ALUMINUM ELECTRIC -
HOLDING FURNACE
EH-C SERIES
The EH-C Series electric holding furnace features a pneumatic cover for easy maintenance access. The lining is cast out of premium quality, high heat durable refractory with a secondary layer of refractory fiberboard. Like all our Dynamo furnaces, the EM-C Series is controlled by a PLC and a color HMI touch screen which optimizes performance and efficiency.
TECHNICAL OVERVIEW
The EH‑C Series is engineered for aluminum foundries and die‑casting plants that require exceptionally stable, clean, and energy‑efficient molten metal holding. Its immersion‑heater side‑well design delivers direct heat transfer into the melt, ensuring fast thermal response and uniform temperature distribution across the entire holding chamber. The furnace’s robust refractory structure minimizes heat loss, while the insulated cover reduces oxidation and dross formation. With its clean electric heating, low maintenance requirements, and precise temperature control, the EH‑C Series is ideal for operations that demand consistent molten metal quality and uninterrupted production.
Electric holding furnaces offer major advantages in melt cleanliness, temperature accuracy, and operating efficiency. The EH‑C Series eliminates combustion byproducts entirely, preventing hydrogen pickup and oxidation — two leading causes of porosity in aluminum castings. Its side‑well immersion heating system isolates the heaters from turbulence and contaminants, extending heater life and improving melt quality. Compared to gas‑fired systems, the EH‑C Series operates quietly, consumes less energy, and requires significantly less maintenance. For foundries seeking clean holding, long‑term reliability, and lower operating costs, the EH‑C Series is the superior choice.
The EH‑C Series combines advanced immersion‑heating technology with a durable, high‑capacity holding chamber. Its side‑well heater configuration ensures excellent heat transfer while protecting the heating elements from direct metal flow and mechanical wear. The furnace is built with high‑grade refractory materials for outstanding insulation and long service life. Optional PLC controls and HMI interfaces provide precise temperature regulation, diagnostics, and real‑time monitoring. A well‑insulated cover minimizes heat loss and improves energy efficiency. With its clean heating method, large holding capacity, and low maintenance requirements, the EH‑C Series is a dependable solution for aluminum casting operations that require continuous molten metal supply.
HIGHEST RETURN ON INVESTMENT
We Give You More Furnace For Your Money.
To be competitive today’s economy requires that manufacturers run their operations more efficiently and cost effectively than ever before. We offer the highest ROI (return on investment) in the industry. Dynamo gives you high-quality products for a reasonable investment and with more features than any other company. Simply put, we give you the most for your money!
THICKER INSULATION
We Add Way More Insulation to Our Furnaces Than Most Manufacturers.
The result is even greater efficiency and a solid, sturdy construction which is hard to beat.
HIGH THERMAL EFFICIENCY BY DESIGN
We Add Multiple Layers of Insulation.
The result is excellent efficiency which means a furnace which not only burns less gas, but is actually not dangerous to touch.
EASY TO OPERATE INTERFACE
Greater Control - Means Greater Efficiency.
Our EH-C Series holding furnaces feature state-of-the-art PLC control with large color HMI screens with easy-to-read graphics - all at no extra charge. See in real time all furnace functions and change any setting on the fly. Now that's control.
SILICON CARBIDE HEATING RODS
Superior Quality and Long Life.
Our silicon carbide radiant heating rods (tubes) feature extended lifetime and durability when compared to regular coil elements.
HIGH QUALITY COMPONENTS
We Use Brand Name Components You Know and Already Use.
We use only the finest quality components that are open source and readily available locally in your area, or from our online parts store.
REMOTE SERVICE
We Can Remotely Troubleshoot Your Furnace from Our Facility.
Our EH-C Series holding furnaces include a Remote Connectivity Unit which allows our furnace technicians to remotely check the performance of the furnace, make any needed changes to the program or HMI, or to troubleshoot it directly from our service center. The customer is only required to connect the unit to the Internet via an Ethernet cable. We handle the rest.
INDUSTRY 4.0 REMOTE MONITORING
Remotely Monitor Your Furnace Performance From Any Device.
Our EH-C Series holding furnaces include a Remote Connectivity Unit which allows our furnace technicians to remotely check the performance of the furnace, make any needed changes to the program or HMI, or to troubleshoot it directly from our service center. The customer is only required to connect the unit to the Internet via an Ethernet cable. We handle the rest.
NINE STANDARD SIZES
Flexible Range of Applications.
Available from 660 lbs melting per hour all the way to 6,600 lbs, the EH-C Series Holding furnaces allow for a wide range of applications.
| Item | US Standard (Al) | Metric Standard (Al) |
| Model | Hold | Hold |
| EH-C-660 | 660 lb | 300 kg |
| EH-C-1100 | 1100 lb | 500 kg |
| EH-C-1300 | 1300 lb | 600 kg |
| EH-C-1750 | 1750 lb | 800 kg |
| EH-C-2200 | 2200 lb | 1000 kg |
| EH-C-2600 | 2600 lb | 1200 kg |
| EH-C-3300 | 3300 lb | 1500 kg |
| EH-C-4400 | 4400 lb | 2000 kg |
| EH-C-6600 | 6600 lb | 3000 kg |
DIFFERENT SIZE?
Let Us Make One for You.
Tell us your requirements and we will be glad to work with you to give you exactly what you need.
Applications For The EH-C Series Electric Aluminum Holding Furnace
The EH‑C Series is engineered for foundries that require exceptionally stable molten aluminum for continuous casting operations. Its side‑well immersion heaters deliver uniform heat directly into the melt, preventing temperature drift and ensuring consistent metal fluidity. This stability improves casting quality, reduces scrap, and supports uninterrupted production across multi‑station casting lines.
Die‑casting operations depend on precise molten metal temperatures to achieve consistent fill characteristics and reduce porosity. The EH‑C Series provides the thermal stability required for both HPDC and LPDC cells. Its clean electric heating eliminates combustion byproducts, ensuring a low‑oxidation melt that enhances die‑casting performance, reduces defects, and improves part integrity.
In facilities with multiple casting machines, the EH‑C Series serves as a central molten metal reservoir, ensuring each workstation receives aluminum at the correct temperature. The side‑well design isolates the heaters from turbulence and metal flow, extending heater life and maintaining melt cleanliness. This improves workflow efficiency and prevents production delays caused by temperature fluctuations or melt shortages.
Before aluminum is transferred to molds or casting machines, it must be held at a stable temperature to ensure proper fluidity and metallurgical consistency. The EH‑C Series provides a controlled environment for temperature conditioning after alloying, degassing, or fluxing. Its precise temperature control helps maintain alloy chemistry, reduce oxidation, and improve the mechanical properties of finished castings.
The EH‑C Series is well‑suited for foundries that rely on manual or ladle‑based casting processes. Its large holding capacity and consistent temperature control ensure that molten aluminum remains at optimal pouring temperature throughout the shift. This improves mold fill quality, reduces cold shuts, and enhances surface finish in gravity, sand, and permanent‑mold castings.
Electric holding furnaces are inherently energy‑efficient, and the EH‑C Series maximizes this advantage with immersion heaters that deliver heat directly into the melt. The side‑well configuration improves heater protection and thermal transfer efficiency, while the insulated cover and refractory lining minimize heat loss. For high‑volume foundries seeking to reduce operating costs, the EH‑C Series offers a highly economical solution.
Foundries that melt aluminum in batches benefit from the EH‑C Series as a reliable molten metal storage unit. After a batch is melted in a primary furnace, the EH‑C Series maintains the metal at temperature for extended periods, allowing operators to pour on demand. This is especially valuable for multi‑shift operations where melt availability must remain consistent even during downtime or changeovers.
The EH‑C Series is ideal for facilities that require a high‑capacity holding furnace with minimal maintenance requirements. With no burners, fuel trains, or combustion‑air systems, electric heating dramatically reduces routine service needs. The side‑well immersion heaters are protected from direct turbulence, extending their service life. Combined with robust refractory construction, the EH‑C Series delivers long‑term reliability for demanding industrial environments.
Frequently Asked Questions About The EH-C Series Electric Aluminum Holding Furnace
The EH‑C Series provides exceptionally clean and stable holding performance because it uses immersion electric heaters instead of combustion. With no burners, no flame, and no exhaust gases, the furnace eliminates oxidation and hydrogen pickup — two major contributors to porosity in aluminum castings. Electric heating also delivers superior temperature uniformity, lower operating noise, and dramatically reduced maintenance. For foundries prioritizing melt cleanliness, energy efficiency, and long‑term reliability, the EH‑C Series offers a clear advantage over gas‑fired holding furnaces.
Side‑well immersion heaters transfer heat directly into the molten aluminum, providing fast thermal response and exceptional temperature uniformity. Because the heaters are positioned in a dedicated side chamber, they are protected from turbulence, dross, and mechanical wear. This configuration reduces temperature gradients, minimizes dross formation, and maintains stable melt fluidity throughout the holding cycle — essential for high‑volume casting operations that require consistent metallurgical performance.
Yes — the EH‑C Series is engineered to support a wide range of aluminum casting processes, including HPDC, LPDC, gravity casting, sand casting, and permanent‑mold casting. Its large holding capacity and precise temperature control ensure that molten aluminum remains at optimal pouring temperature across long production runs. This improves mold fill characteristics, reduces cold shuts and porosity, and enhances overall casting quality.
The EH‑C Series is compatible with all common foundry aluminum alloys, including A356, A380, 319, 6061, and other Al‑Si and Al‑Mg compositions. Its clean electric heating prevents contamination and overheating, helping preserve alloy chemistry and mechanical properties. Whether used for automotive components, structural castings, or general foundry work, the EH‑C Series maintains alloy integrity throughout the holding cycle.
Yes — EH‑C Series electric aluminum holding furnaces are available throughout the United States, Canada, and Mexico. Aluminum foundries, die‑casting plants, and industrial casting facilities rely on these furnaces for high‑capacity molten metal supply, low operating costs, and dependable long‑term performance. Regional availability ensures faster delivery, reliable technical support, and access to replacement parts. Units can be configured with various capacities, immersion‑heater ratings, and control options to meet specific production requirements.
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