Lake County, IN Noise from Specific Sources: HVAC & Mechanical Noise (2026)
Key Facts
- Governing section
- § 93.05(A)-(C)
- Residential/commercial limit
- 55 dBA at boundary
- Industrial limit
- 66 dBA at boundary
- Mixed-zone rule
- lower limit controls
- Vibration
- none perceptible beyond boundary
- First-offense fine
- up to $2,500
- Repeat-offense fine
- up to $7,500
Summary
Lake County caps continuous mechanical noise, including HVAC condensers and rooftop equipment, at the property line under its stationary-source rule. Residential and commercial properties may not exceed 55 dBA at any boundary point; industrial properties are capped at 66 dBA, and the lower limit controls where two zones meet.
(A) It shall be unlawful for any person to cause the sound pressure level to exceed the limits listed below at any point on the boundary of the property where the person is located. (1) If the person is located within a residential zone: 55 dBA at all times. (2) If the person is located within commercial zone: 55 dBA at all times. (3) If the person is located within an industrial zone: 66 dBA at all times.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-14: Supplement contains: Local legislation current through 6-9-2026; and State legislation current through Indiana Legislative Service, 2025 Acts, Pamphlet No. 3).
Full Breakdown
05 of the Lake County noise chapter regulates stationary sources, the category that covers a fixed piece of equipment such as an air-conditioning condenser, heat pump, rooftop unit, or exhaust fan running continuously from one property. Subsection (A) sets the ceiling: 55 dBA at all times for anyone located in a residential zone (R-1, R-2, R-3) or a commercial zone (B-1, B-2, B-3, OS-1), and 66 dBA at all times in the county's industrial zone (I-1), measured at any point on the property boundary of the parcel where the equipment sits.
Subsection (B) resolves boundary disputes between two different zones by applying the lower of the two limits regardless of which zone actually houses the noisy equipment, so an industrial-zoned property abutting a residential lot must still hold its HVAC noise to 55 dBA at that shared line. Subsection (C) adds a separate, zero-tolerance vibration rule: no residential or commercial property may produce earth-shaking vibration perceptible without instruments beyond its boundary, and industrial sources may not send perceptible vibration past the zone boundary. 02, so a complaint about HVAC noise that is technically under 55 dBA can still be pursued if it unreasonably disturbs a neighbor's peace or property enjoyment.
The rule applies only to unincorporated Lake County parcels; homes and businesses inside Crown Point, Merrillville, Schererville, and the county's other municipalities fall under those cities' own noise codes instead.
Violations & Fines
A stationary-source violation is punished under section 93.99's cross-reference to the county's general penalty, section 10.99: a fine of not more than $2,500 for a first offense and not more than $7,500 for a second or subsequent offense, with each day the equipment runs over the limit counting as a separate violation. The Lake County Police Department investigates complaints and citations are prosecuted by the County Attorney in Lake Superior Court, County Division, under section 93.07.
Frequently Asked Questions
How loud can my HVAC or other fixed equipment be at the property line in Lake County?
What happens if my HVAC unit is too loud and my neighbor complains?
Are these equipment noise limits enforced in Gary or Crown Point?
Sources & Official References
Other rules in Lake County
Compare Lake County to another location·View the Indiana noise from specific sources overview
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