STATE LICENSE
RequiredIdaho HVAC Board — Division of Occupation…
Under Idaho Code Title 54, Chapter 50, HVAC covers warm-air and water heating systems, heat pumps, boilers, pool heaters, space heaters, decorative gas and solid-fuel appliances, gas, propane, electric, or oil-fired water heaters, ventilation, and air conditioning (§ 54-5003(3)). Working without a certificate of competency or apprentice registration is a misdemeanor (§ 54-5022). A contractor must pass a Board exam and post a $2,000 bond (§ 54-5007; IDAPA 24.39.70.100.03); a journeyman needs 8,000 apprentice hours plus 576 hours of instruction, or 16,000 hours, and an exam.
HVAC certification is exclusively state: no local jurisdiction may require added certification, registration, or fees (§ 54-5015(2)), and certificate holders are exempt from contractor registration (§ 54-5205(1)). DOPL's fee table lists a contractor certificate at $225 for three years ($150 renewal) plus a $35 application fee, and DOPL will move the HVAC Board to biennial licensure on October 30, 2026. Technicians who handle refrigerants also need EPA Section 608 certification.
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
HVAC certification is exclusively state (§ 54-5015(1)–(2)); local jurisdictions may not add certification, registration, or fees but may impose stricter public safety rules. Permits and inspections come from DOPL or the local program; under § 54-5020A (2026) a permit holder may hire a third-party inspector if an inspection is not done within 48 business hours.
The local offices section below names the exact permit desk for every Idaho county on file.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.
Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
§ 54-5012 sets a $75 contractor certificate valid two years or issued at the annual rate for up to three; DOPL's table shows $225 for three years.
HVAC or plumbing certificate holders may install boilers, fuel piping, and hydronic piping; HVAC licensees may run 24-volt control wiring on equipment of 5 tons or less (§ 54-5015(4)).
DOPL announced the HVAC Board's transition to biennial licensure on October 30, 2026.
A practical sequence for a new HVAC contractor in Idaho. Actual agency processing times are noted in the ledger above.
Each item names the issuing authority, cycle, and citation.
Statutory consequences with their citations — not estimates, not “commonly cited” guesses.
Doing HVAC work without a certificate or registration, without a permit, or in violation of the chapter or rules.
An expired certificate may be revived within one year only by paying a revival fee plus the full renewal fee and any outstanding penalties.
Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.
| County · City | Permit office | Portal |
|---|---|---|
| Ada County Boise | City of Boise Planning and Development Services — Building Division ↗ Unincorporated: Ada County Development Services — Building Division ↗ | Boise Permitting and Licensing System (Accela Citizen Access) ↗ |
Every fact in this file was checked against these official sources on October 2026.
Pending verification: Term conflict: § 54-5013(1) says certificates expire 24 months from issue, while DOPL's fee table lists three-year contractor and journeyman terms (§ 54-5012 allows issuance at the annual rate for up to three years) · Whether any continuing education is required for HVAC renewal (none located in chapter 50 or IDAPA 24.39.70) · Whether an HVAC contractor must also hold or employ a journeyman (IDAPA 24.39.70.100.03 lists only the exam and bond) · HVAC exam vendor and exam fees
General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.
Store licenses, permits, policies, and renewal dates in one place.