Crosswordiee.com

% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for BTU part:

UNIT: BTU part
UNIT: Part of BTU
THERMAL: Part of BTU
UNIT: Last part of BTU
UNIT: Part of BTU, CPU, or ICU
UNIT: Part of CPU or BTU