The difference between an electric kiln and a gas kiln is not how hot they get. Both will reach stoneware temperatures without complaint, and a well-built kiln of either type will hold cone 10. The difference is atmosphere, and atmosphere is the single biggest lever a potter has over how glazes and clay bodies actually look. An electric kiln heats by running current through resistance elements coiled into grooves in the brick. There is no combustion, nothing consumes oxygen inside the chamber, and air moves in freely. The result is an oxidation atmosphere, meaning plenty of available oxygen throughout the firing. Metal oxides in glazes stay fully oxidized and produce their oxidized colors, which are clean, bright, and above all repeatable. With a digital controller you can write a schedule with specific ramp rates, holds, and controlled cooling, press start, and get the same result next month. A gas kiln heats by burning fuel, usually natural gas or propane, at burner ports. Because combustion consumes oxygen inside the chamber, the potter gains a control that electric firing does not offer. By richening the fuel to air ratio and closing the damper, you can make the kiln burn with insufficient oxygen. The atmosphere fills with carbon monoxide, which is chemically hungry and will strip oxygen out of the metal oxides in the glaze and the clay body. That is reduction. What reduction does is genuinely hard to replicate any other way. Iron is the clearest example. In oxidation, iron in a glaze reads as amber, honey, or warm brown. In reduction it converts to a lower oxidation state and produces the cool blue greens of classic celadon. Copper is even more dramatic. In oxidation copper gives you greens and turquoise. In reduction it can give copper red, oxblood, and the deep sang de boeuf reds that potters have chased for centuries. Shino glazes depend on reduction and carbon trapping for their characteristic mottled oranges, greys, and carbon smoke. Tenmoku, iron saturate blacks that break to rust at the rim, are reduction glazes. Beyond the glaze itself, reduction toasts the clay body. Iron in an exposed stoneware body flashes to warm orange and brown, and iron or manganese specks bleed halos into the glaze above them. The whole surface takes on a depth and variability that oxidation firing tends to flatten out. That variability cuts both ways. Reduction firing is not fully repeatable. Two loads of the same glaze fired weeks apart can look different depending on how heavy the reduction was, where the piece sat in the kiln, and how the cooling went. Some potters consider that the entire point and would not trade it. Others find it maddening, especially anyone trying to fill a wholesale order of matching mugs. Cost splits in an unintuitive way. Electric kilns are cheaper to buy, often by a large margin, and they arrive ready to plug in. Gas kilns cost more up front, whether purchased or built, and they need burners, a gas line, refractory, and a chimney. Running costs can go the other direction, since gas is frequently cheaper per firing than electricity depending on local utility rates. Electric kilns also carry a recurring consumable cost that new owners underestimate: elements degrade and eventually need replacing, and firing repeatedly to cone 10 wears them dramatically faster than firing to cone 6. Many studios choose cone 6 for exactly this reason. Installation and venting is where the decision is usually made for you. An electric kiln needs a dedicated high-amperage 240 volt circuit, real clearance from combustible walls, and ventilation. Even though nothing burns, the ware itself releases sulfur compounds, fluorine, and organic fumes during firing, so a downdraft vent system or an overhead hood is not optional. Beyond that it will live indoors in a garage, basement, or studio room without much drama. A gas kiln is a combustion appliance. It needs a flue or chimney, adequate combustion air, a gas supply line, and in most cases either an outdoor location or a dedicated fire-rated room. It brings the fire marshal, the building department, the insurance company, and the landlord into the conversation. In leased urban space, gas is often simply not permitted, and that ends the discussion before the aesthetics are even considered. Carbon monoxide monitoring is mandatory anywhere a fuel kiln operates near people. There is also a labor difference. An electric firing with a controller runs itself, and you check it rather than operate it. A gas firing requires a person present for the whole cycle, adjusting burner pressure and damper position, watching cones through the spy holes, and judging reduction by flame and back pressure. That is often ten or more hours of attention. For a studio paying staff, that is a real recurring cost, and it is a large part of why electric kilns dominate teaching studios. That combination of lower capital cost, simpler permitting, better repeatability, and no staffing requirement explains why most studios run electric. It also helps that cone 6 oxidation glazes have improved enormously. The old assumption that serious work required cone 10 reduction has not held up, and there are now deep, layered, complex mid-fire oxidation glazes that hold their own on any table. There are partial workarounds too, including glazes formulated to imitate reduction effects and small amounts of silicon carbide added to a glaze to generate localized reduction, though that trick can be rough on elements and is not something to try casually in a shared kiln. The recommendation is fairly clean. If you are equipping a home studio or a teaching studio, want reliable results, need to fire on a schedule, and are making functional ware, buy an electric kiln with a good controller and standardize on cone 6. If your work genuinely depends on copper reds, celadons, shinos, or a flashed and toasted clay surface, no electric kiln will get you there and you need a fuel kiln, with all the siting and permitting that implies. Raku, salt, soda, and wood firing are separate fuel-based atmospheres with their own effects and their own requirements, and are worth seeking out as workshops rather than as a first kiln purchase. When our studio opens, our classes will cover how atmosphere changes a glaze, how to read a firing, and how to choose glazes that suit the kiln you actually have access to.
The Key Differences
Understanding electric vs gas kiln helps you make informed decisions about your pottery journey. Whether you are researching before your first class or looking to deepen your knowledge, this comparison covers what matters.
What This Means at OKC Pottery Studio
At our Oklahoma City studio, we offer the equipment and instruction to explore both sides of this comparison. 18 Shimpo wheels, 4 kilns (electric and gas), 45+ glazes. Our instructors help you understand the nuances.
Learn More
Join our waitlist for studio updates and first access to classes. Oklahoma City's ceramics community is growing, and we are building the studio it deserves.