Marana, AZ Noise from Specific Sources: HVAC & Mechanical Noise (2026)

The Town of Marana does not have a standalone ordinance setting specific decibel limits for residential HVAC equipment in most zoning districts. HVAC noise falls under the general noise disturbance standard in Chapter 11-5 of the Marana Town Code, which prohibits noise that disturbs the peace of a reasonable person. Given the extreme summer heat in the Sonoran Desert where temperatures regularly exceed 110 degrees Fahrenheit, air conditioning is essentially mandatory and HVAC equipment runs continuously during summer months. The town's zoning and building codes require that outdoor HVAC condensing units maintain minimum setbacks from property lines, which provides some noise buffering. In the Resort and Recreation (RR) zone, Section 11-5-3 establishes decibel limits at property boundaries that may apply to persistent HVAC noise from commercial operations. New construction and HVAC replacements must meet the International Mechanical Code requirements adopted by Marana, including vibration isolation and proper mounting. Complaints about HVAC noise from neighbors are handled through Code Enforcement and evaluated on a case-by-case basis under the reasonable-person standard. Many Marana HOAs have additional rules about HVAC screening and placement that provide aesthetic and noise buffering beyond town requirements. Commercial HVAC systems on rooftops or in mechanical yards may be subject to additional review during the site plan approval process.