Plumbing Services in Pasadena & the San Gabriel Valley

Premier Flow Plumbing is a licensed and insured residential plumbing company serving Pasadena, Altadena, San Marino, Arcadia, Glendale, and the surrounding San Gabriel Valley. We specialize in tankless and conventional water heaters, gas line installation and leak detection, water softeners and whole-home filtration, and pipe repair and replacement. Every job is owner-operated, performed to code, and backed by a clear, upfront price.

Tankless Water Heater Installation & Repair

A tankless water heater delivers endless hot water on demand, frees up garage or closet space, and can cut energy costs by up to 30 percent compared to a conventional tank. Premier Flow Plumbing is a trusted installer of Navien, Rinnai, Rheem, and Noritz tankless systems throughout Pasadena and the San Gabriel Valley. Whether you're upgrading from a tank, replacing an aging unit, or troubleshooting an existing system, we handle the gas line sizing, venting, condensate management, and permitting from start to finish. Every install is sized to your home's actual hot water demand and built to last.

Rinnai tankless water heater installed by Premier Flow Plumbing in Sierra Madre, CA.
Bradford White conventional water heater installed by Premier Flow Plumbing in Monrovia, CA.

Conventional Water Heater Installation & Replacement

A traditional tank water heater is still one of the most reliable and affordable ways to deliver hot water to your home. Premier Flow Plumbing installs and replaces Bradford White water heaters — a contractor-grade brand built to last longer than the units sold at big-box stores. We size each unit to your household's hot water needs, handle the gas or electric hookup, install the required expansion tank, T&P valve, and seismic strapping, and dispose of your old unit. Every install is performed to California code and pulled with a permit when required. If your existing tank is leaking, making popping noises, or running out of hot water faster than it used to, we can typically replace it the same day.

Gas Line Installation & Gas Leak Detection

Gas line work is one of the most safety-critical jobs in plumbing — there's no margin for error. Premier Flow Plumbing installs new gas lines for water heaters, ranges, dryers, fire pits, pool heaters, and outdoor kitchens, and we run dedicated lines for tankless water heater upgrades that require larger gas supply. If you smell gas, hear hissing near a gas appliance, or have received a notice from SoCalGas, we provide professional leak detection using electronic sniffers and pressure testing to pinpoint the exact source. All gas work is performed under permit when required, pressure-tested before the line is put back in service, and signed off to code. Your safety is the priority on every job.

Gas line replacement by Premier Flow Plumbing in Pasadena, CA.
Water softener installation by Premier Flow Plumbing in Pasadena, CA.

Water Softeners & Whole-Home Filtration

Pasadena and the San Gabriel Valley have some of the hardest water in Southern California — high mineral content that scales up your water heater, clogs faucets and showerheads, leaves spots on dishes, and dries out skin and hair. Premier Flow Plumbing installs whole-home water softeners that protect your plumbing and appliances by removing the calcium and magnesium that cause scale buildup. We also install whole-home filtration systems that reduce chlorine, sediment, and other contaminants at the point where water enters your home, so every tap delivers cleaner water. We help you pick the right system for your household size and water usage, install it with proper bypass valves and drain connections, and walk you through maintenance.

Pipe Repair & Replacement

Leaking pipes, low water pressure, discolored water, and recurring slab leaks are all signs that your home's plumbing may need attention. Premier Flow Plumbing handles everything from small pinhole leak repairs to whole-home repipes throughout Pasadena and the San Gabriel Valley. We work in copper, PEX, and CPVC depending on what's right for your home — copper for its proven longevity, PEX for its flexibility and freeze resistance, and CPVC where code or budget calls for it. Whether you're dealing with a slab leak under the foundation, galvanized pipes that have outlived their lifespan, or a hidden leak inside a wall, we diagnose the problem accurately, give you a clear repair-versus-repipe recommendation, and back every job with code-compliant workmanship.

Copper pipe repair by Premier Flow Plumbing in Pasadena, CA.
Sewer line repair by Premier Flow Plumbing in Pasadena, CA.

Drain Cleaning & Sewer Service

Slow drains, gurgling toilets, and sewer odors are usually signs of a clog or blockage somewhere in your drain line. Premier Flow Plumbing handles residential drain cleaning and sewer service throughout Pasadena and the San Gabriel Valley — from kitchen and bathroom sink clogs to main line stoppages. For complex sewer issues, we coordinate with trusted, licensed partners to bring in mainline cameras and hydro-jetting equipment when needed, so you get the right tool for the job without having to make multiple calls. Whether it's a one-time clog or a recurring issue that points to a deeper problem like root intrusion or a collapsed line, we'll diagnose it accurately and walk you through your options.

Flo by Moen Smart Water Shutoff Installation

A single undetected leak can do tens of thousands of dollars in damage to your home — and most insurance policies won't cover the full cost of water damage. The Flo by Moen Smart Water Shutoff is a small device installed on your main water line that monitors flow, pressure, and temperature 24/7, learns your home's normal water usage patterns, and automatically shuts off the water if it detects a leak, a burst pipe, or unusual flow. You get real-time alerts on your phone, and many home insurance providers offer discounts when one is installed. Premier Flow Plumbing is experienced with Flo by Moen installations throughout Pasadena and the San Gabriel Valley — we handle the plumbing tie-in, electrical connection, Wi-Fi pairing, and walk you through the app so the system is fully protecting your home before we leave.

Flo by Moen installation by Premier Flow Plumbing in Pasadena, CA.