When the pressure in your AC unit is too high, it can make you feel as if you are breathing through a straw and your throat will constrict, making it difficult to speak or swallow. This is because the air pockets in your nose and throat are very small and the air is moving too quickly for you to breathe easily. To prevent yourself from breathing through your nose, try turning off all of the vents and only using one register of AC power at a time.
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Importance of the AC Readings
Air conditioners are the most utilized thing in the summer to keep everyone cool and remove the heat from the building. Whereas in winter they are used to provide heating and prevent uncomfortable cold. So, in order for the air conditioners to perform their function effectively, the level of air pressure inside should be maintained in a normal range. Otherwise, there will be unnecessary pressure on the walls and components of the Ac unit and it may cause great damage.
In this article we will discuss about ac pressure too high in detail. We will provide accurate information about what affects air conditioner pressure and how to solve it?
Reasons Why Your Car AC Too High
The air conditioning system in your car is dependent on refrigerant, which is a gas. The gas requires the support of small oil molecules to flow through the system, and it’s only these very small amounts of oil (or lubrication oil) that keep the system working effectively. Without it, all the car’s systems will not work.
- Worn-Out Air Filters
Some people replace their air filters with the incorrect size, while others simply do not change the filter regularly. A clogged air filter will reduce airflow to the engine and cooling system, leading to higher pressure inside your AC unit. Dirty air filters restrict airflow and increase internal pressure and can cause damage to your AC unit’s compressor.
- Dirty System or Clogged Vent
The AC system components must be kept clean to ensure proper performance. It is essential that the condenser’s drain pan is periodically emptied and cleaned to maintain a level of coolant above the antifreeze protection level. It is also very important to properly service your car AC system regularly, as over time oil will thicken and may become sludgy, leading to higher pressure inside the AC unit.
- Defective AC Compressor
When you have AC overheating, your first and most important step is to get your car AC compressor checked. The compressor is the heart of the system, and should be replaced if it has a leak or is not working properly. Check the condition of your evaporator and condenser coils regularly for any signs of damage or wear, as this might indicate that your compressor is on its way out. For effective AC repairs the compressor should be replaced by a professional AC mechanic.
- Defective Thermostat
The air conditioning system in your car is tightly controlled by a thermostat. This device helps to maintain an ideal temperature inside the car and tries to switch off when the temperature setting has been reached. A defective thermostat will not be able to regulate the temperature effectively and lead to too much inflation.
- Incorrect Air Filters
The air filters are usually disposable parts and should be replaced at regular intervals. The replacement of this part may not be required each time you do a road trip, sometimes it is convenient to simply clean the dirty one. However, a dirty filter will restrict airflow and increase internal pressure in your car’s AC system.
Problems with AC Pressure
Several factors can increase the pressure inside your unit such as people in the room, outside temperature, combustion appliances and water leakage. In addition, the design of the AC system also has an influence on air-pressure.
- Room Temperature
The AC unit has two pressure settings. The first is the high pressure setting and the second is the low pressure setting. The high and low settings also have a range of settings to accommodate various room temperatures. In most cases people think that they set their air conditioner to high so that it doesn’t take too long to cool down the room but this is not true, high air-pressure allows higher airflow which means that you will spend more money on electricity.
- Others Appliances in the Room
When you have other appliances such as hair dryer, microwave ovens or fans in the room, their motors and compressors will produce noise which prevents the cool air from moving smoothly. These noises will also increase your air-pressure. So, when possible you should try to turn these other appliances off.
- Outside Temperature
Weather conditions are likely to have an effect on your air conditioner’s performance and overheating is quite a common problem. When it is hot outside, you will need to leave the air conditioner on continuously. As a result, the pressure inside the air conditioner increases and this in turn causes higher electricity bills. So, if you can live with high air-pressure inside your AC unit, you may try to turn off its cooling default option on the thermostat when there is no need for cooling ventilation. In addition, you should also look at getting an insulated window for your home which will block of heat coming in from outside.
- Water Leakage
When there is a leakage in your system, it will also increase the pressure inside your AC unit. Unless the leakage is severe then no problem occurs but medium to small water leakages can gradually cause damage to your unit. Similarly, If you have a central air conditioner and moisture or drain line are not installed properly; ice dams can occur on the roof of your home and may push water into your AC unit which can cause over pressurization.
- Indoor Unit Design
Just like your car, your AC’s compressor needs oil to work. The unit’s evaporator coil is also very important as it holds the cold air and sends it back into the house. If you find that the coil is damaged in any way, then there will be no flow of air inside the house and this will increase pressure in your unit.
- Location of AC Unit
The area where you have installed your AC plays an important role on its performance and functionality. If your AC is installed in one particular room and there are a lot of people who pass that room while using it, then the performance of the air conditioner will be affected and this will increase the pressure inside your unit. However in most cases, it is recommended to locate AC units away from people with little noise and other electrical appliances which may reduce pressure.
Condenser Fan Problems
- If You Have A Central AC Unit
In some cases, a central air conditioning unit may develop excessive noise while running. This is because, the fan in the unit is always running either due to high temperature or a heavy load of air inside the room. The fan requires more power than an individual room air conditioner and thus it becomes very noisy when it is constantly on. You can fix this problem by buying a fan motor and installing it in your central AC unit that will help you in avoiding noise.
- Broken Condenser Fan Motor
A broken condenser fan motor may also cause excessive noise during the operation of AC unit. The fan uses rotating blades to circulate air inside your room and thus it is connected with a small motor which rotates it. During normal operation, the blades are connected to the motor but if there is something wrong with the motor, it will not rotate properly and as a result, your noise problem becomes worse.
- Loose Fan Blower Motor Connection
Your AC unit may develop excessive noise when the blower motor is loose. If the blower blades are strong, they will also push air inside the unit and if there is a problem with its connection to the motor then it will become noisy during operation. In addition, this problem can also be solved by using a cable to connect the motor and blower blades.
- Open Blower Motor Vent or Fan Motor Assembly
Some AC units have problems with their blower motor vents and their fan motor assembly. If one of these vents is broken or has been opened on purpose then it will prevent air from entering the unit. In addition, if one of the fan motors is damaged, then it will also hinder air circulation which makes your unit become noisy while in operation. If your unit has both of these open then it is important to fix them.
- Loose Blower and Fan Motor
This problem can occur when the motor is not connected properly to the blower blades or if there is a problem with the motor ignition system. The blades rotate inside the unit and push air inside while one of the blades are loose or it has got bent out of shape, it will not be able to rotate properly making your AC unit noisy during operation.
Problems with the AC System
Continuously running the AC unit may cause a number of problems with your unit. The AC system is very important for your home’s air circulation but if you are not taking care of it properly, then their performance will be affected which in turn will lead to many problems.
- Vacuum Leaks
The air conditioner uses the refrigerant inside your home to cool and thus it needs refrigerant to work properly. However, excessive use of the AC unit will cause over usage of refrigerant and thus it may leak inside your house. These leaks can cause problems with the electronic part of your air conditioner as well as other appliances.
- Dumping Syndrome
In short, “Dumping syndrome” occurs when refrigerant gives off a bad smell which is harmful to the human body because it contains sulfur. This syndrome can lead to many diseases and it has been reported to kill more than 100 people. The symptoms of Dumping syndrome are heart problems, skin rashes, eye infections, nausea and other problems.
- Unit Runs Constantly
In some cases, it happens that your AC unit runs continuously without any kind of break for more than 20-30 minutes. This may cause the motor in your unit to wear out quickly which may be difficult to replace or repair. This problem can be solved easily by cleaning the condenser coils of your AC unit.
- A/C Clogs
One of the most common problems with your AC system is clogging. The coils of your AC unit may become clogged due to excessive use or improper maintenance. This problem will not only cause noise in your unit but it also causes many other problems like freezing or a decrease in performance. It is recommended that you clean your AC annually to avoid this problem.
- Leaking Gas Compressor Unit
When your gas compressor unit leaks, it will lose refrigerant from the system and this will not only cause noise in your AC unit but also cause damage to other appliances and electronic parts in your home. Thus, it is recommended that you use a service of professional technicians to take care of this problem.
- Holes in the Condenser Coil
The condition of your condenser coil may become dirty due to constant use or improper maintenance which in turn may lead to many problems with your AC unit. Some of these problems are clogging, holes in the coil, and rust which makes your AC unit noisy. In addition, it also causes decreased performance of your AC system.
Problems with the Refrigerant Gas
Problems with the refrigerant gas can also cause noise in your air conditioner because they dissipate excess pressure inside your home. When this happens, the gas will expand which leads to a decrease in its pressure and therefore leads to a reduction in noise.
- Too Much Refrigerant
You should check the amount of refrigerant that is stored in your AC unit. If it is not able to hold all the refrigerant gas then it will lead to an increase in noise inside your home. If the pressure inside the AC unit is too high, then you can use a vacuum pump to reduce its pressure which will make your unit silent again.
- Too Little Refrigerant
If the amount of refrigerant gas in your AC unit is very little, then it will lead to a decrease in pressure inside your home which may cause an increase in noise. In addition, this problem also decreases the performance of your AC unit because it will not be able to create cool air inside the house.
- Too Much Freon
If your AC system has excess freon then it can also make your air conditioner noisy. The freon will increase the pressure inside your unit which will create more noise.
- Too Much Oil Viscosity
Oil viscosity is another thing that can make your AC unit noisy. When the oil viscosity is high, it may clog some of its parts which will make your air conditioner noisy while in operation.
- Low Oil Level
If the oil level in your air conditioner is too low, it will lead to noise inside the air conditioning system because there will be some friction between two metal parts which will create a loud noise.
Problems with Other Parts of the AC Unit
Some of the problems that cause noise in your AC system include a loose fan motor, loose housing parts or clogging which are closely related to each other. If all these problems happen at the same time then they may make your AC unit noisy while in operation.
- Loose Fan Motor Vibration
The blades of the fan are made of aluminum and there are paddles inside the motor which will move them. When the blade is loose, it will create a vibration noise inside your AC system and thus you will be unable to hear any other sound while in operation. In some cases, loose screws in the blower housing can also make your AC noisy.
- Loose Parts
Worn out or loose parts of your AC unit can also make it noisy. If the screw that holds the blower fan housing to the vibration isolation mount is loose, then it will lead to a noise inside your AC while in operation.
A clogged coil will cause many problems with your AC system such as, freezing and over temperature. All of these issues will create heat that can make your unit noisy because it has to work harder to cool your home.
- Damp Clothes Dryer Vent
A sweaty woman who has just washed clothes can cause a lot of problems with the dryer vent. The usual problem that happens is that one of the electric wires breaks which leads to an electrical short and the motor inside it will work harder than usual and make a louder noise than normal when running.
- Burning Smell
Burning smell inside your AC unit is a sign that something is wrong with your AC compressor. This may mean that something has gone wrong with the motor inside the compressor or a fan is broken and it is not working properly which may lead to the burning of some of its components.
- Broken Motor Brush
If there are teeth missing from your motor brush, then it will cause a lot of problems such as, noise, vibration and malfunctioning of the system.
System Blockage and Restrictions
System blockage and restrictions are also important problems that can lead to noise in your air conditioner. It happens when the airflow from your unit is restricted and thus the parts of the AC unit cannot do their operations properly which leads to an increase in noise. These kinds of problems may be caused by some dirt, debris or a fly which is stuck on top of the compressor or a clog in the piping that is leading to restriction.
Dirt and debris can cause many problems such as, lack of cooling and over temperature which can lead to the accumulation of heat inside your AC unit which will lead to a higher level of noise.
- Metal Objects in the Vent Pipes
A piece of metal, for example, a key, can prevent air from entering the system and thus it will restrict the airflow causing an increase in noise in your AC unit.
- Bird Nest
Bird nests can also cause many problems such as, lack of cooling and over temperature because they are made of paper which can make your AC unit very hot. In addition, they can also restrict the airflow inside the system which leads to a decrease in air flow and this makes you hear excessive noise. To solve this problem, you should take help from an air conditioner technician to clear out the inside of your AC unit.
Trees near your house can also cause problems with your AC unit. They can cause issues such as, debris, bird nests and leaves that fall into the ventilation system which leads to restriction of airflow and this leads to an increase in sound level inside the system
- Dryer Vent Clog
If you have a dryer vent clog then it can also make your AC unit noisy because it restricts the air movement inside the system which causes overheating and an increase in noise from the fan and compressor.
- Chimney Stack
If you have an old chimney pipe, then it can cause problems with your AC unit because the joints may be loose or they may have cracks or holes which can lead to restriction of airflow and it will increase the level of noise inside the air conditioner.
- Exhaust Ducts
If you have a duct that is not well insulated, then there will be more noise than usual. To solve this problem, you should ensure that the ducts are properly constructed, insulated and sealed.
- Metal Roof
If you have a metal roof, then it is the best way to block dirt from getting into your AC unit. However, if there are holes in your metal roof then it can cause many problems such as, overheating and an increase in noise which will make your air conditioner noisy while in operation.
- Roof Tiles
It is important that metal roof tiles are properly installed on top of your AC unit. If they are not, then it can result in issues such as, making noises and restriction of airflow which will cause an increase in noise.
There are a number of reasons behind noise in your AC unit, and the most common ones are covered in this article. It is recommended that you should get help from a professional air conditioner technician to solve these kinds of issues. You will be able to find many AC repair companies on the internet, and you can contact them to help you out.