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Evenheat Glass Kiln - GTS 41

Save $2,700.00 Save $2,700.00
Original price $9,500.00
Original price $9,500.00 - Original price $9,500.00
Original price $9,500.00
Current price $6,800.00
$6,800.00 - $6,800.00
Current price $6,800.00
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Evenheat support + setup guidance included
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30-Day Returns — hassle-free returns on eligible items
On average, orders leave the warehouse in 5–8 business days
Questions? Call (801) 839-5882
Shipping & Lead Times

DUE TO BRICK SHORTAGE, THESE TIME FRAMES MIGHT BE SLIGHTLY LONGER**

Made-to-Order kilns are built from scratch and have different lead times* Most kilns listed are made-to-order. Contact us for specific order times.

Quick Ship Kilns: Ship in 1-2 weeks

Estimated Lead Times Per Brand

Evenheat Kilns Lead Times: 6-8 weeks

Jen Ken Kilns Lead Times: 12-16+ weeks

Olympic Kilns Lead Times: 8-12 weeks

Speedball Wheels: Usually ship within 10 days. 

HotShotOvens: 2-4 days.

FREE SHIPPING TO US 48*

For more information visit our Shipping Policy

Why Buy From Us


We know you’ve got options. Here’s why customers choose Prokilnsupply.

  • Price Beat Guarantee: We’ll beat any advertised price. Call (801) 839-5882.
  • Free Shipping: Free shipping to the US Lower 48*.
  • Kiln & Studio Experts: Real support from people who know kilns—before and after you order.
  • Financing Available: Get the equipment you need now and pay over time.
  • Lifetime Customer Support: We’re here for setup questions, troubleshooting, and long-term help.
  • Secure Checkout: 100% secure payment processing.


We’re here for the long haul—not just to make the sale, but to help you get the best results from your kiln and equipment.
Learn more about us.

Price Guarantee

Lowest Price Guarantee

At ProKilnSupply, we want you to feel confident that you are getting a competitive price when you shop with us. When a product on our site is marked with our Lowest Price Guarantee, it means we stand behind that price.

If you find the same item offered online at a lower total price within 30 days of your purchase, let us know. If the listing qualifies under the terms below, we will refund you the difference.

We want every customer to shop knowing they are getting excellent value on their kiln or wheel.

How to Request a Price Difference Refund

To request a refund for the price difference, email us a link to the competing online listing within 30 days of your order date. Once we review the listing and confirm that it meets the requirements below, we will issue the appropriate credit.

Eligibility Requirements

Our Lowest Price Guarantee applies only when all of the following conditions are met:

  • The item must have been purchased first from ProKilnSupply
  • The competing offer must be from an online-only retailer
  • Promotional pricing, coupon offers, clearance deals, and limited-time specials are not eligible
  • Auction sites, marketplaces, and discounter platforms such as eBay are not eligible
  • The competing seller must be an authorized retailer for the brand
  • The competitor’s total advertised price must include shipping, handling, and any processing fees
  • The product must be an exact match, including the same model and availability status, such as in stock vs. in stock or made to order vs. made to order
  • The manufacturer must be Evenheat Kiln, Jen-Ken Kilns, or Paragon Industries

Additional Terms

ProKilnSupply reserves the right to deny any request that does not meet these requirements or appears to fall outside a reasonable and fair market price comparison.

Model GTS 41
Max Temperature Cone 07 / 1800 °F
Inside Dimensions 40.5" W x 25.25" L x 13.5" Deep
Volume (Cu. Ft.) 7.52
Power Plug Type NEMA 6-50
Voltage 240
Watts 10800
Amps 45
Shipping Weight (lbs.) 365

 

The GTS Series represents Evenheat’s original glass kiln design of top loading, full brick construction. The GTS 41 is their largest top-loading glass kiln and is built with a fiber lid that offers firing speed and light weight.

The chamber is built entirely of firebrick which acts to smooth the heating process and provide excellent annealing. The best of both worlds combined to deliver the performance you expect.

The large firing chamber measures 41" x 25-1/4" and fits either our full, seamless shelf or half shelf system. It offers an enormous amount of firing area and fits well into studio and production settings alike.

The GTS 41 departs from typical kiln design with its sharp and clean lines that fit your studio and your style.

The GTS 41 is designed for glass fusing, slumping, draping, casting and any other glass work up to 1800°F.

Pair up our Quiet Drive Solid State relay system and TAP II or Icon+ controls and enjoy the performance Evenheat is known for.

The GTS 41 is big, beautiful and designed with size and volume in mind.

This kiln comes with a free 2 year warranty.

Features


The lid of the GTS 41 is constructed of a fiber material that provides excellent thermal properties along with light weight. This design allows the heating elements to be positioned on the surface for maximum heat transfer and firing efficiency.


The GTS 41 is a top loading design and offers a chamber 41" wide x 25.25" long x 13.5" deep. The rim of the chamber is 32" off the floor which is at waist height or lower making it very easy to load and position your glass.


The GTS 41 is constructed of both fiber and firebrick. The entire lid of the GTS 41 is constructed of fiber to reduce the overall weight of the lid as well as severely limiting lid debris.

The swing view is a pivoting, swing-up enclosure that allows you to rotate the control to a comfortable viewing and programming angle. Once you're done, lay it back down to see it from across your studio. It's that simple.


The GTS 41 is equipped with a 2 position lid vent. The lower vent position props the lid by about an inch. Perfect for venting off adhesives and other low temperature binding materials. The upper vent position props the lid by about 4 inches. Perfect for speeding up the cooling process.


The GTS 41 incorporates our Relay Access Port for simple, no-panel-off relay replacement.


To assist you in replacing worn items we have included a maintenance parts tag on the GTS 41 indicating the proper Evenheat part numbers for anticipated maintenance items.


The GTS 41 is standard equipped with a power interrupt switch which removes electrical power from all heating elements if the lid is opened.

Quiet Drive Solid State Relay

Evenheat's patented Quiet Drive Solid State Relay is hands down the best investment you can make in your kiln!

With no moving parts, this relay is able to be triggered up to 60 times a second as opposed to the upper limit of 10 times a second on the default mechanical relay. This means incredibly tight temperature control ensuring each and every one of your firings is as accurate as possible.

The Quiet Drive uses a special method call "Zero Crossing" that will ensure that the heating elements are off when the voltage is at 0V - Giving your heating elements a break so that they will last longer, and you'll save energy!

The best part though? Since there are no moving parts - the Quiet Drive Solid State relay should never need replacing! You will save money and time by never needing to worry about this in the future!

Controller Selection

Evenheat has close relationships with the manufacturers of a variety of digital controllers. This means you will have nothing but the best the best in terms of performance and accuracy in your firings.

With a selection of multiple controllers available - you can choose exactly what fits your needs.

TAP Touchscreen Smart Controller by SDS Industries

The top of the line. The bread and butter. The cream of the crop. The controller for those who want to make their lives easier, improve their craft, and make incredible quality products.

This is our top selling controller - And for good reason!

TAP Smart ControllerThe TAP Smart Controller is without a doubt the best choice on the market right now - It's easy to use, has stellar performance, and is packed full with features!

It has more memory than any other controller, allowing you to more easily utilize, revise, and save many different kinds of firing programs.

Storage for firing programs is virtually unlimited! Create as many profiles, with as many steps as you'd like - you won't be limited by this controller.

Our favorite part though: When ordered with the Wi-Fi Dongle, you can control everything from any device! Prefer to work on your computer or tablet - how about your phone?

 

 

With an internet connection to your TAP Smart Controller, updates from SDS Industries can be applied to your controller automatically - ensuring you always have the most up-to-date software for years to come!

Easily adjust the in-progress firing, skip steps, and view all graphical information on your firing with just a "TAP"!

 

The amount of time you save by working with the TAP Smart Controller pays for itself for years to come - you'll be so happy with this investment that you won't know how you managed so long without it.

The TAP Smart Controller supports the Loud Alarm option.

 

Rampmaster

The Rampmaster provides additional versatility over the Set-Pro controller.

With a numerical keypad,Rampmaster III Controller it allows the operators to create up to 12 firing programs, each including up to 8 segments.

Need to make adjustments as you go? On-the-fly adjustments and other menu functions are available to provide additional control and create your ideal firing profile.

The Rampmaster also supports the Loud Alarm option.

Set-Pro

Set Pro Controller

The Set-Pro is our basic, no frills controller. It gets the job done, but does not offer nearly as much flexibility as the others.


It offers the option to create 8 firing programs, with 8 segments each.

This is a good choice if you're only planning to occasionally use your oven and do not want room to expand in the future.

Furniture Kit

Furniture Kits are necessary accessories for any kiln owner as firing directly on the kiln floor is not only bad for the kiln, but your pieces as well. In addition to this, they're also useful! A furniture kit will allow you to stack multiple shelves on top of one another in order to maximize the useable space when firing smaller pieces.

If you have one that will fit this kiln size already, then you're in luck! But if not, you'll want to ensure you add this to your order as well.

Furniture Kit

Furniture Kit includes:

  • Two (2) Half Shelves
  • Twelve (12) 1/2" High Posts. All posts 1" square.
  • One (1) 5" Post (included for venting purposes)
  • One (1) Haik Brush
  • One (1) 24oz. Glass Separator

 

Kiln furniture can be special ordered separately, but if done so the cost is ~10-20% higher and will incur a separate shipping charge. It's best to include this on your initial order of the kiln.

* Received shelves may contain surface imperfections such as scratches, discoloration or rough edge. These possible imperfections are understood and accepted by the buyer.

Stand with caster wheels

The standard order of this kiln comes with a stationary stand built to handle the weight, heat, and shape of the kiln. While this works perfectly fine, attempting to move your kiln can be a difficult maneuver and could result in a damaged stand, or worse - a broken kiln!

Ordering a stand with caster wheels ensures the whole process of moving your kiln for any reason is a smooth and simple process.

No longer worry about if you're running out of room within your garage - you can tuck your kiln away in a corner when it's not in use! And of course - if you're one for moving the kiln around the studio or other rooms, this is essentially a necessity.

When ordered with a vent system - make sure to detach first before moving the kiln.

Depending on the model, the stand will vary in height. Its primary use is for mobility.

FAQ - KILNS

What to consider when buying a Kiln

1. What are you firing?
Different materials have different temperature requirements. Pottery and stoneware need to reach cone 6–10 (around 2200–2350°F), while glass fusing works at lower temperatures but demands very precise, programmable cooling. Knowing your primary material upfront narrows your options significantly.

2. How much volume do you need?
Think about how many pieces you fire per week. Hobbyists and home studios generally do well with kilns under 5 cubic feet. Working artists typically need 5–10 cubic feet, and classroom or production studios often require 10+. A good rule of thumb: buy slightly larger than you think you need — you can always fire a half-full kiln, but you can't fire a piece that doesn't fit.

3. Check your electrical setup before you buy
Most mid-to-large kilns require a 240V dedicated circuit, which may need to be installed by a licensed electrician. Smaller kilns may run on standard 120V. Always check the kiln's amperage requirements against your existing panel before purchasing — electrical upgrades can add $200–$500 to your setup cost.

4. Manual vs. digital controller
Manual kilns use switches you adjust by hand throughout the firing, requiring you to stay close. Digital controllers let you program a firing schedule and walk away. For most potters today, a digital controller is worth the extra cost — the results are more consistent and the convenience is hard to give up once you've had one.

5. Don't forget ventilation
Kilns release fumes from clay, glazes, and organic materials during firing. A downdraft vent system is strongly recommended for any indoor studio. It protects your health, improves firing results, and extends the life of your elements. Budget around $150–$300 for a quality vent, and factor it into your total setup cost from the start.

6. Think about long-term running costs
The purchase price is just the beginning. Heating elements need replacing every 100–200 firings ($100–$300 depending on kiln size). Electricity costs $2–$8 per firing depending on your kiln size and local rates. You'll also need kiln furniture — shelves, posts, and stilts — which are typically sold separately and are essential from day one.

What size kiln do I need for my studio?

The right size depends on how much you fire and how often. Hobby potters or small home studios generally do well with a compact kiln (under 5 cubic feet), while working artists and classroom studios benefit from a larger kiln like the Olympic Champ XL. Consider how many pieces you fire per week — if you're constantly waiting to fill a small kiln, it's time to size up. It's usually better to buy slightly larger than you think you need.

What's the difference between a top-loading and front-loading kiln

Top-loading kilns are the most common for pottery and ceramics. They're more energy-efficient, easier to load evenly, and generally more affordable. Front-loading kilns (also called car kilns or door kilns) are better suited for large sculptural work or production studios where loading heavy pieces at waist height is more practical. For most potters, a top-loader like the Champ XL is the right choice.

What electrical requirements does this kiln need?

Electrical requirements vary by kiln model and size. Many mid-size and larger kilns require a dedicated 240V circuit, while some smaller models may operate on 120V. It is important to check the kiln’s specifications for the correct voltage, amperage, outlet type, and breaker requirements before installation. A qualified electrician should handle installation if a new circuit or outlet is needed. Never use a kiln with an outlet or circuit that does not match the manufacturer’s requirements.

Can I fire both pottery and glass in the same kiln?

Yes, in some cases — but it depends on the kiln and how you plan to use it. Many electric kilns can be used for both pottery and glass, but the firing schedules for each are very different. Glass typically requires slower, more precise heating and cooling cycles to help prevent cracking, while pottery firing follows different temperature and timing needs. If you plan to fire both, a kiln with a programmable controller is especially helpful for managing and switching between firing programs. Always check the kiln manufacturer’s recommendations before using it for multiple materials.

What cone temperatures can this kiln reach?

The cone temperature a kiln can reach depends on the specific model. Many ceramic kilns are designed to fire anywhere from low-fire ranges like cone 06–04 up through mid-fire and, in some cases, high-fire ranges such as cone 8–10. Always check the kiln’s product specifications to confirm its maximum cone rating and make sure your clay and glaze are compatible with that firing range.

Do I need a kiln vent, and is one included?

A kiln vent is strongly recommended, though it may not be included with your kiln purchase. During firing, kilns release fumes from clay, glazes, and organic materials — these can be harmful in an enclosed space. A downdraft vent system pulls air through the kiln and exhausts it outside, protecting both you and your work. Even if your studio has good airflow, a dedicated vent improves firing results and extends the life of your elements and lid.

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