4.9/5 — 2,000+ Five-Star Reviews

Air Conditioner Installation
Bay Area's #1 Choice

When your old unit can no longer cope with the heat, a professional installation offers a fresh start for your home’s comfort. Our team provides guidance to help you select a high-efficiency system tailored to your specific needs.

⚡ Average response: under 60 min

Need Air Conditioner Installation?

  • No hidden costs
  • Same-day service
  • Fully licensed and insured
  • 6000+ completed jobs
Google Rating
5 .9★
Five-Star Reviews
1900 +

4.9/5 Rating

2,000+ Reviews

Licensed & Insured

CA Licensed

Same-Day Service

24/7 Emergency

7+ Years

Bay Area Experts

6,000+

Jobs Completed

Simple Process

How It Works

1

Call Us 24/7

Reach us anytime at
(408) 539-6936.

2

Same-Day Dispatch

A licensed technician arrives at your home, often same day.

3

Diagnose & Fix

Upfront pricing before work begins. No hidden fees, ever.

4

100% Satisfaction

We stand behind every job with our satisfaction guarantee.

Air conditioner installation covers sizing, permitting, and putting in a new cooling system – whether that’s a first AC for a home that’s never had one or a replacement for a unit that’s stopped keeping up. As a licensed home air conditioner installation provider, United HVAC, Plumbing & Electrical installs central, ductless, and split systems across San Jose, Santa Clara, and Cupertino, Campbell, Saratoga and other Bay area cities with the equipment matched to the house rather than sold off a standard package.

AC installation

What Is Professional Air Conditioner Installation and What Does It Involve?

Professional air conditioner installation service means sizing the system to the home, running any needed electrical work, and securing the permit before equipment goes in – not just setting a unit in place. It’s what separates a system that holds up under a Bay Area summer from one that’s undersized or wired incorrectly from day one.

Types of AC Systems We Install

Professional air conditioner installation service covers several system types, each suited to a different home setup:

  • Central air conditioner installation – ties into existing ductwork and cools the whole house through one system; the standard choice where ducts are already in place.
  • Ductless air conditioner installation – skips ductwork entirely, a common fix for older San Jose neighborhoods where homes were built without ducts at all.
  • Split air conditioner installation / split system air conditioner installation – both describe the same setup: an indoor unit paired with an outdoor condenser.

Signs It’s Time to Replace Your Existing Air Conditioner

A unit struggling to keep the house cool on a hot afternoon, paired with a spike in the summer energy bill, is usually the clearest signal a system is past its useful life. Rattling, short-cycling, or an AC that’s already had two or three repair calls in a season points toward replacement being the better move financially. An air conditioner installation near me search is worth running the moment a system starts costing more to keep alive than a new one would cost to install.

Air Conditioner Installation: How the Process Works

Installation of air conditioner equipment starts with our Home comfort advisor visit. The estiamte runs from 1 to 2 hours. He checks the sizing of the house and discuss the type of the system you would like.

AC installation

Load Calculation, Equipment Selection, and Permitting

A Manual J load calculation determines the right tonnage for the home before any equipment gets ordered – undersizing a wall air conditioner installation or a central system means it runs constantly and still doesn’t keep up. California Title 24 sets minimum efficiency requirements for new AC installations, and central AC permits require a ECC test inspection to confirm the installed system meets that standard. The permit and inspection happen before the unit goes in, not after.

What Happens on Installation Day

Single zone mini split project can be done in a day. Multi split projects takes 2-5 days depending on the house size and comlexity.  The outdoor condenser gets set on a level pad with clearance for airflow, away from windows. Refrigerant lines and electrical connections tie in, and for ductless or split systems, indoor units get mounted per zone before the whole system is charged and tested. A final test cycle confirms cooling output at every register or indoor head before the crew leaves.

Air Conditioner Installation Cost in the Bay Area

$3,500 to $8000 – that’s a single-zone ductless mini-split. Central AC on ductwork that’s already there runs $10 000 to $30000. Need new ductwork or a panel upgrade too? That pushes central AC up to $15000, sometimes $45000 or beyond.

Factors That Affect the Final Price

System tonnage and SEER rating drive most of the cost difference between a base unit and a high-efficiency one. Ductwork condition matters for central AC – usable existing ducts keep the job toward the lower end, while damaged or undersized ductwork adds both labor and material cost. Models of the AC play role as well. United install Mitsubishi, Cooper and Henter, Carrier, Bryant and other systems. 

AC installation

Rebates and Incentives Available to Bay Area Homeowners

California offer a huge range of different reabates in the Bay Area. From San Jose Clean energy to Penincula clean Energy. Some programs offer low interest loans for 5 and 10 years. Eligibility depends on the SEER rating installed and the utility territory the home falls under, and program funding shifts throughout the year. United has a dedicated Permit and rebate division.   We confirm current rebate status and paperwork requirements during the initial assessment.

Why Bay Area Homeowners Choose United HVAC, Plumbing & Electrical for Air Conditioner Installation

Getting the permit, the load calculation, and the equipment right the first time is what separates a system that lasts from one that needs a callback within a year. Here’s what backs that up.

Licensed, Insured, and Local

United HVAC, Plumbing & Electrical holds California license #1061226 and carries bonded and insured coverage up to $2M – coverage that extends to commercial air conditioner installation work on multi-unit properties, not just single-family homes. If electrical or refrigerant line work damages property during the install, that’s covered without a separate claim.

7+ Years Installing AC Systems Across the Bay Area

The company has been installing AC systems across San Jose, Santa Clara, and Cupertino, Milpitas, Saratoga, Campbell, Belmont, Palo Alto and other Bay area cities  since 2023, covering everything from older homes with no ductwork to newer builds ready for a straightforward central system. That range means a technician has usually sized a system for a home layout similar to yours before.

AC installation

Upfront Pricing and Same-Day Availability

Every installation includes a written estimate covering equipment, labor, and permit costs before work begins. If something isn’t right after the install, the 100% satisfaction guarantee means we come back and fix it at no charge under the warranty.

Adding AC or replacing an aging system? Call United HVAC, Plumbing & Electrical at (408) 539-6936 – we size, permit, and install same-day across the Bay Area.

100% Satisfaction Guarantee

If you're not completely satisfied with our work, we'll come back and make it right — free of charge. That's our promise to every customer.

Signs You Need Air Conditioner Installation

  • System not functioning properly
  • Increased energy bills
  • Planned upgrades or renovations
  • Unusual noises or odors
  • Age-related wear and tear
  • Water leaks or damage signs

Call Us Today

Available 24/7 • No trip charge • Free estimates

Why Choose United HVAC

  • 7+ years of experience
  • Same-day service
  • 1+ year warranty
  • 6000+ completed jobs
  • 0% interest financing and discounts
  • Fully licensed and insured
  • Well reviewed and highly trusted
  • No hidden costs
  • We work 365 days a year

Got Questions?

Frequently Asked Questions

What is the difference between a central AC system and a ductless mini-split?

Central AC runs the whole house off existing ductwork and one thermostat. Ductless skips ductwork altogether – separate indoor units per zone – which tends to be the better fit for a home that never had ducts to begin with.

Can you install an air conditioner in a home without existing ductwork?

Yes, ductless mini-splits and through-the-wall units both skip the ductwork question entirely. Cutting new duct runs through walls that are already finished almost never makes sense once a ductless system gets you the same zone-by-zone cooling without the construction mess.

What SEER rating should I look for when buying a new AC unit?

15 or higher is a solid baseline for most homes in the Bay Area – enough efficiency to matter without overpaying for marginal gains. It also opens the door to bigger rebates, which helps offset that higher upfront cost.

Are there rebates available for energy-efficient AC installation in the Bay Area?

Yes.

Do I need a permit to install a new air conditioner in California?

Yes, for any central AC, ductless, or split system installation. Central AC permits also require a HERS rater inspection to confirm the installation meets California Title 24 energy compliance standards.

Related Services

Other Heating & Air Conditioning Services

HVAC Repair in San Jose, CA

Waking up to a frigid house in the winter or returning home to suffocating heat in the summer are among life’s most terrible sensations.

Air Conditioner Installation

Expert air conditioner installation for maximum comfort and energy efficiency.

Air Conditioning Repair

Fast, reliable AC repair to restore your cooling system and keep your home comfortable.

Air Conditioning Maintenance

Preventive AC maintenance to extend system life and prevent costly breakdowns.

Heating System Installation

Professional heating system installation for year-round warmth and reliability.

Heating Repair

Fast heating repair services to restore warmth to your home when you need it most.

Heating Maintenance

Scheduled heating maintenance to keep your system running safely and efficiently.

Heat Pump Installation

Energy-efficient heat pump installation for year-round heating and cooling.

Heat Pump Repair

Expert heat pump diagnosis and repair to restore optimal performance.

Heat Pump Replacement

Professional heat pump replacement with modern, high-efficiency units.

Mini Split Installation & Repair

Ductless mini split installation and repair for flexible zone-based climate control.

Air Filter Installation & Replacement

Air filter installation and replacement to improve air quality and keep your HVAC system running efficiently.

Air Scrubber Installation & Maintenance

Air scrubber installation and maintenance to remove airborne contaminants and enhance indoor air quality throughout your home.

Explore Our Other Services

Heating & Air Conditioning

10 services available

Drain & Sewer

4 services available

Water Heating & Filtration

4 services available

Water Line / Repiping

4 services available

Plumbing Services

9 services available

Electrical Services

6 services available

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Julia Garcia
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Called to have my sump pump reassemble and secured . Thank you Beck for a job well done.☺️
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Jasko Huseinovic profile picture
Jasko Huseinovic
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Manuel was great, experienced at his job Got everything fixed in timely manner, well behaved professional and very respectful I’d recommend him any day
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Shailesh Phansalkar profile picture
Shailesh Phansalkar
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Anton did an amazing job. Needed to replace the old shower valve.
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Col Liz Perez profile picture
Col Liz Perez
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I had an impossible tub spout repair. Other plumber said to break through my custom bath tile and kitchen cabinetry to replace the fitting. Ren B. from United researched the fitting and within three minutes removed it—no tile or cabinet cutting required. To top things off, Ren was so courteous and kind. I highly, highly recommend Ren and United for their honesty, fast work, and professionalism. 5+ stars!
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Sj Brownman profile picture
Sj Brownman
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I had a great experience with Cris! He came out to replace the cartridge in my shower and did an excellent job. He was professional, knowledgeable, friendly, and explained everything clearly throughout the process. The replacement was done quickly and efficiently, and my shower is working perfectly now. I really appreciate his attention to detail and great customer service. I would definitely recommend Cris to anyone looking for a reliable and trustworthy plumber!
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Maria xo profile picture
Maria xo
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I had a great experience with Cristopher Villa. He came out to diagnose an error code on my tankless water heater and was able to identify the issue. During his inspection, he also noticed that the unit was leaking and brought the problem to my attention. Cristopher provided me with three different options to address the issue and explained each one clearly. He also made sure the recommended setup included all the necessary add-ons and safety components to ensure the installation would be up to code. Very professional and knowledgeable service.
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Leonel Mendoza profile picture
Leonel Mendoza
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I had a great experience with Cristopher Villa. He did an excellent job redoing the plumbing underneath my kitchen sink and making sure everything was properly connected and working as it should. He also snaked the kitchen drain line to address a recurring blockage. Cristopher was professional, knowledgeable, and took the time to make sure the issue was completely resolved. After the work was finished, the kitchen sink was draining properly again with no issues. I would definitely recommend Cristopher Villa to anyone looking for reliable and professional plumbing service.
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Adam Cataldo profile picture
Adam Cataldo
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I like the service. They charged me a flat rate, which was nice because it ended up taking longer more the plumbing work than I expected
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Lisa Lloyd profile picture
Lisa Lloyd
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Pasha was prompt, focused and organized. Very professional- he knew exactly how to install our new water drop filter system. We are very happy with his work!
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Xinxin Yang profile picture
Xinxin Yang
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Very professional and friendly. Solved my AV issue quickly! THANK YOU!

Serving the Bay Area

Air Conditioner Installation Available In

We proudly serve homeowners across the entire Bay Area

Don’t see your city? Call (408)539-6936 to check availability.

Our Service Area

Santa Clara County
San Mateo County

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Average response time: under 60 minutes