Commercial Plumbers

When a plumbing problem hits your business, it’s more than an inconvenience—it’s a disruption that affects customers, employees, and revenue. Whether it’s a leaking pipe, a clogged drain, or a failing water heater, you need a team that responds fast and gets the job done right the first time.

At Mainstream Electric, Heating, Cooling, and Plumbing, we provide expert commercial plumbing services across Spokane, Spokane Valley, and Northern Idaho. Since 2000, we’ve helped local businesses stay up and running with reliable plumbing solutions, honest service, and around-the-clock support. We understand how critical plumbing is to your operations, and we’re here 24-hours to ensure it’s one less thing you have to worry about.

Full-Service Commercial Plumbing Solutions

Our licensed commercial plumbers are trained to handle plumbing systems of all sizes and complexities. Whether you manage a retail space, restaurant, or multi-unit property, we tailor our services to meet your building’s unique needs.

Mainstream offers a wide range of services, including:

• Drain cleaning and rooter services for backups, slow drains, or blockages

• Leak detection and pipe repairs to prevent water damage and operational disruption

• Fixture and faucet installation for commercial bathrooms, breakrooms, and kitchens

• Commercial water heater repair and replacement for consistent hot water supply

• Backflow prevention and testing to ensure regulatory compliance

• Sewer line inspections and trenchless repair options to minimize business interruption

Our team doesn’t just show up to fix a problem—we show up to understand your system, identify the root cause, and deliver lasting solutions. That’s what sets us apart from other commercial plumbing providers.

Always-On Emergency Service, Because Downtime Isn’t an Option

Plumbing emergencies don’t care about business hours—and neither do we. With 24/7 emergency plumbing services, you can count on Mainstream to respond day or night, weekends or holidays.

Whether it’s a burst pipe in a restaurant kitchen, a flooded utility room in your office, or an overflowing drain in a medical facility, our technicians arrive quickly with the tools and experience to take control of the situation. We work fast, cleanly, and with minimal disruption to your operations—because we know your reputation and revenue are on the line.

Prevent Problems Before They Start With Ongoing Maintenance

At Mainstream, we believe proactive care beats reactive repair. That’s why we offer customized maintenance plans for commercial plumbing systems that help prevent costly breakdowns and keep everything flowing smoothly year-round.

Our commercial clients can receive scheduled inspections, priority service, and savings on diagnostics and repairs. Our routine maintenance services identify potential issues before they cause business interruptions—so you can focus on serving your customers instead of dealing with surprise plumbing problems.

Seamless Support for Multi-System Properties

Many commercial spaces have complex utility needs, and plumbing is just one piece of the puzzle. Mainstream provides fully integrated support for commercial HVAC and electrical systems as well—making us the only partner you need for full-building performance.

Our technicians can coordinate plumbing repairs with HVAC upgrades or electrical panel assessments, ensuring your infrastructure is running efficiently across all essential systems. It’s just one more way we streamline service for Spokane businesses and eliminate unnecessary vendor overlap.

Local Experts Who Understand Local Codes

We’ve served Spokane County and Northern Idaho for over two decades, so we know the ins and outs of regional plumbing codes, backflow testing requirements, and utility standards. Whether you’re dealing with a new commercial build, a tenant improvement project, or routine inspection reporting, we’re already familiar with what inspectors expect and how to keep you compliant.

We also know that trust matters. That’s why Mainstream plumbers communicate clearly, show up on time, and treat your space with care and respect. We’re not just here to do the job—we’re here to build long-term partnerships with the businesses that power our community.

Trusted by Spokane’s Business Community Since 2000

Mainstream Electric, Heating, Cooling, and Plumbing has proudly supported the growth and success of Spokane businesses for over 20 years. We’ve helped keep restaurants open, offices comfortable, and apartment complexes fully functional—and we’re just getting started.

Whether you need scheduled maintenance, urgent repairs, or are planning plumbing upgrades as part of a renovation or expansion, you can rely on Mainstream to deliver high-quality commercial plumbing service with professionalism and heart.

Schedule Commercial Plumbing Service With Mainstream Today

If you’re looking for a plumbing partner who understands the needs of your business and stands behind every job, Mainstream is here to help. From routine repairs to system-wide solutions, our commercial plumbers are just a call away.

Explore our full range of commercial plumbing services or schedule a consultation to speak with a Mainstream expert today. We are Spokane. We are Mainstream.