Furnace Repair in San Jose, CA
Central heating diagnostics, repairs, and maintenance for gas furnaces, heat pumps, and forced-air systems servicing homes throughout Santa Clara County and the greater Bay Area.
- Most Repairs Completed Same Day
- Financing Available
- Up to 10-Year Manufacturer Warranty + 1 Year Labor
- Licensed & Insured in CA: #1060833
Fully Certified HVAC Company
Years of experience
Furnace Repair in a Bay Area Home Is Not a Simple Fix
Homes across this region were constructed over seven decades of evolving building codes, varying duct configurations, and aging electrical infrastructure. A 1960s ranch in Willow Glen, a two-story in Almaden, or a Peninsula home with mismatched return vents — each situation demands its own solution, and the repair is only part of the picture.
San Jose Heating and Cooling has spent 20+ years diagnosing and repairing heating systems throughout Santa Clara County and the surrounding Bay Area. Before we recommend any repair, we evaluate what your home actually requires: the age and condition of your furnace, the state of your ductwork, whether your heat exchanger is intact, and how much heat is escaping through a poorly insulated attic. That is how a properly repaired furnace ends up running reliably and efficiently rather than failing again before the season ends.
An HVAC Company Trusted by the Locals
We measure our success by the relationships we keep, and our customers agree: 4.8/5 stars across 85+ Google reviews.
“We recently had San Jose Heating and Cooling install a new heat pump in our house, and the experience was top-notch from start to finish. A special shout-out to Armando, who …”
Ohad M.
OH
“I recently had a brand-new AC unit and furnace installed, and I couldn’t be happier with the experience. From start to finish, the entire team was professional, respectful, and extremely knowledgeable…”
Moshe M.
MM
“I recently hired San Jose Heating and Cooling to clean out my attic and replace the insulation, and I couldn’t be happier with the results. The team did a phenomenal job transforming …”
California R.
CR
Furnace Repair Services We Provide
Gas Furnace Repair
For homes with forced-air heating systems, a malfunctioning gas furnace can leave the entire house cold within hours. We diagnose and repair ignition failures, faulty heat exchangers, blower motor issues, and gas valve problems. Rather than applying a temporary patch, we identify the root cause so the same failure does not repeat itself two months later. Proper diagnosis means consistent heat delivery, quieter operation, and a furnace that is not pushing itself toward a complete breakdown.Ductless Mini-Split Heating Repair
Mini-split systems solve heating problems that central forced-air cannot address: additions without duct access, converted garages, upstairs rooms that stay significantly colder than the rest of the house, and older homes where running new ductwork would mean opening finished ceilings. Each zone operates independently, so a failure in one area does not compromise the whole house. We repair and service ductless heating systems as a Mitsubishi authorized dealer.Heat Pump Repair
A heat pump functions as both a cooling and heating system. In winter it pulls heat from outdoor air and moves it inside, and in summer it reverses that process. When a heat pump stops heating effectively, the cause could be refrigerant loss, a reversing valve failure, or a defrost cycle issue — all of which require a trained technician. The Bay Area’s mild winters make heat pumps an excellent fit for the region, and keeping them properly repaired ensures you get the full benefit of that efficiency. You can also read more about our heat pump services.
Furnace Tune-Up and Preventive Maintenance
Not every service call means something has already broken. Scheduling a furnace tune-up before the heating season begins is one of the most effective ways to avoid an emergency repair mid-winter. We inspect burners, clean heat exchangers, test safety controls, check airflow, and verify that every component is operating within manufacturer specification. When it fits your situation, preventive maintenance is the lower-cost path to a reliable heating season.
Our Furnace Repair Process
Every repair follows the same structured sequence, whether it is a straightforward fix or a more involved diagnostic situation.
In-Home Diagnostic Assessment
We inspect the furnace, test components, and examine the ductwork and electrical connections before recommending any repair. You receive a clear scope and a firm price, not a rough estimate.
Repair Recommendation
We are certified across Bryant, Carrier, Mitsubishi, Goodman, and Amana, so every recommendation is based on what your system and home actually need rather than on steering you toward a particular brand or unnecessary replacement.
Component Repair or Replacement
Faulty parts are removed and replaced with manufacturer-approved components. If duct sealing or additional corrections are part of the job, that work is completed before final testing so nothing is left half-addressed.
Repair to Specification and Code
All work on refrigerant lines, gas connections, electrical components, and airflow is completed to manufacturer specification and California code, then verified before we consider the job finished.
Testing and Walkthrough
We run the system through its full operating range, confirm temperatures are reaching every zone, and walk you through what was repaired and why before we leave the property.
If you are unsure which side of the line your system falls on, we will give you an honest answer. Many of the furnaces we examine still have useful life remaining, and we would rather say so than sell you a replacement you do not need. If your system can be repaired, see our heating repair and maintenance services.
Repair or Replace? How to Tell
A furnace rarely stops working without giving some warning first. These are the signals that continuing to invest in repairs no longer makes practical sense.
- The system is 15 to 20 years old. Beyond that range, efficiency has typically dropped far enough that a replacement begins recovering part of its own cost through reduced energy bills.
- Repairs are becoming a recurring pattern.One repair is routine maintenance. Two or three within a single heating season is a system indicating where it is headed, and those repair costs accumulate quickly against the price of a new unit.
- Bills increase while usage stays the same. A struggling furnace draws more energy to produce less heat. If your habits have not changed but your gas bill has, the equipment is the most likely variable.
- Rooms never reach a consistent temperature. Uneven heating and persistent cold spots usually trace back to sizing, airflow, or duct problems — issues that survive a repair and continue until they are properly resolved.
- The heat exchanger is cracked. A cracked heat exchanger is a carbon monoxide risk and is typically the threshold where replacement becomes both the safer and more cost-effective option.
- Unusual noises or odors at startup.Banging, rattling, or a burning smell when the furnace fires up requires a technician to assess, and in some cases the diagnosis points toward end of life rather than a viable repair.
What Sets Our Furnace Repairs Apart
Ductwork and Insulation Handled by the Same Team
A properly repaired furnace connected to leaking ducts and an uninsulated attic will never perform the way it should. San Jose Heating and Cooling handles ductwork and attic insulation in house, so the complete system is corrected in one project rather than being divided across multiple contractors and scheduling windows.Electrical Work Covered Under Our License
Furnace repairs occasionally require electrical panel work to safely carry the system load. Our California license covers that electrical work, so a panel issue does not delay your repair while you wait on a separate contractor to become available.
Certified Across Five Major Brands
We are Diamond Certified, a Bryant dealer, and certified with Carrier, Mitsubishi, Goodman, and Amana. Our technicians receive manufacturer training on the specific equipment they service and stay current as systems and standards evolve.
Licensed and Insured in California
Fully licensed in California (#1060833) with standard liability and workers’ compensation coverage, so qualified and accountable professionals are the ones working in your home.
Warranty Coverage on Every Repair
Most replacement components we install carry manufacturer warranties of up to 10 years, and our own workmanship is backed by a 1-year labor warranty. If something comes up after we complete the job, you call us and we make it right.Financing Your Furnace Repair
An unexpected furnace repair is rarely something you budgeted for. When you receive your invoice, you will have the option to apply for financing right then and there, so a necessary repair can be spread out over time rather than paid all at once.
Ready to Restore Heat to Your Home?
Whether you are dealing with a furnace that stopped working overnight or one that has been underperforming for weeks, we are here to help. Fill out the form below and we will get back to you the same day, or call us directly to schedule your visit.
Serving San Jose and the Greater Bay Area
Your home comfort starts close to home. San Jose Heating and Cooling provides furnace repair and heating services to homeowners throughout Santa Clara County, with coverage extending into San Mateo, Alameda, and Contra Costa Counties.
Santa Clara County, CA
- San Jose
- Mountain View
- Palo Alto
- Santa Clara
- Sunnyvale
- Cupertino
- Milpitas
- Campbell
- Los Gatos
- Morgan Hill
San Mateo County, CA
- Redwood City
- Menlo Park
- San Mateo
- Foster City
- Belmont
Alameda County, CA
- Oakland
- Berkeley
- Fremont
- Livermore
- Pleasanton
Contra Costa County, CA
- Concord
- Martinez
- San Ramon
- Hercules
- San Pablo
- Also serving Vallejo
How long does a furnace repair typically take?
Most furnace repairs are completed within the same day. More involved situations involving ductwork corrections or component sourcing may extend into a second visit, but we communicate timelines clearly before any work begins.
How do you determine what is wrong with my furnace?
We perform a full in-home diagnostic inspection that covers the burners, heat exchanger, ignition system, blower motor, airflow, and electrical connections before identifying the issue. The repair recommendation follows the diagnosis, not the other way around.
Do you offer financing for furnace repairs?
Yes. When you receive your invoice, you can apply for financing on the spot, so an urgent repair fits within your budget without requiring a large upfront payment.
What warranty comes with a furnace repair?
Most replacement components carry manufacturer warranties of up to 10 years, and our own labor is covered by a 1-year warranty. If something fails after we complete the job, we stand behind our work.
Do you repair all furnace brands?
We are certified with Bryant, Carrier, Mitsubishi, Goodman, and Amana, and we service all major heating brands. Our technicians are trained to work across equipment types regardless of manufacturer.
Can you repair heating in a home with no ductwork?
Yes. Most homes without ductwork are heated by ductless mini-splits, which work as heat pumps that heat in winter and cool in summer. We diagnose and repair these systems, including refrigerant issues, sensor faults, and communication errors between the indoor and outdoor units. Alternatively, we can install any new HVAC systems and ductwork to a house.
Should I repair my furnace or replace it with a heat pump?
It depends on the age and condition of your current system. A heat pump handles both heating and cooling, so if your furnace and air conditioner are both nearing the end of their useful life, transitioning to a heat pump may be the better long-term investment. If the furnace has several years of life remaining, a targeted repair typically makes more financial sense. We will walk you through both options during the diagnostic visit.
Will my electrical panel need any upgrades as part of the repair?
In some cases, particularly in older homes, the panel may need attention to safely support the heating system. Because our license covers electrical work, we can handle that as part of the same project rather than requiring you to coordinate a separate contractor.
Do you offer emergency furnace repair service?
Yes. We offer 24/7 emergency service along with same-day appointments throughout the Bay Area, because a furnace failure in winter is not something that can wait.
Do you serve my area?
Most likely. San Jose Heating and Cooling serves all of Santa Clara County, extends into the San Mateo Peninsula, and covers parts of Alameda and Contra Costa Counties, including up to Vallejo. Reach out and we will confirm coverage for your address.