# Water Heater Warehouse > Licensed water heater repair, installation, and replacement company serving Orange County, Los Angeles County, and Riverside County in Southern California. Same-day service, 24/7 emergency response, residential and commercial. Water Heater Warehouse is based in Fullerton, CA and provides tank, tankless, gas, electric, and hybrid water heater services across more than 80 cities in Southern California. The company is licensed, insured, and offers a maintenance subscription called the Advantage Program. - **Main phone (service & emergencies):** 714-244-8562 - **Advantage Program phone:** 714-487-0068 - **Service hours:** 24/7 emergency, 7 days a week - **Headquarters:** Fullerton, California, USA - **Primary website:** https://whwllc.com - **Alternate domain:** https://thewaterheaterwarehouse.com ## Services - [All Services](https://whwllc.com/services): Overview of every water heater service offered. - [Emergency Water Heater Repair](https://whwllc.com/services/emergency-repair): Same-day diagnosis and repair for failed, leaking, or no-hot-water units. - [Water Heater Installation](https://whwllc.com/services/installation): New tank and tankless water heater installation with code-compliant permits. - [24/7 Emergency Service](https://whwllc.com/services/emergency-service): Round-the-clock dispatch for urgent water heater problems. - [Residential Service](https://whwllc.com/services/residential): Home water heater repair, replacement, and maintenance. - [Commercial Service](https://whwllc.com/services/commercial): Restaurants, multi-family, hospitality, and industrial water heater service. - [Maintenance Plans](https://whwllc.com/services/maintenance): Annual flushing, anode rod inspections, and preventative service. - [Advantage Program](https://whwllc.com/services/advantage-program): Membership program covering residential and commercial jobs — call 714-487-0068. ## Main Pages - [Home](https://whwllc.com/): Company overview, services, and service areas. - [Products](https://whwllc.com/products): Brands and models of water heaters carried (Rheem, Bradford White, Navien, Rinnai, etc.). - [About](https://whwllc.com/about): Company history, licensing, and team. - [Service Areas](https://whwllc.com/service-areas): Full list of cities and counties served. - [Contact](https://whwllc.com/contact): Phone, contact form, and service request. - [Careers](https://whwllc.com/careers): Plumber and technician job openings. ## Service Area Pages (representative) City-specific pages exist for 80+ Southern California cities under `/cities/{city-name}`. Representative examples: - [Anaheim](https://whwllc.com/cities/anaheim) - [Santa Ana](https://whwllc.com/cities/santa-ana) - [Irvine](https://whwllc.com/cities/irvine) - [Huntington Beach](https://whwllc.com/cities/huntington-beach) - [Fullerton](https://whwllc.com/cities/fullerton) - [Long Beach](https://whwllc.com/cities/long-beach) - [Los Angeles](https://whwllc.com/cities/los-angeles) - [Pasadena](https://whwllc.com/cities/pasadena) - [Riverside](https://whwllc.com/cities/riverside) - [Corona](https://whwllc.com/cities/corona) - [Temecula](https://whwllc.com/cities/temecula) For the complete list, see the [sitemap](https://whwllc.com/sitemap.xml). ## Tools - [Interactive Tools](https://whwllc.com/tools): Sizing calculator, diagnostic wizard, and product comparison tools. ## Blog - [Blog](https://whwllc.com/blog): Articles on water heater maintenance, troubleshooting, energy efficiency, and buying guides. ## Optional - [Sitemap (XML)](https://whwllc.com/sitemap.xml) - [Robots policy](https://whwllc.com/robots.txt)