Ella Walter
Replacing the drain pan in an air handler is a complex task that requires careful consideration. The process involves lifting the heavy air handler, which is connected to pipes and ducts, to gain access to the drain pan. While it is possible to replace the drain pan, it is not an easy job and may require professional assistance. Some factors to consider include the extent of rust and leakage, the configuration of the air handler, and the potential need for specialized tools or techniques to lift the air handler and remove the old drain pan.
| Characteristics | Values |
|---|---|
| Difficulty | Replacing the drain pan of an air handler is not an easy job. |
| Required tools | Bottle jacks, black pipe or other thin but strong pieces of metal, scrap lumber. |
| Required skills | Requires experience with HVAC systems. |
| Drain pan cost | $190 |
| Drain pan replacement cost | $10,000-$12,000 |
| Alternative solutions | Repairing the drain pan with material, putting in a whole new bottom in the drain pan. |
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What You'll Learn
Drain pan rusted due to leaks
A rusted drain pan is typically caused by leaks. The presence of water in the secondary pan indicates freezing, which results in abnormal amounts of water and stress, leading to rust. This can be due to a clogged condensate drain line, a broken condensate pump, or an unclean or clogged air filter. Restricted airflow from a dirty air filter can cause the evaporator coils to freeze, and once the coils melt, the excess water can overflow and drip from the air handler.
If the rusting is severe, you may need to replace the drain pan. This can be a challenging task, as the air handler is heavy and connected to pipes and ducts, requiring it to be lifted by a few inches to remove the old pan and install a new one. However, some people have managed to do this themselves, although it is recommended to consult a professional for assistance.
To prevent rust and leaks, it is important to schedule regular maintenance to ensure your air handler's condensate drain line is clean, free of clogs, and not leaking water. Changing your air filters regularly, about once every 1-3 months, is crucial to prevent future clogging and more serious issues.
If you notice any leaking from your air handler, it is important to turn off your A/C unit immediately to prevent further damage and higher repair costs.
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Lifting the air handler
Planning and Preparation:
Before attempting to lift the air handler, it is crucial to understand the weight and dimensions of your specific unit. You can usually find this information by searching for the model number online. This will help you determine the required tools and equipment needed to safely lift the load.
Tools and Equipment:
Some suggested tools and equipment that can aid in lifting the air handler include bottle jacks, strong metal pipes or rods, scrap lumber, and ratchet straps. Additionally, consider using angle iron, threaded rods, washers, nuts, and bolts for a more secure setup. Ensure that all equipment is rated for the load and always prioritize safety.
Lifting Process:
To gain the necessary clearance to replace the drain pan, you will need to lift the air handler slightly, typically by a few inches. One suggested method is to use bottle jacks to carefully lift the unit. Additionally, consider using pipe or thin but strong metal pieces to gain leverage and support during the lift.
Stabilization and Support:
For added stability and support, consider placing 2x4s beneath the air handler and securing them with lag bolts and screw eyes. You can then attach ratchet straps to lift the unit. Alternatively, you can use angle iron and threaded rods to create a more permanent suspension system, as described in another source.
Professional Devices:
If you are uncomfortable with the DIY approach, consider investing in professional devices designed for lifting air conditioning units. For example, the EZ-AC Lift is a device that assists in lifting A/C units to the roof, eliminating the need for large cranes and saving time and money.
Remember, always prioritize your safety and the stability of the air handler during the lifting process. If you are unsure or uncomfortable with any aspect of the task, it may be best to consult a professional for assistance.
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Cost of replacement
Replacing an air handler drain pan is not an easy job, as the air handler is heavy and connected to pipes and ducts. However, it is possible to replace the drain pan yourself, and doing so can save you money.
The cost of replacing an AC drain pan ranges from $200 to $600, depending on the type and material of the pan. The price can increase depending on the location of the unit, with replacements in attics costing at least $1200.
If you choose to replace the drain pan yourself, you will need to lift the air handler by about 3 inches to access the pan. This may require the help of several people or the use of tools such as bottle jacks and pipe. Once the air handler is lifted, you can cut one side of the pan and pull it out, then install the new pan.
In addition to the cost of the pan itself, you may also need to purchase new ducts and pipes, as well as any tools required for the job. It is important to ensure that you have the necessary skills and knowledge to perform the replacement safely and correctly, as mishandling certain components can cause severe illness or death.
If you are uncomfortable with attempting the replacement yourself, you can call an HVAC professional to perform the replacement for you. This will incur additional labour costs, but it may be worth it for the peace of mind that the job has been done correctly.
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DIY vs calling a professional
Replacing the drain pan in an air handler is not an easy job. The air handler is heavy and connected to pipes and ducts, and it must be lifted to remove the old pan and insert the new one. Some people have managed to do this themselves, but others have found it challenging and have called in professionals.
If you choose to attempt this as a DIY project, you will need to gain access to the drain pan by removing any panels or ducts blocking it. You will then need to lift the air handler by about 2 to 4 inches to slide the old pan out and the new one in. This may require cutting one side of the pan. You can then use bottle jacks, black pipe, or another thin but strong piece of metal to lift the air handler. You may also need to screw on a piece or two of scrap lumber to create a base.
However, this process can be complex and time-consuming, and there is a risk of causing further damage if not done correctly. Some people have found that they needed to call in professionals with special tools to lift the air handler and reshape the refrigerant tubing without causing worse problems. Additionally, in some cases, it may be more cost-effective to replace the entire unit rather than just the drain pan.
When deciding whether to attempt this as a DIY project or call a professional, consider your level of expertise, the time and resources you are willing to invest, and the potential risks and costs involved. If you feel confident in your abilities and have the necessary tools and resources, you may be able to successfully replace the drain pan yourself. However, if you are unsure or concerned about causing further damage, it may be best to consult a professional for assistance.
Overall, while it is possible to replace the drain pan in an air handler as a DIY project, it is important to carefully weigh the benefits and risks before proceeding. For some, calling a professional may be the best option to ensure the job is done safely and effectively.
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Drain pan requirements
Replacing an air handler drain pan can be challenging due to the weight of the air handler and its connections to pipes and ducts. While it is possible to replace the drain pan, it may require lifting the air handler by a few inches to gain access to the old pan and install a new one. This might involve using tools such as bottle jacks, thin but strong metal pieces, or lumber to create a base for support.
Regarding drain pan requirements, an auxiliary drain pan is typically required when the air handler is located in an area where a leak could cause water damage. In such cases, the drain for the auxiliary pan must lead to a visible location, allowing the draining water to be easily seen. Alternatively, a water level detection device must be installed.
In some cases, a float switch installed in the secondary drain port may be allowed by an inspector instead of a drain pan. However, this may vary depending on local codes and regulations. It is always advisable to consult with a professional HVAC technician to ensure compliance with safety standards and local codes.
Additionally, when installing a vertical air handler, it is generally recommended to set it on a supply plenum with the duct coming from the side, rather than having the duct come straight down through the floor. This facilitates the use of an auxiliary pan and helps prevent potential water damage.
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Frequently asked questions
Yes, it is possible to replace the drain pan in an air handler. However, it is not an easy task and may require the help of professionals.
To replace the drain pan, you will need to lift the air handler by a few inches to gain access to the old pan and remove it. This may require the help of a few people or specialised tools. You can then install the new pan and reconnect the air handler.
Drain pans typically need to be replaced when they are heavily rusted or have developed holes, which can cause leaks. If the rusting or leakage is minimal, you may be able to repair the pan without replacing it.
