How much does furnace replacement cost?
Replacing a gas furnace typically falls in a representative installed range of about $4,000–$10,000, with high-efficiency (95%+ AFUE) and larger or harder-to-access units toward the upper end. Your real price depends on the furnace's size, efficiency, and install complexity — an on-site estimate is the only way to know for sure.
These are representative ranges to help you plan — not a quote. Your actual price depends on your home, equipment, and scope, and can fall outside these ranges. The only way to know your real cost is a free on-site estimate.
Typical furnace replacement ranges
Representative installed ranges to help you plan. Your estimate depends on your home — the factors below explain what moves it.
Sized to your home; straightforward like-for-like replacement.
Better fuel efficiency; may require new venting.
What affects your furnace replacement price
Efficiency (AFUE)
High-efficiency 95%+ AFUE furnaces cost more upfront and use less fuel. They often require different (PVC) venting, which can add labor on a conversion.
Size & capacity
The furnace's heating output (BTUs) is matched to your home's load. Bigger isn't better — an oversized furnace short-cycles and wastes fuel.
Venting & gas line
Switching efficiency levels can change venting requirements; older gas lines or flues may need updates to meet code.
Access & removal
Attic or tight-closet installs and disposal of the old unit affect labor.
What's typically included
- Properly sized furnace matched to your home
- Installation, venting connections, and gas hookup to code
- Removal and disposal of the old furnace
- Permits and inspection
- Startup, safety check, and walkthrough
Often quoted separately
- Ductwork repair/replacement or AC/coil work (quoted separately if needed)
- Electrical or thermostat upgrades beyond standard
Spread the cost over time
Qualified homeowners can finance this project through our lending partner — including 0% interest plans (typically 6–18 months) and low-interest extended terms up to 60 months. Approval, rate, and term depend on credit and the lender; we'll walk you through the options on your estimate.
View financing options →Frequently asked questions
How much does a new furnace cost installed?
A representative installed range is about $4,000–$10,000, depending on efficiency, size, and venting. High-efficiency units are toward the upper end. Your exact price requires an on-site estimate.
Should I consider a heat pump instead of a furnace?
Many Central Coast homeowners do, because a heat pump heats and cools with one efficient system and may qualify for incentives. See our heat pump vs. furnace comparison to weigh it for your home.
Before you decide
Honest guides to help you choose well — not just what it costs, but whether it's the right call for your home.
Get your free furnace replacement estimate
No pressure, no surprises — a clear, upfront price for your home before any work begins. Already have a quote? Get a free 2nd opinion.