A gas kiln heats ware with burners fed by propane or natural gas, while an electric kiln heats with coiled metal elements. In the gas vs electric kiln choice, the difference that matters most to potters is the atmosphere: a gas kiln can be run short of oxygen (reduction), and an electric kiln fires with plenty of oxygen (oxidation). For a first home kiln, electric wins on install, safety and simplicity. A gas or propane kiln makes sense when you have outdoor space, local approval and a real reason to fire in reduction.
This comparison is research-based. It draws on kiln makers' published specs and manuals, Orton's cone chart and US fire and energy references. We did not fire these kilns, and this page gives no instructions for building or modifying burners. We do not cover DIY kiln builds; every gas kiln on this page is a commercially made model. Gas kilns must be installed and run exactly as their maker's manual and your local fire code require.
Gas kiln vs electric kiln at a glance
| Factor | Propane kiln | Natural gas kiln | Electric kiln |
|---|---|---|---|
| Heat source | Burners fed from a propane tank | Burners fed from a utility gas line | Coiled elements on a 120V or 240V circuit |
| Firing atmosphere | Oxidation or reduction | Oxidation or reduction | Oxidation |
| Typical location | Outdoors, shed or kiln shed with flue | Outdoors or dedicated kiln room with flue | Garage, basement or studio with maker's clearances |
| Venting | Flue, chimney or hood per maker; combustion gases | Flue, chimney or hood per maker; combustion gases | Room ventilation or a kiln vent for firing fumes |
| Permits | Often tank, gas line and fire code review | Often gas line and fire code review | Often an electrical permit for a new circuit |
| Control | Manual burner and damper adjustment, some with controllers | Manual burner and damper adjustment, some with controllers | Digital controller with preset cone programs |
| Learning curve | Steep; you watch and adjust the fire | Steep | Gentle; program and monitor |
Reduction vs oxidation: the real reason to choose gas
In a reduction firing, the kiln is run with less oxygen than the fuel needs, so the flame pulls oxygen from the clay and glaze. That changes the color of metal oxides. Copper can turn red instead of green, iron gives the blue-green of celadons and the warm toasty flashing on stoneware, and many classic cone 10 looks depend on it.
In oxidation, the kiln has plenty of oxygen. Colors are more predictable and repeatable, which is why most commercial cone 5 to 6 glazes are formulated and tested in electric kilns. Many modern glaze lines imitate reduction looks in oxidation. Our guides to reduction firing and oxidation firing go further.
Can you do reduction firing in an electric kiln?
Not true kiln reduction. An electric kiln has no flame to starve of air, and adding combustible material to create a reducing atmosphere attacks the elements and thermocouple, shortening their life. Check your kiln maker's manual and warranty before trying anything of the sort. What potters do instead is local reduction: a small amount of silicon carbide in a glaze reduces the glaze around it, a technique sometimes used for copper reds in electric kilns. Results vary, so test first.
Firing temperature: both reach cone 10
Gas and electric kilns both reach stoneware temperatures. Orton's chart puts cone 6 at 2,232°F (1,222°C) and cone 10 at 2,345°F (1,285°C) at a 108°F per hour final rate. Many home electric kilns are rated to cone 10, such as the Skutt KM-818 and Olympic MAS1823HE, while some 120V kilns stop at cone 6. Gas kilns are often built for cone 10 reduction, but check each model's rating. See how hot a kiln gets for more on cones.
Venting and where the kiln can go
A gas kiln burns fuel, so it produces combustion gases, including carbon monoxide, along with heat that leaves through a flue or chimney. That is why most gas kilns sit outdoors, in a kiln shed, or in a dedicated room built to the maker's ventilation and clearance specs. An attached garage is a poor fit unless the maker and your local fire official approve the setup.
Electric kilns also release fumes as clay and glaze materials burn off, especially during bisque firings, and they get hot on the outside. They need the maker's wall clearances and ventilation, but no flue for combustion. Whether you need a dedicated vent indoors is covered on our kiln vent guide.
Install a carbon monoxide alarm in any building near a fuel-burning kiln and in rooms next to an electric kiln that is vented indoors. Keep combustibles, solvents and stored propane cylinders well away from any kiln.
Permits, codes and inspections
Rules vary by city, county and state, so start with your local building department and fire marshal. For a gas kiln, expect questions about the gas line or tank, the regulator, setback distances from buildings and property lines, the flue, and the kiln's listing. Natural gas line work is usually done by a licensed plumber or gas fitter under a permit. Propane tanks are typically set up by the propane supplier, following NFPA 58 (the national propane code) as adopted locally.
For an electric kiln, the usual permit is for the new 240V circuit, installed by a licensed electrician. HOAs and landlords may have their own rules for either type. Our kiln insurance and permits guide covers the paperwork in more depth.
Insurance
Tell your home insurer before you install any kiln. Insurers may ask about the kiln type, location, clearances and whether it was installed under permit. A fuel-burning appliance with an outdoor propane tank is a bigger change to your property than a listed electric kiln on a permitted circuit, so expect more questions, and possibly an inspection or a policy change, with gas. Keep your permit sign-offs, the kiln's manual and its listing paperwork.
Propane safety for a home kiln
If you do choose a propane kiln, follow these basics alongside the maker's manual:
- Use only a commercially built kiln and burner system with its maker's instructions; do not build or alter burners.
- Have your propane supplier size and place the tank, regulator and supply line to local code.
- Keep propane cylinders outdoors and upright, never stored inside a house or attached garage.
- Ask the supplier how to check connections for leaks, and shut the supply off if you smell gas.
- Never leave a gas firing unattended, and keep a suitable fire extinguisher nearby.
- Keep the kiln area clear of anything that can burn, including dry leaves and overhanging branches.
Firing control and learning curve
An electric kiln with a digital controller runs a stored program. You choose bisque or glaze, a target cone and a speed, and the controller follows the schedule and shuts off at the end. That repeatability is why schools and beginners use electric kilns, and why most commercial glaze test results come from them.
A gas firing asks more of the potter. You light the burners by the maker's procedure, then adjust gas pressure, air and damper through the firing, watch cones through the spy hole, and decide when reduction starts and ends. Some gas kilns now have controllers, but many potters learn gas firing beside an experienced firer before running a kiln alone. Expect several firings of test pieces before results settle.
Are gas or electric kilns cheaper to run?
Sometimes, but not by default. Cost per firing depends on your local electricity and gas prices, the kiln's size and insulation, and how much heat a gas kiln loses up the flue. There is no single answer, so price your own case.
For electric, multiply the kiln's kilowatts by the firing hours to get the most it could use: a 6.4 kW kiln running a 10 hour firing could use up to 64 kWh, though the actual figure is lower because elements cycle on and off. Multiply by your rate per kWh. For propane, the US Energy Information Administration lists about 91,500 BTU per gallon, and one kWh equals 3,412 BTU. Your gas kiln maker or other owners can tell you typical gallons per firing for that model, which you multiply by your local price.
In many US areas piped natural gas costs less per unit of heat than electricity, while propane delivered by truck often costs more. A gas kiln also adds setup costs that an electric kiln does not, such as a gas line or tank and a flue. Our kiln cost guide covers electric firing costs in detail.
One maker figure helps with the math. Olympic lists about 5 gallons of propane per cone 10 firing for its 1827G Torchbearer (3.95 cubic feet). At the EIA's 91,452 BTU per gallon, that is roughly 457,000 BTU, the heat content of about 134 kWh. Multiply 5 gallons by your local propane price and compare it with the electric ceiling above for a kiln of similar size. Treat Olympic's figure as a guide; your load, weather and firing style change it.
How much does a gas kiln cost? Purchase price vs electric
A small gas kiln for pottery costs about the same as a full-size electric kiln before installation, but the extras differ. Olympic's posted list prices in October 2026 put its Torchbearer updraft gas kilns at about $2,700 to $4,900 and its gas Raku kilns at about $3,100 to $5,700, by size. Its downdraft gas kilns, which need a chimney, are larger studio kilns priced on Olympic's price list. For comparison, a 240V electric kiln such as the Skutt KM-818 or Olympic MAS1818HE sat at typically $2,300 to $3,000 at US dealers.
Then add the setup. A gas fired kiln may need:
- A propane tank and supply line set by your propane supplier, or a natural gas line run by a licensed plumber or gas fitter.
- A regulator; Olympic lists a low pressure regulator, castors, an electronic high limit controller and a vent hood as options for its Torchbearer kilns.
- A kiln shed, pad or chimney, plus permit and inspection fees.
An electric kiln's extras are the electrician, breaker, wire and receptacle, and often a vent. Get written quotes for both routes before you decide. Prices here are list or dealer bands; check the live price.
Propane vs natural gas kilns
Many gas kilns, including Olympic's Torchbearer and Raku models, are offered for either propane (LP) or natural gas (NG). Olympic's 1827G and 18 Raku pages list 11 inches of water column pressure for propane, 7 inches for natural gas, and a 3/4 inch inside-diameter gas pipe. You choose the fuel when you order, and the kiln is set up for that fuel; never convert a kiln between fuels yourself.
| Factor | Propane (LP) | Natural gas (NG) |
|---|---|---|
| Supply | Tank filled by truck or swapped cylinders | Utility pipeline to a meter |
| Who sets it up | Propane supplier, to NFPA 58 as adopted locally | Licensed plumber or gas fitter, under permit |
| Heat content (EIA) | 91,452 BTU per gallon | 1,036 BTU per cubic foot |
| Olympic supply pressure | 11 in water column | 7 in water column |
| Where it suits | Rural or outdoor sites without gas service | Homes that already have gas service |
Propane is the usual choice for an outdoor or portable propane pottery kiln, such as a raku kiln, because the tank can sit where the kiln sits, within your local setback rules. A natural gas kiln avoids tank deliveries but ties the kiln to a fixed gas line. Price each fuel per unit of heat with your local rates.
Small gas kiln options for home potters
Olympic's smallest gas pottery kilns are updraft kilns, where the burners sit under the floor and the exhaust leaves through the top. Olympic says its updraft kilns do not need a chimney to create draft, unlike its downdraft kilns. Two Olympic examples with published specs:
- Olympic 1827G Torchbearer: propane or natural gas, two burners at 120,000 BTU per hour in total, ignition with a thermocouple safety shut-off, 17.5 x 27 inch chamber, 3.95 cubic feet, cone 10, 2,350°F (1,288°C), about 225 lb shipping. Built in rings with a hinged lid.
- Olympic 18 Raku: the same burner rating, 3.29 cubic feet and cone 10, with a hand winch that lifts the chamber for raku work; 235 lb.
Other makers build small gas kilns too; compare them on the same points: fuel, BTU rating, safety shut-off, cone rating, chamber size and what the maker's manual says about location and venting. A small gas kiln still needs a permitted fuel supply and an approved outdoor or kiln-shed site. For raku-specific models, see our raku kiln guide.
Can you use a propane kiln at home?
In many US areas, yes, if the kiln is outdoors or in a properly built kiln shed, the tank and kiln meet local setback rules, and your fire department and insurer approve. Raku potters commonly fire small propane kilns outdoors; our raku kiln guide covers that case. What you should not do is run a propane kiln inside a house, basement or attached garage unless the maker, a licensed installer and your local code official all sign off.
Choose a gas kiln if
- You specifically want reduction effects such as copper reds, celadons and flashing.
- You have outdoor space or a kiln shed with room for a flue and setbacks.
- You can get permits, supplier setup and insurer approval.
- You enjoy managing a live fire and are ready for a longer learning curve.
Choose an electric kiln if
- You are starting out, or you fire commercial cone 06 to cone 6 glazes.
- Your kiln will sit in a garage, basement or home studio.
- You want programmable, repeatable firings without watching a flame.
- You want the simplest permit and insurance path.
For most readers that means electric. Start with our best kilns for home pottery; the Skutt KM-818 is a common 240V choice.
Sources: Orton pyrometric cone temperature chart (2016); Skutt, Olympic and L&L electric kiln product pages and manuals for electrical and temperature ratings; Olympic Kilns gas kiln category; Olympic downdraft, Raku and Torchbearer category pages with list prices; Olympic product pages for the 1827G and 18 Raku; NFPA 58 Liquefied Petroleum Gas Code (as adopted locally); US Energy Information Administration energy conversion figures for propane, natural gas and electricity. Specs checked October 2026.