Tankless Water Heater Experts in Fresno
Tankless water heaters — also called on-demand or instantaneous water heaters — heat water only when you need it, eliminating standby heat loss and providing a virtually endless supply of hot water. Stedman's Plumbing is a Navien Service Specialist and is certified to install, service, and warranty Navien, Rinnai, and other major tankless brands throughout Fresno and the Central Valley.
Whether you're upgrading from a traditional tank water heater or replacing an existing tankless unit, our licensed plumbers provide expert installation and service backed by manufacturer warranties and our own satisfaction guarantee.
Gas vs. Electric Tankless: Which Is Right for You?
Gas tankless water heaters are the most popular choice in Fresno — they deliver high flow rates (5–11+ GPM) and are well-suited for whole-home applications. Electric tankless units work well for point-of-use applications (a single sink or bathroom) but typically can't meet the demand of an entire home without significant electrical upgrades.
Whole-Home Tankless Sizing Guide
- Up to 2 bathrooms: 140,000–150,000 BTU unit (e.g., Navien NPE-150S)
- 2–3 bathrooms: 150,000–180,000 BTU unit
- 3+ bathrooms / large homes: 180,000–199,000 BTU or dual-unit system
Tankless Water Heater Maintenance
Annual descaling (flushing with white vinegar or citric acid solution) is recommended for Fresno's hard water conditions — it prevents mineral buildup on the heat exchanger and maintains efficiency. Our technicians offer maintenance plans to keep your tankless unit running at peak performance year after year.
✓ Advantages
- Endless hot water — no running out mid-shower
- Up to 40% more energy efficient than tank models
- Space-saving wall-mount design
- 20+ year lifespan with proper maintenance
- Lower risk of catastrophic tank failure/flooding
- Fresno utility rebates may apply
✗ Considerations
- Higher upfront cost than tank water heaters
- May require gas line upgrade (3/4" to 1" gas line common)
- Activation delay — slight lag before hot water arrives
- Hard water requires annual descaling
- Not ideal for simultaneous high-demand use without proper sizing
⚠ Signs You Need Service Now
- Error codes displayed on unit (note code and call us)
- Water temperature fluctuates during use (cold water sandwich)
- Unit ignites but doesn't maintain temperature
- Reduced flow rate or weak pressure from hot water taps
- White mineral deposits visible on the unit
- Unit hasn't been descaled in over a year in Fresno's hard water
Certified Brands We Install & Service
