If I'm there for 2 minutes the amount I have to charge to make that call worthwhile is going to make the HO unhappy because they only understand the time you are in front of them. "$100 for 2 minutes? That's $3000/hr!!!"
Why would you only spend 2 minutes in the customers home?
There are many valuable things you can do for the customer while you're there.
Remove panel covers and check for loose connections and signs of overheating.
I find a lot of loose connections even on new homes. You could be saving your customer from an expensive repair down the road.
Check the whole house for missing or broken cover plates.
Check the smoke detectors & CO detectors.
Check for proper grounding of the phone & TV systems.
Test GFCI receptacles and breakers.
Ask if they would like any dimmers installed at a reduced rate while you're there.
I have yet to go on a service call and only spend 2-minutes at the customer's home.
It takes me 2-minutes to get my tools, walk to the customer's door and wait for them to answer the door. Do you really only show 2-minutes for your time on your time card?
If you're truly only spending 2-minutes in the customer's home than you're providing poor service in my opinion and probably shouldn't get paid.
It works both ways. You have to make the call worthwhile for the customer as well as for You.