Advantages of a steel catalyst:
Most Durable Material - All-steel construction is impervious to cracking and crumbling.
Faster Start Up Time - Steel heats up faster than ceramic, reaching optimal light-off temp sooner.
Higher Cell Density - Steel combustors have 2X the cell density of ceramic for more effective catalyst surface area.
Disadvantages of a steel catalyst:
More Expensive - Higher material cost results in a higher retail price.
Frequently Asked Questions:
Q. Is it true that I can engage the combustor earlier or at a lower temperature?
A. Read this carefully! There is misinformation online about this.
Do NOT engage the combustor at a lower temperature. All catalysts needs 500°F of temperature focused on them for 20 to 30 minutes to allow proper light-off.
A steel combustor WILL reach operating temperature FASTER than ceramic. Keep an eye on your thermometer!
Q. Will a steel catalyst function longer than a ceramic combustor?
A. The catalyst coating (platinum and palladium) that makes a combustor work will have the same life-span regardless of substrate (steel or ceramic).
Q. Will a steel catalyst last longer than a ceramic combustor?
A. The steel substrate in a metal combustor is more durable than ceramic. It will not crack or crumble prematurely. If you have trouble with crumbling combustors, upgrading to a steel combustor is a great idea. That said, direct flame impingement can still destroy the platinum/palladium coating, make sure you are not allowing the fire to reach into the catalyst!
Q. Why does my new metal combustor look all rusty?
A. Unlike a ceramic combustor, a steel combustor is fully assembled and then submerged in the precious metal solution. The reaction of the mixture with the steel causes a unique oxidized look with color variations. This is completely normal!