How Much Does it Cost to Install a Grease Trap? [2021]

Grease traps have been around for nearly a century. They also have other names like grease interceptors, grease management, and FOG (Fats, Oils, Grease) Traps.

Many enterprises create a large volume of food. This increases the use of cooking oil and fat in their kitchens. All these FOG enter the sewage system. Grease slowly damages the sewage pipes. This costs the government big bucks on repairs.

how much does it cost to install a grease trap
How Much Does it Cost to Install a Grease Trap

The Grease Trap: How does It Work?

A grease trap helps to stop the grease from entering the sewage system in the first place. This is a sophisticated system that is installed in almost all the kitchens of enterprises. Oil and fat don’t mix. A grease trap takes advantage of this phenomenon.

Water enters the grease trap and settles there for a time being. The FOG float on top. This floating FOG is restrained by the system and the clear water flows out. Businesses that use grease traps include restaurants, cafes, hotels, etc. School and College kitchens also use these.

In this article, we will look at the different tangents of installing grease traps. We will also focus on the associated costs of installing this system. We hope this article helps you understand the different aspects of installing a grease trap.

How Much Does it Cost to Install a Grease Trap?

There are different grease traps. The small indoor grease traps can usually be up to 100 gallons of waste. These grease traps range from $250 to $1500. There are also bigger outdoor grease traps that hold a lot more waste.

Big outdoor grease traps can hold 750 gallons to 1500 gallons of waste. They cost significantly more. These range from $4000 to $4800. This is an average estimation of the costs. You might need bigger systems. Some systems can hold up to 500 gallons of waste.

These bigger grease traps also cost much more than the smaller ones.

Grease Trap Installation Cost Summary

According to the following estimate for 2021, the installation costs of a grease trap are as follows:

1-100 gallons cost$250-1500
750-1500 gallons cost$4000-$4800
Small grease trap cleaning cost$100-$200
Large grease trap cleaning cost$1000

Grease Trap Cleaning Costs

Small indoor grease traps need frequent pumping. Plumbers come with their equipment and they pump out the waste that builds up in the grease trap. The bigger the grease trap, the more it will cost to pump.

The advantage of having bigger traps is that you don’t need frequent pumping. This cost less than frequent pumping. So, a small indoor grease trap can hold up to 200 gallons of waste. Pumping out this amount of grease will cost you from $100 to $200.

There are also bigger indoor grease traps that can hold more gallons of waste. So, having this cleaned will cost you more.

The bigger outdoor grease traps that hold 5000 gallons of waste will cost you significantly more. They cost around $1000 to clean.

Cleaning is compulsory after a period. So, think about it while buying your grease trap.

5 Factors that Determine the Cost of Grease Trap 

Here I’ll try to explain some of the factors that will affect your decisions. These are not always definitive. But you can certainly derive some benefits from them.

1. Labor Cost

The labor rate in your locale is a big factor in these decisions. Some areas have high labor rate than others. So, getting work done in high-rate areas will cost you more.

2. Materials & Equipment Cost

There is also the cost of materials and equipment. The average cost of required materials and equipment in your locale is also an important factor to consider before making a decision.

3. Surface Preparation

There will be a small initial cost of preparation. The installation surface will be prepared beforehand. So, preparation and material costs are considerable factors.

4. Outdoor Installation

Installing grease traps in outdoor areas is a difficult job. It will certainly create some mess on the site. So, you have to spend some money on cleaning.

5. Permission & Other Procedure

You will have to take all the required permissions for installing the grease traps. After getting the required permits and paying all the necessary fees, you can start your work.

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Grease Interceptor Suggestions for Homeowners

Home is the place of comfort for all. You need to do everything you can to make yourself and your family as comfortable as possible. Installing grease traps is a step that you can take as an individual.

A popularly growing cause of sewage pipe overflows is grease. Grease builds up in the pipe and blocks the normal water flow. Also, it causes the pipes to get damaged slowly. These unfortunate occurrences can cause a health hazard.

So, as a family person, you will have to make sure that the sewage system is working in top condition. And a step for making it happen is installing a grease trap.

Grease Management & Advice for Business Owners

Commercial kitchens generate the highest amount of grease in an area. So, a business owner has to be particularly cautious about food preparation and food waste. Also, it is illegal to operate without a grease trap. The amount of FOG a business produces is far more than any household.

So, they have to be responsible for the waste they produce. Also, a business has to make sure that no solids enter the sewage pipes. These irresponsible actions cause municipalities thousands of dollars each year in repair and cleaning costs.

Another thing to be aware of is the usage of chemicals. Some chemical products claim to dissolve the grease in the sewage. But they simply wash it to the sewage. This increases problems for a business and a municipality in the long run.

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I’m now going to answer the most common questions that people asked about (Grease Trap Installation): FAQ

What size grease trap do I need?

If you are looking to buy a grease trap for your house, you can take a small one that holds up to 200 gallons of grease. You can also take a big outdoor one for multiple families or businesses. These grease traps can hold up to 5000 gallons of grease.

How often should I clean the grease traps?

A grease trap must be clean once every two or three months. Any more than that, you take the risk of overflows. They can cause serious problems. Also, some people use the ¼ theory.

It states that when one quarter (25%) of the grease trap is filled, you should go for cleaning. You might have to clean your grease traps weekly if you are generating grease in high amounts.

How long does it take to install a grease trap?

The duration of the work will depend on the complexity of your installation site. Some sites need more preparation time. This makes the job difficult and more time-consuming. On the other hand, some are rather easy and take less time than usual.

On average, it will take two to three hours to install a grease trap fully.

Where is a grease trap usually installed?

A grease trap is usually installed underneath the sink of your kitchen. Sometimes, the grease trap is also installed under the kitchen floor. Both ways require regular cleaning.

What happens when a grease trap is full?

A full grease trap will overflow. It will cause the water to spill to the second compartment of the grease trap. A clog in the secondary compartment will cause clogging in incoming, outgoing, and crossover lines.

Who is responsible for a grease trap?

The owner of the home or business is responsible for the grease trap. They have to maintain and clean the grease trap regularly.

How to fix a smelly grease trap?

You can fix a smelly grease trap with hot boiling water. You need to pour water into the sink directly. It helps with the smell. Also, another way is to use baking soda and vinegar. Make a mixture of one cup of baking soda and one cup of white vinegar. Now, wash the mixture down the sink with boiling water.

How to seal a grease trap?

You can simply install a gasket around the drain. They can be of rubber or silicon.  

I hope this helpful guide will assist you in reducing the costs of installing a grease trap for your home, kitchen, restaurant, cafe, and whatever other business you may have. You are also welcome to ask questions about grease trap installation or to share your own experience. Our related cost guides include grease traps, backflow preventers, home improvement, and many more.

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