Expect to pay roughly $5,500 to $12,000 for a standard HVAC replacement in Arizona, or $12,000 to $20,000 for a high-efficiency system or a larger home. These ranges reflect 2026 published national data (Angi lists $5,000-$22,000 with a $7,500 average for a full replacement), with Arizona rooftop-unit labor typically pushing jobs toward the middle and upper parts of the range. Your exact number depends on system type, tonnage, ductwork condition, and who's doing the install. Get three quotes before you sign anything.
That's the honest range. Anyone who quotes you a firm number over the phone before seeing your house is guessing, or padding.
What drives the price up or down
A few things move the number more than anything else:
- System type. Heat pumps cost more upfront than a straight AC and gas furnace combo, but they heat and cool with one unit.
- Tonnage. A 2,000 square foot house in Gilbert needs more capacity than a 1,200 square foot condo in Yuma. Bigger tonnage means a bigger bill.
- SEER2 rating. Higher efficiency units cost more to buy and less to run. Over ten summers of Arizona AC use, that gap matters.
- Ductwork. If your ducts are old, leaky, or undersized for the new equipment, expect an add-on cost. Skipping duct repair to save money now is how you end up with a system that never performs like it should.
- Roof access vs. ground install. Package units on the roof take more labor to swap than a ground-mounted split system. Most Arizona homes built since the 1980s use rooftop package units, so factor that into labor time.
- Permits and disposal. Your contractor should pull a permit and haul away the old unit. If a quote skips this, ask why.
Typical replacement cost by system type and size
These are estimate ranges pulled together from typical market pricing across the Phoenix metro and outlying cities. Your actual quote will vary by contractor, brand, and home.
| System type | Tonnage | Typical installed range |
|---|---|---|
| AC + gas furnace, standard efficiency | 2–3 ton | $5,500 – $9,500 |
| AC + gas furnace, standard efficiency | 3.5–5 ton | $8,500 – $12,000 |
| AC + gas furnace, high efficiency | 2–5 ton | $12,000 – $17,000 |
| Heat pump, standard efficiency | 2–3 ton | $7,000 – $11,000 |
| Heat pump, standard efficiency | 3.5–5 ton | $9,500 – $13,500 |
| Heat pump, high efficiency | 2–5 ton | $13,000 – $19,000 |
| Rooftop package unit (AC or heat pump) | 2–5 ton | $7,500 – $16,000 |
Package units are worth calling out separately because they're so common on Arizona roofs. A single cabinet holds the whole system, which simplifies install but can mean higher equipment cost per ton than a split system. If your home already has a package unit, replacing it with another package unit is usually cheaper than converting to a split system, since the roof curb and ductwork are already set up for it.
SEER2 and what it actually means for your quote
SEER2 replaced the old SEER rating standard in 2023, and the testing method is stricter, so a SEER2 number and an old SEER number aren't directly comparable even if they look similar. In Arizona's climate zone, the federal minimum for new split-system AC is 14.3 SEER2. Heat pumps sold here need to hit at least 14.3 SEER2 as well. Contractors quoting anything below that minimum for new equipment shouldn't be quoting at all — it's not legal to install.
Going above the minimum costs more per unit but lowers your summer electric bill. In a state where the AC runs eight or nine months a year, that tradeoff pencils out faster than in milder climates. Ask your contractor to show you the estimated annual operating cost difference between the SEER2 tiers they're quoting. Don't judge purely on the sticker price.
Arizona utility rebates
Both Salt River Project (SRP) and Arizona Public Service (APS) have run rebate programs for high-efficiency heat pumps and AC systems in past years. Program availability and rebate amounts change, so don't take a contractor's word for what's currently offered. Check directly with SRP or APS before you sign a contract, and ask your contractor in writing whether the equipment they're proposing actually qualifies. A rebate on paper doesn't help you if the unit doesn't meet the program's efficiency threshold.
Multi-quote math: why three quotes actually matters
Homeowners who get one quote tend to accept it, whatever the number. Homeowners who get three quotes for the same job almost always find a spread of several thousand dollars between the highest and lowest bid, even when the equipment specs on paper look similar. That spread comes from labor rates, overhead, how busy the contractor already is, and sometimes just how much margin they think they can get away with.
A quote should list the equipment brand, model number, tonnage, and SEER2 rating. A lump-sum total by itself tells you nothing. Two contractors quoting "a 3-ton system" could mean very different equipment. Ask for the model number on each proposal so you can compare like against like, and confirm the classification on their license through azroc.gov matches HVAC work specifically.
A word on financing
Zero percent financing offers are everywhere in this industry, and some are legitimate. Others bury a markup in the equipment price to cover the "free" financing, or the rate jumps hard after an introductory period. Before you sign a financing agreement, read the full term sheet, ask what happens if a payment is late, and check whether paying cash gets you a lower price on the same equipment. If a salesperson pressures you to sign the financing paperwork same-day, slow down.
When replacement makes more sense than repair
If your current system is over ten years old and needs a repair that costs more than a third of a new unit, replacement usually wins on cost per year of service. For a deeper breakdown of the repair-versus-replace math specific to Arizona's heat and runtime hours, see our guide on how long AC units last in Arizona.
Common questions
What is the average cost of a new HVAC system in Arizona?
Most Arizona homeowners pay $5,500 to $12,000 for a standard-efficiency system, or $12,000 to $20,000 for high-efficiency or larger homes. Rooftop package units, common across the Valley, often land in the $7,500 to $16,000 range depending on tonnage and efficiency tier.
What's included in a fair HVAC installation quote?
Equipment brand and model number, tonnage, SEER2 rating, labor, permit fees, and disposal of the old unit. A lump-sum number without those line items makes it impossible to compare quotes. Ask for the model number in writing before you sign anything.
Is a heat pump worth the extra cost over a straight AC system?
Often, yes, in Arizona. Heat pumps cost more upfront but handle both heating and cooling in one unit, which can lower long-term operating costs given how many months a year Arizona systems run. Compare quotes for both before deciding.
Who is the cheapest HVAC company?
There's no single cheapest company across Arizona. Pricing varies by contractor, season, and equipment brand. The way to find the best price for your job is to get quotes from at least three licensed contractors and compare line by line instead of looking at the bottom number alone.
Get quotes before you decide
Pricing swings enough by contractor that a single quote tells you almost nothing. Use the quote form below to get matched with licensed HVAC contractors near you, including options in Surprise, Goodyear, Gilbert, Mesa, Casa Grande, and Yuma. Compare at least three before committing to a system.