### Gas Furnace Repair Throughout Greater Los Angeles
Most homes in Los Angeles heat with natural gas furnaces. When a furnace fails on a cold January night, LC Heating & Air provides same-day diagnosis and repair throughout LA County. We carry the most common furnace repair parts on every service truck β ignitors, flame sensors, pressure switches, gas valves, control boards, and blower capacitors β and complete most repairs in a single visit.
Overview
### The Most Common Gas Furnace Failures
Gas furnaces fail in predictable ways. The most frequent call we receive is a furnace that won't ignite β almost always a failed hot surface ignitor ($150β$250 repair) or a dirty flame sensor. The second most common is a furnace that runs briefly and then shuts off β typically a failing pressure switch, a restricted flue, or an overheating condition triggering the high-limit switch. The third is a blower that runs but produces no heat β usually a gas valve or inducer motor issue.
### Safety First on Every Gas Furnace Call
Every gas furnace service call begins with a safety check. We verify the flue is clear and draft is adequate, test the heat exchanger for cracks using CO measurement, confirm the rollout switch is functioning, and check gas pressure at the manifold. We won't leave a system running that has a safety concern β but we also won't use safety concerns as a pretext for unnecessary equipment sales.
### All Brands Serviced Throughout Los Angeles
We repair Carrier, Lennox, Trane, Rheem, Goodman, Bryant, York, American Standard, and all other residential gas furnace brands β both 80% AFUE and 96%+ AFUE two-stage and variable-speed models. Call (323) 970-3113 for same-day service.
Our Service Benefits
Same-day service
We stock ignitors, flame sensors, pressure switches, and control boards for all major brands. Most gas furnace repairs are completed same-day.
Safety check included
Every service call includes CO measurement and heat exchanger inspection. We don't leave a system running that has a safety concern.
Written estimate first
You know the price before we do any repair work. We explain exactly what failed and why before you authorize anything.
All brands serviced
Carrier, Lennox, Trane, Rheem, Goodman, Bryant, York β we repair all residential gas furnace brands and models.
Gas Furnace Repair Cost in Los Angeles
Pricing ranges for common gas furnace repair services. Your actual cost depends on equipment, complexity, and home configuration. We provide an exact written estimate before any work begins.
Gas furnace diagnostic
Includes CO safety check
$125β$175
Ignitor/flame sensor repair
$150β$300
Gas valve replacement
$350β$600
Heat exchanger inspection
Included with service call
Service calls start at $125. Prices include parts and labor unless noted. Financing available on equipment installations. Learn about financing β
What Los Angeles Homeowners Say
βSwitched from gas furnace to a heat pump. LC handled the TECH Clean California paperwork β got $2,500 rebate plus federal credit.β
M
Michael D.Eagle Rock, CA
βLC replaced our entire HVAC system. Leo walked us through every option without pressure. The install team was professional and clean.β
D
David K.Pasadena, CA
βLC found that our ductwork had separated in the attic. Repaired everything and now every room heats equally. Professional and transparent.β
S
Sarah T.Studio City, CA
Brands We Service & Install for Gas Furnace Repair
We verify flue draft, test for CO, and inspect the heat exchanger before diagnosing the mechanical fault.
02
Fault diagnosis
We trace the fault: ignitor, flame sensor, pressure switch, gas valve, control board, and blower components.
03
Written estimate
We explain the fault in plain language and provide a flat repair price. You approve; we repair.
04
Repair and test
We complete the repair and run the system through multiple heat cycles to confirm proper operation before leaving.
Customer Reviews
300+ verified reviews
5.0
Google Reviews196 reviews on Google
SM
Sharon Meoded
Los Angeles, CA
βLior and his team installed an AC unit in my room that doesnβt have central AC and it works amazing! They were so professional and cleaned up fully after themselves. He kept me in the loop the entire process and when he came out prior to installing showed me step by step what they would be doing! Highly recommend ! Super professionalβ
Google Review
PW
Patricia Williams
Los Angeles, CA
βLC Heating and Air is a reliable, affordable solution for all your central air and heating needs. I am an out of town landlord and it can be difficult to find the assistance I need. LC Heating and Air took care of my tenants issues quickly and explained all issues before making necessary repairs. I will def use them again if need be!β
Google Review
NE
Naomi Eagleson
Los Angeles, CA
βI hired LC Heating & AC to replace the drain pumps in our Mitsubishi Mini Splits and clean the condenser and was pleased with the service. Leo was responsive, thorough, and professional. I chose this company based on the glowing reviews I read online and wasn't disappointed. My husband and I look forward to using our AC this summer!β
Google Review
OI
Osher Itzhaki
Los Angeles, CA
βAmazing service!! I called LC heating and air and was fortunate enough to have scheduled them for a same day appointment . Leo arrived on time and was super friendly, polite and fixed my ax in no time . The price was fair and he explained what further steps I shouted take to keep my ac unit running for more years Thank you LC!!!β
Google Review
JS
Justin Shapiro
West Hollywood, CA
βGreat experience!!β Leo came to my house in West Hollywood at 9pm !! I had an emergency, my ac stopped working out of no where i called LC heating and air from the phone call with the office to the time the tech came the service was just amazing. Leo came and had my ac running in no time. Thank you so much !! Highly recommendedβ
Google Review
GH
Greg Haroutunian
Los Angeles, CA
βSunday morning discovered AC in the unit is not working, called everywhere, no one wanted to come the same day. LC Heating came the same day, fixed the problem which apparently wasn't easy to figure out. Very professional, calm and confident, pleasant to work with. Leo was the lead guy. Great experience, highly recommend it!β
Google Review
AV
Adam Valdies
Los Angeles, CA
βLeo and his team were amazing! I am so glad we called them to handle our AC/Heating issue. The problem was not clear at first and required substantial troubleshooting but Leo was extremely communicative and very professional throughout! He figured out the problem and we cannot thank him enough! Highly recommend!β
Google Review
LO
Leeyam Ohayon
Los Angeles, CA
βI called LC Heating & Air when my heating unit stopped working. He came quickly and fixed the problem fast. The technician was very kind and experienced. He explained the problem to me and gave me maintenance tips for the future. I definitely recommend LC Heating and Air if you're in need of these services.β
Google Review
AY
ariel. yona.
Los Angeles, CA
βAmazingly service me heater broke down and I was looking for a local company in my neighborhood. I found LC heating and air I canβt express in words how pleased I was with this company the owner Leo came out was very professional friendly and fixed my heater in no time !!! Highly recommendedβ
Google Review
KB
kevin benoit
Los Angeles, CA
βI cannot recommend this company more. They came, assess my issue and then ordered the right parts from the company and made an amazing install and transform my AC unit into a smart controlled AC unit which no Other HVAC company was able to do, or wanted to take the time that it took to do itβ
Google Review
TY
Todd Yasuda
Los Angeles, CA
βAsher (LC Heating & Air) is the best, he kept me informed throughout the whole process. Everything he told me is exactly how things were done. I couldnβt have asked for a better person to work with. If you want to work with a reliable person and company, I would highly recommend him.β
Google Review
CK
claudia kleinschmidt
Los Angeles, CA
βOur AC was broken and had been dripping for a couple days. Once we called LC heating and air they sent out Asher to fix it immediately. He checked out the AC and fixed the problem on the spot. He was super professional and informative. Highly recommend Asher and the company!β
Google Review
DF
D Fan
Los Angeles, CA
βLeo is the absolute best! Had an emergency call and he came out right away in the early evening. Showed me how my units work and what the problem was. A few minutes later, it was fixed and working again! I cannot recommend this guy more highly. Call him and you'll be happy!β
Google Review
JM
Jamie Morgan
Los Angeles, CA
βLC Heating and AC is the best! I couldnβt recommend enough. It was a 100/10 experience. Helped me get to the bottom of repairing my AC that was very complicated and messed up by someone else. They are very professional and kind on top be being super knowledgeable.β
Google Review
DA
dan amiel
Los Angeles, CA
βGreat service my heater stopped working out of the blue and we just had a new born I called lc heating and air they were the only ones that answered they came out and a hour my heater was up and running I couldnβt thank them enough . Highly recommendedβ
Google Review
YG
Yane G.
Los Angeles, CA
βVery helpful and very respectful. I called for a repair and was answered immediately, they were great in explaining what was going wrong and how they would fix it i was glad with there work and would definitely be calling them for any future repairs.β
Google Review
LA
Leetal Adelle Cohen
Los Angeles, CA
βWe reached out to Leo and had a new HVAC system installed by him and his crew. Very happy with the results! Very professional, knowledgeable and patient. The whole process was very smooth, quick and clean. System works perfectly. Highly recommendβ
Google Review
AM
Agam Mashiah
Los Angeles, CA
βI called lc heating to fix my heater in my house . We decided to replace the heater throughout the whole out process the customer service was great they were very communicative, professional and were very clean . Thank you again for the great jobβ
Google Review
CR
Charles Raffini
Los Angeles, CA
βHVAC system was leaking in the attic. Leo took my call late at night and came immediately. He stopped the leak and came back to make sure the system was working properly. Very responsive, good work and great value. Highly recommend them.β
Google Review
YY
yoav yerushalmi
Los Angeles, CA
βScheduled an appointment very quickly for our HVAC unit that was having trouble cooling. Were very meticulous and clean. Helped idenitfy the issue and did a great job explaining what needs to be done and doing it. Highly recommended...β
Google Review
SM
Sharon Meoded
Los Angeles, CA
βLior and his team installed an AC unit in my room that doesnβt have central AC and it works amazing! They were so professional and cleaned up fully after themselves. He kept me in the loop the entire process and when he came out prior to installing showed me step by step what they would be doing! Highly recommend ! Super professionalβ
Google Review
PW
Patricia Williams
Los Angeles, CA
βLC Heating and Air is a reliable, affordable solution for all your central air and heating needs. I am an out of town landlord and it can be difficult to find the assistance I need. LC Heating and Air took care of my tenants issues quickly and explained all issues before making necessary repairs. I will def use them again if need be!β
Google Review
NE
Naomi Eagleson
Los Angeles, CA
βI hired LC Heating & AC to replace the drain pumps in our Mitsubishi Mini Splits and clean the condenser and was pleased with the service. Leo was responsive, thorough, and professional. I chose this company based on the glowing reviews I read online and wasn't disappointed. My husband and I look forward to using our AC this summer!β
Google Review
OI
Osher Itzhaki
Los Angeles, CA
βAmazing service!! I called LC heating and air and was fortunate enough to have scheduled them for a same day appointment . Leo arrived on time and was super friendly, polite and fixed my ax in no time . The price was fair and he explained what further steps I shouted take to keep my ac unit running for more years Thank you LC!!!β
Google Review
JS
Justin Shapiro
West Hollywood, CA
βGreat experience!!β Leo came to my house in West Hollywood at 9pm !! I had an emergency, my ac stopped working out of no where i called LC heating and air from the phone call with the office to the time the tech came the service was just amazing. Leo came and had my ac running in no time. Thank you so much !! Highly recommendedβ
Google Review
GH
Greg Haroutunian
Los Angeles, CA
βSunday morning discovered AC in the unit is not working, called everywhere, no one wanted to come the same day. LC Heating came the same day, fixed the problem which apparently wasn't easy to figure out. Very professional, calm and confident, pleasant to work with. Leo was the lead guy. Great experience, highly recommend it!β
Google Review
AV
Adam Valdies
Los Angeles, CA
βLeo and his team were amazing! I am so glad we called them to handle our AC/Heating issue. The problem was not clear at first and required substantial troubleshooting but Leo was extremely communicative and very professional throughout! He figured out the problem and we cannot thank him enough! Highly recommend!β
Google Review
LO
Leeyam Ohayon
Los Angeles, CA
βI called LC Heating & Air when my heating unit stopped working. He came quickly and fixed the problem fast. The technician was very kind and experienced. He explained the problem to me and gave me maintenance tips for the future. I definitely recommend LC Heating and Air if you're in need of these services.β
Google Review
AY
ariel. yona.
Los Angeles, CA
βAmazingly service me heater broke down and I was looking for a local company in my neighborhood. I found LC heating and air I canβt express in words how pleased I was with this company the owner Leo came out was very professional friendly and fixed my heater in no time !!! Highly recommendedβ
Google Review
KB
kevin benoit
Los Angeles, CA
βI cannot recommend this company more. They came, assess my issue and then ordered the right parts from the company and made an amazing install and transform my AC unit into a smart controlled AC unit which no Other HVAC company was able to do, or wanted to take the time that it took to do itβ
Google Review
TY
Todd Yasuda
Los Angeles, CA
βAsher (LC Heating & Air) is the best, he kept me informed throughout the whole process. Everything he told me is exactly how things were done. I couldnβt have asked for a better person to work with. If you want to work with a reliable person and company, I would highly recommend him.β
Google Review
CK
claudia kleinschmidt
Los Angeles, CA
βOur AC was broken and had been dripping for a couple days. Once we called LC heating and air they sent out Asher to fix it immediately. He checked out the AC and fixed the problem on the spot. He was super professional and informative. Highly recommend Asher and the company!β
Google Review
DF
D Fan
Los Angeles, CA
βLeo is the absolute best! Had an emergency call and he came out right away in the early evening. Showed me how my units work and what the problem was. A few minutes later, it was fixed and working again! I cannot recommend this guy more highly. Call him and you'll be happy!β
Google Review
JM
Jamie Morgan
Los Angeles, CA
βLC Heating and AC is the best! I couldnβt recommend enough. It was a 100/10 experience. Helped me get to the bottom of repairing my AC that was very complicated and messed up by someone else. They are very professional and kind on top be being super knowledgeable.β
Google Review
DA
dan amiel
Los Angeles, CA
βGreat service my heater stopped working out of the blue and we just had a new born I called lc heating and air they were the only ones that answered they came out and a hour my heater was up and running I couldnβt thank them enough . Highly recommendedβ
Google Review
YG
Yane G.
Los Angeles, CA
βVery helpful and very respectful. I called for a repair and was answered immediately, they were great in explaining what was going wrong and how they would fix it i was glad with there work and would definitely be calling them for any future repairs.β
Google Review
LA
Leetal Adelle Cohen
Los Angeles, CA
βWe reached out to Leo and had a new HVAC system installed by him and his crew. Very happy with the results! Very professional, knowledgeable and patient. The whole process was very smooth, quick and clean. System works perfectly. Highly recommendβ
Google Review
AM
Agam Mashiah
Los Angeles, CA
βI called lc heating to fix my heater in my house . We decided to replace the heater throughout the whole out process the customer service was great they were very communicative, professional and were very clean . Thank you again for the great jobβ
Google Review
CR
Charles Raffini
Los Angeles, CA
βHVAC system was leaking in the attic. Leo took my call late at night and came immediately. He stopped the leak and came back to make sure the system was working properly. Very responsive, good work and great value. Highly recommend them.β
Google Review
YY
yoav yerushalmi
Los Angeles, CA
βScheduled an appointment very quickly for our HVAC unit that was having trouble cooling. Were very meticulous and clean. Helped idenitfy the issue and did a great job explaining what needs to be done and doing it. Highly recommended...β
Common questions about gas furnace repair in Los Angeles
Why won't my gas furnace ignite?
The most common causes are a failed hot surface ignitor (the glowing element that lights the burners), a dirty or failed flame sensor (a safety device that verifies the burners lit), or a pressure switch failure. All of these are same-day repairs. Less commonly, a failed gas valve or control board is the cause. We diagnose accurately before recommending any part replacement.
My furnace starts then shuts off after a few minutes. What's wrong?
Short-cycling is usually caused by a pressure switch fault (often from a restricted condensate drain on high-efficiency units), an overheating condition triggering the high-limit switch (typically a dirty filter or blocked supply registers), or a cracked heat exchanger triggering the rollout switch. Each has a different repair β accurate diagnosis is essential.
Is it safe to run my furnace if it's making a loud noise?
It depends on the noise. Grinding or squealing from the blower motor typically means a bearing failure β run the system down before more damage occurs. A loud bang at startup can indicate delayed ignition β a safety concern worth investigating. A rumbling from the burner compartment should be evaluated before continued use. When in doubt, call us.
How much does gas furnace repair cost in Los Angeles?
Common repairs: ignitor replacement $150β$250; flame sensor cleaning or replacement $100β$175; pressure switch replacement $175β$300; control board replacement $350β$600; gas valve replacement $300β$500. We give you a written flat-rate price before any work begins.
My furnace smells like burning. Is that normal?
A brief dusty smell at the start of heating season is normal β dust burning off heat exchangers that sat idle all summer. A persistent burning smell, especially plastic or electrical, means shut the system off and call us. A sulfur or rotten egg smell near the furnace means possible gas leak β leave the building and call SoCalGas emergency line from outside, then call us.
What does a flame sensor do and why does it get dirty?
The flame sensor is a metal rod that sits in the burner flame and confirms to the control board that ignition occurred. If the board doesn't see a signal within a few seconds, it shuts the gas off as a safety measure. Over time, oxidation builds up on the sensor rod and weakens the signal, causing nuisance shutdowns. Cleaning the sensor usually resolves it for $100β$175.
How do I know if my furnace heat exchanger is cracked?
Symptoms of a cracked heat exchanger include: CO detector alarms when the furnace runs, headache or nausea when heat is on, soot deposits near supply registers, and rollout switch trips. We perform CO combustion analysis on every furnace service call β it's the most reliable way to detect heat exchanger compromise. A cracked heat exchanger is a safety issue requiring immediate attention.
Can you repair older furnaces?
Yes. We repair furnaces of all ages including 20+ year old units. The question is whether repair cost makes sense compared to replacement β we give you honest analysis. When parts availability on very old units makes repair impractical, we'll tell you clearly and discuss replacement options without pressure.
Verified Reviews
What customers say about gas furnace repair
Verified reviews from Los Angeles homeowners who used our gas furnace repair service.
βFurnace was making a loud banging noise every time it started. LC diagnosed delayed ignition from dirty burners. Cleaned and tuned the whole system, tested CO levels, explained everything clearly. No upsell, fair price.β
K
Kevin A.
Burbank, CA Β· Dec 2025
βCalled LC because our CO detector went off. Their technician found a crack in the heat exchanger and immediately shut down the furnace. He explained the safety issue clearly, provided a replacement estimate, and didn't try to scare us β just facts.β
P
Patricia N.
Pasadena, CA Β· Jan 2025
βPilot light kept going out on our older furnace. LC came out, replaced the thermocouple, cleaned the burner assembly, and did a full safety check. Fast, affordable, and they showed me how to relight it safely in the future.β