Many article will quote you 5 star geyser for low electricity consumption however 5 star in these geysers is for how long these geysers can retain the hot/warm water within the storage tank with minimum heat loss. That means the geyser will use same electricity as other 4 or 3 star water heater geyser if you use that hot water immediately or instead use instant water geyser. That’s why most geysers are 3 to 5 star. You’ll hardly find one with 1-2 stars in water heater geysers. This is because most of other equipment inefficiency is converted to heat as waste product however here the sole purpose of device is to convert it to heat so nothing is wasted. So this star rating is for retention of that heat with type of insulation used. Most 5 star branded water heaters can retain hot water for 4-8hours depending on several conditions.
So I’ll recommend you better buy a geyser with extra corrosion protection like AO Smith for both instant water and storage models or Havells for storage models only.
Here are some key considerations for water geysers with low electricity consumption that involves energy-efficient heating systems and optimizing the overall geyser operation:
- Insulation: Ensure the geyser is well-insulated to minimize heat loss. This includes using high-quality insulation materials for the tank and pipes.
- Tank Material: Choose a geyser with a tank made of a good insulating material, such as glass-lined steel or fiberglass, which helps retain heat longer and reduce the need for constant reheating.
- Thermostat and Temperature Control: Install an accurate thermostat to control the water temperature. Avoid excessive heating, as this can waste electricity. Set the thermostat to the desired temperature to avoid overheating the water.
- Energy-Efficient Heating Element: Use an energy-efficient heating element, such as a heat pump or a high-efficiency electric resistance element. Heat pumps are particularly efficient as they transfer heat from the surrounding air to heat the water.
- Timers and Scheduling: Install timers or smart controls to heat water only when needed. You can program the geyser to operate during off-peak hours when electricity rates are lower.
- Solar Water Heaters: Consider integrating solar panels into your geyser system. Solar water heaters harness sunlight to heat water, reducing reliance on electricity or gas.
- Tankless Water Heaters: Tankless or on-demand water heaters heat water only when you turn on the tap, eliminating the need for a constantly heated tank. They can be more energy-efficient for homes with low hot water demand.
- Regular Maintenance: Keep the geyser well-maintained by flushing the tank periodically to remove sediment buildup. Sediment can reduce heating efficiency.
- Proper Sizing: Install a geyser that is appropriately sized for your household’s hot water needs. An oversized geyser will consume more electricity to heat water that isn’t used.
- Energy Labels: Look for energy-efficient geyser models with high Energy Star ratings or equivalent certifications, as they are designed to consume less electricity.
- Heat Recovery Systems: Consider using a heat recovery system that captures waste heat from other appliances (like air conditioners or refrigerators) to preheat the water going into the geyser.
- Reduce Hot Water Usage: Implement water-saving measures, such as low-flow faucets and showers, to reduce the amount of hot water you use.
- Awareness and Behavior: Encourage responsible hot water use among household members to avoid unnecessarily long showers or running hot water when not needed.
Remember that the efficiency of a water geyser also depends on local climate conditions, water quality, and usage patterns. It’s essential to assess these factors when choosing and optimizing your geyser system for low electricity consumption.