Initially, air conditioning units in vehicles were considered a luxury, but today, virtually all new cars come equipped with an AC unit. The air conditioning system is part of Toyota’s comfort features. It removes heat and humidity from the vehicle’s cabin, replacing the warm air with cool and dry comfort to you and your passengers.
The AC unit consists of several components, including a compressor, condenser, evaporator, receiver-dryer, and an expansion tube. These components all work in concert for the system’s effective functioning, and all have varying lifespans.
One of the most common problems drivers usually experience indicating an issue with the air conditioning unit is hot air from the vents. Keep reading as we discuss the possible cause why your air conditioning unit is blowing hot air.
Causes of Hot Air from the Air Conditioner Vent
Having your air conditioning unit fail during the brutal summer heat is not something you want to deal with. Discussed below are the possible causes of the problem:
Failed A/C compressor
The compressor is one of the most critical components in the air conditioning unit. It circulates the refrigerants through the system, causing the cooling of the air. A failed compressor will not circulate refrigerants through the system, resulting in hot air circulation in the vehicle cabin.
The refrigerant circulates through the system, expanding and contracting to remove heat and humidity from the cabin. If there is a leak within the system, the refrigerant escapes into the atmosphere. When the coolant escapes from the system, it impacts the proper cooling of the air, causing the release of hot air from the vent.
Unlike oil or coolants, you may not see any signs of leaks which makes self-diagnosing of refrigerant leaks somewhat tricky. Hence, you will need the service of a professional to help inspect the system to ascertain that the hot air from the vent is due to refrigerant leaks.
A perfectly-functional air conditioning unit may fail due to a blown ventilation fuse or bad relay. The ventilation fuse supplies power to the blower motor, circulating the air through the vent. A failed ventilation fuse, frayed wires, or bad relay could hinder the energy supply to the blower motor, causing the release of hot air from the vent.
The compressor is run by a belt attached to the engine crankshaft. Over time, the belt wears down and fails, consequently hindering the functioning of the compressor. The result of a failed compressor is the release of hot air from the air vents.
Clogged condenser and bad fan
The condenser is another crucial component required for the effective cooling of the unit. It acts as a heat exchanger, which reduces the temperature of the refrigerant during the condensation process. A clogged or broken condenser would hinder the efficient cooling of the vehicle air conditioning unit, leading to the release of the hot air into the vehicle cabin. Weak fan rotation can also impact the proper functioning of the condenser.
Stuck blend air door
The blend door actuators are not something you often hear of. It controls the temperature and flow of air in your vehicle. The failure of the actuators could impact the heating or cooling capacity of your air conditioner. You may experience hot air blowing from the vent depending on the side with the faulty actuator.
Hot air blowing from the vents indicates that something is wrong with your Toyota’s air conditioning unit. Since the issue could have resulted from a host of causes, it is best to have a professional examine the problem for proper diagnosis.
Franklin Automotive for your Toyota Repair and Maintenance!
Half of the time, the hard truth is your vehicle’s air conditioner faces such problems because it does not go through simple maintenance. Not to worry! Franklin Automotive can help provide preventive air conditioning service to extend the system’s service life.
If you’re looking for a service center in Birmingham, AL, to fix your car air conditioning problems, visit us today at Franklin Automotive. Our certified technicians have years of experience working on Import vehicles and will get the job done right! Please call or visit us today to schedule your next appointment.