Quick answer
Check the license first: residential AC work in Arizona falls under the Registrar of Contractors' R-39 classification, and the ROC contractor search shows license status and complaints. Then get multiple written estimates, a contract with the license number and dates, and never pay cash or let payments get ahead of the work. The ROC recovery fund covers up to $30,000 per residential owner.
Updated · By the AC Phoenix Pros editorial team · How we research
This guide comes from an independent homeowner information site. We are not a contractor and do not perform HVAC work. We explain how to hire well, and if you email us a request we reply with next steps and, where a vetted licensed local contractor is available, an introduction.
The seven checks
- Confirm the license and its class. Search the company or license number in the Arizona ROC contractor search. The ROC's residential classification for air conditioning is R-39, "Air Conditioning and Refrigeration, Including Solar," which covers installing and repairing comfort air conditioning, evaporative cooling, ventilating and heating. C-39 is the commercial license and CR-39 the dual license (ROC classifications). The ROC advises confirming that the license class allows the work listed in the contract.
- Read the complaint history. The same ROC record shows complaints and discipline. Also check the company's Better Business Bureau profile and recent online reviews, looking for patterns rather than single bad experiences. Our reviews page explains how to weigh them.
- Get more than one written estimate. The BBB advises getting multiple written estimates for repairs and asking each contractor to explain how they determined the required capacity and equipment (BBB). The FTC says a written estimate should describe the work, the materials, the completion date and the price, and warns against automatically choosing the lowest bid (FTC).
- Get a real contract. The ROC recommends a written contract that includes all services, the contractor's license number, and start and completion dates (ROC). The FTC adds the contractor's name, address and phone number, any promises made in conversation, and a written right to cancel within three business days if you signed it in your home.
- Keep payments behind the work. The ROC advises: "Do not allow payments to get ahead of the work," and "Never pay in cash." Special order materials, permits and fees may need to be paid in advance. The FTC says never to make the final payment until the work is done and you are satisfied.
- Expect the contractor to handle permits. Most Valley cities require a permit for some or all AC replacements; our city guides list the rules. The FTC lists a contractor who asks you to get the permits among common scam signs.
- Check rebate eligibility up front. SRP requires an Arizona-licensed contractor for Cool Cash and a BPI-certified participating contractor for its duct rebate, and Efficiency Arizona works only through its qualified contractors. APS customers should be skeptical of any 2026 quote that subtracts an APS equipment rebate, since APS ended those rebates at the start of the year (One Hour Heating & Air Conditioning guide). Ask before you sign, not after.
Questions to ask on the first call
| Ask | Why it matters |
|---|---|
| What is your ROC license number and classification? | You can verify it in minutes, and it must appear on the contract. |
| What is the service call fee, and is it credited toward the repair? | Cost guides put these fees at $75 to $200; the answer avoids a surprise line on the bill. |
| Will you show me the failed part? | A clear answer suggests the diagnosis is checkable. |
| If refrigerant is low, will you find the leak? | The EPA advises repairing leaks rather than topping off, and using a Section 608 certified technician. |
| For a replacement, how did you size it? | The BBB suggests asking how capacity was determined; SRP requires a Manual J load calculation for single-stage systems it rebates. |
| Who pulls the permit? | It should be the contractor. |
Red flags
- Pressure to decide on the spot, or a "today only" price.
- Requests for full payment up front, or cash only.
- Door-to-door offers from a crew "in the area."
- Suggestions to borrow from a lender the contractor knows.
- No license number on the estimate or contract.
All but the last are on the FTC's list of home improvement scam signs.
What protection do Arizona homeowners have?
Arizona requires licensed residential contractors to provide financial protection to their customers. According to the ROC, each residential contracting license is covered for up to $200,000, with a maximum of $30,000 per residential property owner through the Residential Contractors' Recovery Fund. You can file a complaint against a licensed contractor within two years of occupancy or the last work performed. Hiring an unlicensed contractor puts you outside that protection. To report suspected scams, the ROC lists (602) 542-1525.
Using this site
You can email dispatch@acphoenixpros.com with your ZIP code, system details and symptoms. We are not a contractor; we reply with next steps and, where available, an introduction to a vetted licensed contractor. Read about this site for how we work, the contact page for what to include, and the AC repair guide for common faults and prices.
Frequently asked questions
What license does an AC contractor need in Arizona?
A Registrar of Contractors license with a classification that covers air conditioning. For homes that is usually R-39, Air Conditioning and Refrigeration, Including Solar, or the dual CR-39 license, which combines commercial and residential scopes. You can confirm the classification and status in the ROC contractor search before you sign anything.
How much can I recover if a licensed contractor does bad work?
Through Arizona's Residential Contractors' Recovery Fund, up to $30,000 per residential property owner, with each residential license covered up to $200,000 in total. You must first go through the ROC complaint process and the bond claim. The fund only covers work by licensed residential contractors, which is one more reason to check the license.
Can I cancel an AC contract I signed at home?
The FTC says your contract should include a written statement of your right to cancel within three business days if you signed it in your home or somewhere other than the seller's permanent place of business. Send any cancellation in writing and keep a copy. Ask about this right before signing if it is not in the contract.
Sources
Independent homeowner guide operated by SWKM GmbH. Not a licensed contractor. We do not perform HVAC work. More about this site.