Furnace installation in San Bernardino, CA
Inland Empire winters are mild, so a furnace here works only a few months, and many homes also have ducts that were never sized for a modern system. A new gas furnace in San Bernardino typically costs about $4,100 to $5,900 installed for common 60,000 to 100,000 BTU sizes.
We size it for your home, check the ducts, handle the permit and explain the air district rules so you can choose with the facts. Emergency service is available 24/7.
The price in plain numbers
Average installed prices in San Bernardino from our pricing guide are about $4,100 for a 60,000 BTU furnace, $4,900 for 80,000 BTU and $5,900 for 100,000 BTU. See the furnace installation pricing guide.
| Furnace size | Typical home size | Average installed |
|---|---|---|
| 60,000 BTU | Smaller homes | $4,100 |
| 80,000 BTU | Most single story homes | $4,900 |
| 100,000 BTU | Larger and two story homes | $5,900 |
Examples of our work
Signs it is time for a new furnace
- The furnace is 15 or more years old.
- A technician found a cracked heat exchanger, which makes the furnace unsafe to run.
- Burners or the ignition keep failing, or the pilot and gas lines show wear.
- Heating bills are rising or some rooms stay cold.
- Your air conditioner is old too, and you would like to replace both together.
The gas furnace rule, in plain words
San Bernardino is inside the South Coast Air Quality Management District. In June 2025 its board voted 7 to 5 not to approve proposed rules that would have phased out gas furnaces and water heaters, so the earlier Rule 1111 remains in effect.
The proposals went back to committee, so check the district's page for updates. Nothing today requires you to replace a gas furnace with a heat pump.
Ducts decide the result
Many older San Bernardino homes have ducts that are undersized for modern equipment or that leak into the attic. A new furnace connected to those ducts delivers less comfort than it should and can run hotter and shorter.
We check the ducts during the estimate and tell you if sealing, a larger return or a duct change would help. California's Title 24 standards can also require duct testing when a system is replaced.
Choosing an efficiency level
| AFUE rating | Tier | Added to base price |
|---|---|---|
| 80 percent | Standard efficiency | Base price |
| 90 to 92 percent | Mid efficiency condensing | Add $400 to $900 |
| 95 to 96 percent | High efficiency | Add $900 to $1,800 |
| 97 to 98 percent or more | Premium modulating | Add $2,200 to $4,000 |
With a short heating season, the highest efficiency tiers pay back slowly here. A mid efficiency condensing furnace is often the best value.
What a good installation includes
- A load calculation that sizes the furnace to your home.
- Venting that matches the furnace type.
- A gas line and pilot line inspection and pressure test.
- Return air and duct connections checked.
- Carbon monoxide detectors tested. See the CPSC guide.
- The permit and a final combustion check.
Furnace or heat pump?
A heat pump heats and cools from one system and can replace both an old furnace and an old air conditioner. See heat pump installation in San Bernardino. We give you the numbers for each.
How an installation works
- A walk through. We see the space, the ducts and the electrical panel.
- A written plan. Size, model, efficiency and price, with no work started yet.
- Permit and scheduling. We handle the paperwork and tell you what to expect on the day.
- Installation. Equipment, lines, electrical and drain, then startup checks.
- Handoff. We show you the thermostat, the filter and what to watch for.
What moves the price of a San Bernardino furnace job
- Replacing undersized or leaking ducts, or sealing them.
- Standard or condensing equipment.
- Venting and gas line work.
- Attic or garage installation requirements.
- A new thermostat.
We spell these out so there are no surprises.
Questions worth asking any San Bernardino contractor
- How did you size the furnace?
- Will you test the ducts and tell me what they need?
- Is the permit included?
- Do I have to switch to a heat pump? (No, not today.)
- What does the warranty cover?
Where we serve
We serve San Bernardino, Rialto, Fontana, Colton, Highland, Redlands, Loma Linda and Ontario. See furnace repair in San Bernardino, AC installation in San Bernardino and HVAC in San Bernardino.
Brands we service
We repair and install all major brands. Each brand page lists the models we install, the problems we see most and what the warranty typically covers. See how we match a technician to your brand.
San Bernardino, CA on the map
Common questions
How much does a new furnace cost in San Bernardino, CA?
Average installed prices in our guide are about $4,100 for 60,000 BTU, $4,900 for 80,000 BTU and $5,900 for 100,000 BTU.
Do I have to replace my gas furnace with a heat pump?
No. In June 2025 the South Coast air district voted not to approve a gas furnace phase out. Nothing requires it today.
Can my old ducts handle a new furnace?
Sometimes. We test them and tell you what would help.
Do you install furnaces in Rialto and Fontana?
Yes.
Do I need a permit?
In most cases yes. We handle it.
Talk to a person
Call any hour for emergency service, or reach us during business hours for a visit or a quote.