Bay Area · Licensed & Insured
Gas Furnace Installation in the Bay Area
Bay Area winters are mild but the peninsula's marine layer and inland fog keep mornings cold most of the year. A properly sized gas furnace delivers fast, even heat without the energy penalty of an oversized unit short-c…
Why us
Licensed CA Contractor
NATE-Certified Technicians
Permit coordination included
In-home assessment
Pricing review due November 1, 2026
About This Service
Bay Area winters are mild but the peninsula's marine layer and inland fog keep mornings cold most of the year. A properly sized gas furnace delivers fast, even heat without the energy penalty of an oversized unit short-cycling all day. We install single-stage, two-stage, and modulating furnaces from leading brands and match the efficiency tier to your home's insulation level so you don't pay for AFUE you can't use.
Gas Furnace Installation Cost in the Bay Area
Pricing review due November 1, 2026
Planning ranges reflect typical equipment, labor, and permit coordination. They are not a final quote; site conditions can change the final scope.
- 80% AFUE furnace (1,000–1,600 sq ft)
- $5,500–$8,000
- 96% AFUE furnace (1,600–2,400 sq ft)
- $7,500–$11,000
- 98% AFUE modulating furnace (2,400+ sq ft)
- $10,500–$14,500
- Add: flue liner or PVC venting upgrade
- $400–$1,200
Planning ranges reflect typical equipment, labor, and permit coordination. They are not a final quote; site conditions can change the final scope.
What's Included
How It Works
Heat-Load Calculation
We calculate your home's heat loss to select a furnace that heats efficiently — undersized units can't keep up; oversized units cycle inefficiently.
Venting Inspection
High-efficiency furnaces require PVC venting, not the metal flue your old furnace used. We inspect and quote any changes before ordering equipment.
Permit Coordination
Every furnace installation in California requires a permit. We coordinate with your city's building department and schedule the inspection.
Installation & Test
We install, commission, and test the furnace on installation day — verifying gas pressure, heat rise, and static pressure before sign-off.
Gas Furnace Installation FAQ
Should I choose 80% or 96% AFUE?
In Bay Area homes with existing metal flue venting, 80% AFUE avoids a costly PVC vent retrofit. In homes with good attic or crawlspace access for PVC runs, 96%+ pays back faster given California gas rates.
How long does furnace installation take?
Most replacements finish in 4–6 hours. Homes that need new venting or gas line modifications may require a full day.
What brands do you install?
We install Carrier, Lennox, American Standard, and Trane. Brand matters less than proper sizing, installation quality, and available local support — we handle all three.
My furnace is 15 years old but still works — should I replace it?
If your heat exchanger is cracked or your efficiency rating is below 80% AFUE, replacement typically makes financial sense. We'll run the numbers honestly — we don't push unnecessary replacements.
Do Bay Area furnaces need a special permit?
Yes. California requires a permit for furnace replacement, and high-efficiency installs must meet Title 24 duct leakage standards. We handle the permit and pass-on inspection.
Cities We Serve
Furnace Installation installation is available throughout the Bay Area. Find your city for local pricing, permitting, and project details.
Contra Costa County
Alameda County
Santa Clara County
San Mateo County
San Francisco County
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