How Much Does an HVAC System Cost in the South Sound?
Most homeowners pay $9,000–$15,000 for a fully installed central AC or furnace, while a cold-climate heat pump typically runs $12,000–$20,000. Call (253) 740-5135 for Infinity's exact written quote.
Answer first
Most Puget Sound homeowners pay between $9,000 and $15,000 for a fully installed central AC or furnace replacement, while a cold-climate heat pump typically runs $12,000–$20,000. Your final investment depends on system type, efficiency tier, ductwork, and home size — get a free, no-obligation Infinity estimate in minutes.
Ranges: Eco Services WA Puget Sound HVAC benchmark (July 2026). Infinity confirms your exact price after a Manual J load calculation.
What does each HVAC system type cost?
| System | Typical installed range | Notes |
|---|---|---|
| Central AC | $9,000–$15,000 | 3-ton class, ~16 SEER2, installed and removed |
| Gas Furnace | $6,000–$11,000 | ~96% AFUE high-efficiency, installed |
| Cold-Climate Heat Pump Most popular in WA | $12,000–$20,000 | Variable-speed, all-electric heating + cooling |
| Ductless Mini-Split | $6,000–$16,000 | Per-zone; multi-zone systems cost more |
| Dual-Fuel (Heat Pump + Furnace) | $14,000–$22,000 | Heat pump with gas-furnace backup |
What changes the price?
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System type & efficiency tier
A code-minimum single-stage unit costs less up front than a variable-speed, high-SEER2 system — but the efficient tier lowers monthly bills and may qualify for rebates.
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Ductwork condition
Leaky, undersized, or missing ducts add cost. Ductless mini-splits skip ductwork entirely, which can be cheaper in older South Sound homes.
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Electrical & gas readiness
Switching to a heat pump may need an electrical panel upgrade; a new gas furnace may need venting or gas-line work.
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Home size & load
Square footage, insulation, windows, and layout determine the system size (tonnage/BTU) you actually need — we run a Manual J, not a square-footage guess.
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Permits, removal & disposal
Washington mechanical permits, old-equipment haul-away, and code upgrades are part of a legitimate installed price.
City-by-city cost guides
FAQs
- Do I need a permit to replace an HVAC system in Washington?
- Yes. Washington requires a mechanical permit for HVAC replacement. Infinity (WA Lic. INFINHA841B8) pulls the permit and schedules inspection as part of your installed price.
- Is a heat pump worth it in the South Sound?
- For most Pierce and Thurston County homes, yes. The mild, wet climate is ideal for cold-climate heat pumps, which heat and cool efficiently and frequently qualify for utility and statewide rebate programs that offset the higher upfront cost.
- How long does an HVAC installation take?
- A straightforward AC or furnace replacement is usually a one-day job. Heat-pump conversions, ductwork, or electrical upgrades can take two days. We confirm the timeline in your upfront quote.
- Where do these numbers come from?
- They're representative installed ranges for Puget Sound homes — equipment, labor, permits, and code items — published as the Eco Services WA July 2026 HVAC cost benchmark and used here for South Sound planning. Your Infinity written quote after a free on-site visit is exact. Call (253) 740-5135.
Want your exact number — not a range?
Call (253) 740-5135 or schedule online. Free second opinions welcome if you already have another quote.
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