When purchasing an air conditioning window unit, make sure that it conforms to the guidelines for your building. The size of the unit cannot exceed the given window dimensions, and its energy output cannot exceed the given BTUs.

Building

Window type

Window dimensions

BTUs

Installation cost per unit

College Road Apartments

Steel casement  with leaded glass

22 ¼” wide

6,000 to 12,000

$200

18-40 Edwards Place

Double-hung wood frame

24 ¼” wide

6,000 to 12,000

$100

Lawrence Low-Rise Apartments

Metal frame

20 ½” long x 12 5/8” high

6,000 to 10,000

$150

172-190 Prospect Street Apartments

Steel casement with leaded glass

21 ½” wide

8,000 to 12,000

$200