What’s the difference between tank and tankless water heaters?

Tank water heaters store a set amount of hot water, ready for use. Tankless heaters heat water on demand, are more energy-efficient, but cost more upfront and require proper installation.

Which one is more energy-efficient?

Tankless water heaters save energy by heating water only when needed, avoiding standby losses. Tanks may use more energy but suit larger households with simultaneous hot water demands, depending on usage patterns.

Which one is better for my home?

Tanks are cheaper and easier to install, ideal for moderate use. Tankless saves space, provides endless hot water, reduces energy costs, but may need upgraded gas lines or electrical systems.

The Ultimate Comparison: Tank vs. Tankless Water Heaters in 2025

Tank water heaters are big containers that store hot water all the time. They keep water hot so it is ready whenever you need it. Tankless water heaters do not store water. They heat water only when you turn on the tap, so you get hot water on demand. It really depends on what people want and need in their house.

By : Aman Tiwari
Last Updated on Oct 28, 2025 14:51 IST
Published on Oct 28, 2025 14:50 IST

Tank vs. Tankless Water Heaters: Amazon Picks

Have you ever wondered which is better for your house? Tank or a tankless water heater? Tank water heaters from the best geyser brands like Haier and A.O. Smith store a decent amount of water hot all the time. That serves as a convenience because you can turn on the tap and hot water is ready for a shower or for washing dishes. The downside is that they use energy all the time so the bills can run a little higher. Tankless heat water only when you need it. They save energy and take up less space but if more than one person uses hot water at once the flow can slow and the water can feel warmer. They also tend to cost more to install at first. We listed some models from Amazon to compare prices and user reviews. In the end it really depends on your home and how many people use hot water.

Feature	Tank Water Heater	Tankless Water Heater
How it works	Stores a large amount of hot water all the time	Heats water only when you turn on the tap
Energy use	Uses energy constantly to keep water hot	Uses energy only when water is needed
Space	Takes up more space	Compact and takes up less space
Flow	Can handle multiple taps at once easily	Flow may slow if multiple taps are used at the same time
Cost	Usually cheaper to buy and install	Higher upfront cost for unit and installation
Lifespan	Around 10–15 years	Around 20 years or more
Convenience	Hot water is ready immediately	Hot water is on demand, no storage needed

Faber Agnes Tankless Instant 3.5kw Water Heater
Have you been fed up with waiting for your old geyser to warm up? The Faber Agnes Tankless Instant Water Heater might be just what you need. It runs on 3500 watts and gives hot water in under 3 seconds, yes really seconds. With a flow of about 3 liters per minute it is fine for daily showers and washing. It can handle up to 8 bar pressure so it works well in high rise apartments and on higher floors. The unit is compact at 27 x 15 cm so it will not take much wall space. Safety is covered with overheat protection, auto off and a safety valve so it should feel safe to use. Installation will need a qualified electrician and the upfront cost can be higher, but the quick heat and space saving can make it worth a look.
Who Is It For?
- This Tankless water heater is ideal for families or individuals in apartments or high-rise buildings who need quick, reliable hot water without taking much space
User Reviews and Rating
- Rating: 3.1 out of 5 stars 159 ratings
- Feedback: Users like the fast heating and compact design but a few mentioned inconsistent temperature control
Bank Offers and Deals
- EMI: Starts at 242 rupees per month, No-Cost EMI available
- Bank Discount: Up to 4000 rupees off on SBI Credit and Debit Cards
- Cashback: Up to 149 rupees with Amazon Pay ICICI Bank cards
- Partner Offer: Buy 2 or more for 3 percent off
Specifications:
- Power:3500 Watts
- Capacity:3 liters
- Working Pressure:8 Bar high pressure
- Temperature Control:3-level adjustable
- Safety Features: Overheat protection, safety valve, auto-off
Reasons to buy:
✓Compact and space-saving design, easy to install
Reason to avoid:
✗Some users report small fluctuations in water temperature
01
Haier Precis pro Water Geyser 10 Litre 5 Star 2000W Electric Storage Geyser
The Orient Electric Enamour Classic Pro 25L geyser on Amazon feels pretty solid. Water heats really fast so no waiting for a warm shower, which is a big plus. The body feels strong and safe, shock proof and splash proof, making the bathroom setup more secure. The copper heating element looks reliable and should last a long time. The whirlflow technology gives almost 20 percent more hot water, very handy when everyone in the family wants a bath. Good insulation keeps water warm for hours, so no need to turn the geyser on again and again. Works well in high rise buildings with up to 8 bar pressure. Overall, big enough for a family, simple looking but not ugly, and just works without any fuss.
Who is it for?
This Haier Water geyser is great for families or anyone who needs a reliable water heater that can handle multiple showers in a row. If you live in a high rise or want something safe and long lasting, this is a solid pick.
User Reviews and Star Rating
- 3.9 out of 5 stars from 715 ratings
- Most people love how fast it heats water and say the whirlflow tech actually works. A few mentioned it is a bit large and takes space, but overall people feel it is safe, durable, and worth the price.
Bank Offers and Deals
- Price: 5,349 rupees with 68 percent off MRP 16,490 rupees
- No Cost EMI: Starting 259 rupees per month
- Bank Offer: Up to 4,000 rupees discount on SBI Credit or Debit Cards
- Cashback: Up to 160 rupees using ICICI Amazon Pay Credit Card
Specifications:
- Model:Enamour Classic Pro
- Capacity: 25 Liters
- Tank Type:High Pressure Epoxy Coated
- Pressure Compatibility:Up to 8 bar
- Heating Element:Copper
Reasons to buy:
✓Compact and light, easy to install indoors
Reason to avoid:
✗Some people say it is not very durable and might have issues after long use
02
EcoSmart ECO 8 Tankless Water Heater, Electric, 8-kW - Quantity 1, 12 x 8 x 4
The EcoSmart ECO 8 tankless water heater is one of those gadgets that makes you wonder why we ever used big bulky storage tanks in the first place This small box runs at 8 kilowatts and claims almost perfect 99.8 percent efficiency which means it uses nearly all the energy you pay for It delivers between 0.8 and 1.9 gallons per minute which is fine for a shower or sink unless of course you are trying to heat a swimming pool The LED display lets you set the temperature exactly because apparently just saying warm is not enough At only 2 kilos it is light enough to hang on a wall without looking like a spaceship control panel In short it gives hot water on demand saves space and tries to look smarter than your normal geyser.
Who Is It For?
- This one is best for small families, single users, or offices where you just need hot water for one shower, sink, or a breakroom. If you live in a place where space is tight, this compact model works really well.
User Reviews & Rating
- Rating: 4.2 out of 5 stars (based on 668 ratings)
- Reviews: Most people like that it heats fast, works quietly, and saves electricity. A few mentioned it struggles a bit if the incoming water is very cold in winter.
Bank Offers & Deals
- EMI: Starts at ₹1,672 per month, with No-Cost EMI available
- Coupon: Extra 2% off (limited offer)
- Cashback: Up to ₹1,034 with Amazon Pay ICICI Bank cards
- Bank Discount: Up to ₹4,000 off with SBI Credit/Debit cards
- GST Invoice: Save up to 18% on business purchases
Specifications:
- Model:EcoSmart ECO 8 Tankless Water Heater
- Power::8 kW (8,000 watts)
- Voltage::240 Volts
- Flow Rate::0.8 to 1.9 gallons per minute (around 2 GPM max)
- Efficiency::99.8% (almost no wastage)
Reasons to buy:
✓Heats water instantly and gives continuous hot water, no waiting.
Reason to avoid:
✗Very energy efficient (almost 100%) so saves on bills over time.
03
V-Guard Divino Geyser 15 Litre Wall Mount Water Heater
The V-Guard Divino 15 litre water heater feels really sturdy and looks like it can last for years even if the water quality is not the best. Water heats up pretty fast with the 2000 watt Incoloy 800 heating element, and the thick PUF insulation keeps water hot for a long time, so no need to keep switching it on again and again. The tank has a vitreous enamel coating which fights rust and scaling, so it works fine even in hard water areas. The single weld line tank design cuts the risk of leaks a lot, maybe around 66 percent, and the thick magnesium anode rod gives extra protection inside. Safety is taken care of with dual overheat protection and a 5 in 1 safety valve for pressure or vacuum problems. The thermostat knob lets you set the temperature anywhere from 35 to 75 degrees. It is compact, looks simple but neat in the bathroom, and feels solid when installed. Overall, it is safe, reliable, and built to handle regular use without much fuss.
Who is it for?
- This 15 litre water heater is perfect for singles, couples, or small families who want a durable, safe, and reliable geyser that can handle hard water and heats quickly without wasting energy.
User Reviews and Star Rating
- 4 out of 5 stars on Amazon
- Users appreciate how fast it heats water and the build quality. A few note that 15 litres is too small for larger families, but overall it is considered safe and long lasting.
Specifications:
- Model: V-Guard Divino
- Capacity:15 Litres
- Heating Element::2000 Watt Incoloy 800
- Tank Type:Vitreous enamel coated
- Insulation: Thick PUF
Reasons to buy:
✓Heats water fast and keeps it hot for longer
✓Rust and leak resistant with strong build
Reason to avoid:
✗Only 15 litres, might not be enough for bigger families
04
Jyoti TL 5.5 kW Tankless Instant Water Heater
If you are still standing in your bathroom waiting for a normal geyser to finally get warm, the Jyoti TL 5.5 kW tankless water heater gives hot water in about five seconds, because apparently people today do not have time to wait. It can give a continuous flow of up to six liters per minute, which is just enough for a proper shower, unless you are trying to run three taps at once, then maybe call the fire department. The LED touch thermostat makes it look like something from the future, while also giving you exact control over the temperature, because “warmish” is apparently not good enough. It also comes with overheat protection, auto shut-off, and a complete separation of water and electricity, trying real hard to keep you safe. Light weight, small, and wall-mounted, it is the perfect alternative to those big 10 or 15-liter storage geysers that take up space and your patience.
Who Is It For?
This water heater is perfect for small families or individuals living in apartments who need quick, reliable hot water for showers or sinks. It is also good for people who want to save space and avoid big storage geysers.
User Reviews & Rating
- Rating: 3.6 out of 5 stars (6 ratings)
- Feedback: Users like the fast heating and continuous flow. Some mentioned installation requirements are a bit strict.
Bank Offers & Deals
- EMI: Starts at ₹412 per month, No-Cost EMI available
- Bank Discount: Up to ₹4,000 on SBI Credit/Debit Cards
- Cashback: Up to ₹254 with Amazon Pay ICICI Bank cards
- Partner Offer: GST invoice available
Specifications:
- Model::EcoSmart ECO 8 Tankless Water Heater
- Power::8 kW (8,000 watts)
- Voltage::240 Volts
- Flow Rate::0.8 to 1.9 gallons per minute (around 2 GPM max)
Reasons to buy:
✓Compact and space-saving design, easy to install
Reason to avoid:
✗Some users report small fluctuations in water temperature
05
AO Smith Geyser 15 Ltr With 5 Star BEE Rating, Vertical Water Heater
The AO Smith 15 litre geyser is really good if fast hot water is needed, and no one wants to worry about changing it every few years. It has a strong 2000 watt heating element and a Blue Diamond glass lined tank that fights rust, so it lasts much longer. It works well in high rise buildings because it can handle up to 8 bar water pressure without any problems. There is also a special anode rod that protects from hard water damage. It saves power as well, since it is 5 star rated and does not use too much electricity. The compact round design fits nicely in small bathrooms, but still gives the full 15 litres of hot water. On top of that, it comes with free basic installation, which makes setting it up much easier. Overall, it feels safe, reliable, and built to last.
Who is it for?
- This AO Smith geyser is perfect for singles, couples, or small families who want a reliable, long-lasting water heater that works well in high-rise buildings, saves electricity, and heats water quickly.
User Reviews & Star Rating
- 4.4 out of 5 stars from 12,702 ratings
- Most users like how fast it heats water and the durability. Some note that extra fittings are not included in the free installation, but overall people are happy with the performance and reliability.
Bank Offers & Deals
- No Cost EMI: Starting 436 rupees per month
- Bank Offer: Up to 4,000 rupees discount on SBI Credit or Debit Cards
- Cashback: Up to 269 rupees using ICICI Amazon Pay Credit Card
- Partner Offer: GST invoice available for business purchases
Specifications:
- Capacity:15 Litres
- Power: 2000 Watt
- Tank: Blue Diamond glass-lined
- Pressure Compatibility:Up to 8 Bar
Reasons to buy:
✓Durable: Blue Diamond tank and anode rod give longer life even with hard water
✓Efficient: 5 star rating helps save electricity while heating water quickly
Reason to avoid:
✗Extras: Free installation does not cover hoses, pipe nipples, or electrical fittings which may add cost
06

Comparions Of The Best Water Heater Types: Tank Vs Tankless

Brand & Model	Type	Capacity / Flow	Power / Pressure	Key Features
Faber Agnes	Tankless	3 L	3500 W / 8 Bar	Heats in 3 sec, compact, safety features
EcoSmart ECO 8	Tankless	0.8–1.9 GPM	8 kW	High efficiency, LED temp display
Jyoti TL 5.5 kW	Tankless	6 L	5.5 kW / 6 Bar	Fast heating, LED thermostat, lightweight
Orient Enamour Pro	Tank	25 L	High Pressure / 8 Bar	Copper element, whirlflow tech, insulated
V-Guard Divino 15L	Tank	15 L	2000 W	Vitreous enamel, safety valves, compact
AO Smith 15L	Tank	15 L	2000 W / 8 Bar	Glass-lined tank, anode rod, 5-star energy

Disclaimer: At Jagran, we prioritize providing the up-to-date information on the latest trending commodities and goods. This Article is written and vetted by our in-house category authors in sync with the Google guidelines on product reviews and shoppable content. Jagran is in an associate partnership, so we may earn a part of the revenue when you make a purchase. We shall not be liable for any claim under applicable laws, including but not limited to the Consumer Protection Act, 2019, concerning the products. The products listed in this article are in no particular order of priority.

Faq's

What’s the difference between tank and tankless water heaters?
+
Tank water heaters store a set amount of hot water, ready for use. Tankless heaters heat water on demand, are more energy-efficient, but cost more upfront and require proper installation.
Which one is more energy-efficient?
+
Tankless water heaters save energy by heating water only when needed, avoiding standby losses. Tanks may use more energy but suit larger households with simultaneous hot water demands, depending on usage patterns.
Which one is better for my home?
+
Tanks are cheaper and easier to install, ideal for moderate use. Tankless saves space, provides endless hot water, reduces energy costs, but may need upgraded gas lines or electrical systems.

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Comparions Of The Best Water Heater Types: Tank Vs Tankless

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