AC installation in Gilroy, CA
A new air conditioner in Gilroy typically costs about $6,800 to $10,800 installed for common 2 to 4 ton systems. Because Gilroy runs hotter than the rest of the Bay Area, a system sized for general Bay Area weather often falls short, and the ducts in older homes often hold it back.
We size it for your home, handle the permit and explain every option. Emergency service is available 24/7.
The price in plain numbers
Average installed prices in Gilroy from our pricing guide are about $6,800 for a 2 ton system, $8,800 for a 3 ton and $10,800 for a 4 ton. See the AC installation pricing guide.
| System size | Typical home size | Gilroy average installed |
|---|---|---|
| 2 ton | 1,000 to 1,400 sq ft | $6,800 |
| 3 ton | 1,800 to 2,200 sq ft | $8,800 |
| 4 ton | 2,600 to 3,200 sq ft | $10,800 |
Examples of our work
Sizing for Gilroy, not for the coast
Gilroy's summers are hotter than San Jose's, so a unit chosen by copying a neighbor in a cooler city can be undersized here. We size from your home: floor area, layout, insulation, windows and sun exposure, and we check how the unit performs on very hot afternoons.
Old ducts, new unit
Houses on the east side and in Old Gilroy often have original ducts that leak or were never designed for high volume central air. A new efficient unit connected to those ducts disappoints.
We check them and tell you if sealing, a larger return or replacement would help. California's Title 24 energy standards can require duct testing when a system is replaced.
Choose a unit that can handle the dust
Fine topsoil from surrounding farmland coats outdoor coils. We place the unit for airflow, show you how to rinse the coil gently, and recommend a yearly cleaning.
AC or heat pump?
Gilroy has cool winter nights, so a heat pump can heat as well as cool. One heat pump can replace both an old AC and an old furnace.
The Bay Area's rule on new gas furnaces starts in 2029, so it is worth pricing both. See furnace repair in Gilroy.
Rebates and rules
The big California heat pump rebate, HEEHRA, stopped taking new single family reservations on February 24, 2026, and the federal tax credit ended after 2025. See our California HVAC rebates and rules guide.
Gilroy is in Santa Clara County, inside the Bay Area Air District, whose zero NOx standard for new gas furnaces starts January 1, 2029.
Questions to ask any contractor about sizing
- How did you choose the size, and what did you measure in my house?
- How does this unit perform at 100 degrees and above?
- Will you test and seal the ducts, or tell me why not?
- Is the permit included, and who pulls it?
- What does the warranty cover, in writing?
We answer all five in the estimate.
Historic, ranch and tract homes
Old Gilroy homes may need duct work or ductless units. Ranch homes often have ducts in a hot attic.
Tract homes from the 1990s onward usually have workable ducts, but a unit that is 14 years or older may have been sized for a milder summer. We look at the house and tell you what actually needs to change.
Where we install air conditioners
We serve Gilroy, Morgan Hill, San Martin and Hollister. See AC repair in Gilroy and all of our locations.
Brands we service
We repair and install all major brands. Each brand page lists the models we install, the problems we see most and what the warranty typically covers. See how we match a technician to your brand.
Gilroy, CA on the map
Common questions
How much does a new AC cost in Gilroy?
Average installed prices in our guide are about $6,800 for a 2 ton, $8,800 for a 3 ton and $10,800 for a 4 ton.
What size AC does my Gilroy home need?
It depends on layout, insulation, windows and sun, not only square footage. We size it for your home.
Will my old ducts work with a new system?
Sometimes. We test them and tell you what would help.
Is there a federal tax credit?
No. The federal 25C credit ended after December 31, 2025.
Do I need a permit?
In most cases yes. We handle it.
Talk to a person
Call any hour for emergency service, or reach us during business hours for a visit or a quote.