There’s a very simple answer to this question, which is: No you don’t.
Ductless air conditioners have been popular installations for many commercial buildings for years, especially restaurants and bars. But the last decade has seen an immense rise in the number of ductless ACs installed in homes.
If you’ve chosen to have a new air conditioning and/or heating system installed in your home this month, you’ll have a few choices for features to include with it, such as a Wi-Fi thermostat (something that we highly recommend). Another of those options is putting in zone control.
Insulation is an essential part of improving home performance. In a place that grows as hot as Arizona, you don’t want a poorly insulated home, since it will allow excess heat to seep inside and put extra pressure on your air conditioning system.