Dirty Air Handler Blower Fan

It s important to note that weak airflow can also result from dirty or leaky ducts or a clogged filter.

Dirty air handler blower fan.

A dirty blower wheel will also contribute to a high electric bill. A dirty filter restricts the air flow into your hvac systems air handler. If you notice your gas furnace is short cycling turning on and off frequently the culprit may be a dirty blower wheel. This common problem can lead to higher energy costs and expensive repairs.

This happens most often in old units that have not been receiving proper maintenance. The next most common problem that can occur with an air handler is a failure of a blower motor whether it be the blower motor or something else that causes the blower motor to fail. So if your air handler looks like the one below try wiping the blades carefully with a dry towel or toothbrush. It could be a bad relay control board run capacitor or the blower motor itself.

Luckily this is one of the easiest problems to repair. If your blower motor is dirty or has a bad capacitor you can call in an hvac technician to fix the problem. This restricted air flow places additional strain on the air handler fan motor and could over time burn out the motor and cause your system to overheat and ultimately fail. Having a dirty blower wheel will make your hvac system work harder and if not addressed eventually cause your ac system to stop working.

A dirty air filter is the 1 reason for hvac system failure. Possible cause dirty air conditioner blower the most common root problem underlying a frozen air conditioner is a dirty air conditioner blower that s clogged and congested with dust and dirt. Similar to a clogged filter dirt on the blades of the air handler fan will decrease cold airflow over the heat exchangers resulting in the same blower on blower off pattern. That a dirty blower fan reduces the blower assembly air flow rate increasing heating and cooling costs and sometimes leading to actual system operating failures such as frost build up on air conditioner coils that forms not just frost but solid ice if the air flow rate across even a clean cooling coil is just too slow.

When these air exchanges can not happen successfully because a dirty blower wheel is impairing air flow your system will fail. Check for a dirty air handler blower fan.