Commercial HVAC

https://trevoroomr453.yousher.com/why-grease-trap-failures-shut-down-phoenix-restaurants-at-the-worst-possible-moment

Commercial rooftop units in Phoenix fail faster than almost anywhere in America. Day and Night Air Conditioning, Heating and Plumbing explains why Camelback, Biltmore, and Downtown Phoenix RTUs break down under 115-degree heat