How can you know when your heating and cooling system is all about to die or has problems? The HVAC system will produce sounds, not produce enough heated up or cooled air, and have hot and cold spots. If your HVAC system is making noises, then it is not doing very well. This usually means there exists a piece inside your system that can be damaged or broken. A hissing noise could imply that your air conditioner is leaking refrigerant. Some sort of grinding noise could mean your fan motor belt is harmed or needs lubrication. Also, there are rattling noises and this can be that the heat exchanger is actually cracked. A cracked heat exchanger is expensive to interchange and could release carbon monoxide. The HVAC technician should appear and fix this issue right away. Your system not producing sufficient heated or cooled air is frequently because the air or furnace filters that are clogged. A furnace, air conditioner or heat pump system all use a sort of filter. The filters come in numerous sizes and the holes within the filters are different sizes. In peak heating and cooling seasons, the filter should be cleaned from month to month. Also, the filter should be completely replaced after a few months of use. This will allow your system to generate more air. Additionally, the ventilation using your HVAC system could be impeded. Move your furniture away from your vents. Hot and cold spot could be caused by a leak in your air ducts. This issue results in high energy charges. All these common HVAC problems could be handled by your technician.