David Harper
Whether you are dealing with a sudden late-night pipe burst, struggling with harsh mineral deposits ruining your home fixtures, or planning a complete system upgrade, having a seasoned professional in your corner makes all the difference. Meet David Harper, the founder, owner, and driving force behind Knockout Plumbing LLC.
With a career spanning over 25 years in the trade, David has built his entire reputation on a single, uncompromising standard: providing honest recommendations, quality craftsmanship, and exceptional customer service to every single client he serves.
Over 25 Years of Plumbing Excellence
David’s journey in the trade started more than two decades ago. Over the years, he earned his credential as an Arizona licensed plumbing contractor alongside his journeyman license, mastering every facet of residential and commercial plumbing systems.
Having served as a trusted plumber San Tan Valley and Queen Creek homeowners count on daily, David founded Knockout Plumbing LLC to set a higher benchmark for the trade. His vision was clear from day one, to build a customer-first plumbing company that prioritizes open communication, complete professionalism, and long-term client relationships over quick fixes.
To guide this mission, David established the company around a straightforward philosophy: “Right Company, Right Tech, Right Price.” He believes that finding a dependable plumbing service should never feel like a gamble. David believes every customer deserves honest advice, transparent pricing, and no surprises before the job begins.
Technical Expertise & Core Specialties
Throughout his 25-plus years in the field, David has personally diagnosed and completed thousands of jobs. As an experienced plumbing contractor, his hands-on expertise spans a complete range of modern plumbing services:
- Water Heater Repair & Replacement: From servicing traditional tank units to performing complete tankless water heater installation, David guarantees that your home maintains consistent, energy-efficient hot water delivery year-round.
- Drain Cleaning & Hydro Jetting: Persistent clogs and heavy line build-up require advanced intervention. David utilizes specialized hydro jetting services and targeted drain cleaning to clear tough obstructions and restore optimal flow.
- Sewer & Leak Detection Services: Utilizing non-invasive slab leak detection, David locates hidden foundation leaks early before they cause costly structural damage, offering long-term repairs through traditional sewer line repair or modern trenchless sewer repair.
- Water Softeners & RO Systems: Living in the desert means dealing with aggressive mineral levels. David designs custom water treatment setups, including whole-home water softener installation and reverse osmosis systems to protect your health, appliances, and pipe infrastructure.
- Whole-Home Repiping: When corroded or aging pipes reach the end of their operational lifespan, David guides property owners through seamless home repiping projects that protect the building for decades to come.
- Commercial & Residential Plumbing: From minor residential fixture repairs to large-scale commercial plumbing installations, David applies master-level precision and care to every job site.
From small repairs to larger plumbing projects, David takes pride in providing dependable service and workmanship you can count on.
Tackling Arizona-Specific Plumbing Challenges
Plumbing in the East Valley requires distinct local knowledge. Having lived in the Queen Creek and San Tan Valley area since 2011 and actively serving the region for over 6 years through Knockout Plumbing LLC, David understands the environmental factors that strain local systems.
Extreme hard water causes rapid scale accumulation inside water heaters and supply lines, while dramatic desert ground temperature shifts can cause subtle ground movement leading to slab leaks. David’s extensive experience addressing these regional conditions allows him to provide long-lasting repairs tailored specifically to Arizona homes.
Recognized Community Ties & Local Excellence
For David, building a business is about more than just completing service calls, it is about investing in the place he calls home. Over the years, Knockout Plumbing LLC’s dedication to quality workmanship and honest customer care has earned prominent community recognitions:
- Best Business in Queen Creek Award Recipient
- Queen Creek Business of the Year (2025)
- East Valley Favorites Winner (2024)
David’s commitment goes beyond plumbing. He proudly supports local community organizations, youth sports, and neighborhood events throughout Queen Creek and San Tan Valley. Giving back to local families and helping the East Valley community thrive has always been a core value of Knockout Plumbing LLC.
The Knockout Difference: Customer-First Service
When you need an emergency plumber near me for an unexpected midnight leak or require an expert assessment for an upcoming renovation, David Harper and the Knockout Plumbing LLC team stand ready to help.
Outside of work, David enjoys making memories with his family, supporting local youth programs, and spending quiet time at home with the family dog. His commitment to honest service and strong community values continues to make the company a trusted choice for homeowners across the East Valley.
