Skutt kilns are electric pottery kilns, and the KM (KilnMaster) series is the line most home potters shop. For a garage or basement studio with 240V service, the KM-818 is the model to start with: 2.6 cubic feet inside, cone 10 on Skutt's spec page, and a 26.7A draw. If you only have 120V, the KM-614-3 is the largest Skutt that runs on a 20A household-type circuit, but it tops out at cone 6. The KM-1027 suits busy studios that can supply a 60A circuit.
This review is research-based: we compared Skutt's product and electrical pages, an older Skutt spec sheet and US dealer listings, and did not fire these kilns. Where sources disagree, we print both figures.
Verdict: which Skutt electric kiln fits a home studio
Choose the KM-818 if you can add a 240V circuit and want room to fire stoneware or porcelain to cone 10 now and then. It fits a garage corner and holds a real load of mugs and bowls.
Choose the KM-614-3 if 240V is not possible and your clay and glazes are cone 6 or lower. Choose the KM-1027 only if you fill kilns quickly, because its 48A draw on single-phase 240V means a 60A breaker and heavy wire.
The Firebox models plug into a standard 120V outlet and suit glass, metal clay, test tiles and small pieces.
Skutt kiln electrical table by model
Figures below come from Skutt's product pages and electrical specification page. Where the current product page gives no breaker size, we used Skutt's electrical spec sheet and say so in the notes under the table.
| Model and supply | Amps (watts) | Breaker | Plug (NEMA) | Max cone | Interior | Price |
|---|---|---|---|---|---|---|
| KM-614-3, 115V 1-phase | 20A (2,300 W) | 20A rating; see note | 5-20 | Cone 6, 2,250°F (1,232°C) | 11 x 11 in, 13.5 in deep, 0.8 cu ft | Check price |
| KM-818, 240V 1-phase | 26.7A (6,400 W) | 40A (Skutt spec sheet) | 6-50 | Cone 10, 2,350°F (1,288°C) | 18 x 18 in, 18 in deep, 2.6 cu ft | Check price |
| KM-818, 208V 1-phase | 26.7A (5,550 W) | 40A (Skutt spec sheet) | 6-50 | Cone 10 on Skutt's page | Same as above | Dealer order |
| KM-1027, 240V 1-phase | 48A (11,520 W) | 60A | 6-50 | Cone 10, 2,350°F (1,288°C) | 23 x 23 in, 27 in deep, 7 cu ft | Check price |
| KM-1027, 208V 1-phase | 48A (9,984 W) | 60A | 6-50 | Cone 6, 2,250°F (1,232°C) | Same as above | Dealer order |
| KM-1027, 240V 3-phase | 29.3A (11,520 W) | 50A (product page) | 15-50 | Cone 10 | Same as above | Not for homes |
| KM-1027, 208V 3-phase | 31.7A (11,000 W) | 50A (product page) | 15-50 | Cone 10 | Same as above | Not for homes |
| Firebox 8x6 LT, 115V | 15A (1,800 W) | Not published on product page | 5-15 | Cone 6, 2,250°F (1,232°C) | 8 x 8 in, 6.5 in deep, about 0.2 cu ft | Check price |
| Firebox 8x4 LT, 115V | 15A (1,725 W) | Not published on product page | 5-15 | Cone 10, 2,350°F (1,288°C) | 8 x 8 in, 4.5 in deep, 0.2 cu ft | Dealer order |
Source notes: Skutt's KM-818 page lists 26.7A and 6,400 W at 240V. New Mexico Clay's listing says 27.8A and 6,660 W with a 40A breaker and #6 copper wire, and Clay-King lists a 50A breaker for the standard KM-818. Skutt's older electrical spec sheet (revised 1999) gives the KM-614-3 a 30A breaker with #10 wire, while the current Skutt page lists a 20A rating with a 5-20 receptacle. For the 3-phase KM-1027, Skutt's product page says 50A and the old spec sheet says 40 or 45A.
These are the maker's stated figures. Have a licensed electrician check your panel, size the breaker and wire from the kiln's nameplate and local code, and install the receptacle before the kiln arrives. Never wire a kiln circuit yourself.
What KM means on a Skutt kiln
KM stands for KilnMaster, Skutt's name for its digitally controlled ceramic kilns. The classic KilnMaster controller is a 12-key pad. Skutt's KM-818 and KM-1027 pages say it stores 12 programs with up to 32 ramp and hold segments each, and it also has preset cone-fire modes for bisque and glaze.
A KMT prefix, as in KMT-818, marks the KilnMaster Touchscreen version. Dealer listings such as Blick's use that naming. The "-3" suffix on models like the KM-818-3 is tied to 3 inch brick in dealer listings: Clay-King lists 3 inch firebrick for its KM-818-3, while The Ceramic Shop lists 2.5 inch brick as standard with a 3 inch option. Ask the dealer which brick you are buying.
Skutt's KM-614 page also lists current sensing for each kiln section and built-in diagnostics. That helps you spot a weak element before a firing comes up short. Our kiln controller guide explains cone-fire and ramp-hold modes in plain terms.
KilnLink: monitoring a Skutt kiln from your phone
KilnLink is Skutt's kiln monitoring system. Skutt's FAQ separates three things. The free KilnLink app shows the current status of a kiln with a touchscreen controller. KilnLink Premium is a paid per-kiln subscription, sold yearly or as a cheaper five-year plan, that adds the full feature set. Premium also works with older 24-button KM controllers when they have Skutt's Link Board and KilnLink Box fitted.
Skutt's FAQ did not say whether you can start a firing remotely, so do not buy on that assumption. Treat KilnLink as a way to check progress and errors, not a reason to leave a kiln unattended against the maker's instructions.
Skutt KM-818: the best Skutt kiln for most home studios
The KM-818 earns the top spot because it balances size, power and circuit cost. Its 18 x 18 inch chamber holds about 12 tea bowls 6 inches wide by Skutt's own count, which suits a hobby potter who fires every week or two. The 26.7A draw keeps it on a 40A circuit in Skutt's spec sheet, a much easier install than the 60A circuit a KM-1027 needs.
Skutt rates it to cone 10, 2,350°F (1,288°C), at both 240V and 208V. New Mexico Clay's listing describes it as a kiln for occasional cone 10 work, which matches the usual advice: firing mostly at cone 5 to 6 is easier on elements. A sectional build lets you take it apart to move it, and Skutt describes balanced elements with twice the element grooves for longer element life.
- Electrical: 240V 1-phase, 26.7A, 6,400 W (Skutt); 208V version 5,550 W
- Breaker and plug: 40A with #8 copper per Skutt's spec sheet; NEMA 6-50
- Max temperature: Cone 10, 2,350°F (1,288°C)
- Interior: 18 x 18 in opening, 18 in deep, 2.6 cu ft
- Controller: KilnMaster 12-key (touchscreen KMT version sold)
- Weight: about 145 lb shipping (Skutt)
- Price band: typically $2,300 to $3,000 at US dealers in October 2026; check the live price
Pros
- Cone 10 rating on a 40A circuit
- Compact footprint for a full-size kiln
- Sectional design for moving and service
Cons
- Needs a 240V circuit and an electrician
- Dealer and maker amp figures differ
- Frequent cone 10 firing wears elements faster
Who should skip it: Anyone limited to 120V power, or a potter who already fills a kiln twice a week and would be better served by the KM-1027.
Skutt KM-614-3: the 120V Skutt for cone 6
The KM-614-3 is the pick for potters who cannot add 240V. Skutt lists it at 115V, 20A and 2,300 W with a NEMA 5-20 receptacle, so it needs a 20A circuit rather than a plain 15A kitchen outlet. Its 3 inch brick helps it hold heat on that limited power.
The trade-off is size and heat: 0.8 cubic feet and a cone 6 rating, 2,250°F (1,232°C). That covers most mid-fire stoneware, but not cone 10. It was not found on amazon.com in our research, so the button above runs an Amazon search; Skutt dealers stock it.
- Electrical: 115V 1-phase, 20A, 2,300 W
- Plug: NEMA 5-20 (20A receptacle)
- Max temperature: Cone 6, 2,250°F (1,232°C)
- Interior: 11 x 11 in, 13.5 in deep, 0.8 cu ft
- Brick: 3 in
- Weight: about 88 lb shipping
- Price band: typically $2,000 to $2,400 at US dealers in October 2026; check the live price
Pros
- Runs on 120V
- 3 in brick
- Same KilnMaster controller as the big models
Cons
- Cone 6 maximum
- Small chamber
- Still needs a dedicated 20A circuit with a 5-20 receptacle
Who should skip it: Potters who want cone 10 glazes, or anyone who can add 240V and would get three times the space from a KM-818.
Skutt KM-1027: big loads and a 60A circuit
The KM-1027's 23 x 23 inch opening and 27 inch depth give 7 cubic feet, about 38 tea bowls by Skutt's count. On single-phase 240V it draws 48A and 11,520 W, uses a NEMA 6-50 plug and needs a 60A breaker.
Read the voltage line carefully. On 208V single-phase it draws the same 48A but Skutt rates it to cone 6 only, because the elements make less heat at the lower voltage. On 240V it reaches cone 10, 2,350°F (1,288°C).
Amazon warning: some KM-1027 listings on amazon.com are 3-phase kilns, one for 240V 3-phase and one for 208V 3-phase, both with a NEMA 15-50 plug. Most US homes have single-phase service, and a 3-phase kiln will not run on it. Another KM-1027 listing does not state the phase in its title. Before you order, confirm the listing says 240V single-phase (1-phase), and confirm your own service with an electrician.
- Electrical: 240V 1-phase, 48A, 11,520 W; 208V 1-phase, 48A, 9,984 W
- Breaker and plug: 60A; NEMA 6-50 (single-phase)
- Max temperature: Cone 10 at 240V; cone 6 at 208V single-phase
- Interior: 23 x 23 in, 27 in deep, 7 cu ft
- Weight: about 290 lb dry
- Price band: typically $4,400 to $5,100 at US dealers in October 2026; check the live price
Pros
- 7 cu ft load
- Cone 10 at 240V
- Matching Skutt furniture kit sold
Cons
- 60A circuit
- Heavy
- 3-phase listings are easy to order by mistake
Who should skip it: Beginners who fire a few pieces a month, homes with 208V single-phase power that need cone 10, and anyone whose panel cannot spare a 60A breaker.
Skutt also lists a larger KM-1227 at the same 48A draw. See our KM-818 vs KM-1027 comparison.
Skutt Firebox kilns: glass, metal clay and test tiles
The Firebox 8x6 LT plugs into a 120V, 15A outlet with a NEMA 5-15 plug and reaches cone 6, 2,250°F (1,232°C) per Skutt. Its Mini Touchscreen controller has GlassFire, ConeFire and PMC (metal clay) modes and stores 30 custom programs. The chamber is only 8 x 8 inches and 6.5 inches deep, so think test tiles, beads, pendants and a few small cups.
Skutt also lists the Firebox 8x4 LT, a shallower 4.5 inch chamber rated to cone 10, 2,350°F (1,288°C), at 1,725 W. The older Firebox 8 with a pyrometer, sold on Amazon as the Skutt Firebox 8, reaches 2,000°F (1,093°C), which suits glass and low-fire work only. Blick still listed it in October 2026, so it is not clearly discontinued.
- Electrical: 115V, 15A, 1,800 W, NEMA 5-15
- Max temperature: Cone 6, 2,250°F (1,232°C)
- Interior: 8 x 8 in, 6.5 in deep, about 0.2 cu ft
- Controller: Mini Touchscreen, 30 programs
- Weight: about 58 lb shipping
Pros
- Standard household plug
- Reaches cone 6
- Glass and metal clay modes built in
Cons
- Tiny chamber
- Price not captured in our research
- Not a production pottery kiln
Who should skip it: Anyone who wants to fire a full set of mugs or bowls at once; look at the KM-614-3 or our small kiln picks instead.
Sizing Skutt kiln capacity to your work
Pick the chamber by how much you make between firings and by your tallest piece, not by the biggest kiln your panel can carry. A half-empty kiln still has to heat its whole chamber of brick, and a kiln that is too small means firing more often, which wears elements sooner.
Skutt's own counts give a useful scale. The KM-818 (2.6 cubic feet, 18 inches deep) holds about 12 bowls 6 inches wide and 3 inches tall, and the KM-1027 (7 cubic feet, 27 inches deep) holds about 38 tea bowls. The KM-614-3 is 0.8 cubic feet and 13.5 inches deep, and the Firebox 8x6 LT is only 6.5 inches deep, so it suits tiles, beads and small cups.
- A few pieces a week, handbuilt or thrown: KM-614-3 on 120V, or KM-818 if you can add 240V.
- A weekly or fortnightly load of mugs and bowls: KM-818, the size Skutt counts at about 12 bowls per load.
- Classes, sales or tall vases: KM-1027, if your panel can spare a 60A breaker.
Measure your tallest piece and add shelf thickness and a post gap before you settle on depth. Our kiln loading guide covers spacing. If you are new and still choosing across brands, our best kilns for home pottery page covers beginner picks.
Matching Skutt furniture kits by model
Skutt kilns ship with a stand, an extra thermocouple and peep plugs on the KM-818 page, but shelves and posts are sold separately as a furniture kit. Order the kit made for your exact model and brick thickness, because a 3 inch brick kiln has a smaller inside diameter than the 2.5 inch version and takes smaller shelves.
- KM-818-3 (3 inch brick): The Ceramic Shop lists 2 full and 3 half shelves 15.5 inches across, 3 posts each of 1, 2, 3, 4, 5 and 6 inches, and 8 oz of kiln wash. Chesapeake Ceramics lists the same shelf and post count for KM and KMT 3 inch brick models, with 5/8 inch shelves.
- KM-818 (2.5 inch brick): The Ceramic Shop offers Skutt's suggested kit of 2 full shelves, 3 half shelves, posts and kiln wash.
- KM-1027: The Ceramic Shop lists 8 half shelves 22 inches across, 6 posts each from 1 to 6 inches, and a 1 lb box of kiln wash.
- KM-614-3 and Firebox: kit contents were not published on the pages we checked, so ask your dealer.
Buying the kit with the kiln usually ships everything on one freight order. Our kiln shelves and furniture guide explains shelf materials, and kiln wash covers how to coat shelves.
What Skutt does well
Skutt publishes electrical figures for every voltage and phase, which makes the electrician's job easier.
The KilnMaster controller is simple. Cone-fire presets cover bisque and glaze firings for beginners, and the 32-segment ramp and hold mode covers slow cooling and crystal glazes later. The KM pages describe a sectional design you can split for moving through doorways and for service.
A large US dealer network stocks Skutt parts such as elements, relays and thermocouples, and matching furniture kits exist for the KM-818 and KM-1027.
Weak points to know before you buy
The full-size models need 240V. Budget for an electrician, a breaker, heavy wire and the receptacle on top of the kiln price. Our kiln cost guide covers those extras.
Amazon titles do not always state phase, voltage or brick thickness, and figures differ between Skutt, dealers and Amazon, as the source notes above show.
Some versions ship with 2.5 inch brick, which holds heat less well than 3 inch brick, and KilnLink Premium is a paid add-on.
Skutt kiln for sale: where to buy and what to check
Most Skutt kilns are sold through ceramic supply dealers, who ship by freight and can order the exact voltage, brick and controller you need. Amazon carries the KM-818, a KM-1027 kit listing and the 3-phase KM-1027s, but not the KM-614-3 or Firebox LT models in our research.
Plan for lead time. In October 2026 The Ceramic Shop listed the KM-818 and KM-1027 as made to order, shipping in 10 to 14 weeks, and the KM-818-3 with furniture kit at 8 to 12 weeks. Skutt's KM-818 page says its warranty covers parts and labor and is never pro-rated, handled through its distributors.
Before you order, match voltage, phase, breaker, plug and maximum cone to your home and clay, and ask whether shelves and posts are included. Buying used is covered in our kiln for sale guide.
Kilns get hot on the outside. Follow Skutt's clearance and ventilation instructions for walls and nearby objects, keep children and pets away during firings, and clean clay dust with a wet mop rather than a broom because it contains silica.
Who should buy a Skutt kiln, and who should skip
Buy a Skutt if you want a widely stocked brand with clear electrical data and a simple controller.
Skip Skutt if you want hard ceramic element holders, which are an L&L feature, or 3 inch brick on every model as standard, which Olympic lists on its Medallion series. Skip the full-size KM models if you cannot add a 240V circuit.
Alternatives to Skutt
- Paragon kilns: strong in small 120V kilns such as the Caldera, plus full-size TnF models.
- L&L kilns: Easy-Fire models with hard ceramic element holders.
- Olympic kilns: Medallion models with 3 inch brick and published wire sizes.
- Evenheat kilns: dealer-only Michigan kilns with several controller choices.
- Best kilns for home pottery: our cross-brand picks.
Sources: Skutt product pages for KM-614, KM-818, KM-1027, Firebox 8x6 LT and Firebox 8x4 LT; Skutt electrical specifications page and Skutt KM electrical spec sheet (rev. 1999); Skutt KilnLink FAQ; Skutt article on extending element life; dealer listings from New Mexico Clay, Clay-King, The Ceramic Shop (KM-818, KM-818-3 with furniture kit, KM-1027 with furniture kit) and Blick; Chesapeake Ceramics 818-3 furniture kit listing; L&L kiln longevity knowledgebase article; Amazon KM-818 and KM-1027 listings. Specs checked October 2026.