Call us today for fast, reliable air conditioning repair. Schedule an AC tune-up with King every spring and have one of our technicians look at your refrigerant levels ahead of summer. In the simplest of terms, air conditioners and heat pumps, in their summer setting are able to cool down your home by moving heat energy from one place to another. The evaporator coil contains refrigerant that runs inside and outside in a constant, contained loop.
As the refrigerant enters the inside portion of its circuit, the molecules expand, cooling down the line and allowing it to absorb heat energy from the air in your home. It then returns to the outdoors, where the condenser condenses those same molecules, causing the line to heat and expel that heat energy into the outdoor air.
This happens over-and-over again until sufficient heat energy is removed from your home to bring it down to the temperature where things are comfortable. In the event that heat energy is not able to be absorbed into the refrigerant, things start to go wrong. Most often, this occurs because the return air—the heat energy-filled air inside of your home—is unable to get to the line.
As a result, the refrigerant in the line begins to get colder with no heat to absorb. To thaw a frozen air conditioner can take several hours or even the entire day! Make sure to schedule a repair or inspection service for after the unit has thawed, as there is little a technician can do when a unit is frozen.
Contact us today to get on our schedule! You can find your evaporator coil in your indoor air handler system. See this energy. If dust and dirt build up around the evaporator coils, which transfer refrigerant to the heat pump, it will put extra strain on your system to condition the air, putting your evaporator coil at risk of freezing. The coils need to be cleaned periodically for proper heat absorption to occur; otherwise, the coils may just freeze over.
This is another reason why it is important to schedule annual professional maintenance — your system will be cleaned and inspected in order to avoid potential problems like this one. Better yet, join a home maintenance plan so you never forget this important home maintenance task. Schedule professional HVAC maintenance once a year to avoid these sorts of problems.
Watch this video and learn how:. If you do choose to clean your evaporator coils yourself, make sure you are using the proper equipment!
Although leaks coming from regular wear and tear are common, they sometimes go unnoticed for long periods of time. Running your HVAC system with low refrigerant levels creates unnecessary strain on your system and can cause ice to build up on your evaporator coils. There really is not DIY way of doing this, so your best bet is to call in a professional to inspect your system for leaks and restore your refrigerant levels.
You may have a frozen evaporator coil because there is improper airflow from your blower. This can happen for a number of different reasons, but most often involves a dirty air filter. For optimum efficiency, we recommend replacing your air filter every 30 days during peak use.
A good test to see if you need to replace your air filter is to observe if light can shine through the filter or not.
Set phone and calendar reminders as an extra precautionary measure to remember this important home maintenance task.
The other thing you should check for is proper airflow through your supply and return vents and registers. Once the ice is completely melted away, you need to dry the evaporator coils. You can use some paper towels, or let the parts dry out in the sun if in direct sunlight. Restore the power to your system and turn the blower on. Run inside and set your thermostat to only run the blower or fan, depending on the model of the thermostat you have.
This circulates air around and through the coils to dry them quickly. Once the coils are dried thoroughly, your system should resume operating normally. Take these measures to keep your HVAC system from freezing over.
The leading cause of a frozen HVAC system is a dirty air filter. The air filter cleans the air circulated into your home. As your AC system runs throughout the summer, the filter catches dirt, pollen, dust, and other allergens. This can restrict airflow and could lead the HVAC coils to freeze. Typically, we recommend you check your filter monthly. Change it as needed. For most folks, this is one to every three months. Filter changes vary based on factors, such as:. It is just good practice to have an annual air conditioning maintenance service call.
Leave it to our technicians and keep yourself away from handling them if possible. Obstructed airflow can keep the coils from properly cooling and lead to a frozen AC unit. Similar to a clogged filter, blocked vent returns and registers prevent adequate airflow to and from the system. This causes your system to work harder without a way to release the cooled or heated air. Another good practice is to walk around your home and check that indoor air vents and registers are clear from any obstructions.
In some cases, the ductwork is installed well but the wrong size for your house or the capacity.
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