Top 7 Medium Frequency Furnace Suppliers in the United States

1. American Foundry Solutions (Detroit, MI)

Founded in 1985, American Foundry Solutions (AFS) has deep roots in Detroit's manufacturing heritage. What started as a small machine shop repairing industrial furnaces has grown into one of the country's most trusted names in metal melting equipment. Today, AFS is known for its rugged, high-performance medium frequency electric furnaces, designed specifically for the demands of heavy-duty foundries and large-scale recycling operations.

What really sets AFS apart is their focus on customization. Walk into their Detroit headquarters, and you'll find engineers working side-by-side with customers to design furnaces tailored to unique melting needs. Need a furnace that can handle 5-ton batches of scrap steel for automotive parts? They've got you. Looking for a compact unit to melt aluminum scrap from beverage cans? They'll build it. One of their most popular models, the MFX-5000, is a favorite among scrap metal recyclers for its rapid heating cycle—melting 2,000 pounds of steel in under an hour—and energy efficiency that cuts utility costs by up to 15% compared to older models.

But AFS doesn't stop at furnaces. They've expanded their lineup to include complementary equipment, like metal melting furnace equipment for smaller operations and air pollution control system equipment to keep workspaces compliant with EPA standards. Customers rave about their 24/7 technical support—critical in an industry where downtime can cost thousands. As one long-time client, a Wisconsin-based foundry, put it: "AFS doesn't just sell you a furnace. They stick around to make sure it runs like a dream, even when things get messy."

2. EcoMet Recycling Tech (Portland, OR)

If sustainability is your top priority, EcoMet Recycling Tech should be on your radar. Founded in 2001 by a team of environmental engineers, this Portland-based supplier has made a name for itself by merging cutting-edge furnace technology with eco-friendly design. Their medium frequency furnaces aren't just efficient—they're built with the planet in mind, making them a go-to for recycling facilities focused on lead acid battery recycling, lithium-ion battery processing, and other green initiatives.

EcoMet's flagship product, the EcoMelt MF-300, is a game-changer for lead acid battery recycling equipment operations. Unlike traditional furnaces that release harmful emissions, the MF-300 comes paired with an integrated air pollution control system that captures over 99% of particulate matter and toxic fumes. It's also designed to minimize energy waste, using advanced induction technology that converts more than 85% of electrical input into heat. For a Colorado-based battery recycling plant that switched to EcoMet last year, the results were clear: lower energy bills, cleaner air, and a 30% boost in daily lead recovery.

What makes EcoMet stand out isn't just their green focus—it's their commitment to education. They offer free workshops for customers on best practices in sustainable melting, from optimizing scrap sorting to reducing water usage. Their team even helps clients navigate complex EPA regulations, ensuring that new equipment meets all local and federal standards. As one customer put it: "With EcoMet, you're not just buying equipment—you're joining a community that's serious about doing business the right way."

3. Precision Furnace Systems (Cleveland, OH)

Precision is in the name, and Precision Furnace Systems (PFS) lives up to it. Since 1992, this Cleveland-based supplier has built a reputation for medium frequency furnaces that deliver pinpoint accuracy—critical for industries like aerospace and medical device manufacturing, where even the smallest variation in metal composition can ruin a batch.

PFS furnaces are known for their advanced control systems. Their ProSeries MF line comes equipped with touchscreen interfaces that let operators monitor temperature, melting time, and energy usage in real time. Want to melt a batch of titanium alloy to exactly 1,668°C? The ProSeries can hold that temperature steady within ±2°C, ensuring consistent results every time. It's no wonder companies like Boeing and Medtronic rely on PFS for their most demanding projects.

But PFS isn't just for high-tech industries. They also cater to small and mid-sized metal shops with their CompactLine series—affordable, space-saving furnaces that don't skimp on precision. One of their most versatile models, the CompactLine 50, is a hit with jewelry makers and custom metal fabricators, offering 50kg melting capacity and easy-to-use controls that don't require a PhD to operate. Plus, PFS offers lifetime technical support, with a team of engineers available for phone consultations or on-site visits. As a small shop owner in Pennsylvania put it: "I'm not a metallurgist, but PFS makes me feel like one. Their furnaces are so intuitive, and if I ever hit a snag, their team walks me through it step by step."

4. GreenCycle Equipment Co. (Austin, TX)

GreenCycle Equipment Co. is proof that innovation can come from unexpected places. Founded in 2010 by a group of former Tesla engineers, this Austin-based startup set out to reimagine metal melting for the circular economy—and they've done just that. GreenCycle specializes in medium frequency furnaces designed for lithium-ion battery recycling and electronic waste processing, two of the fastest-growing sectors in recycling today.

Their star product, the LiMelt MF-1000, is a game-changer for lithium battery recycling equipment operations. Traditional furnaces struggle with lithium-ion batteries, which can release toxic gases if not melted carefully. The LiMelt solves this with a sealed, inert-gas environment that safely contains fumes, paired with a dry process system that separates valuable metals like cobalt and nickel from plastic casings. A California-based e-waste recycler reported that switching to the LiMelt increased their lithium recovery rate by 40% while cutting processing time in half.

But GreenCycle doesn't stop at batteries. They've also developed a line of circuit board recycling equipment that works seamlessly with their furnaces, allowing recyclers to extract gold, silver, and copper from old electronics. What really impresses customers, though, is GreenCycle's commitment to innovation. They invest 20% of their revenue back into R&D, and their engineers are constantly tweaking designs based on customer feedback. Just last year, they released a mobile version of the LiMelt—perfect for on-site battery recycling at electric vehicle factories. As one customer joked: "GreenCycle isn't just ahead of the curve—they're building the curve."

5. Industrial Heating Innovators (Chicago, IL)

Industrial Heating Innovators (IHI) has been a staple in Chicago's industrial scene since 1978, and for good reason: they build furnaces that last. IHI's medium frequency electric furnaces are known for their durability, with many units still running strong after 30+ years of daily use. It's a testament to their old-school commitment to quality—each furnace is built with heavy-gauge steel frames, high-grade copper coils, and components sourced from trusted American suppliers.

IHI specializes in large-capacity furnaces for heavy industries like shipbuilding, construction, and mining. Their MegaMelt series, with capacities ranging from 10 to 50 tons, is a workhorse for steel mills and scrap metal yards processing thousands of pounds of material daily. What customers love most about IHI is their no-nonsense approach. They don't overload their furnaces with flashy features—just reliable performance and easy maintenance. Need to ｒｅｐｌａｃｅ a coil? IHI ships parts the same day, and their instruction manuals are written in plain English, not engineering jargon.

But don't let their focus on durability fool you—IHI is also keeping up with modern demands. They recently introduced a line of energy-efficient furnaces that use 20% less electricity than their older models, and they offer retrofitting services to upgrade existing furnaces with new control systems. One of their most popular add-ons is an automated loading system that reduces labor costs by letting a single operator manage multiple furnaces. As a shipyard manager in Louisiana put it: "We've got IHI furnaces that are older than my kids, and they still outperform the new ones we bought from other suppliers. You can't put a price on that kind of reliability."

6. National Metal Processing (Houston, TX)

National Metal Processing (NMP) is all about serving the heart of American industry: the Gulf Coast. Founded in 1995 in Houston, NMP started by supplying furnaces to oil and gas companies for pipeline manufacturing. Today, they've expanded to serve a wide range of industries, but their focus remains on meeting the unique needs of regional businesses—from Texas refineries to Louisiana chemical plants.

NMP's medium frequency furnaces are built to handle the tough conditions of industrial environments. Their CoastalGuard series, for example, is designed to resist corrosion from the Gulf's humid air and saltwater breeze—a must for plants near the coast. These furnaces also come with heavy-duty filters to protect internal components from dust and debris, ensuring long life even in dirty workspaces. But NMP isn't just about durability; they're also known for their fast delivery times. With a massive manufacturing facility in Houston, they can often have a custom furnace built and shipped within 6–8 weeks, a lifesaver for businesses with tight deadlines.

NMP also offers a range of complementary equipment, including cable recycling equipment for processing scrap copper wires from electrical projects and hydraulic press machines for shaping molten metal into ingots. What really sets them apart, though, is their local support. They have sales and service teams across the Gulf Coast, so if you run into a problem, a technician can be on-site within hours. As a refinery manager in Corpus Christi put it: "NMP gets it. They know our industry, they know our deadlines, and they never let us down."

7. Advanced Melting Technologies (Phoenix, AZ)

Rounding out our list is Advanced Melting Technologies (AMT), a Phoenix-based supplier that's making waves with its innovative approach to energy efficiency. Founded in 2008, AMT was born out of frustration with the high energy costs of traditional furnaces. Their team of engineers set out to build a medium frequency electric furnace that could melt metal using less power—and they succeeded. AMT furnaces are now some of the most energy-efficient on the market, with some models achieving up to 90% energy conversion efficiency.

AMT's EcoVolt series uses a patented induction coil design that minimizes heat loss, meaning more of the electricity you pay for goes into melting metal, not heating the workshop. For a scrapyard in Arizona, where electricity costs can spike in the summer, this translates to savings of $10,000+ per year. But AMT doesn't stop at efficiency; they also prioritize user safety. Their furnaces come with features like automatic shutoffs if temperatures get too high, insulated doors to prevent burns, and noise reduction technology that keeps workspaces quieter.

AMT is also a leader in serving emerging industries, like lithium-ion battery recycling. Their LiRecover furnace is designed to safely melt down battery components, extracting valuable metals like lithium, cobalt, and nickel for reuse in new batteries. It's a critical tool as the demand for electric vehicles and renewable energy storage grows. Plus, AMT offers training programs to help recyclers get up to speed on battery processing, ensuring they can maximize recovery rates and stay compliant with regulations.

What really makes AMT stand out, though, is their commitment to transparency. They publish detailed energy efficiency reports for each furnace model, so customers know exactly what they're getting. And their pricing is straightforward, with no hidden fees. As a startup battery recycler in Nevada put it: "AMT didn't just sell us a furnace—they helped us build a sustainable business. Their efficiency and support have been game-changers for our bottom line."