How do you clean a condensate drain trap?

Quote from the video:
Quote from Youtube video: Coil for air conditioning system and also your condensate trap for your furnace. So a simple technique is just to blow it out with a 10 cent piece of clear vinyl tubing. And then some electrical tape.

How do I find my AC condensate drain line?





Your air conditioner has a condensate drain line that runs from the indoor unit to the outside of your home. You’ll find a white PVC or copper pipe located near your outdoor unit—this is where the drain line ends.

How do I clean my HVAC condensate trap?

Clean the pan with soap and water. Find the condensate drain outlet which might be located outside your house near the foundation. Many times the clogged drain can be cleared with wet/dry vacuum suction. You can also try removing the clog with a plumber’s snake.

How do you check for condensate traps?

Quote from the video:
Quote from Youtube video: Water will start cascading down the furnace. And that would result in property damage. So what we do a lot of the time is we'll try to put an overflow. In right here because this is the primary drain.

Should the condensate trap be full of water?

The boiler should never be operated without the condensate trap in place, as it prevents noxious combustion gases from travelling down the condensate pipe. Should the trap have to be removed from the boiler, it must be topped up with water when it’s replaced.

How do I keep my AC drain line clear?





Add ¼ cup of vinegar to the drain line through the opening where the cap was removed. Let the vinegar sit for 30 minutes. Carefully flush the pipe out with water to ensure everything is flowing freely. Repeat every 30 days during the summer to keep the line clear!

How do I know if my condensate line is clogged?

Signs the AC Drain Line is Clogged

  1. Musty, moldy smell near your indoor unit or in air from the registers/vents.
  2. Standing water near the indoor unit.
  3. Water damage in areas near the indoor unit.
  4. AC system is not cooling your home.
  5. AC system shuts down or doesn’t turn on.


How do I unclog my AC drain without a shop vac?

If you have a very stubborn clog that doesn’t come out with a shop vac and water, then you can try using a drain snake. Push the drain snake down into the drain line access near the air handler. Make sure the that the drain snake does not go towards your air handler or you could potentially damage the evaporator coil.

How do I unclog my AC drain line in my attic?



Quote from the video:
Quote from Youtube video: So and for me it unclocked right away. All right as you see it's unclogged. Hopefully you can see it. Now I'm going to remove all the water from the pan. And I'm going to check after a few days.

How deep is a condensate trap?

If a unit were to be operating at minus 6 inches WC maximum negative plenum pressure then the trap height, per the guidelines shown in Figure 1a, requires 7 + 3½ + 1½ + 1 inches of height from under the floor or about 13 inches below the floor level.

What is a condensate drain trap?

The idea of the condensate drain trap is to use the weight of the water to stop the flow of air produced by the blower from being sucked into (negative pressure) into the evaporator coil or from being pushed (positive pressure) out of the drain line during operation.

How do you refill a condensate trap?



Quote from the video:
Quote from Youtube video: So then we put that back. In stop that in and rotate it clockwise to lock it back into position. And that's how you'd empty and pre fill your condensate trap on the exclusive.

How do you resolve common problems with condensate traps?

Depending on the type of trap in use, it can be blown dry with every cooling cycle leading to more problems inefficiency. The best way to resolve these problems is by contacting your HVAC technician to have the condensate drains cleaned and flushed.

Does an air conditioner drain need a trap?

There are some simple ways you can tell if the drain line in your house is being run and draining correctly. First, the coil that your primary drain line is running off of needs to be at a downward angle allowing the water from the coil to drip into the drain line. Every drain line also needs a “P-Trap”.

Does a condensate pipe need a trap?

A visible air break and trap is not required if the boiler condensate trap has a minimum condensate seal of 75 mm incorporated into the boiler.

Why is a condensate trap necessary?



The condensate drain trap in a high-efficiency furnace keeps air from moving in or out of the air handler or coil box during its operation. It is a compulsory component of the furnace drain as it aids in ensuring that your unit functions correctly.

Do you need a trap on a condensate pump?

Yes, if the pipe extends below the water line inside of a pump, that is a trap and yes, if someone adds another trap it won’t work very good. Also, the furnace has a built in condensate trap inside of it, so you need to be aware of that too.