Electric Storage Water Heaters/Geysers

With the start of November, few parts of our country might have already started feeling the nip in the air and then we know that it’s time to take stock of our winter paraphernalia, beginning from quilts and woollens to electric heating devices including room and water heaters. This report is a result of our efforts to find out the best storage water heater/ geyser as per individual requirements, taking into consideration factors such as water usage, electricity consumption, standing loss, energy efficiency and longevity.

By best we mean the one that is not only efficient in terms of electricity consumption or heating capabilities, but also the safest. If you are planning to buy a new geyser, you may very well end up being puzzled by the types of geysers, models and sizes available. What you eventually choose will depend mainly on the purpose of the hot water, where you install the apparatus, bathroom spacing, your preference for instant geyser or storage geyser, and yes, your budget. Know that just the brand name may not be sufficient to base a buying decision on. While traditional electric water heaters are huge in size and consume high energy, their modern counterparts are relatively energy-efficient and produce hot water as per need.

While thinking to buy a water heater questions might be like which is the best brand, what size or capacity should I buy, which type of geyser will fulfill my needs, whether a 3-star geyser will do the job, or should I buy a 5-star geyser as there are multiple brands and types of geysers to choose from. This report can help you and will give you a fair idea of buying geyser.

Type of water heater/geyser

The first decision is necessarily about the heating method: electric or gas?
An electrically heated storage-tank system is usually relatively cheap to buy and install, but is usually the most expensive to run, especially if it’s on the continuous (full day) rate. Electric instantaneous water heaters are also available. An LPG water heater is a good option if you want an instant water heater. It’s cheaper than the electric type.
Then there is the solar water heater (SWH), which is the conversion of sunlight into heat for water heating using a solar thermal collector. A sun-facing collector heats water that passes into a storage system for later use. You need a large tank to allow for days with less sunlight. If your panels cannot be installed in an ideal location, they may be less efficient and you will then need a larger collection area.

Storage tank or instantaneous heater

The next decision is between a water heater with storage tank and one that heats water instantly.
Most electric, gas and solar water heaters have a tank. Stainless steel tanks are more expensive but generally last longer and do not require as much maintenance as mild-steel tanks. Water heaters with copper tank are best but costlier.
Instantaneous or continuous-flow water heaters give only as much water as you need, when you need it. They are not truly instantaneous, though– it can take a few seconds before hot water starts flowing from the tap, especially when there is a fair distance of the pipe between the water heater and the tap. Instantaneous water heaters are available in gas and electric models. There are no heat losses; they are often cheaper to run than storage systems.

INSTANT VS STORAGE WATER HEATER COMPARISON

  Instant Storage
Wall space It occupies small wall-mouting space It occupies large wall-mouting space
Delay Hot water comes immediately Need to wait up to 5 minutes
Convenience Need to wait for more water during bathing Get all the water before the bath
Geyser Price Little less Little high
Water heating cost less little more
Best suitable for Washing utensils, hand wash, bathing using bucket

Bathing using bucket and bathing using

shower

Available size 1, 3 10 – 35 liters

 

Household size and water usage

What the right size of water heater is will depend on how much hot water you use. For a small household (about 2 persons), an instantaneous water heater (gas or electric) will do just fine. For a medium- size household (3 to 4 persons), gas systems (instantaneous water heaters or storage) may be preferred. For a large household (5 persons+), multiple instantaneous water heaters may be an option; gas storage units may be more economical but are equally risky due to release of carbon monoxide in the closed toilets.

Energy efficiency/star ratings

Electric water heaters have energy-efficiency star rating labels; the more the stars, the more efficient is the water heater. The highest rating is five stars. The modern tank less water heaters are much more energy- efficient than the traditional ones. When the water in the tank cools off, the power kicks in and heats it up again. An energy-efficient water heater saves you money on your monthly electricity bill. Before buying a water heater, look for one with a higher star rating.

Space matters

A conventional water heater is bulky in size and may take up a good amount of space in your house. On the other hand, a tankless water heater is compact in size and takes up significantly less space than a conventional tank.

Longevity

A tankless water heater’s longevity is more than that of a hot-water tank heater because the latter is subject to decay. A tankless on-demand water heater’s lifespan is approximately 20 years, compared to 10 to 15 years for a tank-type water heater. Tankless water heaters also have easily replaceable parts that extend their life.

Features to Consider

Auto-off

This is a very useful feature and needs to be present in all appliances. In a heater with the auto-off feature, the appliance automatically turns off thereby preventing unnecessary power consumption.
Power consumption: A water heater may contribute as much as 15 per cent of your electricity bill. Winters are when you usually make most use of your water heater and hence its energy efficiency should be considered. Nowadays all home appliances are star-rated and opting for products with high star ratings is advisable.

Capacity

The capacity of the water heater is important to consider. It is advisable to opt for instant water heaters for small requirements as it is budget-friendly and occupies very less space as compared to water heaters with storage tank.

Hard water

Hard water is high in dissolved minerals, both calcium and magnesium. This kind of water requires special attention when you are buying a water heater. You will need to go for a corrosion-resistant tank and also install a water softener so as to reduce the water hardness.

Safety

Water heaters come with a thermostat capable of heating water up to 60 degrees – this also means you should be sure of mixing the water with normal to cold water. Most of the branded storage water heaters carry the ISI mark—assuring one of basic safety parameters.

Warranty

Warranty coverage for most water heaters is 1 year to 2 years. Choose a water heater with the longest warranty. Always check ISI mark on geyser before buying. ISI mark on geyser means that geyser quality meets Indian standards and it is safe to use.

Be Smart and Follow These Tips

  • Buy branded electric water heaters
  • Look for a product with the ISI Mark to ensure
  • Five-star rating is
  • By reducing the temperature setting of wa- ter heater from 60 degrees C to 50 degrees C, one could save over 18 per cent of the energy used at the higher
  • To select the right water heater for your home, you need to consider family size and whether your usage will be considered high or low
  • Location of installation of the water heater is very important. People living near the coast have to take corrosion into account. Saline water can also corrode internal parts of the water heaters.

Comparison at a Glance: Of Electric Storage-Type Water Heaters (15 & 25 litres capacity)

For our survey, we shortlisted 25 regular-selling brands of electric storage-type water heaters (vertical) of 25 litres capacity. We conducted the survey during October 2020.

Sl No.

Brand

Model No.

Rated Capacity (litres)

Outer body material

Inner tank Material

Rated Power (watt)

#Stand- ing Loss (kWh)

Star Rat- ing

Price (Rs)

Warrantee (Compre- hensive/ Tank,) Years

1

Morphy Richards

SALVO

25

ABS

Glass Lined

2,000

0.562

5

9216

2

2

Havells

Monza EC 25

25

 

cold rolled steel

2

0.560

5

8945

2+5

3

AO Smith

SDS 025

25

ABS

lue Diamond Glass Lined

2

0.550

5

10,027

2+7

4

AO Smith

HSE-VAS- 025

25

Metal

Diamond Glass Lined

2,000

0.540

5

6799

2+7

5

AO Smith

HSE-SAS- 025

25

 

Diamond Glass Lined

2,000

0.620

5

9500

3+7

6

Bajaj

New Shakti

25

CRCA+ PP

Mild Steel with Glass lined Coating

2000

0.562

4

6821

2+5

7

Bajaj

Cadlia

25

ABS + PP

Mild steel with glass lined coating

2000

0.511

4

7349

2

8

V-Guard

Steamer

25

Mild steel

Stainless Steel

2,000

 

4

8900

1

9

Racold

Buono Pro

25

metal

titanium enamel coat- ing

2000

 

 

7049

2+3

10

V-Guard

Sprinhot Plus

25

25

ABS

stainless steel

2,000

0.562

5

8016

2+5

11

V-Guard

Krystal Plus 25

25

ABS

Engineered Polymer Anti Corrosion

2,000

0.562

5

8709

2+5

12

Venus

Mega Plus 25 EV

25

Metal

Porecelain enamel glasslined

2000

0.562

4

6985

2+5

13

Usha

Aquagenie

25

Metal

Blue sapphire enamel coat- ing

2000

0.511

5

8400

2+5

14

Inalsa

PSG 25N

25

ABS

stainless steel

2,000

0.618

4

6032

2+5

15

Remson

Prime Aqua Prime CSS

25

 

SS 304

2000

0.511

5

5030

2+5

16

Crompton

Arno Neo ASWH 2625

25

 

Polymer coating

2000

0.562

4

5800

2+5

17

Racold

ANDRIS

Lux plus

25

ABS PLASTIC

Glass lined

2,000

 

4

8970

2+5

18

Havells

Puro Plus 25

25

Feroglas dry powder coating

cold rolled steel

2,000

0.560

4

11100

2+5

19

Havells

Monza Slim

25

Feroglas

 

2,000

0.618

3

9399

2+5

20

Kenstar

5WH- KEN25

25

 

 

2000

0.511

5

6199

2+7

21

Polar

Aqua hot 25

25

stainless steel

304 grade SS

2000

0.562

4

4899

2+5

22

MARC

Neo clas- sic 25

25

Metal

 

2000

0.511

5

5595

1

23

UNITED

UNIHOT 25

25

ABS

Stainless steel

2000

0.511

5

4765

 

24

Bajaj

Calenta

15

ABS + PP

Mild steel with glass lined coating

2000

0.511

5

8213

2

25

USHA

Verve Digital

15

ABS

blue sap- phire enamel coating

2000

 

5

8549

2+3

26

Crompton

Amica ASWH

15

metal

polymer coated tank

2000

 

5

5590

2+7

27

Havells

Monza Ec

15

cold rolled steel

stainless steel

2000

0.419

5

7200

2+5

28

SPHERE- HOT

TURBO 15

15

 

stainless steel

2000

0.512

2

4290

2

29

THER- MOKING

TKG 15

15

stainless steel

 

2000

0.419

5

5999

2

30

V Guard

Kristal Plus 15

15

ABS

304 grade stainless steel

2000

0.461

4

7140

2+5

# Standing loss (kWh/24 hour/45⁰ C)” means the energy consumption of a filled water heater, after steady state conditions have been reached when connected to electrical supply, and when no water is drawn for twenty-four hours and the standing loss shall be calculated as per IS 2082. Note: Price may vary from retailer to retailer. Before buying please check price on the amazon.in or flitkart.com website and compare the models.

Electric & Gas Water Heater: Difference

Factors

Electric Water Heater

Gas Water Heater

Ease of use

Single touch and automatic operation.

The water level and heating rate should be manually regulated.

Time taken to

heat water

Takes relatively more time than Gas models, but stored models can deliver instantly.

Heats water quickly

Space occupied

Requires less space due to the wall mounting build.

Occupies more space and also an additional space to place LPG cylinder with proper ventilation.

Environment impact/ Pollution

No pollution as water is heated through electricity.

High pollution, due to the emission of gas . Carbon monoxide can also be released.

Safety

The safest option and is mostly recommended for domestic purposes

A bit risky and should never be used in houses.

Ease of Installa-

tion

Easy to install.

Connection for LPG and arrangement of outlet for ventilation and fumes needs experience.

Price

A bit expensive, compara- tively. The price varies from instant geyser to storage geysers.

Cheaper than electric type

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