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HVAC Repair in San Jose, CA
Same-Day AC, Furnace & Heat Pump Repair
AC blowing warm air? Furnace not heating? Heat pump stopped working? United HVAC, Plumbing & Electrical provides professional HVAC repair in San Jose, CA, with same-day appointments available and emergency calls accepted 24/7.
Our licensed technicians diagnose and repair central air conditioners, furnaces, heat pumps and ductless mini-splits. We identify the cause, explain your repair options and provide an upfront estimate before work begins.
- Same-Day Service
- Licensed & Insured
- 24/7 Emergency
4.9/5
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CA License
#1061226
24/7
Emergency Calls
25+ Years
Founder's Experience
6,000+
Jobs Completed
HVAC Repair in San Jose for Heating and Cooling Problems
When your air conditioner stops cooling or your heating system will not turn on, you need to know what failed and what it will take to fix it. United HVAC, Plumbing & Electrical provides professional HVAC repair in San Jose, CA for homes and businesses, with same-day service available and emergency calls accepted 24/7.
We diagnose and repair central air conditioners, furnaces, heat pumps, ductless mini-splits, thermostats, ductwork and other heating and cooling equipment. Every service call starts with a system diagnosis so the repair addresses the actual problem rather than just the symptom.
HVAC Systems We Repair in San Jose
Air Conditioning Repair
An AC system can run without actually cooling your home. Warm air from the vents, weak airflow, frequent cycling, unusual noises, frozen coils or a system that will not start can point to electrical, refrigerant, airflow or mechanical problems.
Our technicians inspect the thermostat, electrical components, refrigerant circuit, condenser and evaporator coils, blower and airflow before recommending an AC repair. Depending on the diagnosis, service may involve replacing a capacitor or contactor, repairing a refrigerant leak, correcting airflow or replacing a failed component.
Furnace and Heating Repair
If your furnace is blowing cold air, repeatedly turning on and off or not starting at all, the problem may involve the thermostat, ignition system, flame sensor, blower, electrical controls or restricted airflow.
We service gas and electric heating systems throughout San Jose and diagnose both complete heating failures and performance problems such as uneven temperatures, weak airflow and unusually long heating cycles.
Heat Pump and Ductless Mini-Split Repair
Because a heat pump provides both heating and cooling, a malfunction can affect comfort in any season. Common problems include refrigerant leaks, frozen outdoor coils, reversing valve issues, fan or compressor problems, electrical failures and systems stuck in heating or cooling mode.
We also diagnose and repair ductless mini-split systems, including individual indoor units that stop heating or cooling properly.
Thermostat, Airflow and Ductwork Problems
Not every comfort problem starts with the HVAC unit itself. A faulty thermostat, damaged ductwork, air leaks or restricted return airflow can cause hot and cold rooms, weak airflow and longer system run times.
Checking the entire heating and cooling system helps avoid replacing parts that are still working correctly.
Common Signs You Need HVAC Repair
Schedule an HVAC inspection if you notice:
- AC running but not cooling the house
- Furnace or heater blowing cold air
- Weak or reduced airflow from vents
- Uneven temperatures between rooms
- HVAC system turning on and off frequently
- Unusual banging, rattling, grinding or squealing noises
- Burning, musty or unusual odors
- Water or condensation around HVAC equipment
- Unexpectedly high heating or cooling bills
- Thermostat settings that do not match the indoor temperature
Some problems start with a small component and can lead to more expensive damage if the system keeps running. Early diagnosis may help prevent secondary failures.
What to Check Before Scheduling HVAC Repair
If your air conditioner or heating system suddenly stops working, a few simple checks may help you identify an obvious problem before scheduling service.
Check that your thermostat is set to the correct heating or cooling mode. Inspect an accessible air filter for heavy dirt buildup and make sure supply and return vents aren’t blocked by furniture or other objects.
If the system keeps shutting off, trips a circuit breaker repeatedly, makes unusual electrical noises or produces a burning smell, stop using it and contact an HVAC technician. Avoid opening electrical panels, handling refrigerant lines or attempting internal repairs yourself.
Important: If you smell natural gas near a furnace, leave the building immediately. From a safe location, call 911 and then PG&E at 1-800-743-5000. Do not operate switches or use electrical devices near a suspected gas leak.
United HVAC, Plumbing & Electrical can diagnose persistent heating and cooling problems and recommend the appropriate repair.
Still Having HVAC Problems?
Talk to our San Jose team about a repair visit.
Same-Day and Emergency HVAC Repair in San Jose
Heating and cooling problems do not always happen during regular business hours. United HVAC, Plumbing & Electrical provides same-day HVAC repair when scheduling allows and 24/7 emergency HVAC service for urgent breakdowns in San Jose.
Emergency service may be appropriate when an HVAC system stops operating completely, an electrical or burning smell develops, a refrigerant or water leak is suspected, or indoor temperatures become unsafe.
Our technicians diagnose the system first and explain the recommended repair before work begins. You receive pricing upfront rather than discovering additional charges after the repair is completed.
HVAC Repair Cost in San Jose: What Affects the Price?
The cost of HVAC repair in San Jose depends on the type of system, the failed component, equipment accessibility and the parts required. Replacing a thermostat or capacitor is generally less involved than repairing a compressor, refrigerant leak or major blower motor failure.
After diagnosing the problem, our technician explains the recommended repair and provides an upfront estimate. For older systems or major component failures, we’ll also help you compare repair and replacement options.
Need an HVAC repair estimate in San Jose? Call (408) 539-6936 to schedule a diagnostic visit.
Should You Repair or Replace Your HVAC System?
A breakdown does not automatically mean you need a new HVAC system. Many problems involving capacitors, thermostats, electrical components, motors, airflow or individual controls can be repaired without replacing the entire unit.
Replacement may make more sense when an older system needs repeated repairs, a major component has failed, replacement parts are difficult to obtain or the equipment can no longer heat or cool the property efficiently.
The decision should be based on the condition of the complete system, the repair required and the expected service life after the repair. We inspect the equipment first and explain the available options before recommending repair or replacement.
Local HVAC Repair Throughout San Jose, CA
San Jose HVAC systems have to handle periods of heavy cooling demand during hot weather as well as heating needs during cooler winter nights. Equipment that sits unused for part of the year can also develop problems that only become noticeable when it is switched back on for the season.
We provide local HVAC repair throughout San Jose, including areas such as Willow Glen, Almaden, Evergreen, Berryessa, North San Jose and West San Jose, as well as other communities in Santa Clara County.
Whether the problem is a failed AC, furnace issue, heat pump malfunction or poor airflow, our goal is simple: find the cause, explain the repair and get the system operating properly again.
For HVAC repair in San Jose, call United HVAC, Plumbing & Electrical at (408) 539-6936 or schedule a service visit online.
You can also explore all home services in San Jose, including plumbing and electrical.
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.
Our HVAC Work in the South Bay
Real photos of our technicians and heating and cooling equipment from United HVAC, Plumbing & Electrical projects.
United HVAC, Plumbing & Electrical technicians working with an outdoor heating and cooling unit.
A Gree outdoor heat pump unit featured in our HVAC project photo gallery.
Simple Process
How It Works
Call Us 24/7
Tell us about your HVAC problem.
Schedule a Visit
Same-day appointments when available.
Diagnose & Quote
We find the issue and explain repair costs.
Repair & Test
We fix the problem and check system performance.
Got Questions?
Frequently Asked Questions
HVAC repair costs depend on the type of equipment, the failed component, parts and labor required. Minor electrical or thermostat repairs are generally less involved than compressor failures or refrigerant leaks. United HVAC, Plumbing & Electrical diagnoses the problem and provides a repair estimate before work begins.
Yes, same-day HVAC repair appointments are available in San Jose when scheduling allows. United HVAC, Plumbing & Electrical accepts emergency service calls 24/7. Call (408) 539-6936 to check technician availability and discuss urgent heating or cooling problems.
An HVAC technician checks the components relevant to your system and its symptoms. This may include the thermostat, electrical controls, airflow, blower motor, refrigerant circuit, ignition system or heat pump components. After identifying the problem, the technician explains the findings, available repair options and estimated cost.
We repair central air conditioners, gas and electric furnaces, heat pumps, ductless mini-splits and related HVAC controls. United HVAC, Plumbing & Electrical works with equipment from manufacturers including Mitsubishi Electric, Carrier and Rheem. Parts availability depends on the specific model and repair required.
Many common HVAC problems can be repaired during the initial visit when the necessary parts are available. Complex refrigerant leaks, major component failures or repairs requiring special-order parts may take longer. After diagnosing the equipment, our technician can explain the expected repair timeline.
Yes. United HVAC, Plumbing & Electrical provides residential and commercial HVAC repair in San Jose. Our services cover heating and cooling problems involving air conditioners, furnaces, heat pumps and related equipment. Contact our team with your system details to confirm service availability.
Yes. United HVAC, Plumbing & Electrical holds California Contractor License #1061226 and is bonded and insured. The company is also recognized as a Mitsubishi Diamond Contractor Elite, demonstrating its established relationship with Mitsubishi Electric heating and cooling equipment.
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 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
Serving the Bay Area
HVAC Repair in San Jose, CA
We proudly serve homeowners across the entire Bay Area
Don’t see your city? Call (408)539-6936 to check availability.