If your Rinnai INFINITY controller starts with MC91, you can upgrade it with one of these current controllers, but it would be wise to check what model of you have.
If your controller is one of these models below, unfortunately it is obsolete with no upgrade available due to the age of your Rinnai INFINITY unit.
- MC-31-A
- BC-31-A
- MC-33-1A
- BC-45-2A
- BSC-45-1A
Consider upgrading your Rinnai INFINITY and your controller at the same time.
To get a quote, contact your preferred local gas fitter, or Rinnai Service Team or Rinnai Service Agent
