What is another word for turn the heat?
Pronunciation: [tˈɜːn ðə hˈiːt] (IPA) 
When it comes to expressing the concept of increasing the temperature, there are several synonyms available to say "turn the heat". One option might be to say "boost the heat", which is a great way to convey the idea of making the temperature rise quickly and decisively. Another good synonym is "crank up the heat", which has a similar connotation of a quick and dramatic increase in temperature. Alternatively, you might say "raise the temperature" to be more specific about your intentions. Whether you use one of these synonyms or come up with your own phrase, it's important to be clear and direct when talking about making things hotter.
