Project Overview:

SSWA was retained to investigate a noise complaint within a residential condominium located in downtown Toronto. The concern involved persistent and intrusive noise affecting a dwelling unit, with the source initially unknown.

The objective of the study was to identify the source of the noise, assess its severity, and provide guidance to support resolution. 

Challenges

The investigation involved identifying the source of noise within a fully occupied residential building, where multiple mechanical systems and neighbouring units could contribute to the issue. The intermittent nature and tonal quality of the noise made it difficult to isolate, particularly within a complex indoor environment where sound can travel through walls, floors, and building systems.

In addition, the concern required coordination with occupants and property management, along with testing under different operating conditions to accurately replicate and assess the issue.

Approach

SSWA undertook a detailed investigation combining on-site measurements, equipment testing, and occupant feedback to isolate and evaluate the noise source. The study involved reviewing building mechanical systems, conducting sound level measurements within the affected unit, and performing controlled testing.

Measurements were taken across multiple rooms using precision instrumentation, and results were analyzed to assess both overall sound levels and tonal characteristics. This step-by-step approach allowed for confirmation of the noise source and a clear understanding of how it was affecting the unit.

Results and Solutions

The investigation confirmed that the noise was originating from a heat pump unit located in a neighbouring suite. Testing demonstrated that sound levels within the affected unit exceeded commonly accepted indoor noise guidelines, particularly when the equipment was operating.

The noise was also found to have distinct tonal characteristics, which increased its perceived annoyance. It was concluded that sound levels exceeded recommended criteria across multiple rooms when the source equipment was active, while background conditions remained acceptable when the equipment was off.

Additional testing ruled out other potential sources within the building, confirming that the identified equipment was the sole contributor to the issue.

SSWA provided clear direction to address the identified noise source, including recommendations for further inspection of the mechanical equipment to determine whether it was operating abnormally. Guidance was also provided to support mitigation measures to reduce sound levels and improve acoustic conditions within the affected unit.

These recommendations were intended to support a practical resolution and restore acceptable living conditions for occupants.

Outcome

The study provided a clear and defensible identification of the noise source, along with an evidence-based path toward resolution. By isolating the issue and confirming its cause, SSWA enabled property management to take informed next steps.

The investigation helped reduce uncertainty, supported effective communication between parties, and provided a structured approach to resolving indoor noise concerns within a multi-unit residential environment.