Why Energy Efficiency Matters More Than Ever
Commercial kitchen extraction systems are among the biggest energy consumers in any restaurant. Running powerful fans for 12-16 hours a day, extracting heated air and replacing it with cold air that then needs heating – it all adds up to substantial operating costs.
With energy prices remaining volatile and the government’s Future Homes and Buildings Standard coming into force, there’s never been a better time to consider how your extraction system performs from an energy perspective. The good news is that modern technology offers genuine solutions that can significantly reduce both your costs and environmental impact.
The Future Homes and Buildings Standard: What’s Coming
The Future Homes and Buildings Standard represents a significant shift in building regulations. While primarily focused on new builds, it’s setting the direction for energy efficiency requirements across all commercial properties. The standard emphasises reduced carbon emissions, improved energy efficiency, and the integration of sustainable building practices.
For commercial kitchens, this means extraction systems need to be designed with energy efficiency as a core consideration, not an afterthought. Building Regulations Part L (Energy Efficiency) now works alongside Part F (Ventilation) to ensure systems provide adequate airflow whilst minimising energy consumption.
Technologies That Make a Real Difference
EC (Electronically Commutated) Motors: EC fans represent the biggest single improvement in extraction system efficiency over recent years. Unlike traditional AC motors, EC motors can be precisely controlled to match actual demand. They typically use 30-50% less energy than equivalent AC motors, run quieter, generate less heat, and have a longer service life. If your current system uses older AC fans, upgrading to EC technology often pays back within 18-24 months through reduced energy bills alone.
Variable Speed Drives and Demand-Controlled Ventilation: Running your extraction at full capacity when you’re only using half your cooking equipment wastes energy. Modern systems can incorporate sensors that adjust extraction rates based on actual cooking activity, temperature, or even specific time periods. During quieter service periods or when certain equipment isn’t in use, the system automatically reduces output and energy consumption.
Heat Recovery Systems: Every cubic metre of heated air you extract from your kitchen represents wasted energy. Heat recovery systems capture some of that thermal energy and use
it to pre-warm incoming fresh air. In a climate like London’s, where heating is needed for much of the year, this can substantially reduce your heating costs. Modern heat recovery units achieve efficiency rates of 73% or higher.
The Hidden Cost of Poor Maintenance
Even the most efficient system will underperform if it’s not properly maintained. Grease-laden filters increase system resistance, forcing fans to work harder and consume more energy. Worn bearings and belts reduce efficiency and can lead to premature failure. Blocked or partially blocked ductwork means the fan runs harder to achieve the same extraction rate.
Regular maintenance isn’t just about compliance – it’s about keeping your system operating at peak efficiency. We regularly see systems where simple maintenance interventions reduce energy consumption by 15-20%.
Making the Case for Upgrade
If you’re running an extraction system that’s more than 10 years old, the economics of upgrading are often compelling. Modern EC fans, improved controls, and potentially heat recovery can reduce your extraction-related energy costs by 40-60%. When combined with reduced maintenance requirements and improved reliability, the payback period is often shorter than expected.
We can assess your current system’s performance and energy consumption, then model the potential savings from various upgrade options. This gives you the data you need to make an informed decision.
Planning for the Future
Whether you’re installing a new system or planning an upgrade, building in energy efficiency from the start makes sense. The regulatory direction is clear – energy efficiency requirements will only increase. Systems installed today should be designed with this trajectory in mind.
Fan Rescue designs and installs energy-efficient commercial kitchen extraction systems across London. We can help you navigate the options, understand the costs and savings, and implement a system that meets both current regulations and your operational needs. Contact us to discuss your requirements.
