There are several web-sites that have worksheet to help you pick the right air conditioner. Only knowing the size is only part of the information needed to pick the right one. Consumer Reports has a very nice worksheet that would help you determine how many BTU you need to keep your cool.
Haier 5000 BTU window air conditioner for rooms 100 to 150 sq. ft. (HWF05XCK-T), Dual Hose Haier Portable Air Conditioner
AC, 14000 BTU Room A/C Dehumidifier Fan, Frigidaire FRA082AT7 8,000 BTU Window-Mounted Compact Room Air Conditioner, HAIER ESA408K-L ENERGY STAR 8,000 BTU ROOM WINDOW AIR CONDITIONER & REMOTE $405, BLACK & DECKER BWE10A ENERGY STAR 10,000 BTU ROOM AIR CONDITIONER REMOTE $399, BLACK & DECKER BWE06A ENERGY STAR 6,000 BTU ROOM WINDOW AIR CONDITIONER REMOTE, Portable Air Conditioner
AC ~ Sunpentown Slim 10K BTU Room A/C Dehumidifier, Fan, Portable Air Conditioner Compact Room
AC, 13K BTU Dual Hose A/C Dehumidifier Fan, Window Air Conditioner Portable
AC 12K BTU Energy Star Room A/C Fan Dehumidifier, NewAir 14,000 BTU Portable Room Air Conditioner and Heater NEW
AC-14100H , Window
AC Air Conditioner 18K BTU Energy Star Portable Room A/C Dehumidifier Fan, GE Room Air Conditioner 8000 BTU, ONE Room air conditioner Kenmore 580/72059 - 5700 BTU - Window unit., PORTABLE AIR CONDITIONER ROOM TO ROOM TOYOTOMI MODEL TID 1800 7200 BTU, Haier 14000 BTU Dual Hose Portable
AC Unit Room Air Conditioner A/C Dehumidifier, BLACK & DECKER 18,000 BTU ROOM WINDOW AIR CONDITIONER BWE18A, NEW
AC-14100H NewAir 14,000 BTU Portable Room Air Conditioner and Heater, NewAir
AC-10100E New 10,000 BTU 110V Portable Room Air Conditioner, Haier Dual Hose Portable Air Conditioner
AC, 14000 BTU Room A/C Dehumidifier Fan, HWR05XC7 HAIER WINDOW AIR CONDITIONER 5200 BTU WITH REMOTE CONTROL SMALL ROOM, EVERSTAR 8,000 BTU PORTABLE ROOM AIR CONDITIONER, MPN1-11CR Portable A/C room air conditioner 11,000 btu, 12,000 BTU Portable Room Air Conditioner Unit New 110V NewAir
AC-12100E , NewAir
AC-10100H New 10,000 BTU 110V Portable Room Air Conditioner And Heater, HAIER 5200 BTU ROOM AIR CONDITIONER, LG LW7010HR 7,000 BTU Window Room A/C & 3850 BTU Heat, HAIER HWF05XCJ WINDOW 5000 BTU AIR CONDITIONER FOR SMALL ROOMS 100 TO 150 SQ FT, Kenmore 15,100 BTU Room Air Conditioner, 115 V , Frigidaire FAA068P7A Room Air Conditioner 6000 BTU-New in Box, LG LWHD2400HR 24,000 BTU WINDOW ROOM Air Conditioner, MPN1-095CR Portable A/C room air conditioner 9,500 btu, FEDDERS THROUGH THE WALL ROOM
AC 10,000 BTU 115 VOLT ENERGY STAR AIR CONDITIONER, SHARP PORTABLE ROOM AIR CONDITIONER 10,000 BTU CV-P10RC, FEDDERS 8k BTU WINDOW MOUNT ROOM AIR CONDITIONER 3 SPEED
AC UNIT w/ REMOTE R410A, Fedders 24,000 BTU Room Air Conditioner AZ7R24E7A Window
AC , MOVINCOOL OFFICE PRO 36 SERVER ROOM Portable Air Conditioner 36,000 BTU , Portable Room Air Conditioner And Heater 10,000 BTU 110V NewAir
AC-10100H New , new Keystone 5,000 BTU Energy Star Window Air Conditioner with Remote ROOM WALL , GE 24200 BTU Room Air Conditioner Energy Star AEM24DQ, Fedders 12,000 BTU Room Air Conditioner AZ7Y12F2A Window
AC 115 VOLT,