Funny how that little blank can be awfully difficult to fill in if you don’t know what you are doing. If you don’t know what goes there, you can bet your client doesn’t know what goes there and will be working from an entirely different set of assumptions than you are - a recipe for client dissatisfaction with your service and potential liability for you. IR services will differ significantly by region (e.g., there is no point in me looking for conditions conducive to ice dams or checking radiant floor heating where I’m located).
Infrared services are not covered by the Home Inspection SOP. The HI SOP doesn’t provide a pre-defined IR service box for you to work within like it does for the home inspection. You need to define the services you provide, how you provide them, under what conditions you can/can’t perform them and how you will report them. There are standards that exist for various types of IR services which might be appropriate to do in conjunction with your home inspection. It would be wise to be familiar with and apply known standards to your IR services.
So exactly what IR services are you providing when you do a home inspection?