After a cleaning, you likely don't have a dirty compressor. However, it can still experience several issues like electrical problems, overheating, lack of lubrication, or damaged suction lines.
This can be caused by restricted airflow from a dirty filter (even a new one!), low refrigerant levels, or a malfunctioning fan motor. Signs of frozen coils include warm air blowing from the vents and ice buildup on the evaporator coil, which is located inside the indoor unit.
After replacing the filter, you should wait at least 12 hours before running the system. If the AC is still not blowing cold air, it could signify that you have a refrigerant leak, a damaged condenser, or your entire mechanical system needs maintenance.
The blower motor might be malfunctioning or the fan speed resistor may be faulty, causing the system to only operate at full speed. In some cases, clogged air filters or dirty evaporator coils can also restrict airflow, forcing the AC to compensate by running at high power.
In AC systems, the air conditioner reset button is on the outside unit's lower edge, typically close to the ground. Some models have the reset button located behind the service panel, which may require tools to remove. Reset buttons are usually red or yellow with a clear “reset” label.
If you have a window air conditioner, resetting it is relatively simple. Most ACs have a reset button located either near the power plug or within the control panel on the unit. Simply press this button for a few seconds to reset the unit.
One of the major reasons any air conditioner does not cool the air even after servicing is that one of the major components isn't working properly. Usually, it happens when there is a refrigerant gas leak. You should know that the refrigerant gas isn't used up by your air conditioner over a period of time.
One simple fix for this issue is to replace your air filters. Dirty filters can restrict airflow and cause your AC unit to work harder than it needs to. Another option is to clean your air ducts and vents, removing any debris or blockages that might be preventing the cool air from circulating properly.
One possible reason your AC is not reaching the set temperature is that the thermostat could be dirty. If dirt, dust, or other debris has accumulated within the thermostat box, it can cause the wires to heat up or other issues. Thermostats are cleaned during routine HVAC maintenance to help prevent this from happening.
When you notice that your air conditioner isn't cooling, your first action should be to turn it off. This might seem counterintuitive—after all, you want your home to be cool. However, continuing to run an AC that isn't effectively cooling can cause further damage to the system.
Turning on the AC Too Soon
Wait at least 30 to 60 minutes for the unit to dry. Water and dampness can interfere with the unit's operation and cause electrical components to short circuit.
Many people wonder, “Can a dirty air filter cause my AC not to cool?” The simple answer is “yes.” A dirty filter can create several problems that can hinder your unit's effectiveness.
There are a number of reasons why your air conditioner might be running but not cooling. It could be an issue with the thermostat, the compressor, or the evaporator coils. Or, it could simply be clogged with dust and debris, which is preventing it from working properly.
Let your air conditioner dry for about 24 hours.
Before reassembling and reinstalling your air conditioner, let it dry thoroughly.
First, check your filters and coils for dirt and debris that may be impeding airflow. Once you've cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn't blow cold air, it could be that refrigerant levels are too low.
Your AC might not cool properly due to thermostat issues, an undersized unit, or extremely high outdoor temps—so check those first. Keep an eye on airflow—replace clogged filters every 3 months, and make sure vents and ducts aren't blocked for efficient cooling.
For many of us, 70 degrees is the ideal indoor temperature, but when it is close to 100 degrees outside, your AC unit will be working quite hard to meet these expectations. Consider setting your thermostat at 75 degrees to 80 degrees in your home if the outside temperature is approaching triple digits.
One of the ways is to make sure the air filter is clean. If you find it clogged with debris, clean it with a brush. A popular cause behind an AC that is not cooling is the deficiency of refrigerant or Freon. When refrigerant circulates together with the air, your room will be filled with cool air.
Check these issues when the unit won't kick on: Check the thermostat and adjust the settings if it isn't set to Cool and an appropriate temperature setting to call for cooling. Examine the house circuit breakers for the AC unit and reset any tripped breakers. Check the air filter and replace the filter if it's dirty.
If your air conditioner isn't keeping up with the heat, your air filter may be to blame. A dirty air filter can obstruct the airflow path through the unit. Using a dirty air filter can also cause less energy efficiency and more costly utility bills.
Power down your AC: Turn off your AC unit and unplug it from the power source. This will ensure that you stay safe while working on the unit. Locate the reset button: Most air conditioning units have a reset button located near the outside unit. It is usually a small button located inside a small hole.
WHAT IS THE BEST MODE FOR AC IN SUMMER? In summer, the best mode for your air conditioner is the "Cool" mode, set to a comfortable temperature around 78°F when you're home. This setting efficiently reduces indoor humidity and maintains a comfortable environment without overworking the AC system.