Furnace Repair Los Angeles: $300 to $900 + SoCalGas Help

Los Angeles rows are local figures; national rows are labeled.

Do this now: furnace out in Los Angeles

1. Smell gas or hear a CO alarm: get everyone out and call 911 or SoCalGas from outside. CPSC says not to search for the source.
2. Check that the thermostat is on heat and above room temperature, and that the fan is on AUTO (Carrier).
3. If the pilot light is out, Carrier says relighting it is a homeowner task, but repairs are for a professional. Follow the instructions on the furnace label, and stop if you smell gas.
4. Replace a dirty filter; a clogged one can trip the high-limit switch, Bryant says.
5. Stay warm safely: the CDC says never use the stove or oven for heat, and keep space heaters 3 feet from bedding, drapes and furniture.

Is it urgent? In LA the risk is carbon monoxide, not frozen pipes

Freezing is rare in central Los Angeles: NOAA's 1991 to 2020 normals for the downtown USC campus station show 0.0 nights a year at or below 32 F and 1,005.1 heating degree days, fewer than its 1,295.7 cooling degree days. A furnace failure here is usually a comfort problem. It becomes urgent when there is a gas smell, a CO alarm, soot around the furnace, or a pilot that will not stay lit. Carrier says to turn the system off and call a professional if you see soot or smell gas. If a pipe does freeze somewhere colder, see frozen pipes.

CPSC counts more than 200 deaths a year from carbon monoxide from non-vehicle consumer products and asks for a professional inspection of fuel-burning heating systems every year. HomeGuide says most technicians replace a cracked heat exchanger rather than repair it because of the CO risk. If an alarm sounds, read carbon monoxide alarm going off; for cool air at the vents, see furnace blowing cold air.

Old LA houses, old furnaces

Los Angeles's median home was built in 1965, the Census Bureau's 2020 to 2024 survey shows, and the city's planning department counts 19.7% of homes built in 1939 or earlier (ACS 2017 to 2021). HomeAdvisor puts furnace life at 15 to 30 years and suggests shopping for a new one when a repair costs more than half the price. See how long a furnace lasts and furnace replacement cost.

LADBS express permit and HERS testing for a new furnace

Replacing a gas furnace under 500,000 Btu/h is an LADBS Express Permit, with no plan check. The California Energy Commission says properly permitted HVAC work triggers any required HERS testing, that HERS documentation is needed to close the permit, and that a homeowner can ask to see the HERS forms. An owner-builder mechanical permit requires the owner to have lived in the home at least 12 months before the work is finished, to do the work before any sale, and to take owner-builder permits for no more than two structures in any three years, LADBS says.

SoCalGas help: free repair for qualified owners and a furnace rebate

• Energy Savings Assistance (ESA): no-cost upgrades for income-qualified customers. High-efficiency furnace replacement is for owner-occupied homes, and furnace repair or replacement may be available when the unit is inoperable or hazardous. Income limits from June 1, 2026 to May 31, 2027 start at $39,900 for one person and $82,500 for four, or enrollment in programs such as Medi-Cal, CalFresh or LIHEAP. Call 1-800-331-7593.
• Furnace rebate: $1.40 to $25 per kBTUh for an ENERGY STAR furnace at 92% AFUE or better, installed by a licensed contractor with proof of permit closure, one per household, through Dec 31, 2026 or until funds run out.

Local heating rules, programs and climate for Los Angeles, from official city, county, state, utility, Census and NOAA pages.

Questions to ask a Los Angeles furnace company

1. What is your CSLB license number, and is it a C-20?
2. If the furnace is replaced, will you pull the LADBS permit and arrange the HERS test?
3. What is the diagnostic fee? ConsumerAffairs lists $90 to $165 in Los Angeles.
4. Will you give me the permit closure paperwork I need for the SoCalGas rebate?
5. Can I see proof of insurance and a written price before work starts?

CSLB takes complaints against licensed and unlicensed contractors for up to four years from the act.

More Los Angeles heating guides

Heating and AC together: HVAC repair in Los Angeles. Gas lines and leaks: plumber in Los Angeles. Other mild-winter cities: furnace repair in Seattle and furnace repair in Nashville. National prices: furnace repair. Calls go to an independent company that serves your area and takes this kind of job (how calls work).