Don’t Wait – Call 602-540-5640

Call 602-540-5640

🏆 Same-Day / Next-Day Replacement Available

Affordable AC Replacement in Phoenix — Installed Right the First Time

Is your old system costing more than a new one would? Same-day or next-day replacement. Seven guarantees — including lifetime craftsmanship.

Call 602-540-5640

Get Fast AC Repair Today

or fill out this form-we’ll call you ASAP

500+

Tune-Ups Completed

5.0★

Google Rating

Same-Day

Available

7 Written

Guarantees

What Your Neighbors Are Saying About Us

John A.
★★★★★
It’s rare when a company impresses me. Mountainside air is one of the best. In a world filled with companies just trying to make a sale, this one actually only sells you what you need. I had them install an a/c unit last year and they were stellar. Looking at having them install my other unit. Always impressed with their interactions and integrity.
Matt M.
★★★★★
Mountainside air was a lifesaver! Our AC went out late Saturday night, and I called early Sunday morning to ask for help. They had a technician out to our home within an hour of our first call, and that technician was able to fix our AC and get us back up and running the same day. We are so grateful that we contacted mountainside air, and we highly recommend them to any family needing help with AC!!
Stacey S.
★★★★★
Had a concern on one of my units, called the team and they scheduled me for the next day as it was late at night. Steve came by and checked out the unit in question and said it is fine.Thanks Mountainside air for continued prompt and courteous service.
Life Is An Adventure
★★★★★
INCREDIBLE!! After receiving a quote for almost double what I ended up paying, I asked around & Mountainside Air came highly recommended as a reliable, trustworthy company. From the first call to the installation of three new units only four days later, the Mountainside Air team was AMAZING! Professional, great communication, a team of five for the one-day install and clean up! Now, it’s me recommending Mountainside Air! Thank you doesn’t say enough . . . from a very satisfied customer!!
Zak H.
★★★★★
These guys are great. Always do a thorough, honest job at a competitive price. I have them out twice a year to two different homes. They've done a full replacement for me as well as other work. They are my go-to AC company from here on out. Keep up the good work, guys.
Joel S.
★★★★★
I can’t say enough about how amazing the team is at Mountainside Air. They are knowledgeable, friendly, professional, on time, and know how to treat customers. I’ve been looking for an HVAC company for a while that can help me keep up my maintenance on my AC units, and I am thankful that I found them. Call them, and they will help! In this day and age, it’s hard to find people who are willing to do the right thing, and Mountainside Air is one of those people. Thank you, Steve and Tom, for saving me from the heat!
Deb C.
★★★★★
Mountainside Air has been great! They respond quickly, are knowledgeable, and courteous. I feel like I have an A/C company I can trust with them!
Elizabeth A.
★★★★★
I have been with this company for about three years, they are absolutely wonderful. Tom and his wife are a great team and will do whatever is in their hands to make sure you get the best service. Thank you guys.
M Koyama
★★★★★
I do not live in the US at this time and, so I was a bit worried about choosing a company to replace my AC/heater at my condo in Scottsdale. But from step one all went smooth and felt I could trust Mountainside Air. I Recommend them.

OUR AC REPAIR SERVICES

Complete AC Replacement, Start to Finish

Full System Assessment

We evaluate your home's size, ductwork, and usage before recommending a unit.

Equipment Selection

Matched to your home, budget, and Phoenix climate.

Old Unit Removal

Full removal and disposal of your existing system.

New System Installation

Certified install with full testing before we leave.

Ductwork Inspection

Check for leaks or sizing issues that reduce efficiency.

Post-Install Walkthrough

We explain your new system before we go.

Looking for affordable AC replacement near you in Phoenix? We price fairly, install same-day or next-day, and back every job with 7 guarantees.

warning signs

Signs It's Time to Replace Your AC

  • System is 12+ years old and breaking down more often
  • Repair costs are approaching 50% of replacement value
  • Energy bills keep climbing with no change in usage
  • System can't keep up, even on mild Arizona days
  • Refrigerant leaks are recurring — older R-22 systems can't be recharged

Free Diagnostic Estimate

“Not sure if repair or replace makes more sense? We’ll assess your system honestly — no pressure.”

Get Free Estimate

Why Choose Us

Why Phoenix Homeowners Choose Mountainside Air

Veteran-Owned & Operated

We run this business the same way we served: with integrity, discipline, and a job done right.

Small Business Responsiveness

You get a real person, fast answers, and a tech who actually cares — not a corporate call center.

Seven Guarantees — Including Lifetime Craftsmanship

We back our work with 7 written guarantees. The craftsmanship guarantee? It lasts forever.

Same-Day & Next-Day Service

We move fast because we know Arizona heat and cold don't wait.

Honest Diagnostics

We only recommend what you actually need. No inflated lists, no pressure.

10% Military & First Responder Discount

Active duty, veterans, and first responders always save.

Faq

Frequently Asked Questions

How much does AC replacement cost in Phoenix?

Most whole-home replacements run $4,000–$10,000 depending on size and brand. Exact pricing upfront — no surprises.

We offer same-day and next-day installation across Phoenix metro.

Trane, Carrier, Lennox, Rheem, Goodman, and more. We’ll recommend the best fit for your home.

Manufacturer parts warranty plus our 7 written guarantees — including lifetime craftsmanship on our labor.

Yes — air handler, condenser, or both. We’ll advise what makes the most sense.

Serving Phoenix & Surrounding Areas

Phoenix

Tempe

Scottsdale

Mesa

Chandler

Gilbert

Ahwatukee

Glendale

Don't Wait for a Breakdown.

Book your AC tune-up today — veteran-owned, seven guarantees.

Call 602-540-5640

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