There are a few options to condition the air in multiple rooms in the same house. You could install separate split systems into each room that requires cooling or heating, you could look at a multi system that requires only one outdoor to run up to 6 indoor units or you could consider installing a ducted system throughout your home. As a helpful guide to finding what size heat pump / air conditioner you may need, you can use the Fujitsu Assist Tool, located on our website. However, the best way to find out what size unit you need for your room or home is to contact one of our Fujitsu Accredited Installers who are able to assess your space and determine the best unit to suit your needs.