Water heating devices or a geyser is a basic appliance that is required for daily use. Geysers have gained lots of popularity in the past few decades due to the various benefits they offer. To allow you to make the ideal choice between instant vs storage geyser, we’re going to explore each one’s attributes, performance, advantages, in addition to disadvantages

Which Geyser Is Best For Bathroom? Instant Vs Storage Water Heater

Choosing between an instant geyser and a storage geyser can be a daunting task, mainly if you aren’t tech-savvy. So, which geyser is the best, instant, or storage geyser? Peruse the article and get to know more about the instant geyser vs storage geyser debate.

How Does The Instant Geyser Work

Instant Water Heater

These devices feature a comparatively smaller storage capacity of between 1 and 3 liters and have a 3-5 to 5 kW heating rate. It’s imperative to be aware that any geyser with over 3 liters’ storage capacity is known as a storage geyser.

An instant geyser demands a quantity of flow rate because of its heating unit to be triggered. A substantial number of geysers run on a minimum flow rate of 0.5 GPM. They’re relatively simpler to operate, and as soon as you switch on the hot water button, cold water will enter into your instant geyser through the inlet pipe. The system will detect the presence of flowing water and will then activate its heating unit.

The heating system will, in turn, heat the trades as the cold water moves through it. This heated water is then passed through the outlet pipe where now you can use it.

1. How to Use Instant geyser

The first thing you have to do is be sure that there’s a flow of water to the instant geyser and don’t open the outlet.

Allow the water to get heated for about 60 minutes to get a 3KW instant geyser Always watch for the neon sign that suggests that the water is hot enough for bathing.

Suppose your instant geyser doesn’t have the neon sign. In that case, it is possible to open the socket to adjust the flow to allow hot water with the needed temperature to flow out.

2. Advantages And Disadvantages Of Instant Geyser


A. Less Energy Consumption: Although an instant geyser’s energy intake per minute is comparatively higher, it warms the water immediately, making them more energy-efficient compared to their storage geyser counterparts that take more time to heat water. Concerning water efficiency, it’s estimated that you can save as much as 24-34% on your energy costs when using an instant geyser in the event you use forty gallons of water every day.

B. Space Saving

Contrary to their bulky storage-type geysers, instant geysers are modest in proportion hence require comparatively smaller wall-mounting space. They feature a compact design that can easily match in a limited space. What is more, they will enhance your home decor due to their appealing and stunning design.

C. Increased Durability

These kinds of geysers are equally long-lasting. It’s projected that an instant geyser will offer an elongated uninterrupted service, between 15 and 20 years. And when your device is gas-powered, you can enjoy a few more years! If you want geysers with long durability, check out our reviews on gas geysers.

D. Highly Convenient

It is only going to take a few minutes for your instant geyser to generate hot water. This can be a massive advantage, bearing in mind that a storage geyser requires as much as five minutes to create hot water.

E. Usability

These geysers have great use in kitchens and washbasins where water is used in small quantities. In case you want to utilize them in a bathtub, the instant water heater may serve you right if you belong to the southern part of India since the input water temperature will be within the selection of 20C. Otherwise, it is always helpful to select the storage water heaters.

F. Lifespan

Since designed to have a longer lifespan, the instant geysers tend to last for 15-20 years with appropriate care and maintenance.


A. Maintenance

Instant geysers are incredible machines offering a good deal of benefits. However, like any other electrical device, they need regular maintenance to function at optimum levels.

Of course, this shouldn’t be a significant issue because maintenance should only improve your general geyser efficiency. So, technically, this shouldn’t be regarded as a disadvantage!

B. Water Flow Rate Issue

Quite a range of instant geysers will only operate with a water flow rate of 0.5 GPM. If the flow rate is low, this kind of geyser won’t function.

C. Installation Charges

The setup charges of an instant water heater are relatively high when compared to a storage water heater. Furthermore, if you’re planning to replace an old unit with a new instant one, that also will be costly. Your plumber will need more time to do this, which in turn will increase the installation price.

D. Load on System

Because the instant water heaters have to give water at the desired temperature, the speed at which it attracts power at any time is too high. Therefore a storage water heater could consume 2 kW of power; while an instant water heater consumes around 3 to 4.5 kW. Suppose 15 gallons of water is heated either, even though the units consumed might be precisely the same. Still, since the instant water heater heats it instantly, it draws more power from the machine. In that case, i.e., it puts more load on the system.

How Does A Storage Geyser Work

Storage Water Heater

These kinds of geyser units come equipped with appreciable storage space to save hot water for later use. Tank storage geysers consist of two pipes; an inlet for cold water and a socket for the heated water. The storage geyser works on converting electrical energy into heat energy, using the heating elements to increase the temperature of the water available from the tank. Unlike offering a constant supply of hot water, this kind takes a while to heat the whole water for use and even store the remaining from the available storage area. You may use the stored hot water anytime afterwards based on your need and requirement.

With its easy usage, design, and affordability, storage geysers are a popular option amongst a broad selection of users.

Advantages And Disadvantages Of Storage Geyser

Advantages Of Storage Geyser

A. Ability To Store Water

 With this kind of geyser available, your quest for warm water may not always be dependent on the availability of power. This is because they can store the heated water and provide a few gallons even when facing a power outage.

B. Easy Installation

The setup charges of a storage water burning unit are quite feasible when compared to other people. Setting up an appliance is one thing that will always bother you once you’ve made the purchase, and an intricate installation can be a big turn off. Tank storage geysers guarantee easy installation, exactly like tank-less instant geysers.

C. Less maintenance

The machine of a storage water heater is pretty easy, meaning you will be spending less on the upkeep and repairs.

D. Repair price.

In the long term, if the storage device starts to malfunction, the repair charges aren’t that high. 

Disadvantages Of Storage Geyser

A. Needs More Space

Storage geysers require a great deal of installation space. So settling for this sort of water geyser is not the best idea for those who have a smaller space quantity.

B. High Energy Consumption

Storage geysers take some time to warm water. They re-heat it if kept heated water obtained used, and this repetitive process contributes to increased energy prices.

C. Inconvenient

It will take a substantial period for this kind of geyser to warm water, usually between 5-10 minutes. And if you happen to run out of hot water, then you will be forced to wait for quite a while until you get to use hot water.

D. LifeSpan

Storage units have a shorter service length than instant units; they have to be replaced more frequently than instant water heaters.

E. Suitability

This sort of water heater isn’t acceptable for a house with several members; However, every member will have sufficient hot water to use. The energy bills will grow dramatically as the device is in continuous use. 

Difference Between Instant Geyser And Storage Geyser

FeatureStorage geyserInstant geyser
Wall distance.It’s in a sizeable wall-matting placeIt’s in a Tiny wall-mating Spot.
Accessiblegeyser size 6 to 35 liters1, 3, 6, and 10 liters
Water heating costAfter a while, hot water is stored to be used.Hot water needs to be utilized immediately.
Best Acceptable forBathing with a bucket or a shower.Kitchen utensils, hand washing, bathing with a bucket
DelayShould wait 5 minutes for the water to warm uphot water instantly comes on when you turn on the geyser.
ConvenienceNo break during the bath, get all water before tub Breaks throughout the tub.The geyser releases a maximum of 6 liters of water and should wait for more water throughout the tub.
Geyser Pricelittle less, 10-liter storage geyser prices 6K — 8Klittle greater, the 6-liter instant geyser prices 6K — 8K.


When you look at it from an economical and functional perspective, In the battle of instant geyser vs storage geyser, an instant water heater is the best solution for each house owner. Even though it might have its fair share of disadvantages, the pros outweigh them. So if you’re planning to install a water heater in your home, you should choose instant water heaters. They live up to their title, and they can be trusted to offer you a generous stream of hot water at all times! In our reviews of the best geysers in India, we have covered Instant and Storage heaters. You can read that review to choose the best geyser for your home. If you have any queries after reading the reviews or about the best geyser for you, let us know in the comments section below.

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One Comment

  1. I have an instant geyser but when I open the hot water tap ,there is hot water for a few seconds an the the water is cold

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