Trade directory · Lewiston metro · Idaho

HVAC contractors in
Lewiston, Idaho.

A public directory of licensed hvac contractors serving greater Lewiston. Market data, licensing requirements, and cost benchmarks — updated continuously from public sources.

Licensed Establishments
825
U.S. Census Bureau
Peak Season
May through September for cooling installations and repairs; October through February for heating system work
Market estimate
Avg. Response Time
24-48 hours for quotes, 3-5 days for non-emergency service calls
Operator average
§ A · Market rates

Common Job Costs

LEWISTON-ID · LOCAL ESTIMATES
Service
Description
Cost Range
HVAC system installation (3-ton unit)
Typical range based on local hvac system installation (3-ton unit) jobs.
$4,500 – $8,500
Furnace replacement
Typical range based on local furnace replacement jobs.
$2,800 – $6,200
Air conditioning repair
Typical range based on local air conditioning repair jobs.
$150 – $650
Ductwork installation
Typical range based on local ductwork installation jobs.
$2,200 – $5,800
Heat pump installation
Typical range based on local heat pump installation jobs.
$3,200 – $7,500
HVAC maintenance service
Typical range based on local hvac maintenance service jobs.
$120 – $300
§ B · Regulatory

Licensing Requirements

ID
§1

Licensing Requirements

Idaho requires HVAC contractors to hold a Public Works Contractor license through the Idaho Contractor Registration. Must pass trade-specific exam covering refrigeration, heating systems, and electrical components. License renewal required every 2 years with continuing education requirements. Refrigeration endorsement required for systems over 5 tons.

§2

Permit Requirements

City of Lewiston requires permits for HVAC installations, replacements, and major repairs. Permit fees range $75-200 depending on scope. Gas line work requires separate plumbing permit.

§3

Inspection Schedule

Initial rough-in inspection before concealment, final inspection upon completion. Gas connections require separate inspection by city inspector or approved third-party.

§4

Insurance Minimums

General liability minimum $300,000, workers compensation as required by Idaho Industrial Commission for employees. Bonding requirements vary by project size for public works.

§ C · Path to license

How to Get Licensed

6 STEPS
1

Meet basic requirements

Must be 18 years old, have high school diploma or equivalent, and provide proof of 4 years relevant work experience or approved apprenticeship completion.

01/06
2

Submit application

Complete Idaho Contractor Registration application with required documentation including work history verification, fingerprints for background check, and application fee.

02/06
3

Pass trade examination

Take and pass the HVAC specialty exam covering refrigeration systems, heating equipment, electrical components, and Idaho codes. Exam administered by approved testing agency.

03/06
4

Obtain insurance and bonding

Secure required general liability insurance ($300,000 minimum) and surety bond. Workers compensation required if hiring employees.

04/06
5

Pay fees and receive license

Pay all required fees including license fee and any outstanding amounts. License issued upon successful completion of all requirements.

05/06
6

Maintain license

Renew license every 2 years with continuing education requirements. Keep insurance current and report any changes in business structure to state board.

06/06
§ D · Field notes

About This Market

UPDATED APR 2026

Lewiston's HVAC market serves a mix of older residential stock and light commercial buildings, with steady demand driven by the region's temperature swings from summer highs in the 90s to winter lows below freezing. Competition is moderate with approximately 15-20 active contractors in the immediate area. Replacement work dominates due to aging systems, while new construction provides steady but limited opportunities. Costs run 10-15% below Boise levels but material transport from Spokane adds logistics considerations. The market requires contractors who can handle both heating and cooling competently, as many customers need year-round comfort solutions. Success in Lewiston means building solid relationships with local suppliers, maintaining proper licensing with the state, and understanding the city's permitting process. The inspection schedule is straightforward but strictly enforced, particularly for gas connections. Peak seasons are predictable - cooling work from late spring through early fall, heating emergencies in winter. Smart contractors stock common parts locally and maintain relationships with Spokane distributors for specialty items. Customer base values reliability over flash, and word-of-mouth referrals drive most business growth.

Data Sources
  • Licensed establishments count
    U.S. Census Bureau
  • Licensing requirements
    Idaho Contractor Registration Board
  • Permit fees and requirements
    City of Lewiston Building Department
  • Cost ranges and market conditions
    Local market estimates
  • Insurance minimums
    Idaho Industrial Commission
§ E · FAQ

Frequently Asked Questions

05 QUESTIONS
Q/01

What license do I need to work as an HVAC contractor in Lewiston, ID?

You need an Idaho Public Works Contractor license with HVAC classification. This requires passing a trade exam and meeting bonding/insurance requirements through Idaho Contractor Registration.

Q/02

How much does an HVAC permit cost in Lewiston?

City of Lewiston HVAC permits typically cost $75-200 depending on project scope. Gas line connections may require additional plumbing permits with separate fees.

Q/03

What's the typical cost for furnace replacement in Lewiston?

Furnace replacement in Lewiston ranges from $2,800-6,200 depending on unit efficiency, size, and installation complexity. Prices reflect regional market conditions and material costs.

Q/04

How many HVAC contractors operate in Idaho?

Idaho has approximately 825 licensed HVAC establishments statewide according to Census data, with 15-20 active contractors serving the immediate Lewiston area.

Q/05

When is peak season for HVAC work in Lewiston?

Peak seasons split between cooling work May-September and heating system work October-February. Emergency heating calls spike during winter months when temperatures drop below freezing.

§ F · Directory

HVAC contractors in Lewiston

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