First and foremost, if your swamp cooler isn’t cooling your home like it usually does, that’s a sign you need to call us. However, strange sounds or smells could also indicate a problem. Scraping or screeching sounds probably indicate a mechanical issue, while odd, musty odors might point to trapped water and mold growth. If anything seems ‘off’ about your swamp cooler, it’s better to be safe than sorry and give us a call for service.