Furnace Repair
Reliable Furnace Repair for Sacramento Homes and Businesses
When your furnace stops working, starts making unusual noises, or struggles to keep your home warm, fast diagnosis and professional repair can restore comfort before a minor issue turns into a costly breakdown. Clarke & Rush has provided furnace repair throughout Sacramento and surrounding communities since 1963, and our NATE certified technicians are available to diagnose and repair furnaces from virtually any manufacturer.
Whether your furnace won’t start, is blowing cold air, cycles constantly, or has stopped working altogether in the middle of the night, our team can identify the root cause and recommend the most cost-effective solution. We explain what we find, what it costs to fix, and what your options are before any work begins. We repair furnaces throughout Sacramento and surrounding communities, including Roseville, Folsom, Elk Grove, Citrus Heights, Rancho Cordova, and Carmichael.
Common Furnace Problems We Repair
Most furnace problems fall into a handful of categories, and catching them early usually means a repair instead of a mid-winter breakdown.
Furnace Not Turning On
If your furnace won’t start at all, the most common causes are a thermostat set incorrectly or with dead batteries, a blown fuse or tripped breaker, a failed ignition system, or a safety switch that’s shut the system down on purpose. Furnaces have several built-in safety switches: on the door panel, the flame sensor, and the limit switch, designed to stop the system rather than let it run unsafely, so a furnace that won’t start isn’t always broken. Sometimes it’s doing exactly what it’s supposed to do. Our technicians check each of these systematically rather than guessing at the most likely cause.
Furnace Blowing Cold Air
When your furnace runs but isn’t producing heat, common causes include a dirty burner, an ignition problem, a failing flame sensor, a clogged air filter restricting airflow, or an interrupted gas supply. A flame sensor issue is one of the most common causes we see. It’s a small component that confirms a flame is actually present, and when it gets coated with carbon buildup, the furnace can shut the gas valve off almost as soon as it ignites, which results in cold air blowing from the vents.
Unusual Furnace Noises
Banging, rattling, squealing, and grinding each point to a different issue: loose ductwork, a failing blower motor, a worn belt, or components that have come loose inside the cabinet. A distinct boom or bang when the furnace starts up can indicate delayed ignition, where gas builds up briefly before igniting instead of lighting immediately. That’s worth having inspected quickly, since it puts extra stress on the heat exchanger every time it happens.
Short Cycling
A furnace that turns on and off in short bursts is usually dealing with restricted airflow, a dirty filter, overheating, a failing limit switch, or a thermostat that isn’t reading the room accurately. Short cycling is hard on every component in the system, since it multiplies the number of startup cycles the furnace goes through in a season, and it’s worth diagnosing before it turns into a bigger repair.
Uneven Heating Throughout the Home
Cold rooms and inconsistent temperatures usually trace back to ductwork problems, airflow restrictions, a failing blower motor, or a system that was sized incorrectly for the home when it was installed. If one part of the house has always run colder than the rest, that’s often a duct design issue rather than something wrong with the furnace itself, and it’s worth having both evaluated together.
Why Sacramento Homes Are Uniquely Hard on Furnaces
California homes don’t often have basements, so unlike much of the country where a furnace sits in a stable, climate-controlled space below the house, most furnaces in the Sacramento area end up in the attic, a closet, or a garage instead. An attic-mounted furnace spends the entire summer sitting in extreme heat, well over 100 degrees, even when it isn’t running, and that swing between a scorching attic in July and a system that’s expected to start reliably on a cold morning in January puts real stress on wiring, seals, and electronic components. It’s a tradeoff built into how California homes are constructed generally, not something unique to this region, but it’s still a real factor in why a furnace here can fail differently than one sitting in a basement.
Then there’s tule fog. Central Valley winters bring dense, low-lying fog that can blanket the region for days at a time, and it comes with sustained high humidity that settles into attics, crawlspaces, and vent systems. That moisture accelerates corrosion on flue pipes, heat exchangers, and electrical connections in exactly the areas where a small crack or a corroded contact turns into a bigger problem. Combine that with a furnace that only runs a few months a year to begin with, and you get a system where corrosion and wear can develop quietly during the wet months and go completely unnoticed until the first cold snap forces the furnace to actually work.
Furnace Safety: Carbon Monoxide, Cracked Heat Exchangers and Gas Smell
Unlike an air conditioner, a malfunctioning furnace can create a genuine safety hazard, not just a comfort problem. Gas furnaces produce carbon monoxide as a normal byproduct of combustion, and that gas is supposed to vent safely outside the home through the flue. A cracked heat exchanger, corroded venting, or a blocked flue can allow carbon monoxide to enter the living space instead, and because it’s colorless and odorless, most homeowners have no way to detect it without a working carbon monoxide detector.
Warning signs worth taking seriously include a stale or unusually warm smell near the furnace, soot around the unit, a pilot light or burner flame that burns yellow instead of blue, and any headache, nausea, or dizziness that improves when you leave the house and returns when you’re back inside. If you notice any of these, turn the furnace off, ventilate the home, and call for service right away.
A gas smell is a separate issue from carbon monoxide, and it deserves the same urgency. Natural gas itself is odorless, so PG&E, Sacramento’s natural gas provider, adds a distinctive sulfur-like odor specifically so a leak can be detected. If you smell it near your furnace or anywhere in your home, PG&E’s guidance is direct: leave the area immediately, avoid using light switches, phones, or anything that could create a spark on your way out, and call 911 once you’re a safe distance away. From there, you can also report the leak to PG&E directly at 1-800-743-5000.
Every furnace inspection our technicians perform includes checking the heat exchanger and venting system, not just the components related to your specific complaint, because a cracked heat exchanger doesn’t always come with an obvious symptom until it’s already a hazard.
What Affects the Cost of Furnace Repair
Repair pricing comes down to a few factors: which component failed, whether the part is already stocked on our trucks or needs to be special ordered, how old and how accessible your system is, how complex the diagnosis turns out to be, and whether the job requires a second technician for a larger repair. An ignitor or flame sensor replacement is a routine, lower-cost repair. A blower motor or gas valve replacement costs more because of the part itself and the labor involved. A cracked heat exchanger is typically the point where we’ll walk you through whether repair or replacement makes more sense, since repairing a heat exchanger on an older furnace often isn’t cost-effective compared to replacing the unit. Whatever the issue, we quote the full cost before we start work, so there’s no surprise on the invoice.
Emergency Furnace Repair in Sacramento
When temperatures drop into the 30s overnight, a broken furnace stops being an inconvenience and becomes a real problem, especially for kids, older adults, and pets. Clarke & Rush provides emergency furnace repair for complete system failures, ignition problems, electrical issues, and any situation involving a suspected carbon monoxide concern, which we treat as urgent regardless of time of day. Our trucks are stocked with the parts and tools needed to diagnose and repair most problems on the first visit.
Our Furnace Repair Process
- We listen first. We ask what you’ve noticed, sounds, smells, changes in heating performance, so we know where to start looking.
We inspect the system. That means checking the heat exchanger, ignition system, burners, blower motor, safety controls, thermostat, electrical connections, and venting.
We explain what we found. You hear the cause, not just the symptom, along with what’s involved in fixing it.
- We give you a price before we start. You approve the work before we touch anything, and the price we quote is the price you pay.
We repair and verify. Once the fix is complete, we run the system through a heating cycle and confirm safe operation, including checking for carbon monoxide, before we leave.
We flag anything else worth knowing. If we notice a filter that needs changing or a maintenance issue building, we’ll tell you, whether or not it’s part of today’s visit.
Types of Furnaces We Repair
Not all furnaces work the same way, and understanding which type you have helps explain what a repair actually involves. Single-stage furnaces run at full capacity every time they turn on, which is simple and reliable but less efficient and prone to more noticeable temperature swings. Two-stage furnaces can run at a lower capacity for milder days and only kick up to full power when needed, which reduces wear and improves comfort, but it also means there are more components that can fail. Variable-speed furnaces adjust output continuously and are the quietest and most efficient option, though repairs on these systems typically involve more sophisticated electronics than a single-stage unit. Knowing which category your system falls into before a technician arrives can also help you describe the problem more precisely over the phone.
Ignition systems vary too. Older furnaces often use a standing pilot light that stays lit continuously, while most furnaces installed in the past two decades use electronic ignition, either a hot surface ignitor or an intermittent pilot system that only lights when the thermostat calls for heat. Electronic ignition is more efficient, but the ignitor itself is also one of the most common failure points we see, since it’s a fragile component that wears out with repeated heating and cooling cycles. Whichever system you have, our technicians know the specific failure points for each, so the diagnostic starts in the right place instead of a generic checklist.
Furnace Repair vs. Furnace Maintenance
These two get used interchangeably, but they’re different services. Maintenance is a scheduled visit, usually once a year, where a technician inspects and cleans the system before anything has actually failed, checking the heat exchanger, burners, ignition system, and safety controls while everything is still working. Repair is what happens after something has already gone wrong: the furnace won’t start, isn’t heating, or is making a noise, and the visit is focused on diagnosing and fixing that specific failure. Many furnace repairs we see could have been caught earlier, or avoided altogether, with a maintenance visit the previous fall, which is part of why we build tune-ups into our Energy Saving Plan rather than treating them as a separate afterthought.
Certified Furnace Repair Technicians in Sacramento
Clarke & Rush is a Carrier Factory Authorized Dealer and American Standard Platinum Dealer, which means our technicians go through specific training beyond general HVAC requirements. Our team also holds NATE certification, the industry’s recognized standard for HVAC technical competency, and we’re certified installers of REME Halo air purification products for customers who want to pair a repair visit with better indoor air quality. Combined with more than 60 years of service history in the Sacramento area, that’s a level of training and manufacturer backing that many independent operators can’t match.
Furnace Brands We Service
Our technicians repair furnaces from virtually every major manufacturer, regardless of who installed the system originally. We’re a Factory Authorized Dealer of Carrier and an American Standard Platinum Dealer, so if you’re looking to install a new system or have questions specific to either brand, that’s where our manufacturer training runs deepest, although we do install other brands as well. But for repair work, brand isn’t usually the limiting factor; the failure points we described above, ignition systems, flame sensors, blower motors, heat exchangers, are common across nearly all gas furnaces, and our technicians are equipped to diagnose and fix them regardless of the nameplate on the unit or the type of furnace.
Gas Furnace vs. Electric Furnace Repair (Air Handler)
The most common furnace type in the Sacramento area is gas, followed by heat pumps and electric furnaces, and the repair process differs between them. Gas furnaces involve burners, an ignition system, a gas valve, and a heat exchanger that separates the combustion process from the air circulating through your home, which is where the carbon monoxide safety checks come in. Electric furnaces skip combustion entirely and heat air using electric resistance coils, which removes the carbon monoxide risk but introduces its own failure points, particularly the heating elements themselves and the electrical components that control them.
In practice, many of the systems homeowners in this region call an ‘electric furnace’ are actually an air handler paired with a heat pump rather than a true standalone electric furnace. An air handler doesn’t generate heat on its own, it houses the blower and coil that circulate air already heated by the heat pump outside, and some air handlers include a backup electric coil for the rare stretch of weather too cold for the heat pump to keep up alone. True electric resistance furnaces, which generate all their own heat the way a gas furnace does but with coils instead of a burner, are less common in Sacramento than they once were, most electric-only heating here now runs through a heat pump and air handler setup instead.
Electric furnaces are also generally more expensive to operate in this region given current gas and electricity rates, which is worth factoring in if you’re weighing a repair against replacing with a different type of system entirely. Whichever type you have, our technicians are equipped to diagnose all types, and we’ll tell you plainly which one you’re dealing with if you’re not sure.
Repair or Replace Your Furnace?
One of the most common questions homeowners ask is whether repairing an older furnace still makes financial sense.
Repair usually makes sense when:
- The furnace is under 10 years old
- The needed repair is relatively minor
- Energy bills have stayed reasonable
- The heat exchanger is intact
Replacement is worth considering when:
- The furnace is 12 years or older*
- Repairs are becoming frequent
- Utility costs keep climbing
- The heat exchanger is cracked
- You’re interested in a heat pump system that handles both heating and cooling from one unit
If you do decide on a furnace replacement is the better move, it’s worth knowing how the current rebate landscape works. SMUD offers up to $3,000 for a qualifying high-efficiency heat pump. Roseville Electric Utility also offers up to $2,500 specifically for variable stage heat pump systems, which is worth a look if you’re open to moving away from gas altogether, since utilities in this region are increasingly structuring incentives around electrification rather than gas-to-gas furnace swaps. Our team can walk you through what’s currently available and whether a heat pump makes sense for your home either way. Current rebates and their details are on our rebates page. If your system falls into the repair category instead, we’ll walk you through your options without any pressure to decide on the spot.
*Heat exchanger warranties vary by manufacturer, and some run as long as 20 years, so we may not recommend replacement at the 12-year mark if your system is still covered. Contact Clarke & Rush and we can look up what warranty applies to your specific system before you decide anything.
Financing for Furnace Repair
Furnace repair, especially in the middle of a cold snap, doesn’t always come at a convenient time financially. Clarke & Rush offers Synchrony financing on service and repair work, including 0% interest for 6 months on purchases of $1,000 or more, along with fixed payment options at 7.99% APR over a 5 year term or 9.99% APR over an 11-year term for larger repair jobs. We’ll walk you through the financing options that apply to your specific repair at the time of your estimate. (Rates quoted are as of 2026. Check the financing page for current rates)
Current Furnace Repair Specials
We regularly run seasonal specials that can apply to a furnace repair visit, including a furnace tune-up special you can pair with a repair call, and standing discounts of 10% for military service members and 10% for senior citizens. Current specials shift toward heating-specific offers as winter approaches, so ask about active offers when you call to schedule.
Protect Your Furnace With the Energy Saving Plan
For homeowners who want to avoid furnace repair calls altogether, or at least make them less expensive when they do happen, our Energy Saving Plan (ESP) membership includes a comprehensive heating and AC tune-up twice a year, valued at over $350, along with a full inspection of your heat exchanger, ignition system, safety controls, and the other components that most commonly fail. ESP members also save 10% on repairs, get priority scheduling ahead of non-member appointments, and receive a one-year extended warranty on specific repairs with no diagnostic fee. Membership is $199 a year for one system, $289 for two systems, and $379 for three, with additional units at $90 each. A fall tune-up under this plan is exactly the kind of visit that catches a weakening flame sensor or a developing heat exchanger issue before it becomes a cold night with no heat, or worse, a safety concern.
Improve Indoor Air Quality During Your Furnace Repair Visit
Forced air heating can dry out indoor air significantly over the winter months, and if a repair visit already has an HVAC technician inside your home working on the system, it’s a convenient time to ask about indoor air quality. Clarke & Rush is a certified installer of REME Halo air purification products, which install directly into your existing ductwork and work continuously to reduce airborne particles, odors, and surface contaminants throughout the house. It’s not part of every repair, but if dry air, allergies, or general air quality have been a concern in your home during the heating season, it’s worth asking about while we’re already there.
How Often Should You Have Your Furnace Serviced?
Most manufacturers, including Carrier, recommend servicing a furnace once a year, ideally in the fall before heating season starts, to catch developing problems before they turn into repair calls or, worse, a safety issue. A fall furnace tune-up checks the heat exchanger, ignition system, and safety controls while the system is still under light use, which is exactly when a technician is most likely to catch a flame sensor that’s starting to weaken or a heat exchanger that’s showing early signs of stress before it fails outright on a cold January night. Homeowners who skip regular service tend to call us for repairs more often, and the repairs tend to be more expensive and less predictable when they finally do call.
What to Do While You Wait for a Technician
If your furnace has stopped working and you’re waiting on a repair appointment, a few things are worth checking yourself first. Confirm the thermostat is set to heat, not cool or off, and that the target temperature is set above the current room temperature. Check your breaker panel for a tripped breaker, and check that the furnace’s own power switch, often a light switch style toggle near the unit, hasn’t been accidentally switched off. If you have a standing pilot furnace, check whether the pilot light is lit, and if it’s gone out, most manufacturers include relighting instructions printed on the unit itself. Replace the air filter if it hasn’t been changed recently, since a severely clogged filter can cause the system to shut down on its own as a safety measure. None of this replaces a proper diagnostic, but it can save you a service call if the fix turns out to be something simple, and it gives our technician useful information if it isn’t.
If you smell gas, notice soot, or suspect a heat exchanger crack, skip all of this. Leave the house, and call for emergency service rather than troubleshooting yourself.
Preparing Your Furnace for Sacramento Winter
A few simple habits before the cold sets in each year go a long way toward avoiding an emergency repair call in January. Check your air filter before winter sets in. It’s likely the same filter your AC has been using all summer, so it’s easy to forget about once the cooling season ends, and a filter that’s gone unchecked since spring is often more clogged than homeowners expect.”Test your system on a mild day before you actually need it. Running the furnace for 15 to 20 minutes and listening for anything unusual gives you time to schedule a repair before the first real cold snap instead of during it. Make sure vents and registers throughout the house are clear of furniture, rugs, and curtains, since blocked airflow is one of the more preventable causes of uneven heating and short cycling. Check that your carbon monoxide detector has a working battery, and if you don’t have one near sleeping areas, it’s worth installing before winter.
Furnace Repair Service Areas
Clarke & Rush provides furnace repair throughout Sacramento and the surrounding region, including:
- Antelope
- Arcade
- Arden Arcade
- Auburn
- Carmichael
- Citrus Heights
- Conaway
- Davis
- East Sacramento
- El Dorado Hills
- El Macero
- Elk Grove
- Elverta
- Fair Oaks
- Florin
- Folsom
- Franklin
- Fremont
- Gold River
- Granite Bay
- Greenhaven
- Laguna
- La Riviera
- Lemon Hill
- Lincoln
- Loomis
- Rancho Cordova
- Rio Linda
- Riverview
- Rocklin
- Rosemont
- Roseville
- Sacramento
- Sheldon
- Vineyard
- West Sacramento
- Woodland
No matter where you are in these areas, our certified furnace repair technicians are a call away.
Why Sacramento Homeowners Choose Clarke & Rush for Furnace Repair
Since 1963, Clarke & Rush has repaired thousands of residential heating systems across the Sacramento area, and that history shapes how we approach every furnace call. We’re a Factory Authorized Dealer of Carrier and American Standard Platinum Dealer, our technicians are NATE certified, and with more than 2,000 five-star reviews across the Sacramento region, our reputation is built one repair at a time. When you call for furnace repair, you’re getting a company that’s been fixing heating systems in this climate for more than six decades, including the safety checks that matter most with gas appliances, not a technician working from a generic checklist.
What Our Customers Say
“Have used Clark and Rush for many years. Have always had a good experience. Most recent was replacing part for my furnace. Ronnie did an excellent job getting me heat again.” — L. McAuliffe
“We had our furnace checked prior to using this winter. C&R called prior to his arrival to let us know he was on the way. Clark and Rush sent a very professional technician who arrived on time. The technician inspected and tested our furnace for proper operation, he also inspected our air ducts for any leaks or damage. When he was done he cleaned up after himself and explained what he did and the results of his testing.” — Dan K.
“Clarke & Rush technician Douglas Smith was very thorough and highly skilled and did an excellent job of inspecting and servicing our furnace for the upcoming winter. We appreciate the great service.” — Carol H.
Frequently Asked Questions About Furnace Repair in Sacramento
How much does furnace repair cost in Sacramento?
Cost depends on the failed component, whether the part is on the truck or needs to be ordered, system age, and how complex the diagnosis is. A flame sensor or ignitor repair is typically inexpensive, while a blower motor or gas valve replacement costs more. We provide a firm price before any work begins.
How quickly can you repair a furnace?
Many furnace repairs are completed the same day, during the first visit, since our trucks carry the parts needed for the most common issues. Repairs requiring a specialty part for an older or less common system can take longer while we source it, and we’ll tell you that timeline upfront.
Why is my furnace running but not producing heat?
The most common causes are a failing flame sensor, an ignition problem, a dirty burner, a clogged air filter, or an interrupted gas supply. A full diagnostic is the only reliable way to know which one you’re dealing with, since several of these look identical from a homeowner’s perspective.
Is it dangerous to run a furnace with a cracked heat exchanger?
Yes. A cracked heat exchanger can allow carbon monoxide to enter your home’s air supply, and because it’s colorless and odorless, you may not notice until it’s a serious health risk. If a technician identifies a cracked heat exchanger, we’ll recommend shutting the system down immediately and walk you through repair versus replacement options.
Should I repair a furnace that’s 15 years or older?
It depends on the condition of the system, the cost of the needed repair, and how efficiently it’s currently running. If repairs are becoming frequent or the heat exchanger is compromised, replacement usually provides better long-term value than continuing to repair an aging system.
Can a dirty filter cause furnace problems?
Yes. A clogged air filter restricts airflow, which can cause the system to overheat, short cycle, or shut down entirely as a safety measure. It’s one of the simplest things to check yourself before calling for service.
Does Clarke & Rush offer financing for furnace repair?
Yes. We offer Synchrony financing on repair and service work, including a 0% interest option for 6 months on purchases of $1,000 or more, plus longer fixed payment terms for bigger jobs. These offers are as of 2026. Please ask about current options when you schedule.
What’s included in the HVAC Maintenance program, the Energy Saving Plan?
ESP membership includes a twice yearly AC and heating tune-up, 10% off repairs, priority scheduling, and a one year extended warranty on specific repairs with no diagnostic fee. Plans start at $199 a year for one system.
Do you offer furnace repair on weekends?
Yes. We provide 24/7 furnace repair, including weekends, holidays, and overnight, since a heating failure doesn’t wait for business hours.
How long do furnaces typically last?
Most gas furnaces last 15 to 20 years with regular maintenance, though that range depends heavily on how consistently the system has been serviced and how it was sized and installed originally. A furnace nearing the end of that range that starts needing frequent repairs is usually a better candidate for replacement than continued repair, especially once the heat exchanger is involved.
What’s the difference between a furnace tune-up and a furnace repair?
A tune-up is preventive: a technician inspects and cleans the system before anything has failed, ideally once a year in the fall. A repair addresses something that’s already gone wrong. Regular tune-ups significantly reduce how often you’ll need an actual repair, and they’re less expensive than an emergency call.
Schedule Furnace Repair in Sacramento, Day or Night
Call us at (916) 609-2656 any time to schedule furnace repair in Sacramento, or to get a straight answer on what’s wrong with your system, and whether it’s safe to keep running, before you decide what to do about it.
Furnace Repair Sacramento
Professional furnace repair services in Sacramento, CA. Clarke & Rush provides fast, reliable furnace diagnostics, repairs, maintenance, and emergency heating services to restore comfort and improve energy efficiency. Serving Sacramento and surrounding communities since 1963.
Service Type: Furnace Repair
Price: 105
Currency: USD
How much does furnace repair cost in Sacramento?
Repair costs vary depending on the failed component, system age, and labor required. A professional diagnosis is the best way to determine the exact repair cost.
How quickly can you repair a furnace?
Many common furnace repairs can be completed during the initial service visit once the issue has been diagnosed.
Why is my furnace running but not heating?
Common causes include ignition failures, dirty burners, clogged filters, thermostat issues, and airflow restrictions.
Should I repair a 15-year-old furnace or older?
It depends on the condition of the system, repair cost, and efficiency. If repairs are becoming frequent, replacement may provide better long-term value.
Can a dirty filter cause furnace problems?
Yes. Dirty air filters can restrict airflow, reduce efficiency, cause overheating, and contribute to system failures.
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