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Instant or Storage Water Heater: Which One Is Right for Your Home?

Are you thinking about getting a water heater but not sure if you should go for an instant or a storage geyser? Don’t worry. The choice is usually simple and depends on a few factors. Before we get into the details, let us first define the two categories. 

Instant vs Storage Geysers: Definitions

Instant and storage water heaters are two types of electrical water heaters for your home. Instant geysers are small geysers, usually of capacities 3 litres and 6 litres. They heat water in a very short period of time and deliver a steady flow of hot water. They come with PUF or glass wool insulation that helps to retain the temperature for long periods of time. Cascade instant geysers are compact in size, easy to install and dismantle, and consume a wattage of 3kW.

Storage geysers are generally suitable for higher consumption of water and come in capacities ranging from 10 litres to 300 litres. They are designed with PUF or Glass wool insulation to retain the temperature for more than 12 hours which further helps to consume less energy resulting in comparatively higher energy saving. They are relatively bigger in size and consume a wattage of 2kW.

Both categories of geysers from Cascade are reliable, durable, safe and energy efficient.

Factors to Consider

We have listed some of the factors that you should consider before deciding between instant and storage water heaters. 

#1: Purpose

Consider the intended use of the water heater – is it for your bathroom, kitchen, or utility area?

If it is for the former, there are other factors that need to be considered before you make a decision. These will be discussed below.

If it’s for your kitchen, such as sinks and washbasins, an instant geyser is recommended. Instant geysers provide hot water almost instantly, making them ideal for quick tasks in the kitchen or utility area.

Benefits of Water Heaters in Kitchens and Utility Area

Using hot water to wash dishes in your sink has many benefits. They, when used with cleaning agents, help in removing stubborn grease and burnt food quickly, and even disinfect the vessels. Hot water from sinks can also be used to clean kitchen surfaces effectively. It is also common to use warm water to bathe your furry friends outdoors or in your utility area. Instant geysers can be used for this purpose as well.

#2: Number of People

The next most important factor is the number of people using hot water in your bathroom. On average, one person consumes 15 litres of water during a bath. So we recommend that you go for an instant water heater only if there are 1 or 2 people at most primarily using the shower.

#3: Consumption and Seasonality

If you/ or the people in your household take long showers, or frequent showers during the day, then you might look at purchasing a storage water heater.

If you use hot water for showers seasonally, perhaps only during colder months, then instant geysers may be a practical choice. 

#4: Space and Budget Constraints

If your bathroom is very small with little space to add a geyser, then instant geysers are a compact solution.

If you are on a budget, and looking for a low-cost product, then instant geysers are your answer again.

#5: Location and Lifestyle

If your home is in a high-rise building, or if your home uses a pressure pump, then we suggest that you go for storage water heaters as they can heat water more efficiently in these situations.

On the other hand, if you are someone who moves houses frequently, then instant water heaters would suit you better as they can be dismantled and re-installed easily.

#6: Multi-Point Demand

For scenarios where hot water is needed at multiple points in the bathroom, such as the shower and washbasin, opt for a storage water heater with a higher capacity. This ensures a sufficient supply of hot water at various points.

In conclusion, choosing the right water heater for your home involves simple yet careful consideration of the listed factors. The decision between an instant and a storage water heater goes beyond mere preferences, requiring an understanding of your household’s specific needs and circumstances. If you still have questions, feel free to call us at 1800 425 0115, and we’ll be delighted to assist you.

Cascade’s Top Picks for Instant Geysers to Buy Online

fully white Cascade super instant water heater with red and green light panels transparent background

SUPER Instant Geyser

Cascade Super is a compact yet powerful instant geyser that blends well with any bathroom or kitchen. With 3 Litre capacity and copper heating element, Cascade Super is Hot Water Ready 24*7.


Its outer body is made of ABS. Acrylonitrile Butadiene Styrene (ABS) is an opaque thermoplastic and amorphous polymer. it is strong and durable. This also acts as an insulation leading to less power consumption. Aesthetically, it brightens up the bathroom.

MAX SIX Instant Geyser

Cascade Max is a super performer with high pressure compatibility. It is highly ECONOMICAL, ensures continuous flow of hot water and comes in 3 Litre and 6 Litre capacities.


With the innovative ReedySizzler Storage Tank, Cascade Max 6 L greatly reduces the mixing factor of cold and hot water, and at the same time drastically reduces the lead time for a bath without consuming any additional power. Max 6L delivers higher temperature than a 10L water heater thus establishing the advancement of its innovative tank design.  

tall instant water heater white transparent background

Cascade’s Top Picks for Storage Water Heaters to Buy Online

a hot pink and white coloured round cascade fantaxy water heater with Cascade logo on it and a white knob transparent background

FANTAXY Storage Geyser

The world’s best next-generation electric geyser. It features one of the most envied design “Flat On Wall” with a pure and solid Stainless Steel tank which fits perfectly in any bathroom, be it big or small. It is the Sleekest in the category.


It has a highly advanced Next Generation Conical-Sphere Tank that ensures Quicker Hot Water delivery and operates at higher pressure. Fantaxy Water Heaters deliver hot water at bath temperature in just 7 minutes. It also saves substantial power due to faster delivery and reduced residual heat.

TUFFY MAX SURGE Storage Geyser

Cascade Tuffy Max Surge Storage Water Heater – You will tingle with a warm bath in double quick time (Courtesy, her inner stainless steel tank), while she also stands solid with her safety features. Tuffy Max Surge has a very high pressure compatibility, is energy efficient and is the perfect solution for homes with high water consumption.


It can be installed vertically, horizontal right, horizontal left, floor and on the ceiling. This feature which only Cascade provides help customers to mount our electric water heaters almost anywhere.

cascade Tuffy Max Surge stainless steel water heater

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