How to Filter Oil from a Commercial Deep Fryer: A Comprehensive Guide for Australians


Hey there, Aussie deep fryer enthusiasts! If you’re running a commercial kitchen, you know that keeping your deep fryer oil clean is crucial for serving up delicious, crispy food. But filtering oil might seem like a daunting task. Don’t worry, though—we’ve got you covered. This guide will walk you through the process step by step, making it as easy as pie (or should we say, as easy as frying up a batch of chips). Let’s dive in and get your fryer oil sparkling clean!

1. Understanding the Importance of Oil Filtration

First things first, let’s chat about why filtering your oil is so important. Clean oil not only makes your food taste better, but it also helps maintain a consistent cooking quality, extends the life of your oil, and keeps your fryer in good shape. Plus, it’s better for the environment. So, if you’re not already filtering your oil regularly, now’s the time to start!

2. Preparing for Oil Filtration

Before we get to the nitty-gritty, here are a few things you’ll need:

  • Safety gear: Gloves and protective clothing to keep you safe from hot oil
  • Equipment: An oil filter machine, filter papers, and heat-resistant containers

Pick a time when your kitchen isn’t too busy—after peak hours or during scheduled maintenance is perfect.

3. Step-by-Step Guide to Filtering Oil

Alright, let’s get down to business!

Step 1: Turn Off and Cool Down

  • Turn off your fryer and let the oil cool to a safe temperature. This is super important to avoid any nasty burns.

Step 2: Drain the Oil

  • Carefully drain the oil into a clean, heat-resistant container. Make sure to remove any large bits of food or debris you can see.

Step 3: Set Up the Filtration System

  • Set up your oil filter machine according to the manufacturer’s instructions. Place the filter papers correctly—these will catch all the gunk you don’t want in your oil.

Step 4: Filter the Oil

  • Slowly pour the oil through the filter machine. Run the filtration process until the oil comes out clear and free of debris.

Step 5: Clean the Fryer

  • While the oil is filtering, clean the fryer basin to get rid of any leftover food particles or sediment. Make sure it’s completely dry before you refill it with the filtered oil.

Step 6: Refill the Fryer

  • Pour the filtered oil back into the fryer. Top it up with fresh oil if needed to maintain the optimal oil level.

4. Best Practices for Maintaining Oil Quality

To keep your oil in tip-top shape, make filtering a regular habit—daily or after each use is ideal. Keep an eye on your oil quality, and replace it when it starts to look dark or smell off. Store filtered oil properly to prevent contamination, and always follow the fryer manufacturer’s guidelines.

5. Troubleshooting Common Issues

If your oil is still cloudy after filtering, you might need to run it through the filter again. Slow filtration? Check for clogs or old filter papers. And if you spill oil during the process, clean it up immediately to avoid accidents.

6. Choosing the Right Oil for Your Deep Fryer

Picking the right oil can make a big difference. Look for oils with high smoke points like canola, sunflower, or peanut oil. They’re great for frying and have a neutral taste. Remember to consider cost and flavor preferences when choosing your oil.

How to Filter a Frymaster Fryer

  1. Turn Off the Fryer: Ensure the Frymaster fryer is turned off and has cooled down to a safe temperature.
  2. Assemble the Filtering Equipment: Get the necessary filtering equipment, such as a filter machine or filter paper, a clean container, and heat-resistant gloves.
  3. Open the Drain Valve: Open the drain valve to allow the oil to flow out into the filter machine or container. Be careful, as the oil may still be hot.
  4. Filter the Oil: If using a filter machine, turn it on to circulate the oil through the filter paper or screen. If using a manual method, pour the oil through a fine mesh strainer or filter paper into a clean container.
  5. Clean the Fryer: Once the oil has been filtered, clean the fryer’s interior to remove any remaining debris or residue.
  6. Return the Filtered Oil: Pour or pump the filtered oil back into the fryer. Ensure all parts are reassembled correctly before turning the fryer back on.

How to Remove Oil from a Deep Fryer

  1. Turn Off and Cool Down: Ensure the deep fryer is turned off and let the oil cool down to a safe temperature.
  2. Prepare for Draining: Place a heat-resistant container underneath the fryer’s drain valve or outlet.
  3. Drain the Oil: Open the drain valve or remove the oil by tilting the fryer carefully. Allow the oil to flow into the container.
  4. Filter the Oil (Optional): If you plan to reuse the oil, filter it through a fine mesh strainer or cheesecloth to remove food particles.
  5. Clean the Fryer: Clean the fryer’s interior thoroughly with warm soapy water. Rinse and dry completely before refilling.
  6. Dispose of or Store the Oil: If disposing of the oil, pour it into a sealed container and take it to a recycling center or dispose of it according to local regulations. If reusing, store the filtered oil in a clean, airtight container.

How to Filter Cooking Oil for Reuse

  1. Cool the Oil: Allow the oil to cool down to a safe temperature after frying.
  2. Prepare a Filter: Place a fine mesh strainer or cheesecloth over a clean, heat-resistant container.
  3. Pour the Oil: Slowly pour the used oil through the strainer or cheesecloth to remove food particles and debris.
  4. Optional Double Filtration: For finer filtration, you can pass the oil through a coffee filter or a specialized oil filter paper.
  5. Store the Oil: Transfer the filtered oil into a clean, airtight container and store it in a cool, dark place until ready to use again. Label the container with the date to keep track of its freshness.

How Do You Filter the Oil in a Commercial Fryer?

  1. Cool Down: Allow the fryer oil to cool to a safe temperature.
  2. Drain the Oil: Use the fryer’s drain valve to empty the oil into a suitable container.
  3. Filter the Oil: Pass the oil through a commercial fryer oil filter machine or a manual filter system with filter paper or a mesh filter.
  4. Clean the Fryer: Remove any residual food particles or debris from the fryer.
  5. Return the Oil: Once filtered, pour the clean oil back into the fryer.

How Do Restaurants Filter Cooking Oil?

  1. Daily Filtration: Restaurants typically filter their cooking oil at the end of each day or after each use in busy kitchens.
  2. Use of Filter Machines: Many restaurants use commercial oil filter machines that automatically filter and pump the oil back into the fryer.
  3. Manual Filtering: Smaller establishments might use manual methods, such as pouring the oil through filter paper or a fine mesh strainer.
  4. Oil Management Systems: Some restaurants use advanced oil management systems that automatically filter, monitor, and top up the oil levels.

Can You Filter Deep Fryer Oil?

Yes, you can filter deep fryer oil to remove food particles and extend its usable life. Regular filtration helps maintain oil quality and the taste of fried foods.

How Often Should Commercial Fryer Oil Be Filtered?

Commercial fryer oil should be filtered daily, or after each use for high-volume establishments. Regular filtration helps keep the oil clean and ensures consistent food quality.

How do I filter deep fryer oil at home?

Let the oil cool to a safe temperature, then pour it through a fine mesh strainer or cheesecloth into a heat-resistant container. Refilter if necessary and store in a clean, airtight container.

How Often Should You Change Fryer Oil in a Restaurant?

The frequency of changing fryer oil in a restaurant depends on several factors, including the type of food being fried, the volume of frying, and the type of oil used. However, a general guideline is to change the fryer oil every 8-10 uses. For high-volume establishments or when frying heavily battered or breaded foods, it may be necessary to change the oil more frequently, such as every 5-6 uses. Always monitor the oil’s color, smell, and taste to determine if it needs changing sooner.


Regular oil filtration keeps your food tasting great and extends the life of your fryer. Make it a routine part of your kitchen maintenance, and you’ll see the benefits in no time. Happy frying, and enjoy those perfectly crispy dishes!

Additional Resources

For more tips and product recommendations, check out local suppliers for Commercial Kitchen Equipment  or online stores. And if you need further assistance, don’t hesitate to reach out to our service providers in Australia who specialise in commercial kitchen maintenance.