Choosing the right size ductwork for your AC in Phoenix can be tricky. It's (important) to make sure you get the correct size for maximum efficiency! You don't want to spend your money on something that won't do its job properly, now do ya? Here are some tips on how to select the best size ductwork for your AC.

First, measure the (length) of your space. Measure from wall-to-wall and floor-to-ceiling in feet or inches. Then determine what type of AC system you have - whether it's a window unit or a central air system - as this will impact the size of ductwork you need.

Next, calculate the CFM (cubic feet per minute). This is done by multiplying the length, width, and height of the space together and then dividing by two. This number gives you an estimate of how much air flow is needed to cool down a room effectively. Add up all these numbers together to get an accurate total CFM requirement for your home or business.

Furthermore, consult with an HVAC (heating ventilation and air conditioning) technician who can help you figure out exactly what kind and size of ductwork is necessary for optimal performance in Phoenix’s climate. They should also be able to provide advice on which type and brand would work best based on their expertise!
Finally, when shopping around for ductwork be sure not only to look at price but also quality and durability - after all you want something that'll last! Additionally, consider any future renovations or expansion plans so that whatever duct work you purchase can accommodate those changes too!
In conclusion, selecting the correct sized ductwork for your AC in Phoenix doesn't have to be difficult if you take certain steps into consideration. With a bit of knowledge about measurements and airflow requirements plus expert HVAC guidance, choosing the perfect size won’t seem so daunting anymore!