Honest Reliable Fremont Water Heater Service

Over 1.2 Million Water Heaters Service & Counting, Since 1968

Rated 4.8 Out Of 5 Stars

Water Heaters Only Best 5-Star-Reviewed

Based On 5,850 Reviews

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(510) 791-2455

Residential – Apartments – Commercial – Tankless

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Celebrating OVER 55 Years in Business 1968-2023

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

Lowest Prices

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

5 Star Customer Rated

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

500,000+ Satisfied Customers

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

Expert Customer Service 24/7/365

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

Licensed & Insured, Since 1968

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

Residential, Commercial, Tankless

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

Quick, Friendly Service

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

Beat Any Written Competitor Bid

Water Heaters Only Inc Fremont Rated 5 stars The WHO Advantage

No Extra: Evenings, Weekends & Holidays

Water Heaters Only, Inc (510) 791-2455 – Phones Answered 24/7/365

Water Heaters Only, Inc. is a full-service water heater repair, replacement, and installation company. Since 1968, we have served the communities of Fremont, Hayward, Union City, Castro Valley, Newark and the surrounding area. Water Heaters Only, Inc specializes in residential and commercial gas and electric, tankless gas, and heat pump water heaters. Call us 24/7/365 if you need a quick water heater installation or a fast water heater repair.

Water Heaters Only, Inc is licensed, insured, and able to arrive at your home, the same day, in a professional work van, fully stocked with quality water heaters and parts. We specialize in all aspects of the water heater repair and replacement process. We guarantee the greatest quality of work at the most affordable prices. Our many years of water heater knowledge, combined with the use of high-quality supplies and pride in our work, keeps our valued customers coming back for all of their water heater needs.

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We Answer Our Phones 24/7/365 – Call Now To Speak With A Water Heater Expert Or To Schedule Service

Up-Front Pricing

Exact Pricing Quoted Up Front In The Home Based On The Actual Work Required To Properly Install A Water Heater

Lowest Prices

Lowest Prices On Water Heaters Replacements Since 1968. Our Bids Are Generally $100 Less Than Our Competitors

Tankless Water Heaters

Water Heaters Only, Inc. Are The Tankless Water Heater Experts, Call Now To Discuss Options For Your Home

Happy Fremont water Heaters Only Customers (3)
Happy Fremont water Heaters Only Customers (1)
Happy Fremont water Heaters Only Customers (2)

Our Service Is Rated 4.8 Out Of 5 Stars Over 5,850 Reviews Read Our Customer Reviews – Click Here!

Raghu ViswanathanRaghu Viswanathan
23:15 28 May 23
Luke did an outstanding job replacing our water heater. He was on time, very professional and did a great job! This appointment happened in less than 24 hours and I'm grateful for the help.
Jim FangJim Fang
07:35 24 Nov 22
Review only from calling: After calling ~19 different services in the area Water Heaters Only was one of the 2 companies that provided a rough ballpark price over the phone (extremely helpful!) and offered to come out the next day. They are partnered with a water heater brand which seems to make getting one in an emergency easier. Price is acceptable.
Simone EveSimone Eve
22:23 15 Oct 22
The team was super quick and easy to work with. Hopefully I won’t have to call them for another 15 years.
Sean SkeenSean Skeen
20:06 13 Sep 22
WHO, that’s right, Water Heaters Only, that’s who! Called them at 0600hrs to replace a specialty water heater, Mo Tau was at my home 0915hrs and did all of the installation by noon. If you want it done now, and you want it done right, who ya gonna call…Water Heaters Only that’s WHO!!
Antoinette GoodmanAntoinette Goodman
21:25 15 Aug 22
We had a good experience with WaterHeatersOnly.Technician Doniel is very professional. Thank you so much.
Albert GutésAlbert Gutés
22:17 11 Jul 22
We found ourselves with a 15+ year old water tank giving us some trouble so it was time to change it. We called Water Heaters Only because of the outstanding reviews we found everywhere and in a matter of a few minutes we had an appointment for the following day (the person who answer the phone (Andy? can't remember) was very professional).The following day Doniel came very punctually, and after a few minutes of conversation we agreed on replacing the tank. He was very knowledgeable, clear on what and why needed to be done, and replaced our tank in less than 2 hours. We had a baby sleeping in the house through the whole process so I guess he was also as quiet as one can be with this type of heavy work.I am very pleased with the job done by Doniel and the overall service of Water Heaters Only. Will definitely recommend !
Sheila IgneSheila Igne
20:55 23 Jun 22
When I initially called on a weekend Sunday afternoon, your office was so kind and patient to assist me. I needed that while I was hysterical and in complete panic.It is rare I allow an outside contractor into my home.Loni replaced my water heater on Monday, June 20. To date, all is well.Loni is top notch.When I asked, he very distinctly explained options for a water heater for my home in simple terms for me so that I could comprehend benefits and disadvantages of the various options (sizes/tankless).All before replacing my collapsed water heater.I need to add that Loni advertises professionalism and competence for your company each time he rings a client's bell for service.I will be posting my appreciation on social media.I absolutely recommend waterheatersonly.
13:51 12 Jun 22
We have 2 50gallon water heaters on our property.Lucas provided the removal and installation for both on two different dates.The first water heater was urgent since the old water heater pilot assembly failed.The second water heater we chose to call back Water Heaters only due to satisfaction of the first installation (also the old units were 10 years old).Lucas provided professional and excellent service on both occasions.Working with Water Heaters only is simple and professional.Thank youJeff
Aliyah WalkerAliyah Walker
19:11 21 Feb 22
I had a great experience getting our water heater fully replaced quickly. It stopped working one morning. They were able to come the next morning and it was quickly installed and back working(9:50-12:50). I highly recommend it. Mack Williams was the technician. He was very professional. I really appreciate he explained the benefits of tankless vs traditional water heater. He also explained the steps of the installation process and left the area better than he found it.-Darryl Walker
Lee HolmLee Holm
18:05 10 Jan 22
Water Heaters Only has great customer service. From the first phone call to schedule the appointment to the completion of the installation, everyone I was in contact with was friendly and professional. The technician, Loni, arrived on time and my new water heater was up and running perfectly within two hours.
Melody Fielder WongMelody Fielder Wong
17:04 21 Oct 21
Our water heater just quit working after 14+ years of service - - right before we were to have a house full of guests. I called on Monday evening at about 5:30 and was able to get an appointment for service on Tuesday 9 to 12. I work from home, so this window worked fine. John A. arrived during that window and was professional and polite. He asked what we wanted done and then gave us a quote. John explained what work was included in the quote and how long the work would take. We found the quote to reasonable. Two hours later we had a new water heater and were very pleased with the work that had been done. The work area was clean and tidy and we are very pleased. We highly recommend Water Heaters Only, Inc.
Mary SouzaMary Souza
17:43 09 Jun 21
15+ yo water heater quietly quit. Friends recommended WHO, so I called and received an estimate on new unit and realistic time frame for service. John A. was EXCELLENT. He assessed the situation, explained everything clearly and in great detail. He tried a successful, temporary work-around, but I agreed it was time for a new unit. Installation was accomplished earlier in the day than promised .... and.... for the LOW estimate. When does that ever happen? I highly recommend this business and John A's super service.
Warren ShimizuWarren Shimizu
02:37 26 Jul 18
My water heater broke on 7/24/18. Benny showed up within the 4 hour window. He assessed the water heater and gave me my options. He replaced my water heater. Left the area clean. Very happy with the end result. Definitely will recommend! Warren
Bryan ShandyBryan Shandy
21:09 11 Dec 16
My leaky water heater decided it was time to go on Thanksgiving Day this year and it was quite the inconvenience. I did some research and then called Water Heaters Only on Friday after reading good reviews. They quoted me replacement costs for both a tank and tank less installation and i decided to just replace my tank. I figured it was not an emergency since i still had water. so i said anytime before Tuesday would be fine. They were able to get someone out the next morning. Toa was the technician and he was great. Professional, informative and very pleasant. They didn't try to sell me anything i didn't need. Compared to a big box store i had come out and quote me when it first started leaking, these guys were almost half the price. Great Job and Thank you
Dale BauerDale Bauer
16:51 12 Nov 16
Excellent customer service - Competitive price - Quality work! Obviously when you need a new water heater you need it NOW but it is not a regular purchase so who to call & what price to expect can be very stressful. 1st call confirmed that it was probably going to be another bad "contractor" experience of being taken advantage of with the "take it or leave it" attitude. 2nd call to Water Heaters Only and immediately felt like a "customer". Paul provided immediate quote / estimate and arranged for installation to be completed the next morning. Everything was done as advertised at a very fair price. Can a new water heater be a beautiful thing? Yes it can...Great Job!
Canice McLaughlinCanice McLaughlin
19:51 02 Jun 15
Steve replaced our 17 year old water heater on May 28, 2015. We were able to get a same day appointment because of a cancellation. Steve called to say when he would arrive, and he was prompt. He answered my questions, worked efficiently, and filled up some buckets with water that had to be drained from the old tank. Water Heaters Only installed our water heater in1998, and it lasted a long time so we knew they had a quality product. When we called them last week, everyone was friendly, easy to work with, and very knowledgeable about the product. I highly recommend this company for offering very good service at a competitive price.
Jack ChenJack Chen
07:13 24 Mar 15
I have been shopping around to find a company that will replace my water heater at a reasonable price, I found Water Heaters Only, Inc. provided the most reasonable price. My water heater installer Loni came at the time promised to provide an estimate. He was very patient and provided the pros and cons of installing tankless vs. tank water heater. When I decided to go with the tank water heater, he provided prices for three different models with different capacities and different energy efficient factors. Loni then left and leaving me to think about it and make my own decision. No pressure at all. I felt very comfortable and 3 days later I called to make the appointment to have my new water heater installed. On the day of installation 3/13/15, Loni took less than 2 hours to finish the job and performed all the modifications exactly as he predicted. No extra charges and he finished the job professionally and everything worked exactly the way I imagined. Great job Water Heaters Only Inc. I would definitely use their services again and would recommend this company to anyone.
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