From Pro-Tec Refrigeration, Inc
Pro-Tec Refrigeration, Inc. was established in 1985 in Glendale, Arizona, to provide commercial/industrial refrigeration service and installation to the greater Phoenix area. Through the years we have expanded our services in Arizona to include: commercial - industrial - residential: heating/ventilation/air conditioning (HVAC), plumbing, electrical, controls/automation, general contracting, and commercial kitchen equipment. We are a “Full Service Mechanical Contractor”. We perform our services in supermarkets (grocery), retail stores, commercial bakeries, schools, hospitals, military bases, nuclear facilities, restaurants, sporting venues and training camps, dairies, office complexes, apartment buildings, warehouses, and residential homes.
Google: 4/5 
BBB: No Rating
I had these guys install a new A/C end of last year in 2010. It was a rush, and many additional things going on. I've had great service, before, during, and after the install. It's been a pleasure to work with them and would recommend them for any install or A/C work. Thanks!!!