The short answer
A gas furnace replacement in Vancouver WA costs $6,400 to $13,300 installed in 2026, including equipment, labor, permit and commissioning. Home size and the efficiency you pick move you up or down that range.
In this guide
Furnace replacement cost and the three tiers.
A gas furnace replacement runs $6,400 to $13,300 installed in Clark County, and our online estimator shows a range for your home. A 30-minute in-home measurement sets the final price.
The three tiers in plain terms:
- Standard (80% AFUE): single-stage heat, the lowest upfront cost. American Standard Silver 80. It turns 80% of the gas you buy into heat and sends the rest up the flue.
- High Efficiency (95%+ AFUE): two-stage heat, wastes far less gas than an 80% unit. This is the tier we install most and the one we recommend for most homes staying on gas.
- Premium (variable-speed modulating): modulating heat, the most even comfort of the three. American Standard Platinum 95. It adjusts output continuously instead of cycling on and off.
Not sure the furnace needs replacing? Start with our repair vs replace breakdown, or read the heat pump vs furnace comparison if you are weighing gas against electric.
What drives furnace replacement cost up or down.
Beyond home size and efficiency tier, venting, gas line work and filtration add-ons are what push a furnace replacement quote toward the top of its range.
1. Venting.
An 80% furnace vents hot exhaust through a metal flue. A 95%+ furnace runs cool enough to vent through PVC pipe, usually out a side wall, and it produces condensate that has to be drained properly. Moving from an 80% unit to a 95%+ unit changes the vent path, and if the old metal flue also serves a water heater, that flue sometimes needs rework too. A simple changeout with a clean vent path sits at the bottom of the range. New venting runs, long horizontal runs, or flue rework push a quote toward the top.
2. Gas line work.
A new sediment trap and a regulator as needed are routine and included on every install. Gas line work adds cost when the line itself needs attention: rerouting to a new furnace location, upsizing an undersized line, or replacing corroded pipe. We pressure-test and check for gas leaks before we leave on every job; that is commissioning, not an add-on.
3. Filtration add-ons.
A furnace changeout is the cheapest moment to upgrade filtration, because the return side is already open. A media filter cabinet or a deeper filter rack takes a much thicker filter that lasts longer and catches more than the standard 1-inch throwaway. Both are optional, priced as their own line items on the quote, and easy to say no to. For the filter schedule afterward, see how often to change a furnace filter.
4. Size and sizing.
Bigger homes need more BTU, and a bigger furnace costs more. But the right size comes from a Manual J load calculation, not square footage alone. Oversized furnaces short-cycle, heat unevenly, and wear out faster. We run the load calculation on every quote.
Paying for it.
Monthly payments are available on approved credit. See the financing page for how it works, or ask for the payment option on your quote.
What the installed price includes.
Every installed price in this guide covers the complete job:
- The furnace itself, sized from a Manual J load calculation, not a guess.
- Code-compliant venting, including condensate handling on high-efficiency units.
- The gas connection, with a new sediment trap and regulator as needed.
- Electrical hookup.
- The permit, pulled and inspected, with our license number on the quote.
- Commissioning and safety checks, including a combustion and gas-leak test before we leave.
A standard furnace changeout is usually done in a single day; jobs with new venting or gas-line work can take longer, and we confirm the timeline in the written quote. For the play-by-play, read what to expect during an HVAC changeout.
Questions homeowners ask.
How much does a furnace replacement cost in Vancouver, WA?
A gas furnace replacement in Vancouver WA runs $6,400 to $13,300 installed in 2026, including equipment, labor, permits, and commissioning. Home size, the efficiency tier you pick, and the venting and gas work your house needs decide where you land. Prices reviewed August 2026.
What drives a furnace replacement price up or down?
Beyond home size and efficiency tier, the three most common variables are venting (a 95%+ AFUE furnace vents through PVC and needs condensate handling, and old metal flues sometimes need rework), gas line work (a new sediment trap and regulator are routine, but rerouting or upsizing the line adds labor and materials), and filtration add-ons like a media filter cabinet or a deeper filter rack, which are optional and priced as separate line items on the quote.
Does the installed price include permits and commissioning?
Yes. The range in this guide is a turnkey installed price: the furnace itself, labor, code-compliant venting, the gas connection, the permit, and full commissioning with a combustion and gas-leak test before the crew leaves. Monthly payments are available on approved credit, and a free 30-minute in-home measurement turns a range into a firm written quote.
The bottom line for Vancouver homeowners.
A gas furnace replacement in Clark County runs $6,400 to $13,300 installed. The high-efficiency 95%+ AFUE furnace is the tier we install most. If a quote lands far outside that range in either direction, ask why before signing.
Want a real number for your specific home? Request a free in-home quote: we measure the house, check the venting, gas and electrical, and build the complete itemized estimate before we leave.
Sources and resources
Reviewed for accuracy by Sam Tsarenko, founder of Pacific Peak Mechanical. The price range reflects typical installed costs calibrated against recent customer quotes, last reviewed August 2026. This guide draws on the following primary sources:
- ENERGY STAR, Furnaces
- American Standard, AFUE glossary, for what an AFUE rating means: the share of fuel that becomes heat, with the rest escaping as exhaust
- Carrier, Furnace Short Cycling, for an oversized furnace short-cycling, heating unevenly and wearing faster
Related from Pacific Peak: Furnace installation in Vancouver WA · When to repair vs replace your furnace
