AC Installation in Longview
Get fast, fair pricing from licensed local pros. Typical Longview cost: $3.5k – $7k+ installed.
- Central AC (replace)
- $3.5k – $7k+
- New central AC + ducts
- $5.2k – $11.5k+
- Ductless mini-split
- $2.6k – $7k
- Permit & inspection
- $65 – $350
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AC installation cost by system.
Installed pricing for Longview, adjusted for local labor. Higher SEER2 tiers, larger tonnage, and new ductwork add to the base.
In Longview, Washington, AC installation costs typically range from $3,500 to $11,300 depending on the system type and scope of work. Central AC like-for-like replacements run $3,500–$7,000+, while new systems with ductwork cost $5,200–$11,300+. Ductless mini-splits range $2,600–$7,000, and heat pumps—strongly recommended for this mild marine climate—cost $4,400–$10,500+. Permits and Manual J load calculations are required by the Washington State Energy Code, adding to project costs but ensuring proper sizing and efficiency.
- Central AC, like-for-likeExisting ducts in good shape$3,500 – $7,000+
- New central AC + ductworkFirst-time or full duct replacement$5,200 – $11,500+
- Ductless mini-splitSingle or multi-zone, no ducts$2,600 – $7,000
- Heat pump (cooling + heating)Qualifies for federal & local rebates$4,400 – $10,500+
- Permit & inspectionRequired in most jurisdictions$65 – $350
* High-efficiency systems cost more upfront but may qualify for federal tax credits and utility rebates.
Pricing reviewed · Local data from U.S. Census ACS
HVAC systems in Longview
U.S. Census ACS- Households
- 15,089
- Homeowners
- 8,445
- 50% own
- Median home value
- $307,100
- Median income
- $57,920
- Median home built
- 1966
- Housing units
- 16,847
With a median home built in 1966, many Longview AC and furnace systems are at or past their 12–15 year lifespan — a common reason replacements spike here.
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What’s different about Longview.
Generic cost pages skip the things that actually decide your price and which system fits here — local code, climate, and the money you can claim back.
Recommended unit for Longview
Given Washington’s mild (marine, west of cascades) climate and electric heating, high-seer2 heat pump is the sensible default for most Longview homes. The cooling season is short, so the budget is better spent on heating efficiency than on ultra-high SEER2. A pro can confirm the right size and system for your home with a load calculation.
Sources: PSE Home Heating Rebates · WA Dept. of Commerce HEAR Program · 2021 Washington State Energy Code - Residential (WAC 51-11R)
What Longview code requires
Installing or replacing an HVAC system in Longview follows Washington rules under the state mechanical code. Here’s what applies statewide:
- PermitRequired
Mechanical permit pulled by your licensed HVAC contractor; covers equipment, refrigerant, and the electrical disconnect.
- SEER2 minimum13.4 SEER2 (North)
Federal North-region minimum for new split-system AC. Higher tiers cut bills and unlock rebates.
- Load calculationRequired (Manual J)
Sizing by load calc — not rule of thumb — prevents an oversized unit that short-cycles and never dehumidifies.
- RefrigerantR-454B / R-32 (R-410A phased down 2025+)
- Good to know—
The Washington State Energy Code (WSEC-R) requires ACCA Manual J load calcs and Manual S equipment sizing at permit, and recent code strongly favors/effectively requires heat pumps for space heating in new residential construction.
Sources: PSE Home Heating Rebates · WA Dept. of Commerce HEAR Program · 2021 Washington State Energy Code - Residential (WAC 51-11R)
Not sure which rules and rebates apply to your home?
A licensed Longview pro will walk you through code, the right unit, and what you can claim back — in one quick call.
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Money back in Longview
Washington heating is mostly electric, which shapes the money back:
- State$1,500 (up to $2,400 income-qualified Efficiency Boost)Puget Sound Energy - Electric resistance to air-source heat pump conversion rebate →
State or utility program — verify eligibility before you buy.
- StateUp to $8,000 for heat pumps (income-qualified)Washington Dept. of Commerce - Home Electrification and Appliance Rebates (HEAR) →
State or utility program — verify eligibility before you buy.
- Federal30% of cost, up to $2,000Federal 25C tax credit — heat pump →
For a qualifying ENERGY STAR heat pump meeting the CEE efficiency tier. Claimed on your federal return.
The federal 25C tax credit (30%, up to $2,000 for a qualifying heat pump and up to $600 for a high-efficiency central AC) applies in every state, including Washington.
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- 1
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- 2
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- 3
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AC Installation in Longview, explained.
What affects AC installation costs in Longview?
System type is the biggest factor: heat pumps cost more upfront than central AC but qualify for the federal 25C tax credit (30%, up to $2,000). Older homes (median built 1966) may need ductwork modifications or new ducts, adding $1,700–$6,000. Permit fees and Manual J load calculations are mandatory and vary by contractor. The mild climate means cooling demand is low, so smaller, more affordable systems may suffice.
Common AC installation issues in Longview
Undersized or oversized systems
Without a Manual J load calculation, a system may be too large (short cycling) or too small (inadequate cooling). Local code requires this calculation.
Aging ductwork
Homes built in the 1960s often have undersized or leaky ducts that need replacement or sealing, increasing costs.
Permit delays
Washington requires a mechanical permit for AC installation. Delays can occur if plans lack Manual J or Manual S documentation.
AC Installation FAQs — Longview
Yes, Washington State requires a mechanical permit for any new AC or heat pump installation. Your contractor must submit a Manual J load calculation and Manual S equipment selection.
AC Installation near Longview
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