Harrisburg, PA Noise from Specific Sources: HVAC & Mechanical Noise (2026)

The placement rule sits in the Environmental Performance Standards chapter of the Harrisburg zoning code, Chapter 7-331. Section 7-331.1 states the chapter's purpose: to provide standards for noise, lighting, hazardous waste, vibration, and other related items in order to reduce the impact of these items on adjacent properties and public health and safety. Section 7-331.2(A) makes the standards apply to all uses and activities in all zoning districts.

Section 7-331.6(A) is the equipment rule. Commercial, industrial, or institutional outdoor machinery that could create a noise nuisance must be placed toward a side of a building that does not face an abutting existing dwelling, residential district, school, or other noise sensitive use. The section does not list air conditioners, condensers, heat pumps or rooftop units by name, and it prints no decibel limit and no distance in feet. It is a siting rule, so the question at a site plan is which side of the building the machinery sits on. Subsection (B) then sends the reader to Chapter 3-343, Noise Control and Abatement, for additional requirements.

Chapter 3-343 supplies the separate nuisance test. Under § 3-343.1, a noise disturbance is any sound which endangers or injures the safety or health of humans or animals, annoys or disturbs a reasonable person of normal sensitivities, endangers or injures personal or real property, or violates § 3-343.2. Section 3-343.2(A) makes making, continuing to make, or causing a noise disturbance within the City of Harrisburg a violation of that chapter.

Two neighboring zoning sections matter for mechanical equipment on a lot. Section 7-331.3 requires signs marking significant toxic, biological, electrical and other hazards involving stationary outdoor machinery and storage, and requires fencing or walls reasonably adequate to discourage access by small children around stationary hazardous outdoor machinery. Section 7-331.7 bars any use from generating vibration that an average person can perceive without instruments on private property beyond the exterior lot line, except for necessary on-site construction of streets, structures, and utilities. Under § 7-331.2(B), the Zoning Officer can require an applicant to provide written descriptions of proposed operations and safeguards.