Insulation in Phoenix, AZ - free quotes from local pros

Phoenix homeowners face some of the highest cooling costs in the country. Summer temperatures routinely exceed 115 degrees, and attic spaces in under-insulated homes can reach 150 degrees or more. When your air conditioner runs 10 to 12 hours a day from May through September, the quality of your insulation directly determines your energy bill.

If your upstairs is noticeably hotter than the ground floor, your AC runs constantly without keeping up, or your energy bills keep climbing, it is likely time for an insulation upgrade. We connect Phoenix homeowners with insulation contractors who understand the desert climate and deliver quality work.

The average Phoenix insulation project costs $1,500 to $8,000 depending on the scope. Get free quotes from local pros and compare before you hire.

Insulation costs in Phoenix

Insulation pricing in the Phoenix metro runs near the national average. The high volume of insulation work in the Valley keeps pricing competitive. Here is what Phoenix homeowners can expect to pay for common insulation projects.

What affects costs in Phoenix

Several factors specific to the Phoenix market influence your project cost:

• Attic accessibility. Phoenix homes with tile roofs, low attic clearance, or multiple attic sections cost more to insulate. Many tract homes built in the 1990s and 2000s across Chandler, Gilbert, and Mesa have segmented attic spaces that require more labor.
• Existing insulation condition. Homes built before the mid-1990s in neighborhoods like Arcadia, central Phoenix, and Tempe often have inadequate or deteriorated insulation. Removing old insulation or adding on top of it affects project scope and pricing.
• Radiant barrier addition. Combining a radiant barrier with blown-in insulation is the most effective strategy for Phoenix attics. This combination adds cost but delivers the highest return on investment in the desert climate.
• Home size. The Phoenix metro has a wide range of home sizes, from 1,200-square-foot starter homes to 4,000-square-foot custom homes in Scottsdale and Paradise Valley. Larger homes cost more but often get better per-square-foot pricing.

How it works

Getting insulation quotes in Phoenix is straightforward:

1. Describe your project. Tell us about your home, the areas you want to insulate, and your timeline.
2. Get matched with local pros. We connect you with up to three insulation contractors in the Phoenix metro area.
3. Compare quotes and hire. Review estimates, ask questions, and choose the contractor that fits your budget and schedule.

There is no cost and no obligation. You are free to compare and decide on your own terms.

What to look for in a Phoenix insulation contractor

Licensing

Arizona requires insulation contractors to hold a CR-3 Insulation license through the Arizona Registrar of Contractors (ROC). Some contractors work under a general contractor’s B-1 license instead. Either way, verify the license is active before signing a contract.

You can check license status online at the Arizona ROC website. Enter the contractor’s name or license number to confirm they are in good standing. The ROC also tracks complaints and disciplinary actions, so check for any red flags.

Insurance

Your contractor should carry general liability insurance and workers’ compensation coverage. Arizona’s ROC licensing requires contractors to maintain a bond, and the ROC recovery fund provides additional homeowner protection. Ask for certificates of insurance and confirm they are current.

Questions to ask

Before hiring an insulation contractor in Phoenix, ask:

• Are you licensed with the Arizona ROC? What is your license number?
• Do you carry liability insurance and workers’ compensation?
• How many insulation projects have you completed in the Phoenix area?
• Do you install radiant barriers? Do you recommend one for my home?
• What type of insulation do you recommend for my home and why?
• What warranty do you offer on labor and materials?
• When will you schedule the work? (Summer attic work requires early morning starts.)

Phoenix climate and insulation needs

Phoenix sits in IECC Climate Zone 2, meaning homes need insulation primarily to block heat rather than retain it. Here are the recommended minimums for the Phoenix metro:

• Attic: R-38 to R-60
• Walls: R-13
• Floors/crawl spaces: R-13 (uncommon in Phoenix slab-on-grade construction)
• Radiant barrier: Strongly recommended in all Phoenix attics

Many Phoenix homes fall short of even these moderate recommendations. Homes built in the 1970s through 1990s across central Phoenix, Tempe, Mesa, and Glendale often have just R-19 or less in the attic. Upgrading to R-38 or higher with a radiant barrier can reduce cooling costs by 15% to 25%.

Why radiant barriers matter in Phoenix

In most climates, traditional insulation (fiberglass, cellulose, spray foam) does the heavy lifting. In Phoenix, radiant heat from the roof is the dominant source of attic heat gain. A radiant barrier reflects up to 97% of that radiant energy before it ever reaches your insulation layer.

The combination of a radiant barrier plus R-38 or higher blown-in insulation is the gold standard for Phoenix attics. This pairing addresses both radiant and conductive heat transfer, keeping attic temperatures 30 to 40 degrees cooler than an unprotected attic.

Seasonal considerations

Phoenix’s extreme summer heat creates a safety concern for attic work. Attic temperatures regularly exceed 150 degrees from June through September. Reputable contractors either schedule attic work for the cooler months (October through April) or start before dawn during summer to protect their crew.

Plan ahead. If you want your insulation upgraded before the next summer, schedule the work in late winter or early spring when contractor availability is better and attic conditions are safer.

Insulation resources

Learn more about insulation options for your Phoenix home:

• Blown-in insulation cost guide - Detailed pricing for the most popular attic insulation option
• Attic insulation guide - Compare materials and find the right R-value
• Spray foam vs. fiberglass - Side-by-side comparison of performance and cost
• R-value guide - Recommended R-values by climate zone
• How to choose an insulation contractor - Evaluation checklist and red flags

Browse all insulation services in Arizona or visit our insulation resource center.

Related services in Phoenix

Planning a bigger project? We also connect homeowners with contractors for:

• Concrete contractors in Phoenix
• Fencing contractors in Phoenix

Bundling multiple home improvement projects can sometimes save money through contractor discounts and shared mobilization costs.