AC and Heating Services

Cooling Crisis: How to Revive Your AC When It Fails to Chill

It’s a frustrating scenario when your air conditioner fails to deliver cool air, especially on the hottest day of the year. But fear not, as this issue can be addressed without breaking the bank on costly AC upgrades or replacements. 

Step into a world of unmatched comfort and refreshment with Air Conditioning & Heating of Houston Co.’s premier air conditioning services. When the scorching heat of summer arrives, there’s no need to sweat it out indoors. Our expert technicians are here to ensure that your air conditioning system is functioning and performing at its peak efficiency. 

In this guide, we’ll explore various reasons behind an air conditioner not cooling your house as expected and provide practical solutions.

Troubleshooting Guide for Air Conditioning Services

When the searing heat of summer sets in, a malfunctioning air conditioning unit can quickly turn your home into an uncomfortable environment. It’s frustrating when your air conditioner runs but fails to deliver the cooling relief you desperately need. 

However, there are several steps you can take to troubleshoot and potentially resolve this issue before seeking professional help:

1. Adjust the Thermostat Settings

If your home feels warmer than usual, check your thermostat settings. Make sure that the thermostat is set to cooling mode. Verify that the temperature setting is accurate and hasn’t been accidentally changed. If the thermostat was set to heat or continuous fan mode, switch it back to cooling mode. Wait a few minutes after turning on the AC before expecting cool air from the registers.

2. Check and Replace the Air Filter

An air filter near or within the indoor air handler assembly is crucial in maintaining efficiency. It captures airborne particles like dirt and pollen, ensuring cleaner air circulation. A clogged air filter obstructs airflow, leading to overheating issues and potential shutdowns. If your thermostat is working correctly, but you still don’t get cold air, turn off the system, remove and examine the air filter, and replace it if needed.

3. Clear the Condenser Unit

The condenser unit, situated outside your house, features a coil with thin metal “fins” that dissipate heat. A blocked or clogged condenser coil can prevent efficient heat transfer and cooling. Airflow obstruction by dirt and debris accumulations between the fins can lower energy efficiency, reduce cool air output, or cause system shutdown or compressor damage. To clean the coil, gently vacuum it or rinse it with a hose.

4. Assess the Heat Pump

If you have a heat pump system, similar issues can arise due to dusty or frozen coils, refrigerant leaks, or compressor malfunctions. Check the thermostat settings, air filter, and condenser unit for any of these issues if your heat pump isn’t cooling as expected.

5. Address Frozen Evaporator Coil

The evaporator coil, part of the indoor AC unit, gets heat and humidity from indoor air. If it’s frozen, it can’t effectively cool the air. Signs of a frozen evaporator coil include frost on the copper refrigerant tubing and insufficient ventilation. In extreme cases, frost can even form on the outdoor unit. If you suspect a frozen coil, turn off the system and allow it to thaw before turning it on again.

6. Detect Refrigerant Leaks

Refrigerant is a crucial component in the cooling process. If there’s a leak, your AC system might struggle to provide cold air, run longer without effective cooling, or even experience compressor issues. A refrigerant leak can result in diminished performance and energy efficiency. If you suspect a leak, it’s essential to have a professional HVAC technician inspect and address the issue.

Final Thoughts

In battling the heat, knowledge is your most potent weapon. By navigating through this troubleshooting guide, you’ve armed yourself with the insights to tackle the challenge when your air conditioner falls short of its cooling promise. Remember, the path to comfort often begins with simple steps, from checking thermostat settings to clearing obstructions in your system. Your home’s oasis of coolness awaits your command, and with the tips provided, you possess the know-how to summon it back to life. Whether it’s a minor adjustment or a professional intervention by our service technicians, your determination to maintain a cool and comfortable environment is the key to unlocking the full potential of your air conditioning system. 

As you venture forth armed with this newfound knowledge, rest assured that you’re well-prepared to overcome any cooling obstacle that comes your way, ensuring your home remains a haven of cool comfort even during the hottest of days.

Are You in Search of Reliable Air Conditioning Services You Can Trust?

In cases where troubleshooting doesn’t resolve the issue, it’s advisable to seek professional help. If you’re looking for reliable air conditioning services, you’ve come to the right place. Air Conditioning & Heating of Houston Co. has served Houston, Texas, for many years. As a trusted provider of AC and heating services, we provide top-notch service for commercial and residential AC and Heating needs. From heating and air conditioning repair to furnace installation, our certified professionals ensure every aspect of your air conditioning repair services is handled meticulously. Contact us today for exceptional service at a fair price that guarantees comfort for years.

Remember, with proper maintenance plans and timely solutions, you can ensure your air conditioning system operates at its best, keeping your home cool and comfortable even on the hottest days.


Why is my air conditioner running but not cooling my home?

There could be several reasons for this issue, such as low refrigerant levels, a dirty air filter, a blocked condenser unit, or a malfunctioning compressor.

What should I do if my air conditioner is not cooling my house even though it’s running?

Begin by checking the air filter and cleaning or replacing it if necessary. Make sure the thermostat settings are correct, and ensure that the condenser unit and evaporator coils are clean and free from debris.

Can low refrigerant be the reason my air conditioner isn’t cooling properly?

Yes, low refrigerant levels can lead to inefficient cooling. If you suspect this, it’s best to call a professional HVAC technician to diagnose and address the issue.

Is there a way to troubleshoot the problem before calling a professional?

Yes. You can check if the circuit breaker for the AC unit is tripped, verify that the thermostat is set to the right temperature, and ensure that doors and windows are closed to prevent cool air from escaping.

What if I’ve tried the basic steps and my air conditioner still isn’t cooling properly?

If the issue persists after trying the initial troubleshooting steps, it’s advisable to contact a qualified HVAC technician. They have the expertise to diagnose and repair more complex problems that might be causing your air conditioner’s inefficiency.


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