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Olympic Kilns DD12 Gas Kiln

SKU DD12
$11,130.00
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Made to Order: Kilns are built after ordering to your exact specifications. Current estimate is 8–12 weeks.
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Olympic Kilns · Gas Kiln · Downdraft Front-Loading Olympic DD12 Downdraft Gas Kiln Model DD12 · Natural Gas or Propane · 33″ W × 32″ D × 37″ H · 18.75 Cubic Feet · Cone 10 / 2350°F The DD12 is the next size up from our DD9 downdraft gas kiln, giving production studios and larger programs a bigger reduction-firing chamber without moving to industrial-scale equipment. Its 6-burner downdraft system pulls heat evenly down through the load before venting, giving more consistent cone-to-cone results across a taller stack than a comparable updraft kiln. Available factory-configured for natural gas or propane, the DD12 is built for serious, repeated Cone 10 reduction firing.
Maximum TemperatureCone 10 / 2350°F
Interior Capacity18.75 cubic feet
Chamber Dimensions33″ W × 32″ D × 37″ H
Fuel TypeNatural Gas or Propane
Key features
6-Burner Downdraft System Six 30,000 BTU/hr burners (300,000 BTU/hr total) pull heat down through the chamber before venting for even top-to-bottom firing.
Front-Loading Door Full front door access to the 27″ W × 28″ D × 31″ H setting area, with an optional rotating door for easier operation.
4.5″ Brick + 1″ Fiber Insulation High-temperature insulating firebrick with a ceramic fiber backup layer for efficient heat retention at Cone 10.
Adjustable Damper System Precision damper controls for atmosphere management during oxidation and reduction firing cycles.
Welded Steel Frame Reinforced structural steel frame designed for stability under high-temperature, high-BTU operation.
Cone-Viewing Ports Built-in peepholes with heat-resistant glass for visual pyrometric cone monitoring throughout the firing cycle.
Optional accessories
Blower Burner Upgrade Forced-air blower burners provide more consistent combustion and can improve firing speed and reduction control versus standard venturi burners.
Rotating Door Pivoting door hardware makes opening and closing this large, heavy door faster and easier during loading and unloading.
Chimney / Vent Hood Factory-matched hood and flue components sized for the DD12's exhaust volume, required for proper ventilation to code.
Digital Pyrometer & Electronic Controller Digital temperature readout and electronic ramp/hold control add repeatability and monitoring beyond manual cone-watching.
Kiln Furniture Kit High-alumina shelves and posts sized for the 27″ × 28″ setting area to maximize stacking efficiency on production loads.
Additional Shelves Extra cordierite or high-alumina shelves sized to the setting area for increased loading flexibility across firing schedules.
Gas Pressure Regulator Precision regulator matched to the DD12's 300,000 BTU/hr rating for consistent burner performance at either fuel pressure.
Kiln Wash Protective shelf coating prevents glaze adhesion and extends shelf life during high-fire ceramic production.
Emergency Parts Kit Spare burner tips, orifices, thermocouple, and flame retention components for maintenance and emergency repairs.
DD12 Furniture Kit (Factory) Olympic's matched furniture kit built specifically for the DD12 and DD12 Car kiln setting areas, sold as a complete set.
Controller upgrade
Digital Pyrometer & Electronic Controller — Olympic KilnsRecommended
Because the DD12 is gas-fired, it doesn't use the electric-element Genesis or KilnStar controllers found on Olympic's electric kilns. Instead, the standard setup relies on manual damper adjustment and pyrometric cone-watching through the viewing ports. The optional electronic controller package adds a digital pyrometer with precise temperature readout plus ramp/hold assistance, giving you far more repeatable, documented firings without having to babysit cones through the entire cycle.
  • Digital temperature readout from a high-temperature thermocouple
  • Ramp/hold assistance for more consistent, repeatable reduction firings
  • Reduces the need for constant manual cone-watching during long firing cycles
  • Pairs with the optional blower burner upgrade for tighter combustion control
  • Firing data helps diagnose burner or damper issues between firings
  • Installed and calibrated at the factory before shipment
Common questions
How does the DD12 compare to the DD9 we already carry?
The DD12 is the next size up from our DD9 downdraft gas kiln — 18.75 cubic feet versus the DD9's 15 cubic feet, with a larger 33″ × 32″ × 37″ chamber and six burners instead of a smaller burner count. Both share the same downdraft firing pattern, front-loading design, and Cone 10 capability. Choose the DD12 if you're outgrowing the DD9's capacity or running a higher volume of production work; choose the DD9 if floor space or gas supply is more limited.
Can I convert this kiln between natural gas and propane?
The DD12 is configured at the factory for either natural gas or propane — you must specify which fuel type you need when ordering, since orifice size and gas pressure differ between the two (9/64″ orifice at 7″ water column for NG versus #40 orifice at 11″ water column for LP). Converting between fuel types after purchase requires replacing burner orifices and adjusting gas pressure settings, and should only be performed by a qualified gas kiln technician.
What are the installation requirements for the DD12?
The DD12 requires a 1″ gas supply line sized for its 300,000 BTU/hr total burner output, correct gas pressure regulation for your chosen fuel, and a properly sized chimney/flue system that exhausts combustion gases safely to the exterior. Installation must comply with local building and gas appliance codes. We strongly recommend a licensed gas fitter and an experienced kiln installer, plus a stable, level, non-combustible floor with adequate clearance from walls and combustible materials.
Do I need to purchase kiln furniture separately?
Yes, kiln furniture is not included with the DD12 and must be purchased separately. For the 27″ × 28″ setting area, you'll typically need 6-8 or more shelves and a full assortment of posts in varying heights to build efficient stacking configurations for production loads. Contact Peach State Pottery for a furniture kit recommendation, or ask about Olympic's matched DD12 furniture kit.
How is the Olympic kiln warranty activated?
Olympic Kilns provides a one-year limited warranty that must be registered within 30 days of delivery. The warranty is only valid when purchased through an authorized dealer like Peach State Pottery. Register your kiln directly with Olympic Kilns after delivery using the serial number and purchase documentation. The warranty covers manufacturing defects but does not cover damage from improper installation, misuse, or normal wear components like burner orifices.
Not sure if the DD12 is the right kiln for your studio? Our team can help you evaluate gas line requirements, ventilation needs, and whether this capacity matches your production volume.
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About this kiln
Best for: Serious hobbyists, home studio potters, and small production studios who need a reliable, high-fire American-made kiln with full manufacturer support and room to grow.
🔨 Lead time
8–12 weeks
Made to order — built to your exact voltage and controller selections after ordering.
✓ Warranty
Manufacturer warranty
Full coverage included. We are here if anything goes wrong after your order.
Why buy from Peach State Pottery?
Authorized Olympic Kilns Dealer
No sales tax outside Georgia
Free shipping included
Real support before & after order
Military discount for veterans
We are here if anything goes wrong
Call or text us:✆ (470) 264-3563
Production batches fill quickly
Placing your order now secures your spot in the current production batch and locks in today's pricing. Lead times can extend during busy periods.