Grease Arrestor

4 Signs You Need To Replace Your Grease Arrestor


A grease arrestor, also known as a grease trap, is used in commercial kitchens and food preparation areas to remove fats, oils and grease from all wastewater before it enters the sewer system or septic tank. Over time, the fats, oils and grease can form a layer within the grease arrestor, leading to reduced efficiency. Regular maintenance and cleaning will ensure the grease trap operates efficiently; however, like any other plumbing fixture, a grease arrestor has a lifespan and will eventually need to be replaced. Here, Aline Pumps, premium pump supplier and manufacturer in Australia, discusses some common signs a grease arrestor may be due for replacement. Contact us for same day problem rectification.

Foul Odours

If you notice unpleasant odours coming from the grease arrestor when servicing or cleaning it, it may be an indication that it is no longer functioning properly. A grease arrestor that is not properly maintained can become clogged, leading to a noticeable odour in the area. In some cases, a thorough clean may solve this issue. If, however, the foul odour persists it may be a sign of a more serious issue. You should first confirm the odour is originating from the grease arrestor, and not elsewhere in the system. Ensure the vent pipe and surrounding plumbing is unobstructed and not the cause of the odour. Whilst there are steps to take before replacing the grease trap, a foul odour coming from the grease arrestor may be a sign it is due for replacement.

Slow Draining

A grease arrestor that is clogged or no longer working properly may cause slow draining in sinks, drains and toilets. If you notice water taking longer to drain than usual, it may be a sign the grease arrestor needs to be serviced, or is due for replacement. Over time, fats, oils and grease can accumulate in the grease arrestor, causing it to become full and reducing its effectiveness. To address this, the unit should be emptied and cleaned to remove any build up. If the issue of slow draining continues, the grease arrestor may need to be replaced. Aline Pumps offers rapid response, 24 hour callouts, and has a huge inventory of spare parts.


Any overflow issues with a grease arrestor need immediate attention. Overflowing can be caused by a buildup of fats, oils, grease and other solids, which can cause the device to become clogged. When this happens, the buildup and wastewater can come back up into the kitchen sink or dishwasher, causing an undoubtedly messy, but potentially hazardous situation. In some cases, an overflowing grease arrestor can be emptied, the buildup removed and the grease arrestor can continue to work.



The lifespan of a grease arrestor can vary depending on several factors, including:

  • the size and type of device
  • the volume of fats, oils and grease it receives
  • the frequency of maintenance and cleaning.

Grease arrestors ultimately have a limited lifespan. Typically, if the fixture has had 10-15 years of use, it may be time to approach the subject of replacing it to ensure compliance with local regulations.


With proper maintenance and regular inspections, grease arrestors can continue to work effectively throughout their life cycle. If you’re in need of a new grease arrestor or pump solutions Australia trusts, contact Aline Pumps, premium pump supplier, to evaluate your facility’s needs.