Navien tankless water heater in California
Last updated: September 24, 2026
WaterHeater Pros is dedicated to serving the diverse communities across California, from the vibrant metropolises of San Diego, San Jose, and Irvine to the extensive suburban landscapes of Santa Clarita, Modesto, and Huntington Beach. The state's generally mild climate, punctuated by periods of drought and occasional intense rainfall, influences water usage patterns and the need for reliable, water-efficient heating solutions.
Choose your city
California's varied housing stock, ranging from dense urban apartment buildings to sprawling single-family homes, presents unique installation considerations for Navien tankless water heaters. Permitting and local building codes, often stringent in densely populated areas like those surrounding San Jose and San Diego, necessitate precise adherence to safety and efficiency standards. Our team is well-versed in these regulations, ensuring that every installation is compliant and optimized for performance, whether it's a direct vent system or a complex manifold setup for larger properties.
Common questions
What is the downside to tankless water heaters?
While Navien tankless water heaters offer substantial advantages in energy efficiency and continuous hot water supply, a potential downside is the initial capital expenditure compared to traditional tank models. Additionally, some older homes in areas like Modesto may require upgrades to their gas lines or electrical systems to adequately support the demands of these advanced units.
Can you run two showers with a tankless water heater?
The ability of a Navien tankless water heater to supply hot water to two showers concurrently is determined by its Gallons Per Minute (GPM) output and the temperature rise required. In warmer California climates, where incoming water temperatures are higher, a unit with a moderate GPM rating may suffice. However, for consistent performance, especially in cooler months or with high-flow showerheads, a higher GPM model is advisable.
How long do hot water heaters typically last?
The lifespan of a water heater is significantly impacted by the quality of maintenance and the specific environmental conditions. Standard tank water heaters generally operate for 8 to 12 years. Conversely, Navien tankless water heaters, known for their robust construction and advanced technology, can often provide reliable service for over 20 years when installed and maintained in accordance with California plumbing codes and manufacturer guidelines.
What is the average cost of putting in a water heater?
The total expense associated with installing a water heater is multifaceted, encompassing the chosen unit's specifications, the complexity of the existing plumbing and venting architecture, and any required modifications to essential utilities. We offer a complimentary phone consultation to thoroughly evaluate your specific requirements in your California residence and provide a precise, itemized estimate.
What is the most efficient type of water heater?
Condensing Navien tankless water heaters stand out as the most energy-efficient option currently available. By utilizing a secondary heat exchanger to capture residual heat from exhaust gases, these units significantly reduce energy consumption and operational expenditures, making them an excellent choice for environmentally conscious homeowners in locations like Irvine and Huntington Beach.
Can you run two showers with a tankless water heater?
Simultaneously operating two showers with a Navien tankless water heater is achievable provided the unit's Gallons Per Minute (GPM) rating meets the combined demand. In warmer California regions, the incoming water temperature is higher, allowing a lower GPM unit to potentially satisfy this need. However, it is crucial to consult specifications to ensure adequate flow and consistent temperature for all fixtures.
Useful reference: DOE water heating — efficiency and sizing.