AC Installation & Replacement in Phoenix, AZ
A new AC is the single biggest appliance purchase most Arizona homeowners make. We treat it that way. Every Instant install starts with a Manual-J load calculation — no lazy 'same size as the old one' guesswork — because an oversized Phoenix AC is the #1 cause of humid homes, short cycling, and premature compressor failure. We right-size, install clean, and back the workmanship for the life of the system.
How We Fix It Right — The First Time.
Assess
In-home load calculation, ductwork check, and system sizing. Takes about 45 minutes.
Design
Three options — good, better, best — with line-item pricing. Financing approvals the same day.
Install
Clean, quiet install crew. Drop cloths down, shoe covers on, old unit hauled away.
Commission
Full system startup, refrigerant charge logged, thermostat programmed, walk-through before we leave.
Signs You Need AC Installation.
- Your AC is 12+ years old
- Recent repair bills are adding up
- Uneven temperatures between rooms
- Unit uses R-22 refrigerant (being phased out)
- APS / SRP bills keep climbing
- Excessive dust or humidity you can't shake
- The outdoor unit is visibly rusted or corroded
Every AC Installation Visit Includes:
- Manual-J load calculation sized to your home — not your neighbor's
- Code-compliant refrigerant line, pad, and disconnect
- New Nest or Ecobee smart thermostat (your pick)
- Duct inspection and minor sealing at no charge
- Haul-away of the old unit
- Full commissioning with superheat/subcooling log
- Lifetime workmanship warranty + manufacturer's parts warranty (10 years typical)
What Customers Say About Our AC Installation.
"Mark is hands down the most honest, skilled and detailed HVAC technician in PHX. Mark takes the time to fully diagnose the issue, provide options to the customer and charges fair prices for any services needed. In addition to service, Mark and the crew did a new install on a Bosch unit and they took care every step of the way to ensure a quality install — now we are enjoying ice cold air all summer long! 5 stars"Brian Iams · Phoenix, AZ · Google
"Instant Heating and Air was incredibly prompt and honest. They arrived on time, explained everything clearly, and completed the AC installation quickly. Professional, responsive, and very reliable. Highly recommend."Ulises Contreras · Phoenix, AZ · Google
AC Installation Questions, Answered.
What does a new AC cost in Phoenix?
Installed pricing ranges from $7,800 for a basic 3-ton single-stage up to $16,500 for a high-efficiency variable-speed system. Most North Valley homes land in the $9,500–$12,000 range.
What SEER rating should I buy in Arizona?
SEER2 15.2 is the 2023+ federal minimum for the Southwest. For most Phoenix homes, 16–18 SEER2 is the efficiency sweet spot — higher ratings only pay back in large, heavily-cooled homes.
How long does the install take?
Most residential replacements are done in a single day. Full-system changeouts with new line-set and duct work can run into a second day.
Do you offer financing?
Yes — 0% APR for qualified buyers plus 12-, 24-, 36-, and 60-month terms through our financing partners.
Is there a warranty?
Manufacturer parts warranty (usually 10 years), plus a lifetime workmanship warranty from Instant. In writing.
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Comfort is Our Obsession.
Let's get your home back to the temperature you pay for. Same-day service, straight-shooter pricing, written warranties.