Idaho uses the International Mechanical Code, and most HVAC installation work in Pocatello and Bannock County requires a mechanical permit. This is a common area of confusion for homeowners, partly because permit requirements vary by jurisdiction and partly because not every contractor is consistent about when they pull permits. Understanding what triggers a permit, who is responsible for obtaining it, and what the inspection process looks like helps you have an informed conversation with any HVAC contractor.

City of Pocatello vs. Bannock County Jurisdiction

If your home is within the incorporated city limits of Pocatello, permits are administered by the City of Pocatello Building Department. If you are outside city limits but within Bannock County (including areas like Chubbuck, which has its own building department, or unincorporated areas), the jurisdiction changes. Chubbuck has its own building services. Unincorporated Bannock County falls under Bannock County’s building department.

Falls 2 Falls operates throughout Bannock County and the surrounding areas. We know which jurisdiction applies to your address and pull permits accordingly. For homeowners who want to verify which department handles their property, the county assessor’s records typically show the incorporated vs. unincorporated status.

What HVAC Work Requires a Mechanical Permit in Pocatello

The following types of work generally require a mechanical permit in Pocatello and Bannock County:

• New furnace or air conditioner installation, replacing major equipment always requires a permit and inspection in Idaho
• Heat pump installation, same as furnace/AC replacement
• New ductwork installation, adding or substantially modifying the duct system requires a permit
• Gas line work, any new gas connections or line modifications connected to HVAC equipment require permits and often separate gas line permits
• New construction HVAC, part of the broader building permit package
• Commercial HVAC work, generally requires permits regardless of scope

Work that typically does NOT require a permit includes like-for-like replacement of components (blower motors, igniters, flame sensors, control boards) and routine maintenance and tune-up services. If there is any ambiguity about whether a specific scope of work requires a permit, the right answer is to check with the applicable building department before starting work.

Who Pulls the Permit

The licensed mechanical contractor doing the work is responsible for pulling the permit. This is one reason to use a licensed contractor rather than an unlicensed operator. Idaho requires HVAC contractors to hold a mechanical contractor’s license from the Division of Building Safety (DBS). Licensed contractors are registered with the state and can legally pull mechanical permits. An unlicensed person doing installation work and skipping permits creates permit and insurance liability for the homeowner.

At Falls 2 Falls, we handle permitting as part of the installation process. You do not need to pull your own permit or manage the inspection schedule. We coordinate the permit application, inspection scheduling, and inspection completion. See our HVAC installation in Pocatello page for what the full installation process looks like, or call (208) 681-2884 with questions.

What the Inspection Involves

After permitted HVAC work is completed, a building inspector visits to verify the installation meets code. For a furnace replacement in Pocatello, the inspector typically checks gas connections, flue venting, combustion air supply, and equipment clearances. The inspection is not a lengthy process for a straightforward equipment replacement. It typically takes 15 to 30 minutes. We schedule the inspection and are on-site during the inspection to answer any questions.

Failing to get a required permit and inspection on HVAC work creates problems when you sell the property. Home inspectors and buyers’ agents commonly check permit history through city and county records. Unpermitted HVAC work can complicate or delay a sale. See our gallery to see examples of our permitted installation work, and our contact page to schedule a consultation.