4.9/5 — 2,000+ Five-Star Reviews
HVAC Repair in San Jose, CA
Bay Area's #1 Choice
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. Since 2019, United HVAC, Plumbing & Electrical has been protecting San Jose citizens from these terrible circumstances.
- 25+ Years
- Licensed & Insured
- 24/7 Emergency
4.9/5 Rating
2,000+ Reviews
Licensed & Insured
CA Licensed
Same-Day Service
24/7 Emergency
25+ Years
Bay Area Experts
6,000+
Jobs Completed
Simple Process
How It Works
Call Us 24/7
Reach us anytime at
(408)539-6936.
Same-Day Dispatch
A licensed technician arrives at your home, often same day.
Diagnose & Fix
Upfront pricing before work begins. No hidden fees, ever.
100% Satisfaction
We stand behind every job with our satisfaction guarantee.
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 can begin with a relatively small component and lead to more expensive damage when the system continues to run. An early diagnosis can often prevent a secondary failure.
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.
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.
Signs You Need HVAC Repair in San Jose, CA
Why Choose United HVAC
Got Questions?
Frequently Asked Questions
The cost depends on the system, the failed component and the amount of diagnostic and repair work required. Replacing a thermostat or electrical component is typically less involved than repairing a refrigerant leak, compressor or other major component. We diagnose the problem first and provide an estimate before the repair begins.
Yes. United HVAC, Plumbing & Electrical accepts emergency HVAC service calls 24/7. Same-day appointments are also available for many heating and cooling problems.
We repair central air conditioning systems, furnaces, heat pumps, ductless mini-splits, thermostats, ductwork and other residential and commercial heating and cooling equipment.
Common causes include a dirty filter, restricted airflow, a frozen evaporator coil, low refrigerant, a refrigerant leak, thermostat problems or a failed electrical or mechanical component. A technician can test the system and determine which problem is preventing it from cooling properly.
A furnace may blow cold air because of thermostat settings, ignition or flame sensor problems, restricted airflow, a dirty filter, blower issues or another system fault. If the furnace repeatedly starts and stops or never begins heating, it should be diagnosed before continued operation.
Repair usually makes sense when the system is otherwise in good condition and the problem is limited to a repairable component. Replacement becomes more practical when equipment is older, requires frequent repairs, has a major component failure or can no longer provide reliable heating or cooling.
Many common HVAC repairs can be completed during the initial service visit when the required part is available. More complex problems involving refrigerant leaks, major components or specialty parts may require additional time. The technician can give you a clearer timeline after diagnosing the system.
Yes. We provide HVAC repair throughout San Jose and serve other communities in Santa Clara County. Service includes heating, air conditioning and heat pump diagnostics and repair for both routine problems and urgent system failures.
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 Available In
We proudly serve homeowners across the entire Bay Area
Don’t see your city? Call (408)539-6936 to check availability.