Tankless Water Heater Installation and Repair in San Francisco
When it comes to modern plumbing upgrades, few options are smarter or more efficient than a tankless water heater. At Discount Plumbing Rooter Services, we install, repair, and maintain tankless water heaters across San Francisco and San Mateo County, helping homeowners enjoy endless hot water while saving on energy bills.
What Are Tankless Water Heaters?
Unlike traditional water heaters that store and heat a large tank of water, tankless systems heat water on demand. Cold water passes through a heat exchanger, powered by gas or electricity, to deliver hot water instantly whenever you need it. That means no bulky storage tank, no standby heat loss, and no running out of hot water mid-shower.
Our licensed plumbers can install and service all major brands of tankless water heaters, including Rheem, Rinnai, Navien, Noritz, and Takagi, and we’ll help you choose the perfect system for your home and budget.
Why Upgrade to a Tankless Water Heater?
- Lower Energy Costs - Tankless water heaters can be up to 34% more energy-efficient than traditional tanks, according to the U.S. Department of Energy. This is especially true for homes with lower daily water usage.
- Longer Lifespan - With proper maintenance, tankless systems can last 20–30 years, nearly double the lifespan of a traditional water heater.
- Compact Design - No more bulky tanks! Tankless systems mount neatly on a wall, saving valuable space in smaller Bay Area homes
- Endless Hot Water - Tankless units heat water as it flows, providing an uninterrupted supply of hot water whenever you need it.
Tankless Water Heater Maintenance
Regular maintenance keeps your system efficient, safe, and long-lasting. Our professional maintenance services include:
- Flushing and descaling the heat exchanger to remove mineral buildup
- Cleaning the fan, burner assembly, and water filter
- Inspecting the igniter, flame sensor, and vent system
- Testing water flow rate and temperature settings
- Checking gas pressure and system safety components
We recommend annual service (or twice a year) if you have hard water or high water temperatures.
Why Choose Discount Plumbing for Your Water Heater Services?
- 30+ Years of Plumbing Experience
- Licensed, Insured, & Factory-Trained Technicians
- Energy-Efficient Installation & Service
- Flat-Rate Pricing & Free Estimates
- 24/7 Emergency Service Available
We pride ourselves on helping homeowners make smart, lasting upgrades that save money and reduce waste.
What Our Customers Say About Us
EXCELLENT Based on 433 reviews Posted on Olivier BoivinTrustindex verifies that the original source of the review is Google. Great service from Ricardo, very friendly and helpful!Posted on Caiyong ChenTrustindex verifies that the original source of the review is Google. Ricardo is very outstanding. Fast workPosted on Morgan ByrneTrustindex verifies that the original source of the review is Google. Javier and Ricardo did an amazing job! Our hot water line to the washing machine wasn’t working and they worked quickly and efficiently to fix the problem even having to move a heavy washer/dryer from a small closet to access the lines. Ricardo even came back out the next day to check on when we noticed condensation from the machines and wanted to make sure there was no leak.Posted on Rebecca LazarusTrustindex verifies that the original source of the review is Google. Ricardo was awesome. Prompt, professional and got our drain unclogged in no time. Now that I have his card I won’t call anyone else when I need plumbing help.Posted on Ricquel FordTrustindex verifies that the original source of the review is Google. I called Discount Plumbing for help with my toilet, and they sent Ricardo. Honestly, he was the best! Not only did he take care of the toilet, but he also looked at everything else just to make sure things were good. He showed up in a decent time, was 100% transparent with estimates and next steps,and has great music taste.Highly recommend Ricardo!Posted on Racquel CelestialTrustindex verifies that the original source of the review is Google. Ricardo was great!! Solve my clogged laundry drain. Thanks so much!Posted on CynthiaTrustindex verifies that the original source of the review is Google. Ricardo came to my home within hours of contacting him to fix a leaking toilet. He replaced the wax ring, discovered that the main supply line was cracked, and took care of that as well. He even used a camera to show me the condition of the pipes and recommended descaling since they’re cast iron from the 1960s. We went ahead with the descaling to help clear them out and prevent future issues and offered a two year warranty. He also reached out to a restoration service to come assess the water damage. I really appreciated his help, attentiveness, and the time he took to walk me through everything.Posted on Erin LiTrustindex verifies that the original source of the review is Google. Ricardo was helpful, professional and quickly diagnosed our issue with a jammed garbage disposal. It was easy to schedule a same day appointment and he arrived on time. Would definitely use again.Posted on Paul YTrustindex verifies that the original source of the review is Google. Ricardo D. from Discount Plumbing was fantastic! He quickly found the leak, fixed it efficiently, and was both knowledgeable and professional throughout. Highly recommend him for any plumbing needs!Posted on H KimTrustindex verifies that the original source of the review is Google. Ricardo was fabulous! Our pipes burst in the kitchen and water was everywhere. He spent three hours fixing the problem with great professionalism and better humor. If you have a plumbing problem, do yourself a favor and call Discount Plumbers and ask for Ricardo! Seriously. Ricardo was amazing!
Upgrade to Tankless Hot Water Today
Enjoy endless hot water, lower energy bills, and peace of mind.