New installations
Understand the work involved in converting from a tank, including plumbing and venting changes.
Tankless water heaters
Tankless Water Heater
Installation & Repair
Tankless installation, repair, and replacement options for your home. Service from a local specialist with Navien Level 2 & 3 training.
Licensed contractor CSLB #1150297
Navien certified Level 2 & 3 training
Local service Three Bay Area counties
Start with the right system, not just a smaller footprint.
Tankless performance depends on your simultaneous hot-water demand and installation. Reliant assesses the location, fuel supply, venting, and water conditions before recommending a system.
Replacement
Review the existing equipment and installation to choose a suitable replacement.
Troubleshooting
Discuss error codes, temperature changes, and hot-water interruptions with a water-heater specialist.
MANUFACTURER TRAINING. HANDS-ON EXPERIENCE.
Navien certified.
Ready for your home.
Reliant’s installer completed Navien Level 2 & 3 training in installation, operation, and service on August 20, 2026.
- Navien installation, operation & service training
- Tankless installation and troubleshooting
- California CSLB #1150297
NAVIENLEVEL 2 & 3Installation.
Installation.
Operation.
Service.
Training completed August 2026
View certificate of completionQUESTIONS & SOLUTIONS
Your concerns. A clear next step.
Can I switch from a tank to tankless?
Reliant reviews your hot-water demand, available space, fuel supply, and venting, then explains the changes needed and provides an installation estimate.
My tankless heater shows an error code. Can you help?
Send the model, error code, and a description of what’s happening. Reliant reviews your equipment and discusses troubleshooting and service options for your model.
Which tankless system is right for my home?
Reliant reviews how many fixtures you use at once and the installation requirements to recommend a system suited to your household.
A CLEAR NEXT STEP
From first call to finished installation.
01 / GET IN TOUCH
Tell Reliant what’s happening
Call or text with your city, your concern, and photos of the existing system.
02 / REVIEW YOUR OPTIONS
Understand the work
Discuss the recommended solution, installation requirements, and estimate.
03 / SCHEDULE SERVICE
Get it taken care of
Confirm an appointment and the agreed scope for your home.
LOCAL TO YOUR HOME
Three counties. One trusted contact.
Water heater and filtration service in Marin, Sonoma, and San Mateo counties.
Call or text to confirm availability at your address.
CALL OR TEXT RELIANT
Ready to get
it taken care of?
Call to discuss your project, or text your city and photos of the current system for an estimate. Reliant will confirm the scope and appointment availability.