For a ducted system, anticipate it to take three to 5 hours to have one fitted in a single room, 5 to 10 hours for a double room, or one to 2 days for a whole house. https://milkyway-cs-rpi-edu.cdn.ampproject.org/c/s/milkyway.cs.rpi.edu/milkyway/show_user.php%3Fuserid%3D6683880