A1 HVAC servicesHow much does an HVAC contractor charge for a furnace replacement in Los Angeles? — Pricing Guide
A furnace replacement in Los Angeles usually costs about $4,500 to $9,000 installed, done for you start to finish. LA Comfort Pros removes the old unit, sets the new one, and pulls the permit — with the honest price confirmed before work begins across neighborhoods like Silver Lake and Sherman Oaks.
| Furnace type / home size | Typical installed price range |
|---|---|
| 80% AFUE gas furnace, small home (under 1,200 sq ft) | $4,500 - $6,000 |
| 80% AFUE gas furnace, mid-size home (1,200-2,000 sq ft) | $5,500 - $7,000 |
| 96% AFUE high-efficiency condensing furnace | $7,000 - $9,000 |
| Replacement with new gas line or duct modifications | Add $800 - $2,500 |
| Los Angeles building permit and inspection | Typically $250 - $600 |
| Minimum service charge | $150 |
Furnace replacement cost ranges in Los Angeles by type and home size
Furnace replacement cost is driven by furnace size and efficiency rating
The single biggest cost factor is furnace size, measured in BTUs, and efficiency, measured in AFUE. An 80% AFUE gas furnace vents through a standard flue and costs less to install. A 96% AFUE condensing furnace requires PVC venting and a condensate drain, which raises the installed price. A 1,500 sq ft Los Angeles home usually needs a 60,000 to 80,000 BTU furnace. Oversizing a furnace short-cycles the unit and wastes gas. A correct load calculation sizes the furnace to the home.
A furnace replacement quote should list ductwork, gas line, and permit as separate lines
A fair furnace replacement price separates equipment from labor and site work. Old or leaking ductwork can add $800 to $2,500. A furnace that has moved position or upgraded in size may need a resized gas line. Los Angeles requires a mechanical permit for furnace replacement, typically $250 to $600, with a follow-up inspection. A written quote that shows these lines lets a homeowner see exactly what the money buys. Hidden 'all-in' numbers with no breakdown are where surprise fees hide.
A furnace replacement in Los Angeles takes most crews one day
A standard furnace swap in an accessible closet, attic, or garage takes a two-person crew roughly six to eight hours. The crew shuts off gas and power, removes the old furnace, sets the new unit, connects gas, flue, and electrical, then tests ignition and airflow. Homes with attic or crawlspace furnaces and tight access take longer. Same-day dispatch is available when a furnace fails during a cold snap. The house stays livable through the day because the work is contained to the furnace location.
Repair versus replace comes down to furnace age and the cost of the fix
A furnace older than 15 years with a failed heat exchanger or a repair bill above roughly half the replacement cost is usually cheaper to replace. Most gas furnaces last 15 to 20 years in Los Angeles's mild climate, where heating hours are limited. A cracked heat exchanger is a safety issue and warrants replacement. A repair under $500 on a furnace under 12 years old often makes sense. A technician confirms the call after inspecting the unit on site.
Los Angeles specifics
Los Angeles's mild winters mean furnaces here run fewer hours than in cold-climate cities, so units often last toward the top of the 15-to-20-year range. Furnace replacement requires a mechanical permit from LADBS, typically $250 to $600, plus a final inspection. Hillside homes in Silver Lake, Los Feliz, and Highland Park often house furnaces in tight attic or closet spaces that raise labor time. Older bungalows in West Adams and Boyle Heights sometimes need gas line or venting upgrades to meet current code. Valley homes in Sherman Oaks and Woodland Hills frequently pair furnace work with AC because of heavier summer cooling loads. SoCalGas rebates can offset the cost of high-efficiency 95%+ AFUE furnaces when available.
Related questions
How much does a furnace tune-up cost in Los Angeles?
A furnace tune-up in Los Angeles typically costs about $90 to $180, covering ignition, burner, and airflow checks. The minimum service charge is $150.
How long does a gas furnace last in Los Angeles?
Most gas furnaces last 15 to 20 years in Los Angeles, and often toward the higher end because mild winters mean fewer running hours.
Do I need a permit to replace a furnace in Los Angeles?
Yes. Los Angeles requires a mechanical permit and inspection for furnace replacement, typically $250 to $600, which a licensed contractor pulls for you.
Is it cheaper to repair or replace a furnace?
A repair costing more than about half the replacement price on a furnace over 15 years old usually favors replacement.
What size furnace do I need for my Los Angeles home?
A 1,500 sq ft Los Angeles home typically needs a 60,000 to 80,000 BTU furnace, sized by a load calculation, not by guesswork.