Energy-Saving Tips for Water Heaters: Leaving It On Can Cost You More Than You Think!

When winter hits, taking a hot shower becomes essential, especially with the cold weather making us stay longer in the bathroom. But with electric water heaters being one of the biggest energy guzzlers at home, using them carelessly can lead to a huge spike in your electricity bill. In this article, we’ll share some simple and practical tips to help you save on water heater energy costs, so you can enjoy a cozy, budget-friendly winter.

Don’t Leave the Water Heater On All Day

Many people have the habit of leaving their water heater on all the time, thinking it’s more convenient to have hot water ready whenever they need it. But whether you have an instant or storage-type water heater, leaving it on constantly can seriously increase your energy consumption.

• Instant Water Heaters: These heat water quickly, but they consume a lot of electricity—about one kilowatt every six minutes. So, it’s best to only turn it on when you need it and switch it off immediately after use. This simple habit can significantly cut your electricity bill.
• Storage Water Heaters: It’s even more important not to leave these on all day. Storage heaters work by continuously reheating water to maintain a set temperature. Every time the water cools down, the heater kicks in again, leading to constant power use. The best practice is to turn it on only when you need hot water and turn it off right after to avoid unnecessary energy waste.

Install a Timer to Prevent Unnecessary Power Use

If you tend to forget to switch off your water heater, consider installing a timer. This allows you to set the heater to only run during specific times, and it will automatically shut off after you’re done showering. This method is especially handy for families that use hot water at regular times, making it both convenient and energy-efficient.

Showers Over Baths: Save Water and Energy

How you shower can also impact your electricity bill. If possible, opt for showers instead of baths. Studies show that showers use about half the water and energy of baths. You can also install a low-flow showerhead to reduce water usage further and save on heating costs.

Pay Attention to the Energy Label

When buying a new water heater, make sure to check its energy label. Opting for models with a “Grade 1” energy rating ensures you’re choosing one of the most energy-efficient products on the market. This small detail can help you save even more on your everyday electricity usage.

Shorten Your Shower Time

The longer you shower, the more energy your water heater uses. So, reducing your shower time is an easy way to lower your electricity bill. Whether you’re using an instant or storage water heater, cutting down your shower time will lead to noticeable savings. The ideal approach is to prepare everything you need before you shower, so you don’t waste time in between.

Don’t Set the Temperature Too High

The electricity used by your water heater is directly related to the temperature you set. The higher the temperature, the more power it consumes. To save energy, it’s best to keep the water temperature at a reasonable level and avoid constantly turning it up.

Single-Tank vs. Double-Tank Water Heaters

According to tests by the Consumer Council, single-tank water heaters are more energy-efficient because they retain heat better. On standby, they use between 0.35 and 0.85 kilowatt-hours per 24 hours, while double-tank heaters use between 0.95 and 1.8 kilowatt-hours. So, if saving energy is your priority, a single-tank water heater is the way to go.

Installation and Maintenance Tips

When installing a shower water heater, always use the original or approved mixing valve and showerhead. Never install any switches on the water outlet pipe, as this could lead to pressure build-up and possible explosion. Additionally, regularly check the temperature and pressure relief valve of your non-vented water heater to ensure safe operation and prevent any unexpected issues.

We hope this Moorgenzine article helps you understand how to save energy while using your water heater. If you’d like to experience firsthand how smart home technology can improve your life, feel free to visit Moorgen’s showroom in North Point, Hong Kong, for a real smart home experience.