Learning About Furnace Upgrades and Repairs

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Learning About Furnace Upgrades and Repairs

Hello, my name is Sarah Patricks. I am going to use my site to talk about furnace options and repairs. There are a wide number of furnaces to choose for your home. The furnaces may kick on using natural gas, electricity, or oil for fuel. If internal components in the furnace stop working, the entire unit will fail to turn on during the next cycle. As a result, the temperatures in your home will drop dramatically, especially at night. I will talk about ways HVAC contractors keep furnaces in working condition. I hope you will use the information on my site to keep your furnace running. Thanks.

Common Problems With AC Blower Motor

The air conditioner (AC) blower motor runs the blower system that sends cool air from the AC into the ducts. Thus, your house won't get the right air and cool if something interferes with the blower motor's function. Below are common causes of blower motor problems. 

Worn or Damaged Belt

Some ACs use a belt to connect the motor and the fan. The motor turns electricity into kinetic energy that drives the belt and runs the fan. The fan's movement over the cogs generates friction that wears it over time. Accumulated fan wear and tear affects its tension, which affects the motor's operation. For example, the fan might slip if it loses some of its tension.

The same thing can happen if something other than wear and tear damages the belt. Causes of belt damage include debris (such as those trapped between the belt and pulley) and damaged pulleys.

Electrical Issues

Electrical problems affect multiple AC operations, including motor operations. Electrical issues include things like overvoltage, blackouts, and short circuits. For example, the motor runs on AC, so it won't operate during a blackout. Overvoltage or short-circuit can damage the motor's windings, causing it to cease operations or operate erratically.

The AC capacitors are also parts of its electrical system. The start capacitor switches on the motor while the run capacitor keeps the motor running. Failure of any of these capacitors will affect the blower motor's operations.

Mechanical Failure

Mechanical motor damage will also affect its operations. For example, a solid object, such as a stone or metal piece, might jam or block the motor, causing mechanical damage. Motor parts also suffer wear and tear over the years, so aging motors might incur mechanical damage. Mechanical damage will affect the motor's operations irrespective of the damage's cause.


The blower motor generates heat during friction. The motor's design and lubrication take care of the heat and ensure it can still run within safe temperature limits. Anything that causes the motor's temperature to exceed its safe tolerances might cause motor failure.

For example, the motor might overheat if it's clogged with dirt and has inadequate ventilation. The motor can also overwork if something, like a dirty air filter, causes the AC to run longer-than-normal cooling cycles.

Regular AC maintenance can prevent some blower motor problems, but malfunctions can occur despite your best efforts. Contact an HVAC contractor to maintain your system or diagnose and repair malfunctions.