Restaurant extraction systems work relentlessly every day, and without proper care they can quickly develop problems that affect safety, hygiene, and kitchen performance. Since much of the ducting sits out of sight, issues often build up long before anyone notices. However, regular inspections and NAAD21-compliant Ductwork Cleaning dramatically reduce risks and keep the system functioning as it should. Even so, it’s helpful for restaurant owners and managers to understand the most common problems and how professionals deal with them.
Below are the key issues and the straightforward steps used to resolve them.
1. Excessive Grease Build-Up
Grease accumulates inside ducting whenever hot vapours rise from cooking. Over time, this build-up restricts airflow and significantly increases fire risk.
How It’s Fixed
Technicians carry out a full Ductwork Cleaning, removing grease from every part of the system. They use mechanical brushing, scraping, and specialist tools to ensure nothing is left behind. If access is limited, they also install new access panels, which makes future cleaning far more effective.
2. Blocked or Damaged Extraction Fans
Fans face constant exposure to heat, steam, and grease. As a result, their blades clog and the motor strains, eventually causing weak airflow or complete failure.
How It’s Fixed
Engineers clean, balance, and test the fan to restore performance. When parts show signs of wear, they replace them promptly. Moreover, regular Ductwork Cleaning helps identify developing fan issues before they disrupt kitchen operations.
3. Poor Airflow and Pressure Imbalances
When airflow drops, chefs often notice lingering smoke, rising temperatures, or slower extraction. These symptoms usually indicate clogged filters, grease-heavy ducting, or an underperforming fan.
How It’s Fixed
Firstly, technicians assess the system to locate the restriction. They then complete a thorough Ductwork Cleaning, replace dirty filters, and check fan performance. If the system struggles to meet the kitchen’s workload, they may recommend mechanical upgrades to improve efficiency.
4. Loose or Damaged Duct Sections
Constant vibration, along with ageing or poor installation, can cause duct joints to shift or separate. Consequently, grease and odours escape and pose safety concerns.
How It’s Fixed
Engineers repair or replace the affected sections before resealing all joints. Following this, regular Ductwork Cleaning helps spot movement or damage early, preventing repeat issues.
5. Insufficient or Incorrect Access
Many older extraction systems lack the access doors required for thorough cleaning. Without suitable access, internal surfaces become unreachable, allowing grease to accumulate unnoticed.
How It’s Fixed
Technicians install access panels that meet NAAD21 requirements. Once fitted, the system can undergo effective Ductwork Cleaning, supporting compliance and improving overall safety.
6. Water Ingress and Corrosion
Leaks from roofs or surrounding structures can allow water to enter the ducting. As a result, corrosion develops, weakens joints, and leads to structural damage.
How It’s Fixed
Specialists repair or replace damaged duct sections and, importantly, trace the source of the water so it can be resolved. In addition, consistent Ductwork Cleaning can highlight early corrosion before it becomes severe.
7. Odour Complaints
When strong cooking smells persist, the cause often lies in dirty ducting, blocked filters, or problems with the discharge point. This not only affects staff but may also lead to complaints from customers or neighbours.
How It’s Fixed
A full system inspection identifies the issue. After that, Ductwork Cleaning, fresh filters, and adjustments to the discharge setup typically eliminate the odours.
Final Thoughts
Ultimately, most ducting problems arise because the system hasn’t been cleaned or maintained frequently enough. By committing to regular inspections and consistent Ductwork Cleaning, restaurants greatly improve airflow, reduce odours, maintain compliance, and significantly reduce fire risks.
For further information on our kitchen extract cleaning, duct cleaning and kitchen ventilation cleaning please contact us on 02036408247. Alternatively email us at [email protected]