Clue: Central heating measurement

Answer: BTU

Length: 3

---

Similar Clues:

• Central heating unit (it's found in four themed answers) (SUN with 3 letters)
• Central heating outlet (VENT with 4 letters)
• Part of a central heating system (BOILER with 6 letters)
• Area measurement (WIDTH with 5 letters)
• City of central Vietnam (HUE with 3 letters)
• Central Park unit (ZOO with 3 letters)
• Part of an air force in south-central Asia? (NEPALPLANE with 10 letters)
• River in central New Jersey (RARITAN with 7 letters)
• Place in central Saskatchewan (HARRIS with 6 letters)
• Strengthen by heating and cooling (ANNEAL with 6 letters)