Why My Kitchen Exhaust Fan Dripping Oil?

Problems My Kitchen Range Hoods Dripping Oil

Most of the time, the filter is to blame when grease magically appears on your stove. When this grease filter is full and can no longer hold more, the grease accumulates and drips onto the stove. If oil is leaking from it, it has collected enough oil vapor from cooking. That is a sign that it needs to be cleaned. At least once every two months, remove this filter and wash it.

If you have not cleaned the inside of your hood for a long time, grease, oil, dust, and other dirt will accumulate and drip onto the grease or oil. For this reason, the inside of the kitchen hood should be cleaned often. If there is grease inside the cavity, you can clean it with a sponge or a dry cloth. Before working inside the scope, you should turn off the switch or power line to protect yourself from anything that may happen.

Keep the inside and outside of the kitchen hood clean with a degreaser and a dry cloth or sponge. This will get rid of the problem. If you keep the grease trap and filter clean, you will no longer have to worry about oil and grease leaking from your hood.

Where Does the Dripping Greasy Water Come From?

Most good exhaust fans have fans that move quickly. The fan tries to remove the water vapor from the exhaust pipe in just a few seconds, instead of letting it flow through the pipe.

Cool or cold weather aggravates the problem of greasy water drops, so it is better to insulate the exhaust pipes in the kitchen and bathroom so that they remain as warm as possible.

Do you remember when your physics teacher was talking about condensation? If you live in a humid area, this is something that you feel in the summer. Think about the beer or soda you take out of the refrigerator and put on your patio table. It is dry when you take it out of the refrigerator, but in wet weather, a fog forms on the cold metal in less than a minute. After a few minutes, there is a small pool of water at the bottom of the can.

Now think about how much space the pipe of your kitchen fan takes up. It could be 50 or 100 times the surface area of a single soda can, and it could produce enough oily water to drain from the hood if it is not properly drained.

How To Clean Kitchen Exhaust Fan Grease?

First of all, make sure that the exhaust fan is not plugged in. This protects you if the electricity rises while you touch the fan and remove the filter or put it back in place.

After disconnecting everything, carefully remove the grease filter while wearing gloves. This is the square piece of wire mesh that goes under the fan.

To get rid of the filter, unhook the tabs or levers that hold it in place and gently remove them. Try sliding a butter knife around the edges if it doesn’t come out easily.

As we have already talked about, this is a very important job. It has two parts: cleaning the exhaust fan filters and cleaning the blades and the exhaust fan housing. The exhaust fan in the kitchen should be cleaned at least once a year, but the filters should be cleaned much more often because they are the dirtiest.

Before starting this project, however, you may want to check your manual to see what types of cleaners are safe for your device and if your filters can be used over and over again.

You can also try getting a water-based degreaser from an auto parts store and letting your filter soak in it for a while. Then rinse it well and let it dry before putting it back on.

How To Fix a Leaking Range Hood?

Putting exhaust ducts or kitchen hood vents through the roofs is not a good idea because condensation can flow into the house. You either have to go through a side wall or go down into the basement and exit from the side. But if you have to go up and through the roof, do not make any loops in the ducts. If you do this, condensation and mold will develop in the lower places.

Use insulated ducts or wrap insulation around ridged ducts to prevent condensation from forming in the vent of a kitchen hood. You should not let the exhaust duct out through the soffit because the hot air will rise and then rise back into the attic. And do not block the exhaust duct in a roof vent. The ventilation hood will fill with condensation, which will drip into the attic or the exhaust duct.

Instead, use special roof exhaust hoods that have a collar around the edge the same size as your exhaust duct. This allows you to attach the duct to the hood in such a way as to prevent air from entering and keep it in place. Then choose extractor hoods with built-in drains that direct condensation to the roof instead of returning it to the attic.

When the kitchen hood is installed correctly, two metal dampers prevent outside air from entering. One flap is at the top of the hood, where it connects to the duct, and the other is on the wall, where the duct lets air out. These thin flaps cannot seal tightly because they open when the fan is at low speed, but they prevent cold drafts from entering and hot drafts from entering.


By following the steps above, you have learned how to fix a leaking range hood. If you follow these steps correctly, you will no longer have problems with water or grease leaks from your kitchen hood. You don’t want this same problem to happen again. In this case, you should regularly clean the inside and outside of your hood, clean the filters before they are too full, and make sure that the fan and ducts are working properly.