refrigerant - the refrigerant number installers in Chandler argue about.
Two bids can look similar while assuming different refrigerant values; the cheaper one often specs down. Ask for the figure in writing and check it against the manufacturer datasheet before you sign.
Chandler Heights, Bridges at Ocotillo and Ocotillo: Peak season: ['Jun-Sep cooling', 'Dec-Feb heating'] - book early in Chandler. Local housing mix shapes hvac repair specs here. Quotes via the hvacrepair chandler network.