Do I need a permit for HVAC work in
Meridian, Mississippi?

Meridian HVAC permits—the key details

Meridian's Building Department enforces the 2020 International Mechanical Code (IMC) with Mississippi State Board of Health amendments, and permits are required for any installation, replacement, repair (if structural modification is involved), or alteration of an HVAC system in a residential or commercial building. The threshold is low: even a simple furnace-to-furnace replacement in the same location technically requires a permit if the new unit has a different capacity or if any ductwork, gas line, or electrical work is involved. The city does not have a 'minor repair exemption' for changeouts—if you're hiring someone to do the work, they must have a mechanical contractor license, and a permit must be pulled before work starts. For owner-occupants of single-family homes, Mississippi law allows owner-builder permits for mechanical work without requiring a contractor license, which means you can pull the permit yourself and have a family member or friend help with installation (though the inspectors will expect the homeowner to demonstrate basic understanding of code requirements during inspection). The permit covers plan review (if applicable—most residential HVAC is permitted over-the-counter with minimal review), rough-in inspection (ductwork, gas lines, refrigerant lines before closure), and a final inspection (system operation, pressurization test, refrigerant charge verification). Costs typically range from $150–$400 depending on equipment value and complexity; the fee is based on the replacement value of the system, not labor.