Big Lake Refrigeration services and repairs exhaust systems. Ventilators should be checked at least twice a year. For critical or severe applications a routine check every two to three months is suggested.


We service and repair make up air systems. Effective maintenance of makeup-air units requires regularly scheduled inspections. The unit should be given a top to bottom inspection twice a year, usually at the start of the cooling season and at the start of the heating season, for the best trouble free performance.