank you!!"
Frizzlife Tankless Reverse Osmosis System
MOEN Flo Smart Water Monitor Automatic Shut Off
Frizzlife Tankless Reverse Osmosis System
Clients Old Shut Off Valve
Frizzlife Tankless Reverse Osmosis System

+16

Response time20 mins
Response rate100%
Recommended by90%of homeowners
Avatar for Stowell Plumbing LLC
Stowell Plumbing LLC
5.0(
11
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+1 more

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2024

Emergency services offered

Credit card accepted

Stowell Plumbing is a family-owned, veteran operated plumbing company in Thousand Oaks, CA, serving Westlake Village, Simi Valley, and nearby areas. We help homeowners and small businesses with emergency plumbing, drain cleaning, hydro jetting, and main line clogs, plus water heater repair, installation and replacement, and everyday fixture repairs like toilets, faucets, showers, and garbage disposals. Whether you need urgent help or a planned upgrade, you’ll get clear communication, respectful service, and clean workmanship from licensed plumbers who do the job right

Gallery
Gallery
Gallery
14 neighbors recently requested a quote
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Water Heaters FAQs, answered by experts

Professional installs conclude in mere hours, with complexity differences possibly prolonging efforts slightly. Site condition often dictates the exact duration.

Traditional gas or electric water heaters last an average of six to 11 years. However, with excellent maintenance, they can last up to 15 years. Heat pump water heaters, on the other hand, last an average of between 12 and 15 years and potentially longer with proper maintenance. In both cases, your home's water quality can be a determining factor regarding the lifespan of your water heater.

Several signs indicate your water heater may be failing or in need of replacement. Key indicators include:

  • Age: A water heater older than ten years is approaching the end of its typical lifespan.

  • Water Quality: If you notice rusty or discolored water from your hot water faucets, or a foul odor similar to rotten eggs or sulfur, it can signal internal corrosion.

  • Unusual Noises: Banging, rumbling, or popping sounds from the tank often mean sediment has built up, causing the unit to overheat.

  • Leaks: Any water pooling around the base of the tank or visible leaks are clear signs of failure.

  • Performance Issues: A decline in performance, such as water not getting hot enough, taking longer to heat up, low water pressure, or decreased efficiency, suggests the unit is struggling.

  • Visible Damage: Obvious rust and corrosion on the exterior of the tank can indicate a more serious internal problem.

While these signs often point to replacement, some issues may be fixable. It's best to consult a professional plumber to diagnose the problem before investing in a new unit.

Homeowners insurance may cover the repair or replacement of a water heater if it's damaged by a covered peril, such as a fire or a burst pipe. However, policies typically do not cover repairs or replacement needed due to normal wear and tear, old age, or lack of maintenance. For these issues, a home warranty or a manufacturer's warranty may provide coverage. While the policy might not pay to fix or replace the malfunctioning appliance itself, it often covers the cost of water damage restoration caused by the faulty water heater. Always check with your insurance provider to understand the specifics of your policy.

The standard copper wire gauge to use with any 30-amp circuit is a 10-gauge wire. The National Electric Code specifies a 10-gauge wire with appliances like water heaters running on 30 amps. If you try to use a smaller gauge wire, such as a 12 gauge, with a 30-amp breaker, you run the risk of the wire overheating and melting or causing a fire. Because of the safety hazards, the gauge of the wire is not an area to try to cut costs when connecting a 30-amp breaker to a water heater.

The Simi Valley, CA homeowners’ guide to water heater services

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