Evenheat Knife Oven - KO 22.5
by Evenheat
Save $665.01
Original Price
$3,325.00
Current Price
$2,659.99
Free Freight Delivery Included
✓ No sales tax outside GA
✓ Liftgate included free
✓ Authorized dealer
Made to Order: EvenHeat kilns are built after ordering. Current estimate is 4–6 weeks. We confirm all details after your order is placed.
Questions? Call or text us at (470) 264-3563
- 1 We submit your kiln order for production with the manufacturer.
- 2 We confirm the current estimated lead time and keep you updated.
- 3 Your kiln is built to your specifications and prepared for freight shipment.
- 4 We send tracking and delivery instructions once your kiln ships.
Evenheat · Heat Treating Oven · KO Series
Evenheat Knife Oven - KO 22.5
The KO 22.5 is Evenheat's second deepest knife oven, purpose-built for heat treating long, heavy blades and high-mass steel loads. Engineered with 3" firebrick insulation and special high-temperature alloy elements, this side-opening oven delivers faster heat-up times and precise temperature control up to 2400°F. The 180° swing-out door design keeps the super-heated door safely away from you during critical quenching operations.
Max Temp2400°F
Chamber22.5" Deep
Voltage240V
Insulation3" Firebrick
What’s included
Side-Opening Door with 180° SwingFull side-swing door design keeps the super-heated door well away from you during quenching operations. Opens a full 180° for maximum clearance and safety.
Cool-Touch Phenolic HandleSpring-loaded, one-handed door latch positioned at the front of the door for easy grasp. Stays cool to the touch even during high-temperature operation.
3" Thermal Ceramics FirebrickPremium insulating firebrick made exclusively in Augusta, Georgia. Thicker than standard 2.5" brick for faster heat-up and superior heat retention.
High-Temperature Alloy ElementsSpecial element wire alloy normally reserved for high-fire ceramic kilns. Engineered to reach and maintain 2400°F maximum temperature.
Reinforced Stand with Tool RestHeavy-duty upgraded stand design with integrated tool rest for convenient placement of tongs, gloves, and other heat treating tools.
Door ShieldProtective shield reduces temperature at the door surface and handle while protecting firebrick from mechanical damage during operation.
Technical specifications
ModelKO 22.5
SKUEH-KO-225
Chamber dimensions22.5" depth (specific width/height not provided)
Cubic feetContact for specifications
Maximum temperature2400°F (1316°C)
Voltage240V
AmperageContact for specifications
WattsContact for specifications
Brick thickness3 inches
Estimated shipping weightContact for specifications
Warranty2-year limited (registration required within 30 days)
Optional accessories
Quiet Drive Solid State Relay SystemPatented solid state relay technology with no moving parts. Fires 60 times per second for ultra-tight temperature control and whisper-quiet operation.
Additional Shelves or RacksCustom shelving solutions for organizing multiple blades or parts within the chamber. Contact us for configurations that fit your workflow.
Thermocouple UpgradesPremium thermocouple options for enhanced temperature accuracy and longer service life in demanding heat treating applications.
Replacement Door GasketKeep a spare high-temperature door gasket on hand to maintain chamber seal integrity and energy efficiency over time.
Heat Treating Tool KitSpecialized tongs, gloves, and handling tools designed for safely loading and unloading steel from high-temperature ovens.
Swing View Control EnclosureAdjustable pivoting control enclosure that lets you rotate the controller to your ideal viewing angle, then lay it back down for across-the-shop visibility.
Controller upgrades
TAP Touchscreen — SDS IndustriesTop Tier
For knife makers running complex heat treating cycles, the TAP touchscreen delivers unlimited programming flexibility and complete remote monitoring via smartphone. The TAP mobile app lets you track critical temperature ramps from anywhere in the shop and sends push notifications when your quench window arrives.
- Unlimited programs and firing steps
- TAP mobile app — monitor from your phone
- Push notifications when firing completes
- Adjust temp or add time mid-firing
- Auto-updates over Wi-Fi
- Firing logs and maintenance schedules
Genesis Spark — Bartlett InstrumentsGreat Value
The Genesis Spark offers serious heat treating capability at a mid-range price point, with 30 programmable heat treat cycles and real-time firing adjustments. The color touchscreen interface makes programming austenitizing and tempering cycles straightforward, with Wi-Fi connectivity for firmware updates.
- 30 programs × 32 segments each
- 3.2″ color touchscreen display
- Wi-Fi for remote updates and diagnostics
- Cone fire and ramp/hold modes
- Preheat capability built in
- Adjust firing in real time
Common questions
What's the advantage of the 3-inch firebrick over standard insulation?The 3" Thermal Ceramics firebrick in the KO Series provides a half-inch more insulation than standard 2.5" brick, resulting in faster heat-up times, better heat retention, and lower energy costs. This extra insulation is especially important when heat treating high-mass loads or running back-to-back cycles. The thicker brick also enables the oven to reach and maintain the full 2400°F maximum temperature more efficiently.
Why is the side-opening door design better for heat treating?When you open a drop-down door on a front-loading oven, the super-heated door is directly in your path as you try to remove hot steel for quenching. The KO's side-swing design opens a full 180° to move the door completely out of your way, giving you a clear, safe path to quickly extract your work. This matters most during time-critical quenching operations where seconds count and you need both hands free to handle tongs safely.
Can this oven handle the heat treating requirements for high-alloy tool steels?Yes. The 2400°F maximum temperature covers the austenitizing range for virtually every knife steel you'll encounter, including high-alloy tool steels like CPM-154, S30V, S35VN, and even air-hardening steels like A2 and D2. The special high-temperature element alloy borrowed from ceramic kiln design ensures reliable performance at these extreme temperatures. Most carbon and stainless blade steels require significantly less than 2400°F, so you'll have plenty of headroom.
What does "second deepest" mean and what length blades will fit?The KO 22.5 has a 22.5-inch deep chamber, making it Evenheat's second deepest model in the KO line (only the largest model is deeper). This depth accommodates long blades, swords, and multiple smaller knives arranged front-to-back. For specific internal dimensions and capacity planning for your work, contact us with your typical blade lengths and we'll confirm fitment and suggest the optimal rack configuration.
Does buying from Peach State Pottery affect my warranty?No. We are an authorized Evenheat dealer. Your two-year warranty is fully valid and you have direct access to Evenheat’s support team. Buying from an unauthorized seller can void your warranty entirely.
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