ALUMINUM GAS -
HOLDING FURNACE
GH-A SERIES
GH-A Series are suitable for metal casters around the world including sand casting, high pressure die casting, low pressure, permanent mold, gravity, investment casting and lost foam foundries.
TECHNICAL OVERVIEW
The GH‑A Series is engineered to maintain aluminum at precise holding temperatures for extended periods, ensuring a stable, ready‑to‑pour molten metal supply for casting operations. Its high‑efficiency gas burner system delivers uniform heat distribution around the holding chamber, minimizing temperature fluctuations and preventing metal freezing or overheating. The furnace’s robust refractory lining provides excellent thermal retention, reducing fuel consumption and maintaining consistent melt quality throughout the shift. With its durable construction, simple operation, and low maintenance requirements, the GH‑A Series is an ideal holding solution for aluminum foundries, die‑casting plants, and continuous casting lines that demand reliable molten metal availability.
Using a melting furnace for both melting and holding often leads to excessive fuel consumption, inconsistent temperatures, and unnecessary wear on the melting equipment. The GH‑A Series solves these issues by providing a dedicated holding environment optimized for thermal stability rather than rapid heat‑up. Its gas‑fired system maintains tight temperature control with lower energy usage, while the stationary design minimizes mechanical wear. By separating melting and holding functions, foundries achieve better melt quality, improved casting consistency, and longer equipment life. For facilities seeking efficiency, process stability, and reduced operating costs, a dedicated holding furnace like the GH‑A Series is the superior choice.
The GH‑A Series combines fuel‑efficient gas heating with durable industrial construction to deliver long‑term holding performance. Its high‑efficiency burner system ensures uniform chamber temperatures, while thick refractory insulation maximizes heat retention and minimizes fuel usage. The furnace’s stationary design provides excellent structural stability and low maintenance requirements. Optional digital temperature controllers, safety interlocks, and level sensors enhance process reliability and operator safety. With its consistent temperature control, low operating costs, and robust build quality, the GH‑A Series is a dependable holding solution for aluminum casting operations of all sizes.
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.
CHOOSE YOUR CONTROL SYSTEM
We Give You Options of PLC & HMI.
Select the control system that is best for you and easiest for your maintenance team.
PNEUMATIC LID
Makes for Easy Cleanout.
Our simple pneumatic lid opening system allows for easy access to the furnace interior and for cleanout. The clamshell design is simple and effective.
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 GH-A 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.
As an option, all our furnaces are available with Industry 4.0 remote performance monitoring units which feature a custom dashboard. You can not only monitor furnace performance, but you can be notified before an issue occurs. Included are condition based maintenance reminders and shift performance statistics. Minimize impact of emergencies and maximize furnace uptime, and productivity. See what is going on with the furnace and your production from any device, anywhere in the world.
TEN STANDARD SIZES
Flexible Range of Applications.
Available from 660 lbs melting per hour all the way to 6,600 lbs, the GH-A Series Holding furnaces allow for a wide range of applications.
| Item | US Standard (Al) | Metric Standard (Al) |
| Model | Hold | Hold |
| GH-A-660 | 660 lb | 300 kg |
| GH-A-1100 | 1100 lb | 500 kg |
| GH-A-1300 | 1300 lb | 600 kg |
| GH-A-1750 | 1750 lb | 800 kg |
| GH-A-2200 | 2200 lb | 1000 kg |
| GH-A-2600 | 2600 lb | 1200 kg |
| GH-A-3300 | 3300 lb | 1500 kg |
| GH-A-4400 | 4400 lb | 2000 kg |
| GH-A-5500 | 5500 lb | 2500 kg |
| GH-A-6600 | 6600 lb | 3000 kg |
DO YOU NEED A 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 GH-A Series Gas Aluminum Holding Furnace
The GH‑A Series is engineered to maintain aluminum at precise holding temperatures for extended periods, ensuring a stable, ready‑to‑pour molten metal supply. This makes it ideal for continuous casting lines, permanent‑mold casting cells, and multi‑station workflows where uninterrupted metal availability is essential. Its high‑efficiency gas burner system minimizes temperature fluctuations, improving casting consistency and reducing scrap rates.
Die‑casting operations require molten aluminum at tightly controlled temperatures to achieve consistent fill characteristics and reduce porosity. The GH‑A Series provides the thermal stability needed to support both high‑pressure die‑casting (HPDC) and low‑pressure die‑casting (LPDC) cells. By separating melting and holding functions, foundries reduce cycle‑time variation, improve casting quality, and extend the life of their melting furnaces.
In facilities with multiple casting stations, the GH‑A Series serves as a centralized molten metal buffer, ensuring each workstation receives aluminum at the correct temperature. This improves workflow efficiency and prevents production delays caused by melt shortages or temperature drift. The furnace’s robust insulation and efficient burner system maintain consistent metal conditions even during peak demand.
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 GH‑A Series provides a controlled environment for temperature conditioning, allowing operators to stabilize the melt after alloying, degassing, or fluxing. This results in improved casting accuracy, reduced defects, and better mechanical properties in finished parts.
The GH‑A Series is well‑suited for foundries that rely on manual or ladle‑based casting processes. Its stationary design 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.
Holding aluminum at temperature can be one of the most energy‑intensive stages of the casting process. The GH‑A Series addresses this with high‑efficiency gas burners and thick refractory insulation that minimize heat loss. By using a dedicated holding furnace instead of relying on a melting furnace for both tasks, facilities significantly reduce fuel consumption and extend equipment life — a major advantage for cost‑sensitive operations.
Foundries that melt aluminum in batches benefit from the GH‑A Series as a reliable molten metal storage unit. After a batch is melted in a primary furnace, the GH‑A Series maintains the metal at temperature for hours, allowing operators to pour on demand. This is especially valuable for shift‑based production, where melt availability must remain consistent even during downtime or changeovers.
The GH‑A Series is ideal for facilities that require a dependable holding furnace with minimal maintenance requirements. Its stationary design has fewer mechanical components than tilting or automated systems, reducing wear and extending service life. The gas burner system is easy to maintain, and the furnace’s robust refractory lining ensures long‑term thermal performance. This makes the GH‑A Series a practical, reliable holding solution for small and medium aluminum casting operations.
Frequently Asked Questions About The GH-A Series Gas Aluminum Holding Furnace
The GH‑A Series is purpose‑built for holding, not melting — and that distinction matters. Using a melting furnace for both tasks leads to excessive fuel consumption, temperature instability, and accelerated refractory wear. The GH‑A Series maintains aluminum at a stable holding temperature with far lower energy usage, thanks to its high‑efficiency gas burner system and thick refractory insulation. This results in improved casting consistency, reduced operating costs, and extended equipment life across the entire melt shop.
The GH‑A Series uses a high‑efficiency gas burner system that delivers uniform heat distribution around the holding chamber. Combined with robust refractory insulation, the furnace minimizes heat loss and prevents temperature drift. Optional digital temperature controllers allow operators to maintain precise holding temperatures throughout the shift. This stability ensures proper metal fluidity, reduces casting defects, and supports continuous production without interruptions.
Yes — the GH‑A Series is designed to support a wide range of aluminum casting processes. Its stable temperature control makes it ideal for high‑pressure die‑casting (HPDC), low‑pressure die‑casting (LPDC), gravity casting, sand casting, and permanent‑mold casting. By providing a consistent molten metal supply, the furnace helps maintain cycle‑time uniformity, improves mold fill characteristics, and reduces defects such as cold shuts, porosity, and incomplete fills.
The GH‑A Series is compatible with all common foundry aluminum alloys, including casting grades such as A356, A380, 319, 6061, and other Al‑Si and Al‑Mg compositions. Its stable thermal environment prevents overheating and minimizes oxidation, helping preserve alloy chemistry and mechanical properties. Whether the operation involves automotive components, structural castings, or general foundry work, the GH‑A Series maintains alloy integrity throughout the holding cycle.
Yes — GH‑A Series gas 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 stable molten metal supply, low operating costs, and dependable long‑term performance. Regional availability ensures faster delivery, reliable technical support, and access to replacement parts. Furnaces can be configured with various capacities, burner systems, and control options to meet specific production requirements.
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