Tuchel, speaking before England's Group L opener against Croatia on Wednesday (21:00 BST), emphasized his commitment to the team's identity of physicality and powerful running.
"I'm just not ready to adapt into a different style of football because of circumstances that we cannot influence. I think we would just give up our strengths," Tuchel said.
Temperatures in Dallas will exceed 30C, with mandatory hydration breaks introduced in all matches. However, England will benefit from playing in the air-conditioned Dallas Stadium, which will reduce the heat impact.
Tuchel acknowledged that hydration breaks can change the character of each half and give coaches opportunities to reset during games, but remained convinced his squad's courageous approach will prevail.
→ Match stats and preview on ScanGoal