The Value of Contractor Education and Technical Resources
The trades are always changing. Products evolve, systems become more advanced, efficiency standards shift, and...
Welcome to Hartsig Supply
More Than a Distributor. A Technical Supply Partner.
Hartsig Supply helps contractors select the right equipment, troubleshoot complex problems, design better systems, and get the products they need to keep projects moving.
60+
Years Experience
About Hartsig Supply
A Technical Supply House Built Around Knowledge, Service & Solutions
Hartsig Supply is a professional supply house serving contractors, plumbers, installers, service technicians, builders, and trade professionals throughout Michigan. We provide more than products. We provide technical guidance, product knowledge, troubleshooting support, system design assistance, and reliable access to the inventory contractors need to complete jobs with confidence.
- Technical supply expertise
- Large in-stock inventory
- Troubleshooting assistance
- System design support
- Long-term contractor relationships
Built on Experience. Focused on Contractor Support.
For more than 60 years, Hartsig Supply has helped contractors find the right products, solve system challenges, and keep jobs moving with knowledgeable service and dependable inventory.
60+
Years of Experience
1,000+
Products in Stock
6+
Core Supply Categories
1
Trusted Technical Partner
Services
Explore Our Core Capabilities
Hartsig Supply supports contractors with professional products, technical guidance, troubleshooting assistance, and system support across plumbing, wastewater, well systems, water treatment, domestic hot water, and hydronic heating.
✅ Large in-stock inventory for contractors
✅ Technical support for complex systems
✅ Product guidance from experienced professionals
✅ Solutions for plumbing, pumps, water, and heating
✅ Built around long-term contractor relationships
Technical Services
Equipment sizing, troubleshooting support, system design assistance, control panel guidance, start-up help, and contractor education.
Technical Support
Expert Guidance From People Who Understand the Work
Contractors come to Hartsig Supply because our team understands more than product numbers. We help customers think through applications, troubleshoot problems, compare equipment options, and select the right products for the job.
Product Knowledge
Application-Based Guidance
Troubleshooting Support
Practical System Help
System Design Assistance
Smarter Planning Support
Why Choose Hartsig
The Difference Is Technical Support
Contractors do not just need boxes on a shelf. They need answers. Hartsig Supply combines product availability with technical experience to help contractors solve problems, select the right equipment, and keep projects moving.
Expert Guidance
Our team helps contractors choose the right products for the actual application.
Large Inventory
We maintain strong inventory so contractors can get what they need without unnecessary delays.
Problem Solving
We help customers troubleshoot system issues and identify practical solutions.
Contractor Relationships
Our customers rely on us because we understand their work and support them beyond the sale.
Technical Confidence
Products, support, and guidance backed by real industry experience.
Plumbing Products
Professional plumbing products and jobsite essentials.
Product Support
In Stock Daily
- Pipe, fittings, valves, and repair parts
- Water heaters, fixtures, and drainage products
- Gas piping products and plumbing tools
- Product guidance for contractors
- Support for service, remodel, and new construction
Wastewater & Lift Stations
Pump, control, and lift station support.
System Support
Technical Help
- Sewage, effluent, and grinder pumps
- Lift stations, basins, and system components
- Control panels, floats, and alarms
- Troubleshooting support for contractors
- Product selection for wastewater applications
- 60-day service warranty
Well Pumps & Water Systems
Water system products and sizing support.
Sizing Help
Water Systems
- Submersible pumps and pressure tanks
- Constant pressure systems and controls
- Variable frequency drives and accessories
- Pump sizing and replacement guidance
- Troubleshooting support for water systems
Products, Systems & Support for Contractors
Hartsig Supply supports contractors across a wide range of technical supply categories, with product knowledge and system guidance available throughout the process.
Got Questions? We’ve Got Answers!
Do you help with equipment sizing?
Yes. Hartsig Supply helps contractors evaluate applications, compare product options, and select properly sized equipment for the job.
Do you offer troubleshooting support?
Yes. Our team helps contractors work through product, system, and application issues so they can identify practical next steps.
Do you carry products in stock?
Yes. Hartsig Supply maintains a large in-stock inventory to help contractors get the products they need quickly.
Do you support water treatment and filtration?
Yes. We support well water, city water, drinking water systems, softeners, iron removal, reverse osmosis, UV disinfection, and related treatment products.
Do you work with contractors only?
Hartsig Supply is contractor-focused, but we also support builders, service professionals, businesses, and customers who need reliable product guidance.
Technical Resources
Expert Tips & Technical Insights for Contractors
Explore future articles, troubleshooting guides, product demonstrations, training videos, installation tips, and manufacturer resources designed to help contractors solve problems and build better systems.
Equipment Sizing, Troubleshooting, and Product Selection Support
Equipment sizing, troubleshooting, and product selection are three areas where contractors often need more than...
How Technical Support Helps Contractors Solve System Problems
System problems can be frustrating because the obvious issue is not always the real cause....
Contact Hartsig Supply
Need Product Availability, Technical Support, or Help Solving a System Problem?
Technical Support
Get help selecting equipment, comparing options, and understanding system requirements.
Large Inventory
Access a wide range of plumbing, pump, water, heating, and technical supply products.
Contractor Focused
Support built around the needs of plumbers, installers, service techs, and trade professionals.
Real Solutions
Talk with people who understand the products, systems, and jobsite challenges.
Send us a message
Testimonials
What Our Clients Say About Us
Client
Wonderful place, they have everything plumbing. Very helpful and very nice from owners to the staff. Highly recommend!
Client
At Sandison Plumbing Heating Cooling Electrical we highly recommend the abilities of our partners at Hartsig. From valves fixtures and pumps they have what you need.
Client
I always receive very helpful advice and supplies for my DIY plumbing projects. I will continue to go back for more.
Client
The guys went above and beyond to help me out. Very much appreciated. Hartsig is now my go-to for plumbing supplies. Do yourself a favor, skip the big box stores and shop local.
Client
This is a great location to get and plumbing products or Milwaukee tools. The employees are very helpful and knowledgeable