Water Heaters Only
Company Overview
Water Heaters Only, Inc offers complete solutions for water heater repair, replacement, and installation. We provide services for residential, commercial, and tankless water heaters. Established in 1968, we have focused exclusively on water heaters for over fifty years. Our focus on customer satisfaction, caring for our clients, and offering competitive prices has led to decades of loyal customers. All our services come with a guarantee, and we support the warranty for the products we install, including residential gas and electric water heaters, tankless systems, commercial units, and hybrid models. We take pride in having served over 500,000 satisfied customers and will match any competitor's written estimate on-site. Contact us 24/7 for same-day service, competitive pricing, and exceptional customer support. We have experts on hand during nights, weekends, and holidays at no additional cost. Competitive Prices, Quick Response, Licensed & Insured Since 1968! Focusing on: South San Francisco Water Heater Replacement | Water Heater Installation | Hot Water Heaters in South San Francisco | Tankless Water Heaters | Replacements for Commercial Water Heaters | Apartment Water Heaters | Water Heaters for South San Francisco Restaurants | Repair for Gas Water Heaters.
Our founder saw in 1968 that there were no businesses dedicated to water heater services. The vision he created involved training technicians to excel by focusing exclusively on water heaters. They were given trucks that met their needs, fully stocked with every part required for optimal installation or repair. This approach offered a level of service never before seen in water heater repair or replacement. Our phones were answered by real, skilled individuals around the clock, every day of the year. More than fifty years later, we still answer calls 24/7 and do not impose extra charges for evening or weekend service. Licensed and Insured Since 1968!
At Water Heaters Only, Inc, we genuinely care for our customers, and our primary goal is to simplify the water heater replacement process. We understand that problems with water heaters can be unforeseen and stressful. Managing a leaking or malfunctioning unit can increase stress in any scenario. Our water heater professionals are available around the clock to help you manage a leaking tank, address safety issues, and schedule service at your convenience, without additional charges for evening or weekend visits.
At Water Heaters Only, Inc, we support our customers before, during, and after any water heater issue. Since our founding in 1968, we have handled over 1.2 million water heater replacements and services. We sincerely appreciate all our customers and remember: The Crew From W.H.O. Can Do!
Business Services
- Hot water recirculation pump installation
- Hot water recirculation pump repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Water heater installation
- Water heater repair
Business Location & Hours
Mon: | Open 24 hours |
Tue: | Open 24 hours |
Wed: | Open 24 hours |
Thu: | Open 24 hours |
Fri: | Open 24 hours |
Sat: | Open 24 hours |
Sun: | Open 24 hours |
Recommended Customer Reviews

The technician (Steve) arrived on time and was very professional. He explained what he was going to do, gave me an estimate, and within a few minutes was at work replacing my water heater. His work was meticulous, job well done!

Loni was the tech that serviced our house. He was quite professional and took all the necessary safety measures during covid (mask, gloves, distance). We had a 20 year old water heater that needed to be replaced. He was on time and got straight to work. Didn't try to upsell or anything and got the job done fast (less than 1.5 hours). Not sure what else you want from a company. If we needed a different system, I would feel comfortable trusting his recommendations.

Doniel was our Technician, he is the BEST! He came to our with a mask on and worked 3-1/2 to replace our water heater. This is the finished product! Our new water heater!
I highly recommend Doniel. We gave him a 5 star eell deserved.
Thank you, to both Valerie and Doniel for all your help today you saved