Andersen Commercial Plumbing, LLC
Andersen Commercial Plumbing, LLC
Andersen Commercial Plumbing is a commercial plumbing contractor founded in 1994. Based in Covina, it serves Southern California commercial properties, including offices, high-rises and industrial facilities.
Last Updated October 2, 2026.
Business Highlights
- Its service department says it has more than 30 experienced technicians.
- It describes its backflow specialists as state-certified.
Service Area
Los Angeles County: Long Beach, Pasadena, Glendale, Torrance, Santa Clarita, Burbank, Pomona, West Covina, Downey, Inglewood, Santa Monica, Carson, Whittier and El Monte; Orange County: Anaheim, Santa Ana, Irvine, Fullerton, Huntington Beach, Garden Grove, Orange, Mission Viejo, Newport Beach, Laguna Beach, Laguna Niguel, Costa Mesa, Lake Forest, Buena Park and Tustin.
Active Business Listing
Andersen Commercial Plumbing, LLC is one of 12 plumbers ProsGrade lists in Azusa, California.
12 services listed, including Tenant improvements, New construction – design-build and Service and repair. Open 24 hours, 7 days a week. Rated 4.9 from 135 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How Andersen Commercial Plumbing, LLC compares with the other 11 plumbers on ProsGrade in Azusa, using public Google ratings and review counts.
- Rated 4.9 on Google, at or above the 4.9 average of other Azusa plumbers on ProsGrade.
- Has more Google reviews (135) than 6 of the 11 other Azusa plumbers on ProsGrade.
- One of 12 Azusa plumbers on ProsGrade rated 4.7 or higher from at least 10 reviews.
Trust Signals
Open 24/7 for commercial and multifamily plumbing needs.
Services Covered
12 services- Tenant improvementsADA upgrades, core restroom remodelling and med-gas piping
- New construction – design-buildTurnkey budgeting, design, value engineering and plan checks
- Service and repairCommercial plumbing system repairs
- Backflow testing and preventionTesting, repair and replacement
- Drain cleaning and jettingLines up to 10 inches
- Video camera inspection
- Sump pump and sewage ejector repair and replacement
- Sewer re-lining and leak detection
- Fixture repair and replacement
- Electric and gas water heater repair and replacement
- Boiler repair and replacement
- Preventive maintenance
Reviews
What customers say
Customers praise technicians' professionalism and troubleshooting. One customer valued a technician who purchased the needed items, installed them and explained maintenance; another reported coming home to an open glass patio door and sludge on surfaces after work.
Customer Reviews
Annie P.
Hector from Andersen Plumbing did a fantastic job and was very polite and professional. Highly recommend! Will request him in the future, for sure. Thank you! ??
Nick Stonnington
Ambar Reyes
Everardo Zavala
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Frequently Asked Questions
Does Andersen Commercial Plumbing provide emergency service?
It provides emergency service 24 hours a day, 365 days a year.
Can Andersen Commercial Plumbing manage jurisdictional approvals for a tenant-improvement project?
Its tenant-improvement services include management of jurisdictional approvals and plan-check services.
What sizes of backflow devices does Andersen Commercial Plumbing handle?
Its backflow service handles devices from 1/4-inch to 16-inch.








