Water Heater Products & Brands
We install, repair, and service all major water heater brands. Specializing in tankless water heaters with same-day installation and emergency repair services throughout Orange County, Los Angeles County, and Riverside County.
Why Choose Tankless Water Heaters?
Energy Efficiency
Up to 98% AFUE ratings with advanced condensing technology
Endless Hot Water
Never run out of hot water with on-demand heating
Smart Technology
WiFi-enabled controls and smart home integration
Long Warranty
Extended warranties up to 15 years on major components
Tankless Water Heater Brands We Install & Repair
💰 SoCal Gas Rebates Available!
Save up to $1,500 on select tankless water heaters through SoCal Gas rebates.
Water Heater Warehouse is a proud installer for the SoCal Gas Marketplace — ask us about eligible models and available rebates!
Rinnai
Industry-leading tankless water heaters with advanced technology
Specialties:
- Condensing Units
- Non-Condensing Units
- Outdoor Models
Navien
Premium condensing tankless water heaters with smart technology
Specialties:
- NPE Series
- NPN Series
- Smart Controls
Rheem
Reliable and efficient tankless water heating solutions
Specialties:
- Indoor Models
- Outdoor Models
- Commercial Units
A.O. Smith
American-made tankless water heaters with proven reliability
Specialties:
- Residential Units
- Commercial Applications
- Hybrid Models
Bradford White
Professional-grade tankless water heaters for demanding applications
Specialties:
- Professional Series
- Contractor Models
- Commercial Units
Noritz
Japanese-engineered tankless water heaters with superior efficiency
Specialties:
- Residential Units
- Commercial Models
- Condensing Technology
Bosch
German-engineered tankless water heaters with advanced features
Specialties:
- Greentherm Series
- Compact Models
- High-Efficiency Units
Takagi
Japanese precision engineering for residential and commercial use
Specialties:
- T-H3 Series
- T-KJr Series
- Commercial Applications
Traditional Tank Water Heater Brands
Budget-Friendly Options Available!
We understand every budget is different. That's why we offer affordable water heater solutions that don't compromise on quality or reliability.
on Full Water Heater Replacement
Ask about our budget-friendly packages and financing options. Quality service shouldn't break the bank!
Need Help Choosing the Right Water Heater?
Our certified technicians will help you select the perfect water heater for your home and budget. Free consultations and same-day installation available.
Helpful Resources
Contact Fullerton's #1 Emergency Water Heater Specialists
Need emergency water heater repair or installation in Fullerton, CA? Call (714) 244-8562for same-day service (call before 1pm). Licensed, insured, and 5-star rated!
Call Us Now
Same-day service (call before 1pm)
Service Area
Fullerton, CA & Surrounding Areas
Orange County • Los Angeles County • Inland Empire
Business Hours
Emergency calls answered 24/7
Same-Day Service (Call Before 1pm)
🎮 While you wait, play with our van!
Request Service
Fill out the form below and we'll get back to you within 30 minutes.
What customers say
“Was shopping for a tankless water heater to replace the previous one. The technicians showed up on time. The install was very clean and professional. They definitely knew what they were doing. Additionally, the office staff was very friendly and helpful. We would highly recommend!”
“Eddie and his partner did a great job of installing a new water heater. Very efficient time wise and good follow-up with checking to make sure that if I had questions he would address them. I recommend the Water Heater Warehouse!”
“Contacted the company this A.M. Was able to arrange for a water heater replacement the same afternoon. And they arrived 1 hour early, which was wonderful. Would definitely work with them again.”
“They showed up when they said they would, were friendly and informative, and didn't try to gouge me on price. No complaints!”
“Very happy with the replacement of my water heater that unexpectedly started leaking. Appreciate Gavin who smoothly got me an appt same day, and to the amazing installers who came out in the hot weather and worked so quickly amd efficiently! I was so pleased with the work they did. It was incredibly fast and looked pristine! I 1,000 % recommend this company!”
“Chris and James did a great job with my tankless water heater install. They were professional, courteous, and well prepared for the install. They kept me informed about their arrival time, and as the project proceeded. The entire job was done efficiently and timely. I would highly recommend Chris and James from Water Heater Warehouse if you are considering a new tank or tankless water heater!”