Get $2,500 Off a New AC. Book Your Free Estimate
Beat the Phoenix heat with a new high-efficiency system and we'll take $2,500 off, no obligation, no pressure. Veteran-owned, upfront pricing, and fixed right the first time or it's free.
What We Do
Complete Comfort, Done Right
From a summer breakdown to a full system replacement, Mountainside Air handles it all: cooling, heating, and indoor air.
AC Repair & Replacement
Same-day AC repair and seamless new-system installs: coil cleaning, compressors, refrigerant leaks, thermostats, and right-sized replacements built to last.
Heating & Furnace
Furnace and heat-pump repair, maintenance, and replacement. Dependable, efficient warmth for those cold desert nights.
Mini-Splits & Air Quality
Ductless mini-split installations and duct repair & replacement for even comfort and cleaner, healthier air in every room.
Our Promise To You
Seven Guarantees, In Writing
Once you accept the proposal, the price we quote is the price you pay. Period.
If we misdiagnose or the repair isn't right, the diagnostic and repair are on us.
Find a lower like-for-like quote? We'll match it and refund the difference, plus $100.
Every install meets code, and our workmanship is warranted for the life of the system.
Rated 5.0 Stars
Your Neighbors Trust Mountainside
“In a world full of companies just trying to make a sale, this one actually only sells you what you need.”
“Lifesaver! Had a technician out within an hour and they fixed our AC the same day.”
“They always do a thorough, honest job at a competitive price.”
Proudly Local
Serving the Entire Valley
Our crews are dispatched across Maricopa County every day. Not sure we cover you? Just ask on the form.
Good Questions
Frequently Asked
How much does a new AC system cost?
How fast can you come out?
Are you licensed, insured, and certified?
Do you offer financing or discounts?
What's your guarantee?
Claim Your $2,500 Offer
Book a free, no-obligation in-home estimate and get $2,500 back on your old system, plus a free air scrubber with any high-efficiency install ($1,400 value). Limited time.
Book My Free Estimate