Noises coming from your HVAC system can be alarming if you are not used to them.
- However, these are common, especially for old model units that have not upgraded their technology to automated or digital systems.
For instance, homeowners with central heating and cooling units are probably used to hearing strange sounds from their unit. In most cases, these are indicators of something that needs fixing and are not necessarily alarming. However, first-time HVAC system owners can easily panic and frantically contact their HVAC technician only to discover that it was something they should have let slide. Nonetheless, it is foolish to ignore strange noises and odors from your system. You never know when an issue is serious and needs immediate attention. It is safer to take note of the cranking or banging sounds and monitor it for a few days, especially if you realize that the unit is functioning as usual. It may be a few loosened components that need some bit of tightening to get back to normal. However, having an idea of all the possible sounds and noises can help you troubleshoot the furnace or AC next time. Learn what to expect, and you will deal with the situation in a better manner. Common sounds that are likely to come from your AC include banging noises which often indicate that something is loose in the AC. It could also mean that the blower is unbalanced or that the compressor needs o to be replaced. On the other hand, Buzzing noises may indicate the presence of loose parts, debris accumulation, electrical faults, refrigerant leaks, and a few replacement requirements.