Etna Supply is a trusted partner for hydronic heating and HVAC parts and supply, offering high-quality solutions for commercial and residential applications. From water heaters and boilers to tanks, controls, and accessories, we help heating professionals deliver top-tier service.
Beyond supplying equipment, we specialize in hydronic heating system design, providing custom layouts and drawings to meet project specifications. Whether you're working on a new build, upgrade, or complex system, our team is here to help.
Browse our heating products, trusted by contractors, engineers, and HVAC professionals.
Our HVAC Solutions
We carry a wide range of products to meet the needs of HVAC professionals, including:

Hydronic Heating Systems & Boilers
We offer efficient solutions for both residential and commercial applications. Choose from high-performance boilers, radiant heating systems, and hydronic components designed for energy efficiency and long-term reliability.

Water Heaters & Tanks
Ensure consistent hot water supply with our range of water heaters and storage tanks. From tankless to high-capacity models, we offer solutions for commercial, industrial, and residential applications.

HVAC Equipment
From forced air systems to ventilation solutions, we provide unitary air conditioners, heat pumps, furnaces, rooftop units, unit heaters, make-up air systems, and more to meet the demands of modern HVAC installations.

Indoor Air Quality
Improve air quality and system efficiency with our air filtration, humidifiers, dehumidifiers, and ventilation accessories. Learn more about improving indoor air quality.

Controls & HVAC Accessories
Optimize system performance with our selection of HVAC controls and accessories. We carry thermostats, pumps, valves, zoning controls, and more to ensure precise temperature regulation, efficiency, and seamless system operation.

Vents and Chemical Treatment
Proper venting and chemical treatment are key to HVAC system health. Explore our selection of vents, ducts, exhaust fans, and water treatment products that support airflow, reduce corrosion, and help systems run cleaner, longer.
Our Trusted Brands
We supply HVAC parts and supply from leading manufacturers to ensure quality and reliability.
Hydronics and HVAC Line Catalog
Browse our catalogs and find the right hydronic heating and HVAC parts and supply for your project.
Optimize Your Heating Projects with Our Checklist
Is it time to run seasonal inspections on heating systems? Don’t wait! Download our Heatings System Checklist to:
- Eliminate high-cost emergencies
- Lower utility costs and save energy
- Increase the service life of the equipment
- Provide greater comfort for the building occupants
Visit Us Today!
With locations across Michigan, Northern Indiana, Northern Ohio, and Wisconsin, we provide fast access to essential HVAC parts and supply for your heating projects.
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Have an HVAC or Hydronics Question?
What HVAC and hydronic products does Etna Supply carry?
We carry a full range of hydronic heating and HVAC parts and supplies for residential, commercial, and industrial applications. This includes air conditioners, boilers, water heaters, unit heaters, tanks, pumps, controls, heat pumps, furnaces, ventilation equipment, and accessories.
Do you specialize in hydronic heating systems?
Yes. Hydronic heating is a core area of expertise at Etna Supply. We support radiant heating systems, boilers, and hydronic components designed for energy efficiency, comfort, and long-term reliability.
Learn more about hydronic heating solutions.
Can Etna Supply help with hydronic system design?
Yes. Beyond supplying equipment, our team provides hydronic heating system design services, including custom layouts and drawings to meet project specifications. We support new builds, system upgrades, and complex installations.
Do you carry HVAC equipment for residential and commercial applications?
Yes. We supply HVAC equipment for homes and commercial buildings. Our selection includes furnaces, heat pumps, unitary air conditioners, rooftop units, unit heaters, make-up air systems, and ventilation solutions.
What water heaters and tanks do you offer?
We offer a wide range of water heaters and storage tanks, including tankless, high-capacity, and commercial-grade models. Our solutions support consistent hot water delivery across residential, commercial, and industrial applications.
Explore water heaters and tanks.
Do you offer HVAC controls and accessories?
Yes. We carry HVAC controls and accessories, including thermostats, pumps, valves, zoning controls, and system components, designed to improve efficiency, comfort, and performance.
Shop HVAC controls and accessories.
Can I source HVAC parts locally from Etna Supply?
Yes. With locations across Michigan, Northern Indiana, Northern Ohio, and Wisconsin, many HVAC parts and supplies are available locally or can be transferred quickly between branches.
Find your nearest Etna branch.
Can Etna Supply support large or complex HVAC projects?
Yes. We work with contractors, engineers, and HVAC professionals to support large, complex projects by coordinating equipment selection, system design, availability, and delivery across multiple locations.
