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HVAC Repair - Furnace, AC & Heat Pump
No heat, no cooling, or a system that runs but does nothing? We diagnose and repair air conditioners, furnaces, heat pumps and ductless systems. Licensed local techs, flat-rate pricing, and no trip fee, ever.
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What You Get
Warm air in July, a furnace that won’t light in January, or a heat pump that keeps cutting out. Here’s how we handle it.
Same-Day Service: Homes with no heat or no cooling go to the front of the line across Santa Clara and San Mateo counties.
Free diagnostic, 21% off labor: You pay nothing for the diagnosis, and the labor discount comes off your invoice automatically.
A fixed price before we start: Our tech finds the actual cause, then hands you one number. That number doesn’t change while we work.
Fixed on the first visit: Our trucks carry the parts that fail most often: capacitors, contactors, fan motors, igniters, flame sensors, thermostats and refrigerant. Most repairs are done on the spot instead of scheduled for a second trip.
A written warranty: Every repair comes with a one-year labor warranty, and replacement parts are covered by the manufacturer.
What We Repair
AC Not Cooling
Refrigerant leaks, failed capacitors and contactors, dirty coils. We find the leak and fix it, not just top it off.
Compressor Diagnosis & Repair
The most expensive part in the system, we tell you honestly whether repair or replacement makes sense.
Furnace Not Heating
Igniter, flame sensor, gas valve, limit switch, tested in order, not swapped by guesswork. Heat exchanger safety check on every no-heat call.
Heat Pump & Mini-Split Repair
Short cycling, defrost faults, weak airflow from one room. Reversing valves, sensors, line sets and indoor units.
Blower Motor & Control Board Repair
Air that comes out weak, comes and goes, or never arrives at all.
Thermostat & Drain Line Service
Sometimes the fix is a recalibration, not a new unit. A 15-minute drain clear-out prevents water damage that takes far longer to fix.
Electrical Component Repairs
We hold both HVAC and electrical licenses, no separate electrician, no split warranty.
Flexible Financing Available —Upgrade Now, Pay Over Time. Ask us about payment plans.
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.
Why Homeowners in Santa Clara & San Mateo Counties Trust Ozone Service?
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.
What You Get
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
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.
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.
How an HVAC Repair Visit Goes
Step 1
Call or Book Online
Call us during business hours or book online any time. Describe the symptoms and we’ll come prepared with the parts most likely needed for your system.
Step 2
Same-Day Diagnostic
A licensed technician performs a full system assessment: heating and cooling cycle, refrigerant pressure, combustion, 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, amp draw and safe combustion where it applies, and confirm everything is working before we leave. Written warranty provided.
Frequently Asked Questions About HVAC Repair
How much will the repair cost?
It depends on what failed. Start-up components like capacitors, contactors, igniters and flame sensors sit at the low end. Refrigerant work, blower motors and control boards run higher. You’ll get the exact number after the diagnostic and before we touch anything, and the diagnostic is free either way.
What warranty do I get?
Every repair carries a one-year warranty on our labor. Replacement parts are covered under the manufacturer’s warranty, which varies by part and brand. You get it in writing before we leave, not as something we tell you at the door.
My system runs but nothing's coming out. Should I shut it off?
Yes, in most cases. A system that’s running without heating or cooling is usually burning power while something fails inside it, and letting it keep going can turn a small repair into a compressor or heat exchanger job. Switch the thermostat off, leave the breaker alone, and give us a call.
How long does it take?
Most repairs are done in one visit, usually one to three hours including the diagnostic. Jobs that need a part we don’t stock, or a permit for certain gas and electrical work, take longer, and you’ll know that before you approve anything.
Is it smarter to repair or replace?
Depends on age, the cost of the fix, and how the system has been behaving. Roughly: under ten years old with one part failed, repair it. Past fifteen with a failing compressor or heat exchanger and climbing bills, replacement usually costs less over the next five years. We’ll give you both numbers and let you make the call. We don’t push replacements.
Serving the Greater Bay Area
* and other cities across Santa Clara and San Mateo counties
Get HVAC Repair. Request a Tech Today
$0 Diagnostic. Upfront Price. No Surprises.
- go@serviceozone.com
- Santa Clara & San Mateo Counties
