Furnace, heat pump, or dual-fuel — sized for Spokane winters, not sales quotas.
96%+ AFUE gas furnaces, cold-climate heat pumps, and dual-fuel systems. Manual J load calc on every install. Avista rebate paperwork included.
- 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 heating system installation in Spokane typically runs $6,400–$18,800 for a high-efficiency gas furnace (96% AFUE) or cold-climate heat pump. Sized via Manual J, with permit pulled through Spokane County. Cold-climate heat pumps with 30% federal 25C tax credit and Avista rebates typically net $3,500–$5,000 off the install cost.
- Spokane 99% design temperature: 6°F. Cold-climate heat pumps maintain ≥80% heating capacity at 5°F (NEEP spec), so they’re a viable primary heat source for most Spokane homes.
- Gas furnace price range (96% AFUE, 60–100k BTU): $5,800–$9,400 installed.
- Cold-climate heat pump price range: $14,800–$19,800 installed.
Replacing a furnace isn’t just swapping boxes. The right system depends on your existing ductwork, insulation, electrical service, and how your home actually loses heat. We run a Manual J load calc on every install and walk you through the options.
For most Spokane homes, we recommend one of three paths: (1) a 96%+ AFUE modulating gas furnace if you have natural gas and existing ductwork, (2) a cold-climate heat pump if you don’t or want to electrify, or (3) a dual-fuel system pairing both for peak efficiency. We size for the worst week of the year — not the average.
What’s included
Every heating installation visit covers:
Manual J load calculation
We measure actual attic insulation, wall construction, window U-values, infiltration, and orientation. No rule-of-thumb guessing.
Equipment selection
Trane, Carrier, Lennox, Rheem, Goodman (gas). Mitsubishi, Daikin, Bosch (heat pump). Modulating, two-stage, or single-stage depending on budget and ductwork.
Ductwork review (Manual D)
Existing ductwork sized for the new equipment? Static pressure within spec? We catch problems before the install.
Gas line sizing verification
Spokane’s older homes often have undersized gas lines. We confirm BTU capacity before the install date.
Spokane County permit + inspection
Mechanical and gas permits pulled through Spokane County Building & Code Enforcement. Inspection scheduled and confirmed.
Manufacturer warranty registration
10-year parts + 10-year heat exchanger registered within 60 days. You get the certificate.
When to call
Signs you need heating installation now
Some signs mean you should call today, not next week. Catch them early and you save the equipment.
- 01
Furnace 15+ years old
Modern 96% AFUE furnaces are 25–35% more efficient than 1990s-era 80% units. R-22 refrigerant furnaces and aging boilers are expensive to keep alive.
- 02
Frequent repair calls
If you’ve spent more than 30% of replacement cost on repairs in 3 years, replacement usually wins.
- 03
Uneven heating across rooms
Modulating furnace + zoning system. We design to your comfort complaints.
- 04
Adding central heat to a home without it
High-velocity systems, ductwork install, or ductless heat pump. We’ve done all three on Spokane’s older housing stock.
- 05
Switching from oil to gas or heat pump
Oil furnaces common in pre-1980 Spokane homes. Conversion is straightforward; we handle the Avista coordination.
Pricing
Flat-rate. Quoted before work starts.
Typical price ranges for heating installation in Spokane County. Your tech writes the actual quote after diagnosis.
- 96% AFUE gas furnace (60k–80k BTU, single-stage): $5,800–$7,400
- 96% AFUE gas furnace (80k–100k BTU, two-stage): $7,800–$10,400
- 98% AFUE modulating gas furnace: $9,800–$14,400
- Cold-climate heat pump (3-ton, 18+ SEER): $11,800–$15,200
- Dual-fuel system (gas furnace + cold-climate heat pump): $14,800–$22,400
- Boiler replacement (cast iron, hydronic): $9,800–$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–$540
- 10-year manufacturer parts warranty: included
- Avista rebate paperwork: 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.
Heating Installation questions
Heating Installation FAQ
Depends on your ductwork, electrical service, and gas availability. In Spokane’s climate, a cold-climate heat pump (Mitsubishi, Daikin, Bosch) handles 90–95% of the heating load and saves significant money on the gas bill. We’ll model both options and show you the 10-year cost.
Like-for-like furnace replacement: 1 day. Cold-climate heat pump install: 1–2 days. Dual-fuel: 2–3 days. Boiler replacement: 2–4 days. We pull permits before the install date and schedule inspection same or next business day.
Yes — Trane XC95m, Carrier Infinity 98, Lennox SLP99V, Rheem Classic Plus. Modulating furnaces maintain temperature within 0.5°F vs 3–5°F for single-stage, and run quieter. Worth the upgrade if ductwork supports it.
Avista Utilities typically offers $300–$800 on qualifying high-efficiency furnaces and $800–$2,000 on qualifying heat pumps. Federal IRA tax credits (25C) add 30% back on heat pumps through 2032. We help with the paperwork.
Yes. 0% APR for 12 months on installs over $5,000, plus 5/10/15-year extended terms through Synchrony and Service Finance. No credit pull until you choose to apply.
We’ll quote a ductwork redesign as part of the install. Pushing high-static air through undersized ductwork is the #1 cause of premature blower failure.
Yes — old unit removed, refrigerant recovered per EPA Section 608, metal recycled. No additional charge.
Modern 96% AFUE modulating furnaces typically save $300–$700/year vs 80% AFUE equipment. Over 15 years, that’s $4,500–$10,500 — often enough to fund the upgrade.
Ready to book heating installation?
Real Spokane techs answer 6am–8pm, 7 days a week. Same-day service on most repairs.
Quick answer
Heating installation in Spokane. New heating system installation in Spokane typically runs $6,400–$18,800 for a high-efficiency gas furnace (96% AFUE) or cold-climate heat pump. Sized via Manual J, with permit pulled through Spokane County. Cold-climate heat pumps with 30% federal 25C tax credit and Avista rebates typically net $3,500–$5,000 off the install cost.
Key facts
What the numbers say
Spokane 99% design temperature: 6°F. Cold-climate heat pumps maintain ≥80% heating capacity at 5°F (NEEP spec), so they’re a viable primary heat source for most Spokane homes.
Gas furnace price range (96% AFUE, 60–100k BTU): $5,800–$9,400 installed.
Cold-climate heat pump price range: $14,800–$19,800 installed.
Federal IRA 25C tax credit: 30% on qualifying heat pumps (no cap), 30% up to $600 on gas furnaces.
Avista rebate on qualifying heat pumps: $300–$2,000.
Related questions
What else people ask about Heating installation in Spokane
How much does a new furnace cost in Spokane?
See the linked resource below for the full answer.
Should I install a heat pump or a gas furnace?
See the linked resource below for the full answer.
Are there rebates for heat pumps in Spokane?
See the linked resource below for the full answer.
Do I need a permit to install a furnace in Spokane?
See the linked resource below for the full answer.
What size furnace do I need?
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.
How we estimated utility-cost deltas in heat-pump comparisons
Operating-cost comparisons use Avista Utilities’ published 2024 residential rate schedule (basic electric charge $0.0895/kWh, natural gas $1.42/therm as of Q4 2024) and the NEEA cold-climate heat pump field-performance data set for the Spokane climate zone (4,250 heating-degree-days, 95% design temp 6°F). Equipment is sized per Manual J load calculation. Actual costs vary with thermostat setpoint, building envelope, and occupancy.
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
Annual heating cost (Spokane, gas furnace baseline)
Annual $ = (Heating Load BTU/hr × HDD × 24) ÷ (AFUE × 100,000) × $/thermSpokane example: Spokane 4,250 HDD, 60,000 BTU/hr heating load, 96% AFUE gas furnace, Avista $1.42/therm: (60,000 × 4,250 × 24) ÷ (0.96 × 100,000) × 1.42 = $1,808/year. A 9.0 HSPF2 cold-climate heat pump typically cuts this 35–55%, depending on thermostat setpoint and backup-strip usage.
When to use it: Comparing gas furnace vs heat-pump operating cost in Spokane’s climate.
Source: NWS Spokane climate data + Avista rate schedule + DOE Heat Pump Tech Roadmap
Cold-climate heat-pump simple payback (gas → heat pump)
Payback (years) = (Heat-pump cost − Federal 25C credit − utility rebate) ÷ annual gas savingsSpokane example: Spokane 1,800 sq ft home: $18,500 installed cost, $2,000 federal 25C, $1,500 Avista rebate, $1,000 manufacturer rebate = net $14,000. Annual gas savings $1,000 → 14-year payback. Including the 2025 Heat Pumps for Homeowners Act, payback drops to ~7 years. Your mileage varies with insulation and thermostat setpoint.
When to use it: Honest cost-benefit analysis for heat-pump retrofits. We don’t oversell 5-year paybacks.
Source: DSIRE + IRS Form 5695 + Avista rebate program
Glossary
Terms we use on this page ▾
- AFUE
- Annual Fuel Utilization Efficiency. The percentage of fuel energy converted to usable heat in a furnace over a typical year.
- A 96% AFUE gas furnace wastes 4% of fuel energy, mostly as vented exhaust. Modern condensing furnaces in Washington must be 95% AFUE or higher. The DOE federally mandates 80% AFUE as the minimum for new gas furnaces as of 2021.
- Source: DOE 10 CFR 430
- Cold-climate heat pump
- An air-source heat pump engineered to maintain ≥80% of heating capacity at 5°F and operate at ≥70% capacity at –15°F.
- A standard air-source heat pump loses capacity sharply below 20°F and stops heating around 0°F. Cold-climate units use vapor injection compressors, larger coils, and variable-speed inverter drives to maintain useful heating output deep into sub-freezing temperatures. Spokane’s 99% design temperature is 6°F, which puts us in cold-climate heat pump territory.
- Source: NEEP ccASHP Specification v6.0
- HSPF2 / HSPF
- Heating Seasonal Performance Factor 2. The heating efficiency of a heat pump, BTU heating output per watt-hour of electricity consumed over a typical heating season.
- HSPF2 replaced HSPF in 2023. Cold-climate heat pumps qualify for federal incentives at HSPF2 ≥ 8.5. The best cold-climate units (Mitsubishi Hyper-Heating, Daikin Aurora, Bosch IDS) hit HSPF2 11–13 with effective heating output to –15°F.
- Source: NEEP Cold-Climate Air-Source Heat Pump Specification v6.0
- 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
Sources
Where we sourced this ▾
[1]Avista Utilities 2024 Residential Rate Schedule
Avista Corporation · 2024-10
Operating-cost estimates for heat-pump vs gas-furnace comparisons.
[2]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
[3]DSIRE Washington State Rebate Database
NC Clean Energy Technology Center · 2025-01
Current Washington state and utility heat-pump rebate programs.
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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