Air conditioning repairs can be expensive, so homeowners should make sure to keep up with routine maintenance appointments. These will ensure that all components are functioning properly.

Strange noises or smells indicate AC problems that require professional attention. Also, puddles under the unit can signify that there are leaks and that it needs to be recharged. Contact Air Conditioning Repair Round Rock TX for professional help.
Air conditioners use refrigerant to absorb heat from the house and move it outside, but if you have a leak, the refrigerant won’t be able to do its job. Leaks can cause your system to work harder than it should, resulting in higher energy bills and cooling inefficiencies. It can also be dangerous to your family’s health if left untreated.
There are a few signs that your refrigerant is leaking. The most obvious is that the air coming out of your vents doesn’t feel cool, though warm or even hot air could be the result of other problems. Another sign is that your air conditioning is running but not cooling the house, which could be due to a number of problems, including dirty filters or ductwork issues.
If you suspect that your AC is leaking refrigerant, a professional should inspect the system to determine where the leak is occurring. Possible leak areas include service valves and caps, compressor seals, evaporator coils, or anywhere a rubber line is crimped to metal lines. Your technician may also use a dry nitrogen test to detect the leak. This involves injecting the air conditioner with a small amount of dry nitrogen, which will bubble and expand in the presence of a refrigerant leak.
Once the leak is repaired, your air conditioning technician will evacuate and vacuum the system. This process removes any air or moisture that can affect performance and ensures that your refrigerant levels are as close to the manufacturer’s specification as possible. Then, your technician will reinsert the refrigerant and conduct a thorough visual inspection to ensure that there are no additional leaks.
If you’ve been having trouble with your air conditioning and believe that it might be leaking refrigerant, don’t hesitate to call Lexington’s AC repair experts! We’ll help you keep your cool and save money by detecting and repairing any leaks in your system. We guarantee our repairs, so contact us to schedule an appointment. And if you aren’t satisfied with the work we do, we’ll give you your money back. That’s the Lexington guarantee!
Clogged Evaporator Coil
Dirty evaporator coils can have far-reaching consequences for your HVAC system. Among other things, the coils are where the refrigerant absorbs heat from the indoor air to produce cooled air for your home. This makes them susceptible to clogs and other problems. However, regular cleaning and maintenance can help homeowners avoid these issues.
One of the main reasons that evaporator coils can get dirty is that they often aren’t properly cleaned or maintained during routine AC maintenance. As the air passes over the coils, it picks up dust and other debris, which can slow down the rate at which the coil absorbs heat. Over time, this can significantly reduce the cooling capacity of the system.
Additionally, a dirty evaporator coil can lead to water accumulation and mold or mildew growth. These create distinctive musty odors that are released into the air when the system circulates cooled air through your home. This can exacerbate breathing difficulties for those with respiratory issues and allergies.
If a problem with the evaporator coil does occur, it may need to be replaced. A professional can determine if this is the case and provide you with an estimate for the repair. If the cost is too high, it may make more sense to consider a new AC system replacement.
Another common cause of clogged evaporator coils is a clogged drain line. This can happen for several reasons, including improper installation and poor maintenance. Air conditioning system installers must ensure that the line is sloped properly to encourage proper drainage. It should also be checked regularly to ensure that it’s not blocked or clogged with debris, especially by algae.
When these problems arise, it’s important for property owners to take action immediately. The longer the evaporator coil is clogged, the more the AC will cycle on and off, leading to higher energy bills and less efficient operation overall.
Regularly changing the air filter, ensuring that ducts are well-sealed and insulated, and performing other routine maintenance can help prevent problems with the evaporator coil. It’s also a good idea to contact a professional for routine AC maintenance, which includes inspection and cleaning of the coils.
Failed Contactor
In an AC system, the contactor acts like a switch that opens and closes the electrical circuit that sends power to components such as the compressor and fan motor. When your thermostat calls for cooling, the contactor provides power to those components until they reach your set temperature, then it shuts them off to preserve energy and prevent overheating. Over time, frequent starts and electrical surges can cause the contactor’s internal contacts to corrode or fuse. Signs of a failing contactor include clicking sounds, the AC system continually cycling on and off, and a burning smell.
Another common symptom of a failed contactor is a humming or buzzing sound that occurs when the system is running. This is a sign that the electrical current is not flowing properly between the contactor and compressor/fan motor. In most cases, a failing contactor will also keep the fan motor inactive when the thermostat signals for cooling.
A failing contactor can produce excess heat that leads to visible burn marks or charring on the unit. This can result from arcing between the contactor’s contact points or from corrosion that occurs due to moisture exposure. If left unaddressed, the damage can lead to overheating of other AC components and even permanent contactor failure.
While a faulty contactor can be difficult to diagnose on your own, a professional technician can test the device by turning it off and disconnecting the wires from the coils. They can then visually inspect the contacts for signs of deterioration, such as pitting or melting. If they see that the contactor is melted, it should be replaced as soon as possible to avoid further damage and potential failure.
A faulty contactor can be an easy to fix problem if homeowners know what to look for and act quickly when they spot these symptoms. It is important to familiarize yourself with different air conditioning mechanisms so that minor problems would be addressed promptly. This would ensure that they do not escalate into bigger air conditioning repairs or even system failure. In this way, you can avoid unnecessary expenses and enjoy the best home comfort possible for many years to come.
Failing Blower Motor
A failing blower motor can be one of the most serious issues a homeowner faces. The blower motor is responsible for forcing the now-heated air out of the evaporator coil and through ductwork into rooms across the home. Without a working blower motor, your entire heating system will fail to work. If you think your blower motor is failing, there are some simple tests that can be performed to determine if it’s time for a replacement.
If you notice an electrical burning smell, it’s a sign that your blower motor is overheating. This is a serious issue that should be dealt with immediately to prevent a possible fire.
Another clear sign of a failing blower motor is loud sounds coming from the unit. This can include screeching or squealing, and it often indicates that the motor has bad bearings. You may also hear rattling noises, which can indicate that there is a loose or broken part in the unit.
The power supply wires that connect to the blower motor are easy to test with a multimeter. Simply disconnect the blower motor from its power source, then attach the leads of your meter to the capacitor terminals and set it to measure capacitance. You should get a reading that is close to the value on the capacitor label.
You can also perform a simple visual inspection of the blower motor to see if any parts are damaged or loose. Look for frayed or corroded cables and connectors, as well as bent fan blades. If you see any of these signs, contact an HVAC technician to discuss your repair options.
Another sign that your blower motor is failing is if the HVAC controls become unresponsive or only partially functional. This can occur when the motor fails to start, or it may stop responding to commands from the thermostat or the blower control module. If the blower motor isn’t turning on at all, it can be diagnosed with a multimeter and a jumper wire (a battery connected to the power wires and a jumper connecting the grounding cable to a terminal on the motor). For variable speed motors, a scan tool will be needed to check the speed control module.