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.
Dirty air handler blower fan.
It could be a bad relay control board run capacitor or the blower motor itself.
If you notice your gas furnace is short cycling turning on and off frequently the culprit may be a dirty blower wheel.
A dirty filter restricts the air flow into your hvac systems air handler.
This common problem can lead to higher energy costs and expensive repairs.
When these air exchanges can not happen successfully because a dirty blower wheel is impairing air flow your system will fail.
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.
A dirty air filter is the 1 reason for hvac system failure.
Damage caused by a dirty blower can be costly to fix but can be prevented too.
Having a dirty blower wheel will make your hvac system work harder and if not addressed eventually cause your ac system to stop working.
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.
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.
If your blower motor is dirty or has a bad capacitor you can call in an hvac technician to fix the problem.
It s important to note that weak airflow can also result from dirty or leaky ducts or a clogged filter.
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.
Dirty a c or heat pump blower units dirt blocked air conditioner air handler fans we also discuss how to improve indoor air quality by installing a cascaded air filter system at the air conditioning or heating system air handler to provide optimal air particle filtration for people with asthma allergies or indoor mold or other iaq concerns.
Luckily this is one of the easiest problems to repair.
This happens most often in old units that have not been receiving proper maintenance.
A dirty blower wheel will also contribute to a high electric bill.
