How to Choose the Right Kiln Controller | ProKilnSupply

How to Choose the Right Kiln Controller: A Practical Guide

The kiln controller is the brain of your firing operation. It determines whether you can fire complex schedules automatically, how precisely temperature is maintained, and how easy the kiln is to operate for different users. Here's what you need to know when evaluating kiln controllers.

Manual vs. Digital: An Easy Choice

Manual kilns use kiln-sitters — mechanical devices that hold a small pyrometric cone. When the cone melts and bends, it trips a switch that shuts the kiln off. Manual kilns also typically use infinite switches (like a stove burner dial) to control element power at low, medium, and high settings.

Manual kilns can produce good results in experienced hands, but they require you to be present, attentive, and experienced enough to manage the firing by feel. For anyone buying new today, a digital controller is the clear choice. The consistency and convenience advantages are overwhelming.

Entry-Level Digital Controllers

Entry-level digital controllers offer basic pre-programmed firing schedules — typically a slow bisque, medium bisque, slow glaze, and fast glaze option — selected by a simple button interface. You choose a program and a cone, and the controller handles the rest.

These are perfectly capable for potters working with standard clays and commercial glazes firing to predictable cone temperatures. The limitation is that you can't customize the ramp-and-hold schedule or create your own firing programs.

Programmable Multi-Segment Controllers

Programmable controllers (like the Bartlett Genesis 2.0 found on Olympic Kilns and the Orton Easy-Fire) allow you to create fully custom firing schedules with multiple segments — each specifying a ramp rate (degrees per hour), a target temperature, and a hold time. You can store multiple programs in memory and recall them instantly.

This level of control matters for:

Special clay bodies with specific ramp requirements, reduction simulation firing schedules, crystalline glaze firings that require very precise peak temperature holds, glass work that needs careful annealing schedules, and heat treating metals with specific austenitizing and tempering temperatures.

What to Look for in a Controller

Cone-fire mode vs. ramp-hold mode: Most good controllers offer both. Cone-fire mode handles standard ceramic work automatically. Ramp-hold mode lets you take full manual control.

Number of programmable segments: More segments allow more complex schedules. Look for at least 8 segments for serious studio work.

Error diagnostics: Better controllers display specific error codes that help you diagnose problems. Basic controllers just display "FAIL."

Data logging: Some advanced controllers log firing data — time, temperature, rate of rise — that you can review afterward. Invaluable for troubleshooting inconsistent results.

The Controller Is Not Upgradeable Cheaply

One often-overlooked point: if you buy a kiln with a basic controller intending to upgrade later, that upgrade is expensive — often $300–$600 for a controller replacement. Buy the kiln with the controller you actually want from the start. We're happy to advise on which controller comes standard on each model and whether upgrades are available.