If you buy a PTAC that is oversized for your room, the PTAC will quickly reach the desired temperature, but will filter fewer dust particle out of the air and will not dehumidify as effectively. If you buy a PTAC that is undersized for your space, the unit will run much more often than necessary.

Please call email us if you have any questions about the best size for your space, and we'll help you select the right unit for your needs!