Notes: customer said the unit is working fine but he had someone is his attic and he told him his uv lights are not working. Customer was worried his air scrubbers were not working again so he called us out. Went to attic and found that air scrubbers are operational. The lights that are not working are the sanuvox lights those have to be replaced every year to keep coil sanitized or they will burn out customer had them installed June of last year so it has gone over a month. Recommended replacement of sanuvox bulbs and customer approved both lights are operating at this time. Recommendations: