He offers these Top Tips for improved efficiency in refrigeration and air conditioning:

• Prioritise maintenance: well-maintained systems use considerably less energy; so regularly servicing your equipment is vital. Keep refrigeration condensers clean and dust-free, as well as checking fans – dirty blades will reduce airflow and efficiency.
• Do not over-refrigerate: only cool to the temperature you need, as every 1°C can save you 1.5-2% of the total energy output.
• Check seals: all doors on refrigeration equipment should have well-fitting seals, with door gaskets or auto closers fully intact. Damaged or broken seals can often be identified with a simple visual check.
• Regularly clean and replace air filters: whether using a central air conditioning system or stand-alone unit, even partially blocked filters will send the system into overdrive – costing more money to do the same job. Check the HVAC filter system regularly and be prepared to change it every 3-4 months.
• Keep doors shut: loading and unloading tasks should be carefully organised so doors are not left open for longer than absolutely necessary. Consider installing strip curtains in cold rooms to reduce temperature fluctuation.
• Never overstock: always make sure there is plenty of room for the cool air to circulate properly, products should not block grilles, fans or extractors.
• Give bottle coolers a break: unless you are open 24/7, and providing the seals are in good working order, these systems can be turned off at night. Switching off the lights at a minimum will prevent the system working harder than it needs to.
• Zone control AC: operating heating and cooling systems at the same time not only increase energy consumption but is likely to wear your system out more quickly – hotels regularly succumb to this pitfall. Again, make sure doors are kept closed and ensure systems are set to a realistic temperature.