Oregon, Malheur County HVAC Permit Regulations and County Ordinances for Unincorporated Areas
Malheur County HVAC Permit Requirements
In Malheur County, Oregon, obtaining permits for HVAC installations is handled by the Malheur County Building Department. This department is responsible for plan review and inspections, and they issue building, plumbing, mechanical, and electrical permits. Replacing or installing a new HVAC system requires both mechanical and electrical permits to ensure compliance with current energy and safety codes.
For properties in unincorporated areas of Malheur County, the county government is responsible for issuing all types of building permits. The permitting process generally involves submitting a structural permit application to Planning & Zoning, obtaining approval from Environmental Health if a septic system is involved, and then submitting the structural permit application along with trade permits (electrical, plumbing, mechanical) to the Building Department.
Key steps and requirements include:
- Mechanical and Electrical Permits: These are required for HVAC installations.
- Plan Review: The Building Department completes plan review and inspections. Plans must be drawn to scale and show conformance to applicable local and state building codes. Specific details for HVAC equipment, ventilation, and connections must be included.
- Site Plan: A site plan drawn to scale is required, showing various details including the footprint of the structure and utility locations.
- Contractor Documentation: Licensed contractor documentation is required when submitting trade permits.
- Fees: Permit and plan review fees are based on the valuation of the work performed.
- Permit Validity: Permits expire if work is not commenced within 180 days of issuance or if work is suspended for 180 days.
It is important to note that even if a building permit is not required for certain minor repairs or structures, separate electrical, plumbing, or mechanical permits may still be necessary for HVAC installations.
Resources to Learn More
Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Oregon, including Malheur County.
Oregon Hvac Legislation, Codes, and Guidelines
Oregon HVAC Building Codes and Legislation
Oregon regulates heating, ventilation, and air conditioning (HVAC) systems through a series of state-specific specialty codes. These codes are updated periodically to incorporate modern standards, energy efficiency requirements, and safety protocols. As of April 2026, the primary codes governing mechanical systems in the state include the 2025 Oregon Mechanical Specialty Code (OMSC) and the 2023 Oregon Residential Specialty Code (ORSC).
The 2025 OMSC, which became mandatory on April 1, 2026, is based on the 2024 editions of the International Mechanical Code (IMC) and the International Fuel Gas Code (IFGC), with specific Oregon amendments. For residential construction, the 2023 ORSC provides the governing standards. Recent legislative and regulatory updates have introduced significant changes, including new requirements for heat pumps in certain new residential construction projects where split-system air conditioning is installed, aimed at improving energy efficiency and reducing long-term utility costs for homeowners.
Primary Regulatory Agencies
The administration and adoption of these building codes are managed by the following state entities:
- Oregon Building Codes Division (BCD): A division within the Department of Consumer and Business Services, the BCD is the primary agency responsible for adopting, administering, and enforcing the state's specialty codes, including the mechanical and residential codes.
- Residential and Manufactured Structures Board (RMSB): This board works with the BCD to review and approve updates to residential building codes, including recent measures regarding energy-efficient HVAC and heat pump mandates.
- Mechanical Board: This board collaborates with the BCD to adopt and administer the Oregon Mechanical Specialty Code.
- Construction Contractors Board (CCB): While the BCD sets the technical standards, the CCB is responsible for issuing specialty contracting licenses for HVAC work in the state.
Resources to Learn More