Ultrasonic activity can raise the water temperature by about 10-15° C. I guess it would just depend on how long you run the ultrasonic transducers and how large your ultrasonic tank is.
I used to have a DIY 6L ultrasonic cleaner and without using the tank heater, I would get about a 5-6° C rise after 10 minutes.
I now use a Degritter (much smaller tank) and it will pause for cool down if I run it on Heavy for more than 1 LP. Luckily, I don’t do marathon cleaning sessions otherwise I could see how that could get annoying.