Attic insulation in Phoenix

Updated October 2026 · 5 public sources cited

SRP customers can save up to 75 percent on professionally installed attic insulation, up to $600, applied instantly on the invoice by a participating contractor.¹

SRP's insulation rebate

• You must be a current SRP residential electric customer in a single-family home, apartment or condo. New construction, attics over unconditioned spaces and mobile homes don't qualify.¹
• Existing insulation with an effective value under R-19 improved to R-38 is eligible. Insulation rated above R-19 but underperforming may qualify with photos or thermal images.¹
• The work must be done by a participating SRP contractor who is BPI-certified and licensed in Arizona, together with air sealing unless documentation shows it isn't needed.¹
• The rebate is applied to your invoice instantly.¹

APS customers and income-qualified help

We didn't find a current APS attic insulation rebate we could verify. SRP's page points to two state programs: the Arizona Weatherization Assistance Program for lower-income households, and Efficiency Arizona, which may offer rebates for insulation and air sealing.¹

How much insulation?

Phoenix is in climate zone 2, where ENERGY STAR recommends R-49 for an uninsulated attic or adding R-38 over 3 to 4 inches.²³ SRP's rebate is built around reaching R-38.¹

Choosing an insulation contractor in Phoenix

• Confirm they're on SRP's participating contractor list, BPI-certified and Arizona-licensed.¹
• Ask how they'll air seal, since SRP requires it in most cases.¹
• Check that the SRP rebate is shown as a line item on the invoice.¹

General information summarized from the public sources listed below. It isn't professional, engineering or legal advice. Codes and programs change; confirm current requirements with your local building department or utility before you start.