Plumbing services
call us now for all your plumbing needs!
Keep your drains flowing smoothly with Knockout Plumbing’s expert drain cleaning and sewer repair services in Seattle. Whether you’re dealing with a stubborn clog, slow drain, or a backed-up sewer line, our team uses advanced tools like hydro jetting and sewer camera inspections to pinpoint and fix the issue fast. From emergency drain snaking to long-term pipe solutions, we’ve got your home or business covered.
Gas Line Services
Trust Knockout Plumbing for safe, professional gas line installation and repair services in Seattle. Whether you’re upgrading appliances, adding a gas BBQ line, or repairing a leak, our licensed plumbers ensure your gas lines meet all safety codes and work flawlessly. We specialize in residential and commercial gas line work—from new installations to emergency gas leak repairs.
Water heater services
Reliable Water Heater Installation & Repair Services in Seattle
Whether you need a new water heater installed or your current unit repaired, Knockout Plumbing delivers fast, expert solutions. We work with all types—tankless, gas, electric, and hybrid systems—to keep your hot water running efficiently. Our Seattle plumbers are trained to handle everything from routine maintenance to emergency replacements, ensuring long-lasting performance and energy savings. We install high-quality brands like Bradford White and Navien, and we’re happy to walk you through sizing, efficiency, and warranty options.
✅ Tankless Water Heater Installation
✅ Gas Water Heaters
✅ Electric Water Heaters
✅ Combi-Boiler Systems
Remodeling & Re-piping
Remodeling & Repiping Services in Seattle
Upgrade your home with expert remodeling and repiping services from Knockout Plumbing. Whether you’re renovating a kitchen, bathroom, or adding a new fixture, we ensure your plumbing system is up to code and built to last. Our Seattle plumbers handle everything from partial pipe replacements to full-home repipes using durable, long-lasting materials. We work seamlessly with contractors to deliver clean, efficient plumbing upgrades that support your remodel from start to finish.
Leak Detection & Pipe Repair
Stop water damage before it starts. At Knockout Plumbing, we specialize in fast, accurate leak detection and expert pipe repairs. Whether it’s a hidden slab leak, a burst pipe, or aging plumbing, our Seattle plumbers use advanced diagnostic tools to locate issues quickly and fix them right the first time. We’re here for emergency repairs or preventative maintenance—keeping your home safe, dry, and damage-free.
Sump Pumps & Outdoor Drainage Solutions
Protect your property from Seattle’s rainy season. We install and repair sump pumps, French drains, trench drains, and custom outdoor drainage systems designed for long-term water control. Whether you’re dealing with flooding, pooling water, or runoff near a foundation, we’ll create a tailored solution to keep your basement, yard, or crawl space dry year-round.
Remodels, ADU's, and Whole-Home Plumbing Upgrades
Knockout Plumbing specializes in full-scope plumbing for remodels, additions, and new construction. From bathroom and kitchen rough-ins to full repipes and accessory dwelling units (ADUs & DADUs), we deliver reliable, code-compliant plumbing that’s built to last. Whether you’re renovating a single room or adding an entirely new structure, our Seattle plumbing team has the expertise to keep your project on track.
