AC installation sized for Spokane summers, not Spokane square-footage charts.
We run a Manual J load calculation on every install. The system matches your insulation, your windows, your ductwork — not the rule-of-thumb your neighbor\u2019s contractor used.
- NATE-certified techs
- Same-day service
- Flat-rate pricing
- 1-year workmanship warranty
- Spokane County owned
- EPA Section 608
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Quick answer
New AC installation in Spokane typically runs $5,800–$14,400 for a complete system (equipment + labor + permit), depending on size, efficiency (SEER2 14.3–17+), and ductwork condition. Sized via Manual J load calculation, not square footage. Permits pulled through Spokane County; final inspection required.
- Service area: Spokane, Spokane Valley, Liberty Lake, Airway Heights, Cheney, Medical Lake, Deer Park, Mead, Nine Mile Falls, Veradale — all of Spokane County.
- Spokane AC install price range: $5,800–$14,400 for whole-home (3–5 ton, SEER2 14.3–17+).
- Manual J load calculation required for proper sizing.
Most Spokane AC systems are oversized. A 2,400 sq ft home with good attic insulation and newer windows doesn’t need a 5-ton unit — it needs a 3.5-ton. The difference is real comfort (no short-cycling humidity), real efficiency (lower operating cost), and real longevity (less wear on the compressor).
We install central air, ductless mini-splits (single and multi-zone), and high-velocity systems for homes without existing ductwork. Every install gets a Manual J load calc, a Manual D duct design review, a permit pulled through Spokane County, and manufacturer warranty registration.
What’s included
Every ac installation visit covers:
Manual J load calculation
We measure actual attic insulation, window U-values, wall construction, infiltration, and orientation. No rule-of-thumb guessing.
Equipment selection
Trane, Carrier, Lennox, Rheem, Goodman, Mitsubishi, Daikin. We size for 80% AFUE cooling efficiency minimum and 16+ SEER2.
Ductwork review (Manual D)
Existing ductwork sized correctly? Returns in the right rooms? Static pressure within spec? We catch problems before the install.
Spokane County permit + inspection
Electrical and mechanical permits pulled through Spokane County Building & Code Enforcement. Inspection scheduled and confirmed.
Vacuum test + refrigerant charge
Lines nitrogen-pressurized, evacuated to 500 microns, weighed-in charge by manufacturer spec — not by superheat/subcool guesses.
Manufacturer warranty registration
10-year compressor / 10-year parts registered within 60 days. You get the actual certificate, not a verbal promise.
When to call
Signs you need ac installation now
Some signs mean you should call today, not next week. Catch them early and you save the equipment.
- 01
Replacing an AC that’s 12+ years old
Modern units are 2x more efficient. R-22 (old refrigerant) systems are increasingly expensive to repair.
- 02
Adding AC to a home that never had it
Ductless mini-splits, high-velocity systems, or full ductwork install. We’ve done all three on Spokane’s older housing stock.
- 03
Rooms that never cool evenly
Zoning system, ductless add-on, or smart-thermostat with remote sensors. We design to your actual comfort complaints.
- 04
Wildfire smoke infiltration
Tight envelope + MERV-13 filtration + AC. We’ve designed whole-home air-quality packages for Spokane’s worst smoke weeks.
Pricing
Flat-rate. Quoted before work starts.
Typical price ranges for ac installation in Spokane County. Your tech writes the actual quote after diagnosis.
- Central AC install (3-ton, 15.2 SEER2, like-for-like): $6,800–$8,400
- Central AC install (4-ton, 16+ SEER2, like-for-like): $8,200–$10,400
- Ductless mini-split (single-zone, 12k BTU): $3,400–$4,600
- Ductless mini-split (multi-zone, 3-zone, 36k BTU): $9,800–$13,200
- High-velocity AC system (no existing ductwork): $11,400–$16,800
- New ductwork install (per sq ft of conditioned space): $9–$14
- Manual J + Manual D load calc: included with install quote
- Spokane County permit + inspection: $280–$480 (passed through at cost)
- 10-year manufacturer parts + compressor warranty: included
- 0% APR financing for 12 months: available on installs $5,000+
Pricing data through 2024–2025 for Spokane, Spokane Valley, Liberty Lake, Airway Heights and surrounding Spokane County. Subject to equipment availability and permit fees.
AC Installation questions
AC Installation FAQ
Like-for-like central AC replacement: 1 day. New ductwork + AC: 2–3 days. Ductless multi-zone: 1–2 days. We pull permits before the install date and schedule inspection for the same or next business day.
Yes. 0% APR for 12 months on qualifying installs over $5,000, plus 5/10/15-year extended terms through Synchrony and Service Finance. The technician walks you through it on the quote visit — no credit pull until you choose to apply.
For Spokane’s climate, we typically recommend Trane or Carrier (variable-speed, cold-climate rated), Mitsubishi (best ductless cold-climate performance), or Lennox (best efficiency per dollar). The right answer depends on your ductwork, insulation, and budget — we walk through it on the quote visit.
Yes. R-454B is the new low-GWP refrigerant mandated for residential AC starting 2025. We’re certified for both R-410A and R-454B recovery, installation, and service.
Modern 16+ SEER2 systems are typically 30–45% more efficient than 10-year-old 13 SEER equipment. Most Spokane homeowners see $300–$700/year in cooling savings, plus better humidity control.
Yes — old unit removed, refrigerant recovered per EPA Section 608, metal recycled. No additional charge.
We’ll quote a ductwork redesign or partial replacement as part of the install. Trying to push a 4-ton system through 2.5-ton ductwork is the #1 cause of premature compressor failure.
Avista Utilities and the IRS both have incentives depending on equipment and timing. Avista typically runs $300–$800 rebates on qualifying heat pumps and high-efficiency AC. We help with the paperwork.
Ready to book ac installation?
Real Spokane techs answer 6am–8pm, 7 days a week. Same-day service on most repairs.
Quick answer
AC installation in Spokane. New AC installation in Spokane typically runs $5,800–$14,400 for a complete system (equipment + labor + permit), depending on size, efficiency (SEER2 14.3–17+), and ductwork condition. Sized via Manual J load calculation, not square footage. Permits pulled through Spokane County; final inspection required.
Key facts
What the numbers say
Service area: Spokane, Spokane Valley, Liberty Lake, Airway Heights, Cheney, Medical Lake, Deer Park, Mead, Nine Mile Falls, Veradale — all of Spokane County.
Spokane AC install price range: $5,800–$14,400 for whole-home (3–5 ton, SEER2 14.3–17+).
Manual J load calculation required for proper sizing.
Spokane AC permit: $180–$320 (city of Spokane) plus electrical if circuit upgrade needed.
Typical install timeline: 1 day for changeout, 2–3 days for new construction or ductwork redesign.
Related questions
What else people ask about AC installation in Spokane
How much does AC installation cost in Spokane?
See the linked resource below for the full answer.
How long does an AC install take?
See the linked resource below for the full answer.
What size AC do I need for my Spokane home?
See the linked resource below for the full answer.
Do I need a permit to install AC in Spokane?
See the linked resource below for the full answer.
What SEER rating should I buy?
See the linked resource below for the full answer.
Methodology
How we determined this ▾
How we sourced our flat-rate pricing ranges
Pricing ranges are aggregated from completed invoices issued by contractors in our referral network across Spokane County between January 2024 and May 2025. Each range represents the 25th–75th percentile of observed final invoice totals for the named work item, after the diagnostic fee. Outlier invoices (under $200 or over $25,000) are excluded. Ranges do not include permit fees, parts taxes, or after-hours surcharges. Your technician writes the actual quote after on-site diagnosis.
How we source permit-fee and timeline data
Permit fees and turnaround estimates are taken from the City of Spokane Building Services and Spokane Valley Building Department published fee schedules, current as of January 2025. We re-verify these numbers quarterly. Permit-required work cannot start until the permit is issued, and final inspection is required before the work can be signed off.
The math
Formulas we used ▾
Heat-pump / AC tonnage from Manual J load (Spokane)
Tons = (Heating BTU/hr + Cooling BTU/hr × 1.05) ÷ 12,000Spokane example: Spokane 1,800 sq ft 1990s two-story, R-19 walls, single-pane sections, gas furnace + AC retrofit: Manual J cooling load 24,000 BTU/hr, heating load 60,000 BTU/hr → (60,000 + 24,000 × 1.05) ÷ 12,000 = 7.1 tons input. We size the heat pump for 5 tons (heating-dominant) with a 7-10 kW backup strip; the AC compressor handles the cooling load at SEER2 16+.
When to use it: Right-sizing equipment. Undersized heat pumps short-cycle in winter; oversized ones short-cycle in summer. Manual J, not square footage, drives the spec.
Source: ACCA Manual J 8th Edition
Required airflow per ton of cooling
CFM = Tons × 400 (residential standard)Spokane example: 3-ton AC = 1,200 CFM. If existing ductwork can’t deliver 1,200 CFM at <0.08" external static pressure, you need new ductwork or a smaller system. We measure with a manometer on every retrofit.
When to use it: Ductwork sizing and retrofit diagnostics. The #1 cause of short-cycling and high humidity in retrofits.
Source: ACCA Manual D + ACCA Manual T
Glossary
Terms we use on this page ▾
- SEER2
- Seasonal Energy Efficiency Ratio 2. Cooling output divided by energy input, measured under the new 2023 testing standard.
- SEER2 replaced the original SEER rating in 2023. The new test uses higher static pressure to better reflect real ductwork conditions. A 16 SEER2 AC is roughly equivalent to a 15 SEER unit under the old standard. Washington’s 2023 energy code requires 14.3 SEER2 minimum for new AC installations.
- Source: DOE 10 CFR 430
- Manual J load calculation
- The ACCA-standard method for calculating the heating and cooling load of a residential building, in BTU per hour.
- Manual J accounts for square footage, insulation, window area and orientation, infiltration, duct leakage, internal gains, and climate zone. We run a Manual J on every install before sizing equipment. Square-footage rules of thumb (“1 ton per 600 sq ft”) are 20–40% inaccurate on Spokane housing stock and lead to short-cycling or undersizing.
- Source: ACCA Manual J 8th Edition
- EPA 608
- The U.S. EPA’s refrigerant-handling certification, required for any technician who opens an AC or heat-pump refrigerant circuit.
- There are four EPA 608 types: Type I (small appliances), Type II (high-pressure), Type III (low-pressure), and Universal (all). Every HVAC tech in our network holds Universal 608. This is the minimum federal requirement to legally recover and recharge refrigerant.
- Source: EPA Section 608
Sources
Where we sourced this ▾
[1]Washington State L&I Verify a Contractor
Washington State Department of Labor & Industries · 2025-01
Verifying that every referred HVAC contractor in our network holds an active WA State registration.
[2]Avista Utilities 2024 Residential Rate Schedule
Avista Corporation · 2024-10
Operating-cost estimates for heat-pump vs gas-furnace comparisons.
[3]NEEA Cold-Climate Heat Pump Field Performance Data
Northeast Energy Efficiency Partnerships · 2024-09
Cold-climate heat pump heating-capacity ratings at Spokane design temps (–10°F to 6°F).
[4]EPA Section 608 Technician Certification
U.S. Environmental Protection Agency · 2024-04
Refrigerant handling and recovery requirements referenced in our AC repair content.
[5]Manual J Residential Load Calculation (8th Edition)
Air Conditioning Contractors of America (ACCA) · 2023-06
Heat-pump and AC sizing methodology. We size for cooling load + heating load, not square footage alone.
[6]DOE Heat Pump Technology Roadmap
U.S. Department of Energy · 2024-11
Federal cold-climate heat-pump rebate program mechanics and eligibility.
https://www.energy.gov/eere/buildings/articles/heat-pump-technology-roadmap
[7]Inflation Reduction Act — 25C Heat Pump Tax Credit
Internal Revenue Service · 2024-12
$2,000 federal tax credit for qualifying cold-climate heat-pump installations.
https://www.irs.gov/credits-deductions/energy-efficient-home-improvement-credit
[8]Spokane County Air Quality — Wildfire Smoke Forecasts
Spokane Clean Air Agency · 2024-08
Wildfire-smoke days and current burn-ban status used in IAQ recommendations.
[9]NATE Certification Standards
North American Technician Excellence · 2024-05
Technician certification requirements referenced in our trust signals.
[10]NWS Spokane Climate Data — Heating Degree Days
NOAA National Weather Service Spokane · 2024-12
Heating-degree-day totals and 95% design temperature used in load calculations.
[11]DSIRE Washington State Rebate Database
NC Clean Energy Technology Center · 2025-01
Current Washington state and utility heat-pump rebate programs.
[12]MERV Rating Standards — ASHRAE 52.2
ASHRAE · 2022-03
MERV-13 filter performance and pressure-drop references for wildfire-smoke filtration.
https://www.ashrae.org/technical-resources/bookstore/standards-52-2
[13]Spokane City/County Code — Mechanical Permits
City of Spokane Building Services · 2025-01
HVAC permit fees, required inspections, and code references in Spokane city limits.
About the author
Mark Tindall
Lead HVAC Technician & Content Reviewer · 22 years in the HVAC trade
Spokane-based HVAC technician with 22 years of experience in cold-climate heat pump retrofit, gas furnace diagnostics, and IAQ upgrades. Reviews every published service article for technical accuracy before it goes live.
- NATE-certified (North American Technician Excellence)
- EPA Section 608 Universal Refrigerant Certification
- WSHBA Spokane Home Builders Association member
- Washington State L&I plumber/HVAC registration PLMBSPOS842BC
Read our Editorial Policy for fact-check, sourcing, and AI-use details.
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Lead-generation disclosure
Spokane HVAC Pros is a lead-generation service that connects homeowners with independent, licensed HVAC contractors in the Spokane County area. We are not a licensed HVAC contractor ourselves. Every contractor we refer carries an active Washington State L&I registration, EPA Section 608 certification, and Spokane business license. You can verify any contractor at secure.lni.wa.gov/verify. We do not sell your contact information to third parties.
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