Energy Efficient Renovation: Saving Money on Utilities Long Term

Energy Efficient Renovation Choices Smart renovation decisions can reduce your monthly utility bills by $50-150. Over 10 years, that adds up to $6,000-18,000 in savings. Air Conditioning (Biggest Impact) Choose inverter aircon systems (5-tick energy rating). They cost $200-500 more upfront but save 30-50% on aircon electricity compared to non-inverter models. Proper insulation helps too. If your unit faces west and gets intense afternoon sun, consider thermal curtains or window film. Reducing heat gain means your aircon works less. Seal gaps around windows and doors to prevent cool air from escaping and warm air from entering. Lighting LED lights use 80% less electricity than halogen and 50% less than CFL. A 10W LED produces the same brightness as a 60W incandescent bulb. Use warm white LEDs (2700K-3000K) for bedrooms and living rooms. Cool white (4000K-5000K) for kitchens and study areas. Install motion sensor lights in corridors, toilets, and store rooms. These ensure lights are never left on accidentally. Water Heating An instant water heater ($150-300) heats water on demand and uses no electricity when not in use. This is more efficient than a storage water heater that keeps water hot 24 hours. If you prefer a storage heater for consistent water pressure, choose one with good insulation and a timer so it only heats water during your typical shower times. Heat pump water heaters are the most efficient option ($1,500-3,000) using 75% less electricity than conventional heaters. They recover the cost difference in 3-5 years. Appliances Look for the NEA energy label on all appliances. Each tick represents significant energy savings over the appliance lifetime. A 4-tick fridge costs about $80 less per year to run than a 1-tick fridge of the same size. Front-load washing machines use 50% less water and 30% less electricity than top-load models. A washer-dryer combo with heat pump technology uses 60% less electricity for drying compared to conventional dryers. Water Saving Install water-efficient fittings with the PUB Water Efficiency Label. 3-tick taps and shower heads use up to 30% less water. Dual-flush toilet cisterns let you choose between 3L and 6L flush. Over a year, a family of four saves about 30,000 litres of water. Thermo-faucets that mix hot and cold water at the tap reduce water waste from adjusting temperature. Ventilation Natural ventilation through cross-ventilation (windows on opposite walls) reduces aircon dependency. Consider louvered windows or adjustable window panels that allow airflow while maintaining privacy. Ceiling fans cost about $0.01 per hour to run compared to $0.15-0.30 for aircon. Using a fan can reduce aircon usage by several hours daily.