When plumbing issues arise, they can quickly cause major disruptions to your home or business. Whether it’s a leaky faucet, a clogged drain, or a more serious emergency, having a reliable plumber in Diamond Bar, CA, is crucial to getting things back to normal fast. At Courtesy Plumbing, we have been proudly serving Diamond Bar and the surrounding areas for over 40 years, providing expert plumbing services that address all your needs. From routine maintenance to urgent repairs, our experienced team is here to ensure your plumbing system is always functioning at its best. Call us at 626-967-5655 to learn more.
Experienced and Trusted Professionals
At Courtesy Plumbing, we combine decades of plumbing experience with a commitment to delivering high-quality service that puts our customers first. Here’s why we are the plumber in Diamond Bar, CA, you can trust:
Customer Satisfaction Guaranteed
Over 40 Years of Expertise
Licensed and Skilled Technicians
Honest, Upfront Pricing
24/7 Emergency Service
All the Plumbing Services You Need
At Courtesy Plumbing, we offer a wide range of plumbing services to meet the needs of homeowners and businesses in Diamond Bar, CA. From minor repairs to large-scale installations, our expert team is equipped to handle it all:
Drain Cleaning: Clogged drains can cause backups and disrupt your plumbing system. We offer professional drain cleaning to clear blockages and restore proper flow.
Leak Detection and Repairs: We offer comprehensive leak detection and repair services to prevent water damage and conserve resources.
Water Heater Services: From maintenance to replacement, we provide reliable water heater services to ensure you always have hot water when you need it.
Toilet Installations and Repairs: Whether you need a new toilet installed or an existing one repaired, we provide expert toilet services to keep your bathroom functional and efficient.
Faucet Installations and Repairs: Our team handles faucet installations and repairs, offering solutions for everything from minor leaks to complete fixture replacements.
Pipe Repairs and Replacements: If your pipes are old, damaged, or leaking, we provide efficient repairs or replacements.
Plumbing Inspections: Regular plumbing inspections help identify potential issues before they become major problems. We offer thorough inspections to ensure your plumbing is in top condition.
Emergency Plumbing Services: We understand that plumbing emergencies can’t wait. Our emergency plumbing services are available 24/7 to address urgent issues quickly and effectively.
We pride ourselves on using the latest techniques and tools to deliver lasting solutions and ensure your plumbing system is running smoothly for years to come.
Contact Us Today
If you need a reliable plumber in Diamond Bar, CA, look no further than Courtesy Plumbing. Our team is dedicated to providing expert plumbing services with a focus on quality, efficiency, and customer satisfaction. Contact us at 626-967-5655 to schedule an appointment or request an estimate. Let us take care of all your plumbing needs!
Most Recent Pins (13)
Sean McGinnis
Courtesy Plumbing cleared a main sewer line through a 3 1/2" indoor cleanout in a utility room at a park in Walnut, CA. This service helps prevent blockages and ensures proper drainage. Regular sewer line maintenance can keep plumbing systems functioning efficiently.
Jack Bell
Courtesy Plumbing installed two stainless steel Price Pfister Ladera widespread lavatory faucets in a home in Diamond Bar, CA. We replaced hot and cold supply lines in the master bathroom and installed a new adjustable shower head.
Sean McGinnis
Courtesy Plumbing cleared a laundry drain line through the roof vent at a home in Rowland Heights, CA. The line had a typical buildup, which was successfully removed to improve drainage.
Jack Bell
Courtesy Plumbing replaced a main water service in Walnut, CA. The job included installing 120 feet of 1-inch type L copper piping from the meter to the house, adding a 1-inch irrigation branch, a main shut-off valve, and a pressure regulator. A Halo Ultimate H2O Zero Filter was also installed with an isolation valve and earthquake strap.
Jack Bell
We replaced a 50-gallon water heater in Walnut, CA. We installed a new Bradford White unit in the garage with a 24-inch drain pan and exterior drain line. We connected new hot and cold supply lines, replaced a 12-inch by 30-inch gas flex line, and removed the old water heater.
Jon Taylor
Courtesy Plumbing cleared a main line blockage using a 3-inch two-way cleanout in Diamond Bar, CA. This service ensures proper drainage and prevents backups. Regular maintenance helps keep plumbing systems functioning efficiently. Contact a professional plumber for main line cleaning to maintain reliable water flow in your home or business.
Jack Bell
Courtesy Plumbing installed an Insinkerator Badger 5 garbage disposal with a 1/2 horsepower motor under a kitchen sink in Diamond Bar, CA. This service ensured efficient waste disposal functionality for the household.
Tess Watson
Courtesy Plumbing provided toilet repair services in Hacienda Heights, CA. Our team replaced a Fluidmaster fill valve to restore proper toilet functionality in a residential property. This service ensures reliable water flow and efficient toilet operation in your home.
Tess Watson
Courtesy Plumbing provided plumbing services in Diamond Bar, CA. The project involved replacing Price Pfister hot and cold washers in a shower valve and installing a Fluidmaster fill valve inside a toilet.
Aaron Riley
Courtesy Plumbing installed two American Standard ADA-compliant toilets equipped with Sloan valves, trap primers, and spuds in a commercial building in City of Industry, California. The work ensures functionality and accessibility for businesses requiring high-quality plumbing installations.
Berni Houson
Courtesy Plumbing replaced a chrome basket strainer on a prep sink and reattached the existing drain line for a customer in Walnut, CA. The service ensured proper functionality of the sink and drain system.
Tess Watson
Courtesy Plumbing provided drain cleaning services in Diamond Bar, CA. The team snaked a clogged kitchen sink line using a Gorlitz drain cleaning machine, efficiently restoring proper drainage for the household on January 21, 2025.
Tess Watson
Courtesy Plumbing provided a free on-site estimate for the installation of a commercial-grade Zurn backflow device in Walnut, CA. This service ensures effective water flow management and complies with safety standards for commercial properties.
Most Recent Reviews (3)
Mar 17, 2025
Excellent service. We are very happy with the results of your attention to customer preferences.
Kathy Farris
Feb 24, 2025
Great service performed work on time and did an excellent job.
Ken
Jan 31, 2025
Excellent! I called in the morning to get a leaking shower head fix and technician (Jack) came on the same morning. Service is great, he fixed what we needed to fix and checked other areas if there are any leaking. He also gave us honest recommendations for potential issue. Pricing is reasonable. Thank you for the great service!
Elke
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