Easy Method to Remove Water from Overflow Pan & Unclog A/C Drain Line

Are you frustrated with water pooling in your overflow pan and a clogged A/C drain line? Don’t worry, we have a simple method to help you resolve this issue. In this blog post, we will guide you through an easy process to remove water from the overflow pan and unclog your A/C drain line. With just a few steps, you’ll be able to restore your A/C unit’s efficiency and keep your home cool and comfortable. So, let’s dive in and get your A/C back on track!

Easy Method to Remove Water from Overflow Pan & Unclog A/C Drain Line


As the summer heat intensifies, your air conditioning system becomes a crucial part of keeping your home cool and comfortable. However, one common issue that homeowners often face is a clogged A/C drain line, which can result in water overflowing from the overflow pan and causing damage. In this article, we will introduce you to a simple and effective method to remove water from the overflow pan and unclog your A/C drain line, ensuring that your air conditioning system functions properly.

Tools Needed

To successfully remove water from the overflow pan and unclog your A/C drain line, you will need the following tools:

  • Transfer Pump: This pump is designed to remove water quickly and efficiently. You can find a reliable transfer pump here.
  • 4′ Hose: Ensure you have a 4-foot hose to connect to the transfer pump. You can purchase one here.
  • Milwaukee Top-Off Power Supply: Power the transfer pump with this reliable power supply from Milwaukee. You can find it here.

Step-by-Step Guide

Follow these steps to remove water from the overflow pan and unclog your A/C drain line:

  1. Identify the Overflow Pan: Locate the overflow pan in your air conditioning system. It is usually located near the indoor unit and collects excess water when the drain line is clogged.

  2. Prepare the Transfer Pump: Connect the 4-foot hose to the transfer pump. Ensure that the hose is securely attached to prevent leaks. Place the transfer pump in the overflow pan, making sure it is submerged in water.

  3. Power the Transfer Pump: Use the Milwaukee Top-Off Power Supply to power the transfer pump. This power supply provides sufficient power to effectively remove water from the overflow pan.

  4. Start the Pump: Switch on the transfer pump and allow it to run for a few minutes. The pump will begin removing the water from the overflow pan.

  5. Transfer the Water: Direct the hose that is connected to the transfer pump towards a suitable drainage area, such as a sink or outside. Ensure that the water is being transferred effectively without any obstructions.

  6. Repeat if Necessary: If the overflow pan still contains water, repeat steps 3 to 5 until the pan is empty.

  7. Vacuum the Drain Line: Before using the transfer pump, it is advisable to vacuum the A/C drain line. A vacuum will help remove any clogs or debris that might be causing the blockage. You can use a reliable vacuum pump like the Fieldpiece VP87 Vacuum Pump, available here.

Additional Tips and Recommendations

  • As an additional precaution, it is recommended to use a Fieldpiece MR45 Recovery Machine to recover any refrigerant or gas from the A/C system before attempting to unclog the drain line. This will prevent any damage to the environment.
  • For a more accurate measurement, use a Fieldpiece SR47 Refrigerant Scale to measure the weight of the refrigerant.
  • To ensure a proper connection and prevent leaks, use a reliable Fieldpiece Hose Kit, available here.
  • If you are experiencing leaks in your A/C system, consider using an RLS Refrigerant Press Tool Kit, available here, to make secure and durable press connections.
  • For any brazing needs, the Solderweld Brazing Kit is an excellent option. You can find it here.
  • To accurately measure various parameters in your HVAC system, the Fieldpiece SC480 Meter and Fieldpiece SC680 Meter are highly recommended.
  • For wireless communication during HVAC work, consider using the Fieldpiece Job Link HVACR Charge & Air Kit and the Fieldpiece SM380V Digital Manifold.
  • Protect yourself from external weather conditions while working on your A/C system with the Supco Magnetic Umbrella.
  • Keep your working area cool with the Supco Coolpressor, available here.
  • The Supco Jumper King is an essential tool for quick and reliable circuit testing. You can find it here.
  • Use the Fieldpiece DR82 Leak Detector for accurate and efficient detection of refrigerant leaks. You can purchase it here.


By using a transfer pump and following the step-by-step guide provided in this article, you can easily remove water from the overflow pan and unclog your A/C drain line. It is essential to perform this maintenance task regularly to prevent any potential damage to your air conditioning system. Remember to vacuum the drain line before using the transfer pump for better results. Keep your HVAC system running smoothly and efficiently with the help of Quality HVACR’s recommended tools and equipment.

FAQs (Frequently Asked Questions)

1. How often should I remove water from the overflow pan and unclog the A/C drain line?
It is recommended to check the overflow pan and drain line at least once a month, especially during the summer season when the air conditioning system is frequently used.

2. Can I use any transfer pump to remove water from the overflow pan?
While there are various transfer pumps available in the market, it is advisable to use a reliable and efficient pump like the one recommended by Quality HVACR. Using a high-quality pump ensures effective water removal.

3. Are there any discounts available for purchasing the recommended tools and equipment?
Yes, you can use the promo code “QUALITYHVAC” to save 8% at the TruTech Tools website and 10% at the HVAC Tactical website.

4. How can I stay updated with Quality HVACR’s latest updates and content?
You can follow @qualityhvacr on Instagram to stay connected and receive updates regarding new videos, promotions, and more.

5. How can I contact Quality HVACR for business inquiries?
For business inquiries, you can email qualityhvacrtn@gmail.com.