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HomeseparatorEmergency AC Repair

Same-Day Emergency AC Repair: Take 21% Off Labor

Is your air conditioning blowing warm air, freezing up, or completely dead? Don’t sweat the heat. Our local, EPA-certified technicians are ready for fast, same-day emergency repairs to restore comfort to your home today – fully backed by a solid warranty.

Serving Santa Clara & San Mateo Counties

Licensed & Insured
Same-day Service
EPA Certified
BBB Accredited

Emergency AC Repair: What You Need to Know

HVAC technician performing AC repair

If your air conditioner is blowing warm air or completely dead, you don’t have to hunt through our site for answers. Here is exactly how we resolve your problem today:

  • Same-Day Service: We prioritize non-cooling homes across Santa Clara and San Mateo counties to ensure your system is up and running today

  • 21% Off Labor + Free Diagnostic: You get a $0 diagnostic fee with your repair and a 21% labor discount applied automatically to your invoice.

  • Upfront Flat-Rate Pricing: Our technician will find the root cause and give you a clear, fixed price before any work begins. No hidden fees, no surprise charges.

  • Fixed in a Single Visit: Our trucks arrive fully stocked with standard parts (capacitors, fan motors, switches, and refrigerants), allowing us to resolve 90% of failures on the spot. 

  • Written Warranty Protection: Every urgent repair is backed by a solid warranty on both parts and labor, giving you total peace of mind.

Licensed HVAC technician standing next to air conditioner condenser during AC service San Jose CA

Refrigerant Leak Detection & Recharge

Low refrigerant doesn’t just reduce cooling – it strains the compressor until it fails. We locate the leak, repair it, and recharge the system to manufacturer spec. Adding refrigerant without fixing the source is a temporary patch that accelerates damage. Our EPA 608-certified technicians handle all refrigerant work in compliance with California regulations.

Capacitor & Contactor Replacement

Capacitors are the most common AC component to fail – they start and run the compressor and fan motors. A failing capacitor shows up as slow startup, humming noises, or repeated breaker trips. Replacement is typically completed in the same visit as the diagnostic.

Compressor Diagnosis & Repair

The compressor is the most expensive component in an AC system. When it shows signs of failure – hard starting, unusual noises, not pumping refrigerant – we give you an honest assessment: whether a targeted repair makes sense or whether the system’s age makes full replacement the better investment. We don’t recommend compressor replacement on systems over 10 years old without a clear cost-benefit case.

Evaporator & Condenser Coil Cleaning

Dirty coils are one of the most common causes of reduced cooling efficiency in Bay Area homes. When coils can’t exchange heat effectively, the system runs longer, consumes more electricity, and fails sooner. We clean both the indoor evaporator and outdoor condenser coils as part of the diagnostic and as a standalone maintenance service.

Thermostat Diagnosis & Replacement

A thermostat that reads temperature incorrectly causes the system to run when it shouldn’t and shut off before the space is cooled. We test thermostat response, wiring, and calibration before recommending replacement – sometimes the fix is a recalibration, not a new unit.

Condensate Drain Cleaning

A blocked condensate drain causes water to back up into the unit and drip inside the home. Bay Area condensate drains clog faster in summer humidity due to algae growth. Clearing a clogged drain takes 15 minutes; the water damage from ignoring it takes significantly longer to fix.

Electrical Component Repairs

AC systems involve contactors, relays, fuses, disconnect boxes, and wiring that degrade over time. Because our team holds both HVAC and electrical licenses, we handle the full scope in-house – no separate electrician, no split warranty accountability.

Which System Is Right for Your Home?

Central Heat Pump

$12,500–$16,500

before incentives

Best for: Homes with existing ductwork

Replaces gas furnace + AC with one electric system. Heating and cooling through existing ducts – duct assessment included.

Ductless Mini-Split

Most Flexible

$3,800–$6,000

before incentives

Best for: Homes without ductwork, 
additions, ADUs, garages

Individual wall-mounted units per zone. 
No ductwork required. Each zone controlled independently – no energy wasted
on unused rooms.

Panel Upgrade

$5,500+

before incentives

Best for: Homes needing additional electrical capacity for heat pump installation
or EV charging

Upgrading your panel ensures your home
is ready for modern electrical loads – heat pumps, EV chargers, and smart home systems. Licensed in-house electricians, permitted and inspected.

What a Heat Pump Actually Costs After Incentives

The gross cost of a heat pump installation is only part 
of the picture. Bay Area homeowners have access to three stacking incentive programs that significantly reduce
out-of-pocket cost.

We identify which programs apply to your project, ensure 
the installation meets all rebate program requirements, 
and handle the documentation. Most contractors don’t 
touch the paperwork – we do.

Sample Сalculation

San Jose homeowner, heat pump installation, standard income:

SVCE

$2,500

CA Energy-Smart Homes

$5,750

Net savings

$8,250

Rebate availability changes quickly and is often first-come, first-served or waitlisted. We calculate your exact eligibility and current stacking options as part of the free estimate – no guesswork, no surprises.

This Service May Cost 
Less Than You Think

Bay Area utility programs and state energy incentives may offset a significant portion of your cost. We check what applies to your home and handle all the paperwork – as part of your free estimate, at no charge.

Project estimate. Detailed Scope of Work

How an AC Repair Visit Goes

Step 1

Call or Book Online (24/7)

We take your call around the clock. Describe the symptoms – we ask the right questions and come prepared with the parts most likely needed for your issue.

Step 2

Same-Day Diagnostic

A licensed technician performs a full system assessment: refrigerant pressure, electrical components, airflow, and thermostat response. We identify the root cause, not a symptom guess.

Step 3

Upfront Price Before Any Work

We explain what we found, what it takes to fix it, and the exact cost. You approve the repair before we start. No surprises on the invoice.

Step 4

Repair & System Verification

We complete the repair, verify system operation – temperature output, airflow, and refrigerant charge – and confirm everything is working before we leave. Written warranty provided.

Why San Jose Homeowners Choose Ozone Service for AC Repair

Diagnosis First. Price Second. Repair Third.

We don't recommend repairs before we've found the actual cause. Every service call starts with a full system diagnostic - airflow, refrigerant pressure, electrical components, and thermostat response. You hear the diagnosis before you hear a price. And you hear the price before we start any work.

HVAC and Electrical Under One License

AC failures frequently involve electrical components - contactors, wiring, disconnect boxes, and panel capacity. When your HVAC tech can't touch the electrical side, you're scheduling two appointments and splitting the warranty. We carry both licenses. One technician, one invoice, one warranty.

No Subcontractors - Ever

Every technician is a direct Ozone employee. Not a sub, not a seasonal hire. Background-checked, EPA 608 certified, and trained to work on the brands and systems common in Bay Area homes.

Better Business Bureau Accredited Business badge.

Refrigerant pressure check

Low refrigerant doesn’t just reduce cooling – it strains the compressor until it fails. We locate the leak, repair it, and recharge the system to manufacturer spec. Adding refrigerant without fixing the source is a temporary patch that accelerates damage. Our EPA 608-certified technicians handle all refrigerant work in compliance with California regulations.

Evaporator and condenser coil cleaning

Dirty coils reduce efficiency by up to 30% and cause the system to run longer and hotter

Electrical components (capacitors, contactors, wiring)

These degrade before they fail so catching them early costs a fraction of emergency repai

Condensate drain flush

Prevents water damage and mold buildup common in Bay Area summer humidity

Airflow and filter assessment

Restricted airflow is the single most common cause of early system failure

Thermostat calibration check

A 2°F error makes the system run longer than it needs to, wasting energy and causing wear.

Full system performance report

Written findings with recommendations. You keep the report with no commitment required

Authorized Dealer & Installer

Daikin-Logo
logo coodman
Mitsubishi
Logo of the Carrier Corporation
Gree electric appliances logo
Gree electric appliances logo
Logo bryant
harvest logo

Real Repairs, Real Results

Our in-house team finished all of the projects shown here. They correctly diagnosed the problem, fixed it, and checked it before we left the house.

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What Our Customers Say

Commercial AC Repair in the Bay Area

We service AC systems in commercial properties across San Jose and Santa Clara County – office buildings, retail spaces, multi-unit residential, and light industrial. Commercial AC failures affect employees, customers, and inventory, which is why we prioritize commercial calls and offer scheduled maintenance agreements for property managers.

Commercial systems follow the same diagnostic standard: root cause first, upfront price before work begins, and permitted repairs where required. For larger systems, contact us directly to discuss scope and response time.

Ozone Service technician inspecting or adjusting an HVAC system outdoors.

AC Repair Questions - Answered Honestly

How much does AC repair cost?

The cost depends entirely on what’s wrong. Start-group replacement, including capacitor and contactor – starts at $195. Refrigerant charge (R410, R454, R32) – $300. We give you the exact price after the diagnostic, before starting any work. No trip fees ever.

Every repair comes with a written warranty on parts and labor. If the same issue returns within the warranty period, we fix it at no charge – no diagnostic fee, no trip charge. Up to 1-year labor warranty on every repair work and up to 5-year parts warranty depending on the manufacturer.

If you see ice forming on the indoor unit or refrigerant lines, yes, turn it off and call us. Running with frozen coils forces the compressor to work without proper refrigerant flow and causes compressor damage. If there’s no ice visible, you can leave it running while waiting for the technician, but don’t lower the thermostat to force more cooling – it won’t help and adds wear.

Most standard repairs – capacitor, contactor, thermostat, and condensate drain – are completed in 1–2 hours during the diagnostic visit. More complex repairs involving refrigerant work or electrical components may require a return visit if specific parts need to be ordered. We give you a timeline estimate before starting.

There’s no universal answer, but there’s a straightforward framework for making the decision. We give you both numbers during the diagnostic so you can decide without sales pressure.

Get a Free Tune-up or Diagnostics

Send us your request and we’ll get back
to you shortly

Project estimate. Detailed Scope of Work

Serving the Greater Bay Area

Sunnyvale
Santa Clara
Cupertino
Mountain View
Campbell
Los Gatos
Los Gatos
Palo Alto
Milpitas
Fremont
Redwood City
San Mateo
Menlo Park
 Morgan Hill

* and other cities in Santa Clara, San Mateo, and Alameda counties

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