Central heating unit (it's found in four themed answers)

Question:

Answer:

SUN

Length:

Similar Crossword Questions:

"Central" Ireland found in four puzzle answers
Workweek start, or an apt title for this puzzle based on an abbreviation found in its five longest answers
Part of a central heating system
Clickable item found in the seven longest Across answers
They are found in this puzzle's three longest answers
Main thoroughfare in Manhattan (one can be found in each of the four long answers in this puzzle)
Regular stuff found inside this puzzle's three longest answers
Boat lifters found in this puzzle's three longest answers
Black Friday destination found in nine of this puzzle's Across answers
Easter bunny's spring, found in this puzzle's nine longest answers
Heating unit: Abbr.
Service found in the four longest Across answers herein
Things found in this puzzle's eight longest answers
Brewed drink (found in all four long answers)
Postseason gridiron game, and a hint to the puzzle theme found in starred answers
What the self-contradictory words found in this puzzle's theme answers are examples of
Help found inside eight puzzle answers
Dream found in this puzzle's seven longest answers
It includes a vest ... and what can be found in each set of circles in the long answers
Where the last words of the long answers may be found
Nerve, found in eight of the Across answers
Commercial interruptions literally found in this puzzle's three other longest answers
Cyclist Armstrong, or what completes the ensemble found in the four long across answers
This puzzle's theme found in the answers to five asterisked clues
Stocking stuffer found in seven of this puzzle's longest answers