If you are wondering what size geyser would be enough for your uses, you have come to the right place. We have listed down everything you need to know about water heater capacities, along with the answer to the question, is 3 litre geyser enough for bathroom? Well, the short answer is – it depends. You cannot say for certain unless you have enough information. Specifically about how many people would use the water heater, how much will it be used per day, and everything in between.

Since it says 3 liters, we think you might be talking about an instant water heater. A 3 liter storage water heater is not really available, neither will it be any good in a bathroom situation, just hypothetically.

Let us look at what geyser capacity should you aim for, and everything you need to keep in mind while buying a water heater for your bathroom.

Is 3 Litre Geyser Enough for Bathroom? – Understanding Geyser Capacity

So, when it comes to choosing a geyser for your bathroom, most times than not, you should over-compensate for your needs. The first thing however, is to see how many people would use the geyser on a daily basis. If it is just you, then getting a 3 liter instant water heater is a great idea. You will potentially have hot water for days when its capabilities are put against your usage.

If you have a few people in your family, a 3 liter water heater might slowly give in and eventually not be able to keep up with the demands. What to do in this case? Well, buy a geyser with a higher capacity.

Here is a guide on how to choose a water heater, and a guide on water heater capacities to see which one would fit best for your needs and requirements.

Instant Water Heater Capacity – How to choose the best one for your usage?

When you are out buying yourself the top 10 best instant water heater in India, the first thing you do after you have selected what type you need, is to look at the capacity of your desired product and figure out how much would be ideal for you.

Size of FamilyGeyser TypeIdeal Geyser Capacity
1 to 2 membersInstant Geyser2 liters
2 to 3 membersInstant Geyser3 liters
4 to 6 membersInstant Geyser4 liters
6 to 10 membersInstant Geyser5 liters

Is 3 Litre Geyser Enough for Bathroom?

Well, yes. If you are living alone, or have no more than 3 or 4 people in your house, you can easily survive with a 3 liter instant water heater in your bathroom. You will have ample hot water to use, and would find that you are not paying excessively for its usage.

However, before you get to deciding on the 3 liter instant water heater, we suggest you take a look at our guide on what capacity water heater should you aim to purchase. This will comprehensively help you on your quest to find the most effective water heater for your bathroom.

What Capacity Water Heater should you choose?

There are a few things you would need to keep an eye out on when choosing a water heater. The capacity of a water heater is one of the primary factors to look for, and something that will dictate how well you can use your water heater. That said, there are other things to look for too to make sure your geysers functions just the way you intended.

These factors will also affect what capacity water heater proves the best for your usage.

1. Size of your family

One of the primary things to look at is how many people would be using the water heater. If you are living alone, getting a small instant water heater can prove the most effective. However, if you live with your family, you would have to check for the overall usage and then make a decision.

As a rule of thumb, for 3-5 people the best water heaters are generally around 15 to 25 liters in capacity. You can easily heat enough water to suffice the needs of most of your household in just a single run of the water heater. If you get a smaller water heater for a larger family, you will find your electricity bills rising by quite a bit.

For people living alone, an instant geyser is also a great option. You neither have to wait for heated water, nor would you have to spend a lot as utility bills. Families do better with storage water heaters.

Number of membersWater Heater Capacity (Storage)Water Heater Capacity (Instant)

2. Climate of the region

This is also a crucial point in understanding which water heater to purchase. Obviously, colder regions will have the need for a geyser more than someone who lives in a hotter climate. Electricity usage to heat water in colder regions is also higher. But the bottom line is that people in colder regions might have to invest in a bigger water heater to suffice the needs of the entire household. People living in the plains where winters last no more than a couple months, a smaller water heater would be just alright.

Also read: Best Geysers Guides, Reviews & Comparisons

Buying a bigger water heater when you do not have the need for it would only result in higher electricity and other utility bills, while the heated water will remain unused. It is crucial to figure out how much usage your geyser will see once you have bought it. It is not necessary to get a bigger geyser if you will not find the right use for it. Even if you have a bigger family, a little hot water can go a long way, especially in the really hot places.

3. Total water consumption of your household

One of the other important factors in choosing the right capacity for a geyser is to figure out how much usage your household sees. For example, if you need hot water in both the bathroom and the kitchen, you might have to get different water heaters for both these places.

In kitchens, instant water heaters work the best since you need only a limited amount of water. While in bathrooms, storage water heaters work the best. In the bathroom situation, you would also have to look at the type of baths you tend to take. If you shower, you might need a larger geyser. While if you take a bucket bath, a smaller geyser might suffice. Also, if you like the bath tub, you might need a much bigger water heater to take care of your needs.

Frequently Asked Questions (FAQs)

What sizes do geysers come in?

Geysers come in a variety of formats and sizes and capacities. If you are looking for an instant geyser, they go up to 6 liters, while storage water heaters can easily go up to 30+ liters. If you have a large family and the need for so much hot water, invest in a bigger geyser. On average, a 4 people family would need a storage geyser of around 25L. Refer to this article about geyser capacity to know more.

Is 15 liter geyser enough for 4 person?

A 15 liter water heater might not actually be enough for a family of 4. For bathing purposes, an average bath usually takes about 15 liters of water. So, if you have 4 people in your family, get a geyser with at least 25L capacity.

What size geyser do I need for a family of 5?

For a family of 5, a 25-30L water heater proves enough. Anything more than that will only be more helpful. Anything lower than that would not be enough for your entire family.

Is 25 liter geyser enough?

Yes, a 25 liter geyser is quite enough for a family of 4-5 people. Even if there are 3 people, a 25L geyser works really well. Do be aware that a 25L geyser will cost a bit much to purchase.

Which type of geyser is best for bathroom?

If you are looking to buy a new geyser for your bathroom, you can either get a storage kind, or an instant one. Yes, you can get a gas geyser as well, but they are not as effective to use in a single bathroom. Instant water heaters are great to preserve space and manage 3-4 people’s needs. While storage geysers tend to be big and bulky and can handle a bigger family with ease. Only make sure you purchase a geyser with a capacity in line with your requirements.


In conclusion, yes, a 3 liter water heater might be enough for your bathroom. However, geyser capacities are highly subjective and must be adjusted according to the usage they see. Basically, if you have more than 2 or three people living in the house, a 3 liter instant water heater might still make it through all the work you put it through. However, if you add a couple more people to the mix, you might find that a 3 liter water heater does not prove enough. Refer to our chart above, and figure out what capacity water heater is best for your uses.