
Air conditioner drip pans are meant to last the lifespan of a central air conditioner, which is about 15-20 years. However, several factors, including wear and tear, moisture exposure, and lack of maintenance, can lead to premature AC drip pan damage. The drip pan collects water from condensation, preventing mould and mildew from forming on your floors. It is important to check this area regularly for leaks. If you notice cracks, rust, or corrosion, it may be time to replace your drip pan. The cost of a new drip pan can vary depending on the type of unit and labour rates in your area, but on average, it costs about $30 to $150 for the pan, with additional labour costs ranging from $75 to $150. To replace the pan, you will need to locate the pan, disconnect the drain line, remove the old pan, and install a new one. It is important to turn off the power supply to the system before beginning work.
Characteristics and Values of Replacing the Pan in an Old AC:
| Characteristics | Values |
|---|---|
| Frequency of replacement | Every 15-20 years |
| Cost | $30-$350 |
| Tools required | Pliers, wrench, rags, work gloves |
| Steps | Turn off the power supply, remove the access panel, disconnect the drain line, remove the old pan, slide in the new pan, screw or clip it in place, attach the drain line, close the access panel, turn the power back on |
| Reasons for replacement | Cracks, rust, corrosion, clogs, mold, water damage, leaks |
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What You'll Learn

Turn off the power supply to the AC system
Before replacing the drip pan of your AC, it is important to turn off the power supply to the AC system. This is crucial for your safety and to prevent damage to the equipment. Here is a step-by-step guide to turning off the power supply:
Locate the Power Switch:
First, you need to find the power switch for your AC system. This could be located near the air handler, furnace, or heating and cooling system. It may look like a standard light switch or a small box mounted on the wall. If you are unable to locate a specific switch for the AC, look for a breaker box or fuse box, which is usually located in the garage, basement, laundry room, closet, or on the exterior of your home.
Turn Off the Power:
Once you have located the power switch, turn it to the off position. If there is no dedicated switch for the AC, you will need to find the breakers that control the heating and cooling system in your breaker box. These breakers should be labelled and can be flipped to the off position. If your breaker box is not labelled, you may need to test each breaker to identify the correct one.
Verify Power is Off:
After turning off the power, it is important to verify that the power supply to the AC system is indeed cut off. You can do this by attempting to turn on the heat, cool, and fan settings of the system using your thermostat. If the system does not respond, the power has been successfully turned off.
Reset the Circuit Breaker:
If you need to reset the circuit breaker, locate the breakers marked "heating and cooling" and move them to the "on" position. If the breaker is in the neutral position, turn it off and then back on. Wait for about 30 minutes to allow the system to reset its internal circuit breaker.
Adjust the Thermostat:
Finally, adjust your thermostat to the desired temperature. Turning it to the cool setting will ensure your new drip pan installation is ready for use.
Remember, turning off the power supply is an important safety measure when working on any electrical equipment, including your AC system. It is always better to be cautious and take the necessary steps to protect yourself and your equipment.
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Remove the access panel and locate the drip pan
Before removing the access panel, it is important to turn off the power supply to the AC system. This can be done by flipping the switch near the air handler or furnace. Once the power is off, you can locate the access panel. It may be on the side of the AC unit's housing or on the bottom near the return air vent or duct.
The next step is to remove the access panel. This can be done by loosening the screws with a screwdriver or lifting up the clips that hold it in place. If the access panel is screwed in place, tilt the top of the panel towards you and lift it up to remove it.
With the access panel removed, you can now locate the drip pan. It is usually located underneath the evaporator coils. Check how the pan is attached; it could be via clips or screws, or it may even be welded in place. If the pan is welded, you will need to call an HVAC professional for help.
If the drip pan is attached via clips or screws, you can proceed to disconnect the drain line from the pan using pliers or a wrench. Carefully lift out the old drip pan, as it may be loaded with water or covered in mold. Have an extra bucket on hand to collect any spilled water.
Now that the old drip pan has been removed, you can slide in the new drip pan and screw or clip it in place. Attach the drain line to the new pan, and you're almost done!
Finally, close the access panel and turn the power back on. If there is a second drip pan, it can be replaced in a similar manner.
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Disconnect the drain line from the pan
Before disconnecting the drain line from the pan, it is important to take certain precautions. Firstly, turn off the power supply to the air conditioning system. This can be done by flipping the switch near the air handler or furnace. Once the power is off, remove the unit's access panel to expose the coils and drip pan. Place a bucket underneath the drip pan to catch any water or mould that might spill out.
The drip pan is usually attached via clips or screws, so use pliers or a wrench to disconnect the drain line from the pan. If the pan is held in place by screws, carefully unscrew it, and if it is held by clips, unclip it. Once the drain line has been disconnected, carefully lift out the drip pan. If the pan is filled with water, be cautious to avoid spillage.
It is important to note that some pans are welded in place, in which case, it is advisable to seek the help of a professional HVAC technician. Additionally, if the drip pan is loaded with mould, exercise caution during handling to prevent potential health risks. Regular maintenance of the drip pan can help prevent mould and cracks, ensuring the efficient operation of the air conditioning system.
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Unscrew or unclip the old pan and lift it out
Before you begin to unscrew or unclip the old pan, you must ensure that the power supply to the AC system is turned off. This is a crucial step for safety reasons. Once this is done, you can proceed to locate the drip pan. It is usually found in the indoor unit, underneath the evaporator coils.
Now, you are ready to unscrew or unclip the old pan. First, check how the pan is attached. It could be held in place by clips or screws, so you will need to use the appropriate tools, such as pliers or a wrench, to remove them. Some pans might even be welded in place, in which case, you will need to call an HVAC professional for assistance.
As you work on unscrewing or unclipping the pan, be cautious as it may be loaded with water or covered in mold. Keep a bucket nearby to catch any spillage. Once you have successfully unscrewed or unclipped all the fasteners, carefully lift the old pan out. If the pan is particularly heavy or cumbersome, consider having someone assist you to ensure a safe and smooth removal process.
After removing the old pan, you might want to take this opportunity to inspect the area for any signs of damage, leaks, or clogs. This proactive step can help you address any potential issues that could cause problems down the line. It is always better to be safe than sorry!
Now that the old pan has been successfully removed, you can move on to installing the new drip pan.
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Slide in the new pan and screw or clip it in place
Once you've located the old drip pan, disconnected the drain line, and removed the old pan, it's time to slide in the new one. This is a crucial step in ensuring your AC system operates efficiently and safeguarding your home from water damage and mould.
Before sliding in the new pan, it's important to clean the area and inspect the coils for any damage or issues. Frozen evaporator coils, for example, can cause water to accumulate in the pan, so it's important to address any underlying problems before installing the new pan.
Now, carefully slide the new drip pan into place, ensuring it's securely positioned directly below the coils. You may need to suspend it from the attic or ceiling, or rest it on the furnace until you can secure it. If your old pan was attached with screws, screw the new pan into place, following the same screw holes and ensuring a tight fit. If your old pan was attached with clips, clip the new pan in place, ensuring the clips are secure and properly aligned.
After securing the new pan, reattach the drain line to the pan, and then close the access panel. Turn the power back on and test your AC unit to ensure it's functioning properly.
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Frequently asked questions
Check the drip pan for cracks, rust, or corrosion, especially along the edges and corners where it’s most likely to occur. Other signs include water leaks, water pooling around your indoor unit, and clogs.
First, turn off the power supply to the system. Then, remove the unit's access panel and locate the drip pan. Check how the pan is attached; it could be via clips or screws. Disconnect the drain line from the pan and unscrew or unclip the pan, lifting it out carefully. Slide in your new drip pan, screw or clip it in place, and attach it to the drain line. Finally, close the access panel and turn the power back on.
The cost of a new drip pan can range from \$30 to \$150, with additional labor costs ranging from \$75 to \$150. In total, the cost, including installation, ranges from \$100 to \$300.










































