Northern California’s top wholesale plumbing supplier

For over 80 years, CAL-STEAM has served trade professionals in Northern California with dependable access to plumbing products and mechanical supplies. Find a CAL-STEAM location near you, and see what makes us your trusted plumbing and mechanical supply partner.

The plumbing supply house you can rely on

With 14 strategic locations across the San Francisco Bay area and Northern California, CAL-STEAM provides fast and convenient access to products for commercial and residential plumbers and mechanical contractors. In addition to our expansive inventory of plumbing and mechanical supplies, we provide expert support through our services tailored to fit the needs of trade professionals. Discover how our supplies and services will help you save time and money.

Visit a location near you to access our inventory

Mechanical supply

Take advantage of our comprehensive inventory of mechanical supplies from trusted manufacturers.

Commercial Mechanical Supply

Plumbing supply services

We’ll help you get the job done with plumbing supply services designed to help you work more efficiently.

Plumbing Supply Services

About us

CAL-STEAM is the top plumbing and mechanical supplier in Northern California with our industry-leading fill rate. We believe in providing best-in-class product support and cater to the needs of customers in the commercial trades. With services like custom quotations, commercial water heater delivery and Pro Pick-up, we are committed to providing our customers with the right products on time, every time. Find a location and contact us to benefit from our products and services.

About Us