A national automotive reseller had recently moved into and renovated an older facility and experienced recurring issues with objectionable odors. A foul sewage-like smell would come and go in various areas of the building, without any particular pattern. The odor was affecting sales – people don’t like sewer smell when they are shopping for a car! After unsuccessfully trying to diagnose the odor’s cause with several other companies, they turned to BPT. On the first visit, BPT identified the odor’s source. A number of condensate traps which were connected to the sewer had dried out, and went unnoticed because they were above the cieling and hard to access. We recommended a simple and inexpensive fix to the problem, which was implemented, completely wiping out the stench. Our long and varied experience in HVAC design, our strong understanding of how HVAC equipment operates, coupled with our troubleshooting and communication skills helped this client resolve a long-standing problem that was distracting customers and reducing sales.