Know How Much Power Your Water Heater Consumes

A hot water shower after an exhausting day at work is indeed a delight! However, concerns about the geyser power usage can dampen this experience. To alleviate these fears, it's essential to understand how to calculate the electricity consumption of your geyser and make an informed choice about the type of water heater to purchase, as well as its efficient use. 

About Water Heaters 

Water heaters, also commonly known as geysers, are appliances that heat water. The need for hot water escalates in the colder months, not only for bathing but for various other household activities. A reliable geyser that heats water swiftly and maintains its temperature for extended periods is invaluable, ensuring hot water is available whenever required throughout the day. 

Water heaters are a convenient addition to any home. Their usefulness extends beyond just the winter season, offering comfort in the form of warm, soothing baths all year round. Additionally, these appliances play a crucial role in other household tasks such as cleaning and cooking, making them a versatile and practical investment. 

With a high-quality water heater, chores involving water – be it cleaning the house, bathing, washing clothes and greasy utensils, bathing pets and more – become much more manageable and comfortable. The ease and convenience brought by these heaters make them an indispensable appliance in any household. 

Power Consumption of Water Heaters 

The power consumption of geysers is not straightforward to determine, as it depends on several factors, including the water heater's wattage, its capacity, the Standing Loss factor, its energy efficiency rating (noted through BEE star ratings), input water temperature & set output temperature. Other considerations include the average duration of usage and the number of individuals relying on the water heater. 

To calculate the power consumption of a geyser, a basic formula is employed: 

Total Power Consumption = Rated Capacity of the Water Heater x Total Operating Hours. 

For instance, if you own a 3Kw water heater and use it for two hours daily, it consumes 6Kwh daily (3Kw x 2 hours = 6Kwh), equating to six units of electricity. While this formula offers a reasonably accurate estimate, it's important to note that it doesn't account for the Standing Loss factor, which should ideally be included for more precise results. 

Typically, water heaters are responsible for a significant percentage of household electricity bills. By understanding the wattage of water heater and adopting efficient usage practices, you can significantly reduce your energy consumption and, consequently, your bills. This guide aims to provide essential tips to optimize your water heater usage, ensuring cost savings without compromising on your comfort. 

To calculate your geyser's power consumption, consider: 

• Wattage: This refers to the rate of power usage by your appliance. Typically, the power rating of water heaters is usually in the range of 2000-3000 watts.  
• Operational hours: The duration your appliance is in use. For a geyser running for 30 minutes, the operational hours are 0.5. 
• Electricity tariff: This varies by location and is the cost per unit of electricity. 
• Unit of electricity (kWh): Power consumption is measured in kWh, providing a clear view of your usage. 

What Influences Water Heater Wattage? 

Several factors influence the water heater power consumption, each playing a significant role in determining your electricity bill. Understanding these factors can help you optimise your usage and manage costs effectively. 

• The volume of water utilised

Firstly, the volume of water utilised is a crucial determinant. Simply put, the greater the amount of water heated, the higher the electric water heater power consumption. This direct correlation means more extensive use leads to heftier bills. 

• The region you live in

The source water temperature also impacts energy usage. In colder regions, like the North, the operational hours of water heaters increase to achieve the desired water temperature for usage compared to temperate climates, such as in the South. This geographical difference results in varying water geyser wattage requirements. 

• Thermostat setting

Another key factor is the thermostat setting on your water heater. Many models are preset to around 60°C, consuming more energy. Adjustable models allow users to modify this setting, potentially reducing the water heater's wattage consumption. 

• Standing loss

Standing losses represent another significant aspect. This term refers to the energy lost through the water heater's surface, even when the water remains unused but heated. This loss depends largely on the construction materials of the unit. Higher PUF density, often found in branded heaters, usually results in lower standing losses. These models often come with a BEE rating, indicative of their energy efficiency and quality. 

How to Monitor Your Water Heater’s Power Consumption? 

Are you keen to discover effective ways to reduce your water heater power consumption and trim your electricity bills? Here's a guide with essential tips for efficient use of your water heater. 

• Monitor hot water usage

Controlling the amount of hot water used is vital in reducing electricity consumption. For instance, if each family member uses a bucket holding capacity of 15 litres for bathing, , you can easily calculate the total hot water requirement. Similarly, for showers, bathtubs, washing clothes, or dishes, knowing the average litre per usage helps manage your electric water heater’s power consumption. 

• Select the right capacity of geyser

Opting for a geyser that fulfils the capacity of water usage depending on your family size is crucial. An undersized geyser leads to multiple heating cycles, whereas an oversized one heats more water than necessary. Both scenarios increase the water geyser’s energy consumption. 

• Opt for energy-efficient models

When purchasing a new geyser, choose models with a higher BEE rating. These energy-efficient geysers have lower standing loss thus, conserving energy , addressing the issue of water heater’s wattage consumption effectively. 

• Set geyser at an optimum temperature of  60°C

Adjusting your geyser's temperature to 60°C helps save energy. It's noteworthy that while the geyser heats water to this temperature, it's usually mixed with cold water for use, given the body's tolerance to heat. 

• Energy-saving upgrades

Installing upgrades like solar panel insulation can significantly reduce your geyser's power usage. Advanced solar panels can store energy, further decreasing the electric water heater’s energy consumption. 

• Shorter showers over long baths

Encourage shorter showers instead of long hot water baths. This simple change can lead to substantial savings in power consumption. 

• Replace older geysers

If your water heater is over ten years old, consider replacing it with a newer, more energy-efficient model. Modern geysers come with advanced features that enhance energy efficiency, thereby reducing electric water heater power consumption. 

By adopting these strategies, you can effectively manage your water heater's power usage, ensuring both cost savings and energy efficiency. 

Things to Keep in Mind When Buying a Water Heater 

When selecting a water heater or geyser, there are several key factors to consider: 

• Type of water heater

You can choose between an instant water heater and a storage water heater. Instant water heaters are ideal for immediate hot water needs in places like kitchens and bathrooms. In contrast, storage water heaters, equipped with a tank, are suitable for storing hot water for later use. 

• Capacity needs based on family size

The size of your family is a critical determinant when choosing a geyser. For smaller families of 2 to 3 members, an instant water heater usually suffices, especially for a bucket bath. For larger families with 4 to 8 members, a storage water heater with a capacity of over  15 litres may be more appropriate. 

• Physical size and shape

The physical dimensions and shape of the water heater are important considerations. Immersion rods, for example, are portable and space-saving. In contrast, both instant and storage water heaters are fixed installations, so their size matters. Horizontal storage models are typically more compact, whereas vertical-mounted storage types are relatively larger. 

• Heating time

The time it takes for the water heater to heat up the water is influenced by its tank size. Smaller capacity for e.g., 3L and 6L water heaters heat water more quickly, making them a better choice if you need hot water instantly. 

• Energy efficiency and power consumption

The energy efficiency of a water heater is often indicated by its energy star rating. A 5-star rated water heater, while more costly, is energy-efficient and saves on electricity bills in the long run. Conversely, models with a 1 or 2-star rating are less expensive initially but less energy efficient, leading to higher operational costs. 

Crompton Water Heaters – An Overview 

Crompton's water heaters are designed with advanced features for safety, durability, and efficiency. They offer protection against corrosion and rust, thanks to their rust-proof ABS body and superior coatings. The heaters are equipped with a pre-calibrated thermostat for precise temperature control and a triple shield technology to combat hard water residues, ensuring efficient heating and minimal mineral deposit build-up. Safety features include shock-resistant designs, overheat protection for the heating elements, and immersion rods with shock-proof handles.  

The water heaters are versatile in installation orientation, with vertical & horizontal installation. Additional features like a powerful 1200-gm copper heating element and Gyroscopic Technology enable rapid heating and prevent the mixing of hot and cold water. The heaters also prevent scale formation with an Incoloy heating element and offer a high tank capacity for a constant hot water supply. Energy efficiency is enhanced by standby cutoff and PUF insulation.  

Overall, Crompton's water heaters are a robust, energy-efficient and cost-effective solution for hot water needs, especially in areas with hard water. 

Takeaway 

If you enjoy hot water baths, you can consider a water heater as it is a convenient tool that heats water relatively quickly. However, be mindful of its usage as it can impact your power bills.  

FAQs on Power Consumption of Water Heaters 

• How can I save on electricity costs while using a water heater?

Some ways you can make your water heater energy efficient include adjusting the thermostat, keeping an eye out for leaks, testing the temperature-pressure relief valve periodically or installing low-flow taps. 

• What is the ideal water heater for your household?

Choosing the right water heater hinges on your specific needs. For smaller families or households with minimal hot water usage, instant water heaters are often the optimal choice. These units provide hot water quickly and are suitable for limited consumption. Conversely, for larger families with a high demand for hot water, storage water heaters are more appropriate. They hold a significant volume of hot water, making them ideal for frequent use. 

In rural areas, gas water heaters are often the preferred choice due to their efficiency and suitability in regions where electricity may be less reliable. For individuals living in temporary accommodations, such as rental homes or hostels, or for those who travel frequently, immersion rods present a convenient and portable solution for heating water. 

• Are geysers the same as water heaters?

While all geysers are water heaters, not all water heaters are geysers. The primary distinction lies in their functionality. Geysers typically refer to devices that store a substantial amount of hot water. In contrast, while an immersion rod can heat water, it doesn't store it and thus doesn't qualify as a geyser. 

• How long does it take for an electric water heater to heat water?

The time taken by a water heater to heat water varies depending on the type of heater. Instant water heaters generally heat water within 1 to 3 minutes, making them ideal for quick access to hot water. Storage water heaters, on the other hand, usually take about 10 minutes to heat the water. Immersion rods can boil water in about a minute, while gas geysers typically take between 4 to 5 minutes to heat water. 

• Should I buy an instant water heater or a storage water heater?

The choice between a storage and an instant water heater depends largely on your specific needs. If your primary requirement is immediate access to hot water, an instant water heater is likely the best option. These units provide hot water almost instantly, which is convenient for quick usage. On the other hand, if you need to store hot water for prolonged periods, a storage water heater would be more suitable. Storage heaters keep a large volume of water hot and ready for use over an extended time. In making your decision, consider factors like family size, frequency of hot water usage, and your living situation (permanent residence versus temporary accommodation) to determine the most suitable type of water heater for your home.