Instant Geyser vs Storage Geysers- Know The Difference With Us

Know the difference between the Instant and Storage geyser. Take part in the discussion of Instant Geyser vs Storage Geysers.

When you walk into the market to buy the best geyser, you might encounter a quandary about whether to buy an instant geyser or a storage geyser. Because both of the geysers have their own advantages and disadvantages.

You can check the comparison from the space angle about the ideal water heater size. However, in this article, we have emphasized the importance of power consumption. The geyser is also known as a water heater.

Instant heaters are usually used for small uses like kitchen sinks or washbasins. Also, it is easy to fix/ install these types of geysers in small places. Now let us look at the bigger picture.

What Is An Instant Water Heater?

Before we step on to pass the further knowledge, you should take an idea as to what exactly compounds an instant heater/ geyser. As the name recommends, a water heater supplies hot water instantly and promptly.

Ordinarily, these water heaters have very low storage capacity. In the range of 1 to 3 liters. Therefore, it can easily fit in small places like sinks or basins. Any water heater having a storage capacity of over 3 liters is known as a storage geyser.

Also, you need to understand the power consumption of appliances. As the appliance heats water instantly, the range of wattage is higher, that is between 3 to 4.5 KW.

Time Taken By Water Heater For Heating Water

Storage water heater

The temperature of the water in the winter months in India can range from 4C to 21C. Besides, the water below the temperature of 4C gets difficult to flow through the pipes. The reason behind the fact is that it tends to become ice.

Estimate the absolute requirements whenever we consider the maximum warmth as around 400C and the crown temperature at 60C.

When the input water is around 14C, the instant heater tends to take about 2 minutes to heat the water to 60C and around a minute to heat it to 40C. However, if the input water temperature is higher at 21 celsius, it can take more than 30 seconds.

Instant Geyser vs Storage

Water Flow Rate

Water Flow Rate is an important feature when come to talking about the water heater. The quality of the heat and its process of heating depends on the flow rate of the water into the geyser. The tap flow also decides the water flow rate. The normal tap flow is around 3 liters/minute and for the showers, it is 8 liters/minutes.

Thereby, if you have an instant geyser of 3 liters, the water will heat up instantly as you empty the tank. The case of the shower is different. For showers, the flow rate is higher than the tap. Therefore, you might not get the right temperature.

Where Can You Use Instant Water Heaters?

As I have mentioned above, instant geysers usually have great use in washbasins or in the kitchen, where the usage of water is not very much. However, there are a few cases where you can use them in bathrooms as well.

For instance, if you are living in the southern part of India or any other place where the input water temperature is high. Like 20C or above. Contrarily, it is a great idea to opt for a storage water geyser. After hearing all about them, let us look at the drawbacks of the Instant Heaters.

Instant Geyser vs Storage

Drawbacks Of Instant Heaters

The standing loss of the Instant heater is at a minimum. There does not seem to be any power getting wasted. It looks great for use in the kitchen. However, it is always better to look at the great picture. We will acknowledge the drawbacks as well.

  • Fast heaters are responsible for delivering really hot water at optimal temperatures. Power consumption is on the high side in the range of 3 KW to 4.5 KW.
  • The final effects use 2 KW of inexpensive energy. If you heat 15 liters of water, both geysers will use the same energy. The only difference is that the instant geysers take less time. However, they put a lot of pressure on the system.
  • Now imagine the situation in a city like Delhi. Most people in the city bathe between 7 a.m. and 9 p.m. If each house was using an instant heater system, the load on the main grid would be greater leading to grid failure.
  • However, the storage geysers are different. They can measure the figure as they use the same power over a longer period of time. There will be no sudden rise in demand.
  • In the event of rapid geysers, fixed costs may increase. Therefore, you can save money over time but transfer it to fixed costs.

Instant Geyser vs Storage

Best Geyser/ Water Heaters Brands In India

As water heaters are usually installed permanently on the wall in the bathroom so these need to be durable and efficient in order to avoid repairs or purchasing of new heaters. Here we have discussed the best geyser in India/water heater brands in India that provide high-quality products, warranty, and after-sales support.


It was founded in 1926 by Jamnalal Bajaj in Mumbai. The group comprises 36 companies that involve various industries like automobiles, lighting, home appliances, insurance, iron and steel, travel, and finance.

This brand is India based brand and has therefore made a lot of impact on the minds of the consumers. These heaters are like an asset in any household as it runs for many years without any issue.

It’s a perfect choice for any Indian household. You can click on the below link to view some water heaters of Bajaj. It claims to be manufacturing the Best Geyser In India.


It is an Indian multinational company and its headquarters in Mumbai was founded in 1878. The manufacturing products are Transformers, pumps, HT & LT Motors, DC Motors, and Railway Signaling.

Crompton is a trusted brand for many home appliances such as geysers, air coolers, etc. The Crompton Greaves product with a CG logo marking its genuineness.

The Crompton water heater is now the bestseller in this category. You can click on the below link to view some water heaters of Crompton. It claims to be manufacturing the Best Geyser In India.


It is one of the largest electrical equipment industries in India and has its headquarters in Noida. Havells was founded in 1958 by Qimat Rai Gupta and Rajesh Saxena Bandar.

The company manufactures fast-moving electrical goods like home appliances, fans, lighting, and switchgear.

Havells is now a trusted brand in the market for home appliances like geysers, air coolers, etc. Havells is a perfect brand for those who make it a point to have all sexy appliances at home.

It is a perfect combination of style and design. You can click on the below link to view some water heaters of Havells. It claims to be manufacturing the Best Geyser In India.


The Racold is a part of the famous group Ariston Thermo which is engaged in producing heating systems. Racold is very efficient and used by millions of users all across the world.

The water heaters are efficient and durable. They are not only the first choice for many but also the best-selling brands all across the world.

These geysers are perfect stylish geysers imported from outside. You can click on the below link to view some water heaters of Racold. It claims to be manufacturing the Best Geyser In India.

AO Smith

AO Smith is an American-based company with its headquarters in Milwaukee, Wisconsin, United States. The brand includes the supply of water boilers, water heaters, dishwashers, etc.

AO Smith is engaged in producing great water heaters and is one of the best-selling brands in this category.

The water heaters are durable, efficient as well as budget-friendly. You can click on the below link to view some water heaters of AO Smith. It claims to be manufacturing the Best Geyser In India.


It is a subsidiary of Videocon which was founded in 1979 by Venugopal Dhoot.

The headquarters are in Mumbai. This brand has 15 sites all over the world including India. Kenstar is a brand of home appliances by the company Kitchen Appliances India Limited in 1996.

It manufactures all home appliances like Television, air coolers, water heaters, etc.

Kenstar is a newer company as compared to Bajaj and Symphony however it has made a position in the market because of the durable and quality products. It claims to be manufacturing the Best Geyser In India.

You can click on the below link to view some water heaters of Kenstar.
The brands are not ranked in any particular order, these are just a list of our assumptions by researching the best geyser in India or water heater brands.

Frequently Asked Questions About Instant Geyser vs Storage

What are the best Water Heater Brands?

The best brand ensures quality, efficiency, and good after-sales service. From so many brands here comes the best ones- AO Smith, Havells, Crompton, Bajaj, Racold, V-Guard, and Kenstar.
They offer geysers with a capacity of 10L-35 L. They are available on Amazon and so many online shops. Some of them provide free installation. Even if it is paid they are always better than a calling local plumber

Can I install the Geyser myself?

We never recommend you to install a geyser yourself until you are not a professional. We will also advise you to avoid local plumbers as they don’t follow safety measures and are often not very professional.
It is better if you seek help from an Authorized Service Center. Some manufacturers provide installation service when you purchase a new item.

How wattage is related to heating time?

The wattage of a geyser is directly related to the time taken for heating water. The more wattage the faster will be the heating.
For instance, a 4 K.W geyser will heat the water faster than a 2 K.W geyser. It can prevent hot water wastage; however, greater wattage will also increase the monthly electricity bill.

Is it normal for the electric water heater to make noise?

Yes, a faint noise, once the water inside the tank has reached the desired temperature is normal. However, if you hear banging, hissing, or knocking sounds, call customer service. This might be due to the unwanted limescale deposits in the tank. You might even want to check the heating element.

Why is my heater releasing water?

It is common for modern water heaters to release a small amount of water now and then. This is to maintain the internal water pressure in the tank.
A multifunctional safety valve keeps the water pressure and temperature in check and prevents the tank from leakages and bursts.

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