This should be a familiar scenario: you set your thermostat to the desired temperature, wait a few minutes, then hear the fan of your furnace making that familiar whirring sound. The reason it takes a few minutes is because the plenum actually needs to heat up after the burners light before the fan will begin running. Once you hear that whirring, though, you can rely on efficient and effective heat to make its way into your home.
But what if it’s interrupted by another sound entirely? If a sound occurs that you’re not expecting or you have never heard your furnace make before, then it’s time to call for professional heating services in Hendersonville, TN. In the meantime, we’ve provided some guidance below as to what these noises can mean.