The hvacr trade continues to press for answers to new and difficult questions. And the questions go beyond chemical infiltration of hvac systems to include basic building security issues, as building owners and tenants look to prevent anyone from tampering with air-handling equipment.
A two-pronged attack on the problem is taking shape as manufacturers are studying the effects of UV lighting on anthrax and other biological agents, while commercial contractors are looking for ways to secure access to mechanical rooms and rooftop units.