Tankless Water Heater Installation

On- Demand Tankless Water Heaters, Repair & Installation, San Diego | Big B's Plumbing

Tankless water heaters or on-demand water heaters provide hot water almost instantly. As a result, water is heated when needed, eliminating the need for a storage tank. Additionally, you'll experience reduced water loss because you're not waiting for the water to heat up. Another benefit is the life expectancy of an on-demand water heater, which is 20 years or more. In comparison, a storage tank heater can last 8–12 years. Additional benefits include the elimination of tank leaks.

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Hot Water When You Want It

Your tankless heater starts to work the moment you turn it on, and cold water is drawn through the pipe into the unit. Inside the unit is a gas burner or an electric heating element, depending on what your home uses. Based on the size of your on-demand water heater, it can produce 2 - 5 gallons of hot water per minute. Of course, the size of your water heater will depend on your family size, how often showers are taken, along with appliance usage. At Big B's Plumbing, we have tankless on-demand water heater technicians that will help you calculate the proper size of the right water heater for your family and home.

Save BIG on Tankless On-Demand Water Heaters

Your on-demand water heater usually gets installed where the storage heater previously existed, taking up 75% less space. According to the Environmental Protection Agency (EPA), Energy Star-certified on-demand tankless water heaters could save a consumer up to $1800 over the product's lifetime compared to a storage tank heater. In addition, the Energy Star label ensures the consumer that their product has been tested for energy efficiency, emissions, pollutants, and greenhouse gases.

Make Big B's Plumbing Your First Choice

At Big B's Plumbing, we are certified dealers in sales and service for Noritz®, Navien®, and Bradford White. Additionally, we are certified to repair and service Rheem® tankless water heaters. We have an A+ rating with the Better Business Bureau (BBB). Furthermore, we have 4.9 to 5 stars on Facebook, Yelp, and Google Plus, making Big B's Plumbing your first choice. Serving Escondido, San Marcos, Bonsall, Valley Center, Vista, Rancho Bernardo, Oceanside, and Carlsbad, get the service and experience you deserve.


Brandon and Family, Licensed plumbing contractor

Family Owned & Operated

My name is Brandon Mageno. I'm the founder, President, and CEO of Big B's Plumbing Company. As the founder, I never thought about being average or good. My passion for being the best plumbing company in Southern California has always been the same. Providing plumbing services to this great county is simply in my DNA. Nothing makes me happier than to see a satisfied customer. Learn More About Us

Let's Get a Snap Shot of the Pros and Cons

Tankless water heaters, also known as on-demand water heaters, provide hot water without the need for a storage tank. While they have some advantages over traditional tank-style water heaters, they also have some disadvantages. Here are the pros and cons of an on-demand tankless water heater:


  1. Energy efficiency: Tankless on-demand water heaters will only heat the water whenever needed, which means they use much less energy than storage tank-style water heaters. This can result in lower utility bills and a reduced environmental footprint.
  2. Space-saving: Tankless heaters use less space than traditional water heaters, as they do not need a large storage tank. They can be mounted on a wall, freeing up floor space in your home.
  3. Longer lifespan: Tankless water heaters have a longer lifespan than traditional water heaters. They can last up to 20 years or more, which is twice the years of a traditional water heater.
  4. Continuous hot water: Tankless heaters provide hot water on demand as long as you have a consistent cold water supply. This means you won't run out of hot water during a shower or bath.


  1. Higher upfront cost: Tankless water heaters can be more expensive to purchase and install than traditional water heaters. This can be a significant barrier for some homeowners, particularly those on a tight budget.
  2. Limited flow rate: Tankless water heaters may have a lower flow rate than traditional water heaters. This means that if you have multiple people using hot water at the same time, you may experience a drop in water pressure.
  3. Complex installation: Tankless water heaters require professional installation, which can be more complex than installing a traditional water heater. This can increase the cost of installation.
  4. Maintenance requirements: On-Demand tankless water heaters need regular maintenance to ensure they continue to function properly. This includes flushing the system to remove hard water mineral buildup, which can be time-consuming and costly.

Overall, tankless water heaters can be a good option for homeowners looking to save energy and space. However, they can be more expensive upfront and may have limitations in terms of flow rate and maintenance requirements.

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Big B's Plumbing Supports NAVIAN® On-Demand Tankless Water Heaters

Navien is a popular brand of tankless water heaters known for its high-quality and innovative features. Here are some of the factors that set Navien tankless water heaters apart from the rest:

  1. Efficiency: Navien tankless water heaters are known for their energy efficiency. They use condensing technology to extract heat from exhaust gases, which reduces energy waste and improves efficiency. Navien tankless water heaters also have a high Energy Factor (EF) rating, which means they use less energy than other models.
  2. Technology: Navien tankless water heaters incorporate advanced technology, such as a built-in recirculation system, Wi-Fi connectivity, and smart controls. The built-in recirculation system ensures that hot water is always available on demand, while Wi-Fi connectivity and smart controls allow users to monitor and adjust settings remotely.
  3. Durability: Navien tankless water heaters are built to last. They are constructed with high-quality materials and designed to withstand the wear and tear of daily use. Navien tankless water heaters also come with long warranties, providing homeowners peace of mind.
  4. Installation: Navien tankless water heaters are easy to install and can be fitted into small spaces. They also have various venting options, making installation flexible and easy.
  5. Customer support: Navien provides excellent customer support, including online resources, phone support, and Big B's Plumbing is part of a network of certified trained technicians. This ensures that customers can get the help they need if they experience any issues with their tankless water heater.

Overall, Navien tankless water heaters are known for being energy efficient, having the latest technology, durability, being easy for technicians to install, and having great customer support. These factors make Navien a popular choice for homeowners looking for a high-quality tankless water heater.

What People Are Saying...

I called Big B's Plumbing because I the hot water would not turn off in our master bathroom. I tried to turn the valve off under the sink and it broke off, so I had to shut off the main water to the house. It was noticeable the valves were original to the home. When I called, the rep stated that I would be informed about the service tech and their experience along with services offered "On The Spot". I was on a bit of a time crunch...
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Vill M

Found them on Google and they had good quality reviews. Made the call and set up the appointment for same day. Dispatch called me a few hours later to confirm our appointment and let me know that the technician Mathew was on the way. This was supposed to be an easy job once Mathew arrived. But it turned out to be so much more than that. Without hesitation or a sour look on his face, he dove deep into his van...
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Jeremy T

Randy was very knowledgeable and professional. He helped us figure out what we could do with the space given for our bathroom with our remodel. He picked out perfect fixtures and the work he did was beautiful. The cleaned up properly when they were done and everything was handled in one day! I will be calling for Randy anytime we have any plumbing needs. Thank you for doing such a great job!
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Crystal M

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