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24 Hour HVAC Service in San Jose
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      • Is It Normal For an AC to Leak Water?
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          • Locked AC Compressor: Diagnosis, Cost, and What to Do Next
          • System Cleaning and Acid Treatment
          • Compressor Burnout Cleanup
      • Electrical Components
      • Defrost Controls and Timers
      • The Refrigeration CircuitExpand
        • Why Your AC Keeps Breaking And How We Actually Fix It
        • How an Air Conditioner Works and the Refrigerant Cycle ExplainedExpand
          • Filter Driers and Sight Glasses
          • Condenser Coils
          • Leak Search
          • Pressure Switches and Sensors
          • Reversing Valves
          • Service Valves and Access Ports
          • Thermostatic Expansion Valves
    • Preventative MaintenanceExpand
      • Coil Cleaning Guides
      • Seasonal MaintenanceExpand
        • System RestorationExpand
          • Coil ReconditioningExpand
            • Is It Normal For an AC to Leak Water?
            • How Much Evaporator Coils Cost and How to Keep Them Clean
            • Why is my AC freezing up?
    • System Design and InstallationExpand
      • Two-story Home Comfort
      • System Commissioning
      • Ductwork and Airflow Design
      • Line Set Routing
      • Load Calcs and Manual-J
      • Thermostat Calibration
      • Refrigerant ChargeExpand
        • Residential Refrigeration Circuit Components Explained: South Bay Field Guide
        • How an Air Conditioner Works and the Refrigerant Cycle Explained
    • 6 Proven Critical Steps to HVAC System Commissioning
    • What Your Independent HVAC Contractor in San Jose Needs You to Know About Private Equity
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24 Hour HVAC Service in San Jose
Downtown san jose skyline at dusk
24/7 Emergency HVAC · San Jose, CA

Air Conditioning Repair in San Jose

Air conditioning repair service in San Jose and across Santa Clara and San Mateo counties. 25 years, thousands of systems, one set of hands. A real technician answers, and most repairs are handled the same day you call.

Call Us Now Send a Text Book a Service Call
4.9 on Google 25+ years in the trade $99 diagnostic
Who shows up
A real tech answers, 24/7

You reach John, the owner and technician, not a call center. Most repairs are handled the same day you call, day or night.

How we work
25 years, one set of hands

The person who quotes your job is the person who does it. No rotating subs, no upsell scripts, no guesswork.

24/7Emergency service
25+ yrsIn the trade
$99Diagnostic, waived with repair
Live San Jose, CA · 5:13 PM PT
☀️ –° San Jose right now7-day South Bay outlook
Today
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78°
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90°
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Heat spike or cold snap, your system feels it first. Call 408-691-5940 for same-day San Jose service.
What happens next
  1. 1You send this over. It takes about a minute.
  2. 2John calls you back, usually within a couple of hours.
  3. 3We set a same-day or next-morning window.

Rather talk now? Call 408-691-5940

Request a Free Estimate

A real technician answers, not a call center. Most requests get a same-day callback.

Smell gas or suspect carbon monoxide? Leave the home now and call 408-691-5940. Do not wait on the form.

No spam. We only contact you about your estimate.

Thanks! We will be in touch shortly.

Expect a call within a couple of hours during business hours. For anything urgent, call 408-691-5940.

Our South Bay Service Area
County coverage lines
Santa Clara County Alameda County San Mateo County Santa Cruz County San Jose (HQ)
24Hour Repair

Air Conditioning Repair in San Jose and the South Bay

Silicon Valley Comfort is an owner-operated air conditioning repair service in San Jose and the South Bay, with same-day diagnostics and 24/7 coverage. We repair central air, heat pumps and ductless mini-splits with factory procedures for airflow, refrigerant charge and safety, day or night.

What We Do

HVAC Services We Offer

Residential and light-commercial heating, cooling, and ventilation across San Jose and the South Bay. Tap any service to see what’s included.

01

Air Conditioning Repair and Service

When the summer heat hits, we deliver fast, professional air conditioning repair and installation in San Jose and nearby cities, from traditional central air to modern ductless mini-splits and high-efficiency heat pumps.

  • AC Repairs and Diagnostics Same-day repair for refrigerant leaks, electrical failures, frozen coils, and weak airflow. Digital gauges and factory diagnostic tools on every call.
  • AC Restoration and Deep Cleaning Condenser coil cleaning, fin straightening, line flushing, capacitor replacement, and leak pressure-testing. Most systems return to about 95% of original efficiency.
  • AC Replacement and Installation Correct sizing and installation of Bryant, Carrier, Lennox, and Goodman with proper evacuation and charge verification.
  • Preventive Maintenance and Tune-Ups Coil washing, drain cleaning, refrigerant check, blower inspection, and thermostat calibration, before failures happen.
AC Repair Details Call 408-691-5940
Systems we service
Bryant® Carrier Goodman Trane Rheem Lennox Daikin
02

Heating Services

Everything from modern heat pump installations to full gravity furnace restorations, a heating specialist for every major heater and furnace type used across the South Bay.

  • Furnace Repair and Diagnostics Ignitors, flame sensors, gas valves, inducer motors, and heat exchanger inspection on gas and electric furnaces.
  • Heat Pump Installation High-efficiency heat pump upgrades sized for South Bay winters, with R-410A and R-454B systems and verified charge.
  • Gravity Furnace Restoration Careful restoration of older gravity and floor furnaces where replacement is not yet necessary or practical.
Heating Services Call 408-691-5940
03

HVAC Diagnostics

Fast, accurate diagnostics with clear next steps so your system gets back to stable, efficient operation. Residential split systems, heat pumps, gas furnaces, and ductless mini-splits.

  • Full System Evaluation Static pressure, superheat and subcooling readings, and electrical testing to find the real cause, not just the symptom.
  • Clear Written Findings You get a plain explanation of what is wrong and what the repair options are before any work begins.
  • Diagnostic Applied to Repair The diagnostic fee is applied toward the repair when you decide to proceed with the work.
Schedule a Diagnostic Call 408-691-5940
04

Service Agreements

Maintenance plans built to keep your system running at peak efficiency, with structured yearly re-commissioning and reliable scheduling.

  • Scheduled Seasonal Visits Planned cooling and heating check-ups so small issues are caught before they become breakdowns.
  • Yearly Re-Commissioning Refrigerant charge, airflow, and combustion verified each year to hold rated efficiency over time.
  • Priority Scheduling Plan members get reliable scheduling when they need service the most.
View Maintenance Plans Call 408-691-5940
05

Equipment Restoration

Many aging systems can still provide efficient, reliable service with the right care, saving the cost of premature replacement. Our approach maximizes the life of what you already own.

  • Deep Cleaning and Recovery Coil cleaning, blower service, and line work that recover much of the lost capacity in an older system.
  • Component-Level Repair Capacitors, motors, contactors, and controls replaced individually instead of scrapping a good system.
  • Honest Repair-or-Replace Advice A straight answer on when restoration makes sense and when a replacement is the better value.
Restoration Details Call 408-691-5940
06

Ductless Mini-Splits

Ductless mini-split installation that provides zoned comfort, energy efficiency, and reliable temperature control for homes, additions, and ADUs.

  • Zoned Comfort Design Single-zone and multi-zone layouts that heat and cool only the rooms you are using.
  • Additions and ADUs A clean solution for garage conversions, additions, and ADUs where extending ductwork is not practical.
  • High-Efficiency Heat Pumps Inverter-driven systems that hold steady temperatures while using less energy than older equipment.
Ductless Systems Call 408-691-5940

Straightforward Pricing

What It Costs, Up Front

No mystery fees and no runaround. Here is exactly what you pay before we ever open a panel. The diagnostic is applied toward your repair if you proceed.

Standard Diagnostic

$99

Regular business hours. Applied toward your repair if you move forward.

After-Hours / Emergency

$149

Nights and weekends. Same work, same tech, just a $50 off-hours bump.

Commercial Diagnostic

$149

For business and light-commercial systems during regular hours.

Commercial After-Hours

$249

Nights and weekends for commercial and business systems.

Time and Materials

Quoted

For unique jobs, with a pre-agreed not-to-exceed cap. No surprises.

Replacements and Installs

Free

Free written estimates on new equipment and full system replacements.

How Parts Pricing Works

We do not mark every part up the same rate. Parts are quoted before we install them, with the supplier invoice attached, so you never pay a flat rate on a $2,000 part.

View Full Price Menu

The $5,000 Rule

Repair or Replace?

Multiply your system’s age in years by the estimated repair cost. If the result tops $5,000, replacement usually makes better financial sense. It is a guideline, not a law. We walk you through the real numbers on your specific equipment.

10 years x $800 repair

$8,000

Usually replace

4 years x $800 repair

$3,200

Usually fix it

Run your own numbers

Enter your numbers
Where We Work

HVAC Service Areas Across the South Bay

One owner, one truck, no call-center hold music. Tap your county to find your city, local pricing, and the common system issues in your neighborhood.

San Jose Santa Clara Sunnyvale Cupertino Mountain View Palo Alto Los Altos Los Altos Hills Milpitas Campbell Los Gatos Monte Sereno Saratoga Morgan Hill
See the full Santa Clara County page
San Mateo San Bruno Pacifica Burlingame San Carlos Redwood City Menlo Park Atherton
See the full San Mateo County page
Santa Cruz Watsonville
See the full Santa Cruz County page
Fremont Hayward Alameda Dublin Emeryville Livermore Newark Pleasanton Union City
See the full Alameda County page
View All Service Areas

Recent Work

Projects We’ve Built

Real installs across the South Bay and the Santa Cruz Mountains, from heat pump conversions to full system replacements. Owner-operated, done right the first time.

Finished high-efficiency york heat pump set on a custom stone pad in boulder creek

Heat Pump Install

Boulder Creek Heat Pump Installation

A high-efficiency York heat pump set on a custom stone pad, replacing failing equipment up in Boulder Creek.

View project
New bryant condenser installed with clean line-set routing in san carlos

AC and Furnace Replacement

San Carlos AC and Furnace Replacement

A new Bryant condenser and furnace with clean line-set routing and a code-compliant install in San Carlos.

View project
Bryant evolution gas furnace and high-efficiency condenser installed in a two-story san jose home

Whole-Home Comfort

Two-Story Home Comfort Upgrade

A two-story San Jose home evened out with a new Bryant furnace and a custom upstairs return for balanced comfort.

View project
John towner, owner and technician at silicon valley comfort

Who We Are

About Us

Silicon Valley Comfort is owner-operated by John Towner and provides fairly priced HVAC services across the South Bay. Our experienced team is available 24 hours a day, 7 days a week.

We treat customers like family and keep your satisfaction and comfort as our top priority. When you call, you get the owner, a technician with 25 plus years in the trade, not a call center.

Read more about Silicon Valley Comfort

San Jose and the South Bay

Choosing an HVAC Company in San Jose

The South Bay climate is specific. We get cool foggy summers on the west side and genuine heat waves inland, so a system running fine in Morgan Hill needs different attention than one near the coast.

HVAC Repair in San Jose That Covers the Full System

Our HVAC services in San Jose cover the full range of residential and light-commercial systems: central air conditioning, ductless mini-splits, gas furnaces, heat pumps, and dual-fuel setups. We diagnose against real numbers, static pressure, airflow, and refrigerant charge measured with digital gauges, so the repair fixes the cause and not just the symptom. For emergency calls after hours or on weekends, the diagnostic is $149, same work and same technician, just a $50 bump for the off-hours call.

Why the Same Part Keeps Failing

Air conditioning repair in San Jose is not just replacing the part that failed. It is finding out why it failed and making sure the rest of the system is not about to follow. A capacitor that blows on a 6-year-old system often means something else is pulling too hard on the electrical side, and we check for that before we hand the system back to you.

Book a Diagnostic See the Full Price Menu
Bryant

Independent Bryant Installer In San Jose

Bryant® Systems Specialist

What You Get With Silicon Valley Comfort

Owner-operated installs from a tech with 25 plus years in the trade. Every system is sized, commissioned, and stood behind by the person who put it in.

  • Load calculations instead of guesswork, so the equipment matches the house and runs efficiently.

  • Airflow, static pressure, superheat, and subcooling are verified so the system runs to spec, not just good enough.

  • The parts you never see done right the first time, so there is nothing to chase down later.

  • Straight talk on the tradeoffs and costs, so you make the call that fits your home and budget.

  • The same tech who installs the system stands behind the work, so support does not disappear after the sale.

Heating

Bryant® Gas Furnaces

High-efficiency, variable-speed and multi-stage models that run longer on low for quieter, more consistent comfort. Sealed combustion improves safety.

Heating & Cooling

Bryant® Heat Pumps

All-electric systems that heat and cool from a single outdoor unit. Ideal for California’s mild winters and homes adding solar or planning future electrification.

Best of Both

Hybrid / Dual-Fuel

A gas furnace paired with a high-efficiency heat pump and smart controls that pick the most efficient heat source based on outdoor temperature and energy costs.

Cooling

Bryant® Air Conditioning

Installed for efficiency and long-lasting reliability. Every install includes full refrigerant line testing, triple evacuation, and thorough quality checks.

Get a free written estimate Call 408-691-5940

See Us In Action

CBS Featured Our Work on Bay Area News

CBS interviewed us during a furnace change-out at a San Jose customer’s home. It is the main video on our channel.

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FAQ

Frequently Asked Questions

Real answers about service, pricing, and what to expect.

General Questions

We serve Santa Clara and San Mateo counties: San Jose, Sunnyvale, Cupertino, Los Gatos, Saratoga, Mountain View, Morgan Hill, and everywhere in between.

Yes. We work with homeowners and small business owners across the South Bay, bringing the same level of craftsmanship to every job.

Yes. There is an extra $50 charge for diagnostics on weekends and after 6pm on weekdays. Call 408-691-5940 and we will work something out.

Pricing & Payment

We offer free estimates on equipment replacements and new installations. For diagnostic and repair work a service-call fee applies, but that fee goes toward the repair if you move forward.

During normal business hours the diagnostic is $99. We use flat-rate pricing for common repairs, and a Time and Materials approach with a pre-agreed not-to-exceed cap for unique jobs.

Multiply your system’s age in years by the estimated repair cost. If the result tops $5,000, replacement usually makes better financial sense.

The compressor, typically $1,200 to $2,500 in parts and labor. On older R-22 systems a compressor failure is almost always a replacement conversation.

Technical Support

We primarily install and service Bryant, but we are trained and experienced across all major brands. If it heats or cools, we can diagnose it.

It matters. Starting in 2025 new equipment uses R-454B. Most modern systems use R-410A, while older systems may still run R-22, now costly and hard to source.

Confirm the thermostat is set to cool, check the air filter, and check the breaker panel. If the outdoor unit’s large insulated copper line is not cold, give us a call.

What Sets Us Apart

You get the owner, not a random dispatched tech. Decades of hands-on experience on every job, not a clipboard and a sales pitch.

Big companies make money on volume, not quality. We take the time to do it right, explain what we are doing, and build something that lasts.

We verify static pressure, total airflow, refrigerant charge against actual superheat and subcooling, temperature split, and controls sequencing before we call a job done.

Still have a question? We are happy to talk it through.

Call 408-691-5940 Book Online

Schedule Your San Jose AC or Heating Repair Today

Do not let a broken system throw off your comfort. Silicon Valley Comfort is San Jose’s trusted HVAC team, ready to quickly and professionally restore your heating and cooling.

Call 408-691-5940 Book Online
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© 2026 Silicon Valley Comfort | 5158 Noella Way, San Jose, CA 95124

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  • Brands
    • Bryant HVAC Products
      • Bryant Gas Furnaces
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    • Daikin Mini Splits in San Jose
  • Blog
    • Indoor Air Quality
      • Is It Normal For an AC to Leak Water?
    • Repairs and Components
      • Condenser Fan Motors
        • 3-Wire vs 4-Wire Condenser Fan Wiring
        • Contactors
        • Capacitors
        • Compressors
          • Locked AC Compressor: Diagnosis, Cost, and What to Do Next
          • System Cleaning and Acid Treatment
          • Compressor Burnout Cleanup
      • Electrical Components
      • Defrost Controls and Timers
      • The Refrigeration Circuit
        • Why Your AC Keeps Breaking And How We Actually Fix It
        • How an Air Conditioner Works and the Refrigerant Cycle Explained
          • Filter Driers and Sight Glasses
          • Condenser Coils
          • Leak Search
          • Pressure Switches and Sensors
          • Reversing Valves
          • Service Valves and Access Ports
          • Thermostatic Expansion Valves
    • Preventative Maintenance
      • Coil Cleaning Guides
      • Seasonal Maintenance
        • System Restoration
          • Coil Reconditioning
            • Is It Normal For an AC to Leak Water?
            • How Much Evaporator Coils Cost and How to Keep Them Clean
            • Why is my AC freezing up?
    • System Design and Installation
      • Two-story Home Comfort
      • System Commissioning
      • Ductwork and Airflow Design
      • Line Set Routing
      • Load Calcs and Manual-J
      • Thermostat Calibration
      • Refrigerant Charge
        • Residential Refrigeration Circuit Components Explained: South Bay Field Guide
        • How an Air Conditioner Works and the Refrigerant Cycle Explained
    • 6 Proven Critical Steps to HVAC System Commissioning
    • What Your Independent HVAC Contractor in San Jose Needs You to Know About Private Equity
  • Contact Us
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