How Much Does Furnace Replacement Cost in Wilton? (2026 Guide)
Replacing a heating system in Wilton is rarely a simple “box swap.” The final price depends on fuel type, equipment efficiency, electrical capacity, and whether you are keeping the same kind of system or using the project as a chance to move away from oil. The good news is that you can usually narrow the budget pretty quickly once you understand the major decision points.
Below is a realistic 2026 look at what homeowners should expect for furnace replacement and adjacent heating upgrade options in this market.
2026 heating replacement cost ranges in Wilton
Here are common installed price ranges for Wilton-area projects:
| System type | Typical project | Installed price |
|---|---|---|
| 80%–96% gas furnace | Direct replacement with existing ductwork | $7,500 – $12,500 |
| Cold-climate heat pump | Whole-home ducted replacement | $12,000 – $22,000 |
| Dual-fuel hybrid system | Heat pump + backup furnace | $14,000 – $24,000 |
| Oil-to-gas or oil-to-heat-pump conversion | Conversion project | $15,000 – $30,000+ |
These are realistic installed ranges for the Wilton market. Your exact price depends on the home, the system design, and the scope of supporting work.
What affects the final price most
- Fuel type: Staying with a straightforward furnace replacement costs less than changing fuels or electrifying the home.
- Equipment efficiency: Higher-efficiency systems cost more upfront but can lower annual operating costs, especially over a long heating season.
- Ductwork or distribution condition: Older ducts, airflow issues, or zoning problems can add to the project but often make the biggest comfort difference.
- Electrical and venting upgrades: Heat pumps and conversion work often trigger panel upgrades, new line sets, condensate planning, or venting changes.
Furnace vs. boiler vs. heat pump: what are you really comparing?
Some homeowners begin by pricing a furnace when the real comparison should include a boiler upgrade or a cold-climate heat pump. If your home already heats through radiators or baseboards, a furnace may not even be the right replacement path. And if you want both heating and summer cooling from one system, a heat pump deserves a serious look.
Why proper sizing matters in Connecticut
Heating equipment should be sized using real load calculations, not shortcuts. Oversized equipment short-cycles, runs less efficiently, and often creates temperature swings. Undersized equipment struggles during design-temperature weather. This is especially important in older homes where insulation levels, windows, and room layouts vary more than people expect.
Don’t forget rebates and operating cost
Installed price is only part of the decision. Some higher-efficiency systems may qualify for rebates through programs like Energize CT, and your future fuel and electric bills matter too. We usually recommend comparing first cost, expected operating cost, and long-term comfort together.
Get a quote built around your home
The only way to know your real replacement cost is a proper in-home assessment. That gives you the chance to compare a furnace replacement, a heat pump, or a conversion project with real numbers instead of guesses.
Wilton HVAC provides free estimates with honest recommendations for Wilton homeowners considering new heating equipment.
Call (203) 762-5310