condensate pump not pumping water out

Why Condensate Pump Running But not Pumping?

Investing in an air-conditioner or HVAC is a long-term investment as you usually do not change them frequently. We all try to buy the best possible brand to ensure efficient and smooth working without needing repair anytime soon. However, sometimes due to unwanted reasons, your system might stop working and may need a repair. In some cases, the problem can be fixed by yourself and does not require professional help.

What is a Condensate Pump?

When you observe something wrong with your air-conditioner or HVAC system, the first task is to discover the issue. Failing to find out the right cause may lead to more problems and cost more eventually. If you suspect that the condensate pump not pumping water out, it is important to be sure if the problem is with the pump or any other part.condensate pump

The condensate pump is the last part of the condensate system and is responsible for pumping water out of your house. The pump lifts the float when the water levels in the condensate pan rise. When the float reaches a particular level, it turns on the motor switch and propels water out of the system.

READ MORE: 6 Best Dehumidifier Removal Condensate Pump

How to Tell if the Condensate Pump is Working?

Are you sure about the cause when you say, “why is my condensate pump not working?” Here are a few simple steps to see if the condensate pump is working. If you conclude that the pump is not working, the steps to troubleshooting the system are mentioned later.

You can check why the condensate pump is working in these simple steps:

Check the Power

A simply resolvable problem could be discontinued power for the motor to function. Check the wire connected to the pump and see if it is connected properly.

Check the Float

The build-up of debris and algae in the system can lead to the float being stuck. If you observe that the float is not moving, tap it lightly. However, if the float is broken, you will have to get it replaced.

Check the Valve

If the condensate pump running but not pumping, it may be due to a clogged valve. Clogging of the valve due to algae and debris can lead to problems in pumping. To clean the valve, simply remove the drain line, remove the valve, clean it and fix it again.

Read what had to say about “How to Tell If Your Condensate Pump Is Working”?

How to Troubleshoot a Condensation Pump?

If you find out that your condensation pump is not working, here are six easy steps to fix it yourself.

  • The first step is turning off the AC switch to ensure nobody gets harmed during cleaning or repair.
  • The next step is to locate the condensate pump. Look for a rectangular plastic box next to the furnace. Remove the top of the box and remove the water to make it easy to inspect the pump.
  • Check for the float as mentioned above. It is among the smallest issues that make the condensate pump not pumping water It is also quite easy to fix as you only have to tap it to make it work again. Look for damage if a repair is needed.
  • If the float is working fine, the reason for the condensate pump not pumping water out could be a blockage in the drain line. Use a cup of peroxide, vinegar, or bleach to open the drain and let it sit for half an hour.
  • When none of the abovementioned problems are found, the system will require professional help.

To save yourself from the trouble of finding the issue and fixing it, carry on proper maintenance of the system. It will not only save you from sudden problems with the AC but also extend the life of the system.


How long should a condensate pump last?

A condensation pump usually lasts a long time, and you do not need to replace it often. You may need to change it after 2 to 3 years. Proper maintenance and care can add more years to its lifespan.

What happens when the condensate pump stops working?

If the condensate pump is not working properly and you fail to fix it in time, the water will overflow and spill on the floor.

Why is my pump not pumping water?

Your condensation pump might not work because of a clogged drain line, float, or a leak in the system.

Final Words

The condensate pump not pumping water out may be due to several reasons. You must find out the root cause to fix it before the situation worsens. Check the float and the drainpipe along with the motor pump for uninterrupted air-conditioning in your rooms.

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