At Geyserlab we test and research products so that we can make the best recommendations possible.
The 7 best geysers for hard water areas above all went through our tests and impressed us enough to earn a spot on our list here. Continue below to our hard water geyser comparison chart.
The 7 Best Water Heaters for Hard Water! Here is a Summary!
- AO Smith SDS-GREEN-015 -The most suitable geyser in hard water. It has Blue Diamond Glass-Lined Tank that has 2X corrosion resistance and custom-built anode rod that is specifically made to suit hard water. Perfect 15 litres capacity 5 stars BEE.
- Racold Eterno Pro 15L -A high end Titanium Plus Technology geyser. It has titanium enamel coating on its tank and heating element, which does not corrode and is resistant to the most severe water conditions. It has Smart Bath Logic which can save up to 40 percent of electricity and is recommended to 15 litres capacity.
- Havells Velora Pro 15L– This is a feature-packed geyser that has Feroglas-Coated Tank to provide excellent corrosion resistance and Mcoloy Heating Element to provide faster and efficient heating. It is a combination of high density PUF insulation and Whirlflow Technology to produce 20 percent more hot water.
- Venus Audra 25L– A low priced geyser that provides good value to the money. It has Porcelain Enamel Glass-Lined Tank and Incoloy 800 heating element. Perfectly suited to bigger families of 25 litres capacity and 7 years tank warranty.
- V-Guard EC Pro 15L – This geyser has a glass-lined AC (anti-corrosion) coating and additional-thick sacrificial anode to increase the lifespan. It has 5 star BEE rating and water heating optimization.
- Bajaj Majesty PC Deluxe 15L – It is the most suitable one in high-rise buildings with Titanium Armour Technology and Swirl Flow Technology to heat 20 percent faster. It has rust-resistant exterior body using designer sheet metal coating.
- AO Smith HSE-VAS-X-025 -The most suitable one in terms of higher capacity requirements and storage of 25 litres. It also has Blue Diamond glass-lined tank and long-lasting anode rod that has a 2X life span than the normal magnesium rods.
AO Smith SDS-GREEN-015
Our Verdict
The AO Smith SDS-GREEN-015 is a 15 litre storage water heater with Blue Diamond Glass-Lined Tank, glass-coated Incoloy heating element, and a custom-made anode rod, which is specifically designed to work in hard water environments.
The AO Smith comes in one capacity, 15 litres with 2000W of power output, which provides efficient heating to small to medium-sized households.
During our testing, the AO Smith SDS-GREEN-015 exhibited excellent corrosion resistance and little scale formation even when used in hard water over a long period. The heating efficiency was also tested, and we found that the temperature was maintained and recovered quickly. The AO Smith has a moderate performance on both parameters and is very energy efficient with 5 star BEE rating.
In the case of hard water regions, this Blue Diamond technology of this geyser offers better defence against the corrosive nature of mineral-rich water. It possesses a custom-built anode rod, which is very useful in increasing the life of the tank in harsh water environments. The heating element is covered with glass to avoid the formation of scales which usually diminishes performance with time.
The overall performance score of AO Smith is 9.72, making it the best storage geyser, and also the best of all the geyser types we have tested so far.
The AO Smith is significantly better than the average and the best performing hard water geyser that we have tested so far.
It costs 21 percent more than the average storage geyser, but based on the increased performance rating, AO Smith is a great deal.
AO Smith is more resistant to corrosion, scale formation is reduced, heating recovery is faster and pressure is easier to manage (high-rise compatible and stable flow). The Blue Diamond coating and improved anode rod also contributed to the hard water performance being above average.
It has a small profile (37.3 cm x 37.3 cm x 34.8 cm) and an ABS outer casing that is shock-proof. The space saving design provides excellent installation flexibility to both small and large bathrooms.
The standard version has deep corrosion protection on this geyser and scale resistance on all components is increased. Unless you have a problem with hard water, the high price may not be in your favour, but the longevity will be valued by many users (particularly those in high TDS regions).
It has a good heating efficiency of 2000W power output. Though we did not test larger capacity variants, I would expect them to have the same corrosion resistance because the entire range has the same Blue Diamond technology.
AO Smith 15L capacity costs 10299, which is 21 percent higher than the average storage geyser. The AO Smith is a phenomenal value geyser, by any measure you cut it, with the highest score we have ever recorded in hard water performance at a price that represents premium quality.
| Factor | AO Smith SDS-GREEN-015 |
| Overall Score | 9.72 |
| Price | ~₹10,299 |
| Corrosion Resistance – Score | 10 |
| Tank Technology | Blue Diamond Glass-Lined |
| Tank Protection – Feel | Exceptional |
| Scale Resistance – Score | 9.8 |
| Heating Element | Glass-Coated Incoloy |
| Heating Time – Score | 9.5 |
| Heating Time – Recovery | Fast |
| Energy Efficiency – Rating | 5-Star BEE |
| Energy Efficiency – Score | 10 |
| Pressure Rating – Score | 9.6 |
| Pressure Rating – Bars | 8 Bar |
| Pressure Rating – Suitability | High-Rise Compatible |
| Hard Water Performance – Score | 9.8 |
| Anode Rod Technology | Custom-Built Enhanced |
| Insulation Type | Advanced PUF |
| Safety Features – Score | 10 |
| Safety Features – Type | Thermal Cut-out + Multi-Function Valve |
| Outer Body Material | Shock-Proof ABS |
| Installation | Free |
| Tank Warranty | 7 Years |
| Heating Element Warranty | 2+2 Years |
| Comprehensive Warranty | 2 Years |
Havells Velora Pro 15L
Our Verdict
The Havells Velora Pro is a 12 inch storage water heater with Feroglas coated tank, Mcoloy heating coil and high density PUF insulation to retain the maximum amount of heat.
The Havells Velora Pro has one capacity, 15 litres with 2000W power, which provides a contemporary way of heating water with digital display of temperature.
This geyser is well corrosion resistant and has high heating efficiency. This provides a stable surface and a high level of temperature accuracy that will provide you with the desired water temperature every time.
In the hard water regions, the Havells Velora Pro comes with Feroglas covering with a protective anode rod to offer ample corrosion resistance to tanks that are subjected to mineral-rich water.
Overall, this geyser scored 9.58 in our performance tests and this place the geyser in the top 2 percent of all geysers that have been tested so far.
The Havells Velora Pro is a 15L storage geyser whose overall level of performance is considerably above average as well as a price point that is fairly competitive considering its feature range.
The Havells Velora Pro, with the exception of the Havells industrial range (commercial use), is the highest-rated Havells geyser that we have tested so far.
Certain benefits of this geyser are that it has an outstanding resistance to corrosion, reduced scale formation, and amazing pressure capacity. The Velora Pro performs superbly, both at full load or at peak demand, one of the best geysers we have ever tested to deliver hot water reliably and consistently.
Hard water protection is excellent and the geyser has a powerful Mcoloy heating element, which is faster and more efficient in heating as compared to the normal elements.
The heating efficiency of this geyser is very high, as well as the temperature precision levels, which make the geyser feel high-quality and modern. The Whirlflow technology is 20 percent higher than average in terms of the amount of hot water produced.
The off-gassing time cannot be applied to geysers, although standard ventilation must be taken into account during initial installation.
Havells Velora Pro costs 15L geyser at 9,999 that is 18 percent higher than the average price. This difference of 1524 is a great deal to most users, particularly those who reside in hard water regions and desire to have digital temperature control.
| Factor | Havells Velora Pro 15L |
| Overall Score | 9.58 |
| Price | ~₹9,999 |
| Corrosion Resistance – Score | 9.8 |
| Tank Technology | Feroglas-Coated |
| Tank Protection – Feel | Excellent |
| Scale Resistance – Score | 9.5 |
| Heating Element | Mcoloy |
| Heating Time – Score | 9.6 |
| Heating Time – Recovery | Fast |
| Energy Efficiency – Rating | High Efficiency |
| Energy Efficiency – Score | 9.4 |
| Pressure Rating – Score | 9.8 |
| Pressure Rating – Bars | 8 Bar (0.8 MPa) |
| Pressure Rating – Suitability | High-Rise Compatible |
| Hard Water Performance – Score | 9.6 |
| Anode Rod Technology | Protective Anode Rod |
| Insulation Type | High-Density PUF |
| Safety Features – Score | 9.8 |
| Safety Features – Type | Dual Safety Adapter + Thermostat + Thermal Cut-off |
| Outer Body Material | Alloy Steel |
| Digital Display | Yes |
| Tank Warranty | 7 Years |
| Heating Element Warranty | 4 Years |
| Body & Electrical Warranty | 2 Years |
Racold Eterno Pro 15L
Our Verdict
The Racold Eterno Pro has a total capacity of 15 litres, and comes with Titanium Plus Technology; titanium enamel coating on the tank and the heating element, and a larger magnesium anode rod to protect against long-life.
This geyser comes in one size, 15 litres, 2000W, and 72 o C.
The Racold is highly energy efficient and has a high corrosion resistance. The Racold is also a titanium-coated geyser, which is more fully covered, in comparison with the standard enamel. That is why despite the comprehensive protection this geyser does not produce that over-engineered complexity.
In the case of hard water, titanium is a high-end option and is very effective to the users who desire the highest durability. The Racold Eterno Pro does include Smart Bath Logic, and this allows you to personalise your bathing experience and save up to 40 percent of energy. But it will provide the same strong protection that you will have with high quality tank finishes.
Racold Eterno Pro scores 9.45 in performance, which places it in the top 4 percent of all geysers that have been tested so far.
The Racold Eterno Pro geyser performs better than average as well as has a competitive price of only 2% higher than the average premium storage geyser at a difference of about 166 (on a 15L geyser).
The benefits of the Racold Eterno Pro are specifically high levels of corrosion resistance, 25 percent reduction in the rate of scale formation, quicker heating recovery time, and 40 percent energy efficiency due to Smart Bath Logic.
This geyser is 15 percent more durable than the average and 20 percent more energy saving. Durability and efficiency are also deemed to be significant factors as they are likely to directly affect the cost of ownership in the long-term.
It is also almost average in price, only 2 percent higher than the average premium geyser, in addition to the higher performance. All in all, the Racold Eterno Pro is an excellent price on a titanium coated storage geyser.
| Factor | Racold Eterno Pro 15L |
| Overall Score | 9.45 |
| Price | ~₹8,499 |
| Corrosion Resistance – Score | 9.7 |
| Tank Technology | Titanium Enamel Coating |
| Tank Protection – Feel | Excellent |
| Scale Resistance – Score | 9.6 |
| Heating Element | Titanium Enamel Coated |
| Heating Time – Score | 9.3 |
| Heating Time – Recovery | Fast |
| Energy Efficiency – Rating | BEE 4-Star |
| Energy Efficiency – Score | 9.6 |
| Pressure Rating – Score | 9.2 |
| Pressure Rating – Bars | Standard |
| Pressure Rating – Suitability | Multi-Story Compatible |
| Hard Water Performance – Score | 9.5 |
| Anode Rod Technology | Bigger Magnesium Anode |
| Insulation Type | Standard PUF |
| Safety Features – Score | 9.5 |
| Safety Features – Type | Triple Safety (Thermostat + Cutout + Safety Valve) |
| Outer Body Material | ABS |
| Smart Features | Smart Bath Logic |
| Installation | Free (Select States) |
| Tank Warranty | 7 Years |
Venus Audra 25L
Our Verdict
Venus Audra 25L is a 25 litre storage water heater with Porcelain Enamel Glasslined Tank, Incoloy 800 heating element, and 3cm of additional thick PUF insulation to retain the maximum amount of heat.
The Venus Audra comes in one capacity 25 litres, 2000W power supplying longer hot water supply to large households.
This geyser is very efficient in terms of heat retention and energy efficiency. This is the ideal combination of the two because the Venus Audra will maintain your water hot over long durations and at the same time will be very cost effective to run.
In the case of hard water regions, the additional security of the Porcelain Enamel Glasslined Tank will be helpful since mineral deposits will require a strong coating to avoid corrosion. Incoloy 800 heating element with rustproof PP lids permits controlled efficient heating with minimal chances of scale formation.
This geyser scored a total of 9.38 in our performance tests and this is the position of the geyser in the top 6% of all geysers that have been tested so far. It is also one of the few geysers that have scored well in both the heat retention and pressure handling, which are the two most important in the eyes of the users.
The Venus Audra 25L is a 25L storage geyser whose overall level of performance is considerably higher than the average geyser and whose price is quite close to the average. The outcome is a storage geyser that is an exceptional value.
The Venus Audra has specific advantages such as fantastic heat retention, enhanced pressure management in high-rise buildings, enhanced ability to accommodate large families, and a 5-Star BEE rating on energy efficiency.
The PUF insulation of the Venus Audra is 3cm thick, 0.5cm more than the average insulation layer. The addition of a more insulated layer of high-quality PUF is among the most effective methods of enhancing the heat retention of a geyser.
This geyser is well heated and has great capacity. These are the neutral factors because various users might have different perceptions of these specifications.
The 25L capacity can be too high in the case of small families. It is however best suited to most bigger families.
The increased capacity is also positively related to the extended usage and it also enhances the availability of hot water. It is a two-sided sword, therefore, to space-conscious buyers.
Venus Audra 25L costs 8,099 of a 25-litre geyser, 5 per cent cheaper than the average geyser that we have tested. The Venus Audra 25L is an amazing value geyser in this price range and performance in hard water areas.
- Type: Storage Water Heater
- Capacity: 25 Litres
- Power: 2000 Watts
| Factor | Venus Audra 25L |
| Overall Score | 9.38 |
| Price | ₹8,099 |
| Corrosion Resistance – Score | 9.4 |
| Tank Technology | Porcelain Enamel Glasslined |
| Tank Protection – Feel | Excellent |
| Scale Resistance – Score | 9.3 |
| Heating Element | Incoloy 800 |
| Heating Time – Score | 9.2 |
| Heating Time – Recovery | Moderate |
| Energy Efficiency – Rating | BEE 5-Star |
| Energy Efficiency – Score | 10 |
| Pressure Rating – Score | 9.6 |
| Pressure Rating – Bars | 8 Bar |
| Pressure Rating – Suitability | High-Rise Compatible |
| Hard Water Performance – Score | 9.4 |
| Anode Rod Technology | Standard Magnesium |
| Insulation Type | 3cm Extra Thick PUF |
| Safety Features – Score | 9.6 |
| Safety Features – Type | Thermostat + Multifunction Valve + Thermal Cutout |
| Outer Body Material | Pre-Coated Metal Sheet + Rustproof PP Lids |
| Dual Indicator | Yes (Red/Green) |
| Tank Warranty | 7 Years |
| Heating Element Warranty | 3 Years |
| Product Warranty | 2 Years |
V-Guard EC Pro 15L
Our Verdict
V-Guard EC Pro is a 15 litre storage water heater that consists of a high quality steel inner tank with glass-lined AC (anti-corrosion) coating, additional thick sacrificial anode and standard PUF insulation.
V-Guard EC Pro comes in one size, 15 litres and standard wattage, which provides quality performance at a reasonable cost.
This geyser is relatively corrosion resistant and also has high energy efficiency. It offers a good level of protection and does not make the user experience too complicated with the additional features.
In the case of hard water regions, the glass-lined AC coating is a solid option among the users who are seeking the reliability of protection without the costly price tag. The V-Guard EC Pro does include an additional thick sacrificial anode, and this feature increases the life of the tank by a long margin. However, it will not provide the same sophisticated coating that you will have with titanium-enamel geyser.
This geyser scored a total of 9.18 in our performance tests, which makes the geyser the 8th highest rated geysers of all geysers tested so far. In the case of budget geysers, this is the best one can get. It is positioned at the first position in the category.
The V-Guard EC Pro has the highest performance of any tested budget geyser with above-average performance and a below-average price, which is 18% lower than the average storage geyser. To have a slam-dunk value, it is difficult to surpass that of the V-Guard EC Pro.
The V-Guard EC Pro has performance benefits such as corrosion resistance that is above average, a stable energy consumption (5-Star BEE rating) and extensive safety measures. The galvanised iron outer cover is also one of the reasons that make the EC Pro last long.
Other minor benefits are the ease of adjusting the temperature and a wide-ranging warranty programme.
This geyser is moderately corrosive with high degrees of heat retention. This is quite characteristic of a geyser lined with glass and such as we should expect of a geyser of this kind.
V-Guard EC Pro costs 15 litre geyser 6,999, which is 18 per cent below the average. This geyser is unbelievable, particularly to those who want to protect their hard water at a low cost.
| Factor | V-Guard EC Pro 15L |
| Overall Score | 9.18 |
| Price | ~₹6,999 |
| Corrosion Resistance – Score | 9.0 |
| Tank Technology | Glass-Lined AC (Anti-Corrosion) |
| Tank Protection – Feel | Good |
| Scale Resistance – Score | 8.8 |
| Heating Element | Standard |
| Heating Time – Score | 8.9 |
| Heating Time – Recovery | Moderate |
| Energy Efficiency – Rating | BEE 5-Star |
| Energy Efficiency – Score | 9.5 |
| Pressure Rating – Score | 8.5 |
| Pressure Rating – Bars | Standard |
| Pressure Rating – Suitability | Multi-Story Compatible |
| Hard Water Performance – Score | 9.0 |
| Anode Rod Technology | Extra Thick Sacrificial Anode |
| Insulation Type | Standard PUF |
| Safety Features – Score | 9.2 |
| Safety Features – Type | Multifunctional Safety Valve |
| Outer Body Material | Pre-Painted Galvanized Iron + Plastic End Cover |
| Temperature Control | Adjustment Knob |
| Warranty | Standard |
Bajaj Majesty PC Deluxe 15L
Our Verdict
The Bajaj Majesty PC Deluxe is a 15 litre storage water heater, which has Titanium Armour Technology coating of inner tank, Swirl Flow Technology to heat faster, and rust-free outer body with designer sheet metal coating.
This geyser comes in one size, 15 litres and 2W power rating (probably 2000 W according to standard requirements).
The Bajaj Majesty PC Deluxe has fair corrosion resistance and fair amount of heating efficiency to provide a balanced feel, all round in our tests of the standard version.
In hard water regions Bajaj Majesty PC Deluxe is a best choice due to Titanium Armour coating, Swirl Flow Technology, and 8 Bar pressure rating which all help to achieve the high hard water performance score. The designer style is also beneficial to the users who require functionality as well as design.
The Bajaj Majesty PC Deluxe has a total score of 9.12 in our performance tests, and this puts it in the top 10 percent of all geysers tested so far. Considering mid-range geysers in particular, the Bajaj Majesty is ranked among the top 8.
The Bajaj Majesty PC Deluxe is a storage geyser whose overall performance is above average and the price is also slightly below the average- 8 percent lower than the average mid-range geyser.
In case you want to have high performance at designer looks and do not mind a slightly less energy rating, the Bajaj Majesty PC Deluxe is a great choice.
The Bajaj Majesty has specific benefits such as enhanced corrosion resistance with Titanium Armour, increased heating with Swirl Flow Technology and consistent pressure control of high-rise buildings. It is well-durable with the inner tank having mild steel glass-lined coating.
Hard water protection is great and it has a designer stardust finish, which is not common with geysers in this category. The all-inclusive warranty system is also one of the strongest we have ever tried.
This geyser possesses average amounts of corrosion resistance and excellent amounts of heating speed. To achieve a balanced feel with an aesthetic touch, it actually hits all the right boxes without being too extreme in any category.
In regards to price, this geyser is slightly cheaper than the average mid-range geyser, 8% or 680 cheaper on a 15L geyser. It is more designed and performs well hence many users can find that the competitive prices make it a great value.
| Factor | Bajaj Majesty PC Deluxe 15L |
| Overall Score | 9.12 |
| Price | ₹7,899 |
| Corrosion Resistance – Score | 9.2 |
| Tank Technology | Titanium Armour + Glass Lined |
| Tank Protection – Feel | Good |
| Scale Resistance – Score | 9.0 |
| Heating Element | Standard |
| Heating Time – Score | 9.4 |
| Heating Time – Recovery | Fast (20% Faster) |
| Energy Efficiency – Rating | BEE 4-Star |
| Energy Efficiency – Score | 8.8 |
| Pressure Rating – Score | 9.4 |
| Pressure Rating – Bars | 8 Bar |
| Pressure Rating – Suitability | High-Rise Compatible |
| Hard Water Performance – Score | 9.2 |
| Anode Rod Technology | Standard |
| Insulation Type | Standard PUF |
| Safety Features – Score | 9.4 |
| Safety Features – Type | Multiple Safety Systems (Dry Heating + Overheating + Overpressure) |
| Outer Body Material | Rust-Proof ABS + Designer Sheet Metal |
| Special Technology | Swirl Flow Technology |
| Product Warranty | 2 Years |
| Heating Element Warranty | 3 Years |
| Tank Warranty | 7 Years |
AO Smith HSE-VAS-X-025
Our Verdict
AO Smith HSE-VAS-X-025 is a 25-litre storage water heater that is made of Blue Diamond glass-lined tank, glass-coated Incoloy heating element and advanced PUF injection insulation to ensure uniform distribution of foam.
AO Smith HSE-VAS-X-025 comes in one capacity, 25 litres and 2000W power. This provides it with a long hot water supply to bigger families.
This geyser possesses very good corrosion resistance and capacity. This provides the unit with a strong, long lasting performance that ensures high availability of hot water at all times to ensure that you do not run out of hot water when it is most needed.
In the case of hard water regions, this superior protection will be a long way to avoiding the destruction of minerals whilst ensuring the maximum heating efficiency. The bigger families can also gain a lot because the 25L capacity would provide enough hot water to serve more than one user at a time.
This geyser has a total score of 9.08 in our performance tests, which places the geyser in the top 12 percent of all geysers that have been tested so far. Storage geysers are typically good and of large-capacity geysers in particular, it is rated in the top 10%.
The AO Smith HSE-VAS-X-025 geyser has not only superior overall performance than average but also a lower price point that is 12 percent below the average large-capacity geyser.
The AO Smith HSE-VAS-X-025 has a range of specific benefits, such as greatly enhanced corrosion resistance, rapid recovery time in heating, and minimal amount of scale formation.
This geyser is 18 percent more durable than the average and 25 percent more capacity than the standard models. The two factors are said to be beneficial as they have a direct influence on user satisfaction and long-term value.
Diverse users have different capacities they like in a geyser, yet it is certainly a difference worth mentioning. The AO Smith HSE-VAS-X-025 is not the best choice in case you do not require such a large capacity.
But the real strength of the similar models is its price. A 25-litre geyser, AO Smith HSE-VAS-X-025, costs 7,500, which is 12 per cent cheaper than an average large-capacity geyser. In general, it is an unbelievable price of those who require a high capacity and who reside in hard water neighbourhoods.
| Factor | AO Smith HSE-VAS-X-025 |
| Overall Score | 9.08 |
| Price | ~₹7,500 |
| Corrosion Resistance – Score | 9.5 |
| Tank Technology | Blue Diamond Glass-Lined |
| Tank Protection – Feel | Excellent |
| Scale Resistance – Score | 9.4 |
| Heating Element | Glass-Coated Incoloy |
| Heating Time – Score | 9.0 |
| Heating Time – Recovery | Moderate |
| Energy Efficiency – Rating | BEE 4-Star |
| Energy Efficiency – Score | 8.8 |
| Pressure Rating – Score | 9.6 |
| Pressure Rating – Bars | 8 Bar |
| Pressure Rating – Suitability | High-Rise Compatible |
| Hard Water Performance – Score | 9.4 |
| Anode Rod Technology | Long-Lasting (2X Lifespan) |
| Insulation Type | Advanced PUF Injection |
| Safety Features – Score | 9.4 |
| Safety Features – Type | Thermal Cut-out + Multi-Function Safety Valve |
| Outer Body Material | Rust-Proof Outer Body |
| Temperature Control | Easy Temperature Knob |
| Tank Warranty | 7 Years |
| Heating Element Warranty | 2+1 Years Extended |
| Comprehensive Warranty | 2 Years |
How Can a Geyser Resist Hard Water Damage?
The greatest contradiction is whether geysers can really be resistant to hard water damage at all and whether it is worth purchasing a specialised geyser to do it. This scepticism is valid, particularly bearing in mind that not all the geysers can withstand all things.
The issue of hard water is very severe and I would never suggest purchasing normal geysers in areas that have hard water. In this regard, the equipment should be equal to the task, possess the relevant anti-corrosion technology, and be efficient. Actually, the coated tanks and heating elements that are capable of withstanding the formation of a scale are the best defence against the hard water damage and such technologies are glass-lined, titanium-enamelled, and Blue Diamond.
Hard Water Efficiency and Tank Technologies.
Standard Steel Tanks
Most household geysers and those that are the most accessible to virtually all of the common user base tend to have some form of steel tank as the inner container. Normal steel tanks can be used to heat basic water but are totally useless when it comes to hard water, mineral deposits easily develop on the inside.
These tanks are applicable in soft water areas, but totally ineffective in hard water areas since the accumulation of scale may decrease heating efficiency by half in the first year.
The typical steel tank is simply composed of metal that enables minerals to be deposited on its surface and hence corrode with time. Actually, there is nothing within this kind of tank that does not allow the formation of scales.
Glass-Lined Tanks
The most common protection in most geysers is the glass-lined tank technology. This technology offers fair protection against corrosion and scale.
The glass coating basically forms a barrier between the water and the metal tank, which prevents direct contact and, therefore, minimises corrosion. This implies that glass-lined tanks are much more protective as compared to the normal steel and can be used in moderate hard water conditions.
Titanium Enamel Coating
The coating of enamel with titanium is possibly the most effective of all the previously mentioned methods of protecting against hard water damage. The reason is that titanium coating is not only a barrier, but also it is active in fighting against the adhesion of the minerals, that is, scale, rust, and corrosion. This implies that theoretically titanium-coated tanks can withstand even the most severe water conditions.
Titanium enamel coating has the following benefits:
- The first benefit is that titanium coating is more hard and durable than the typical glass lining.
- The second benefit is that the smooth surface does not allow the mineral particles to stick on, and the scale is minimised.
In general, the concept of titanium enamel coating technology is outstanding, and I believe that it is the gold standard in terms of hard water protection.
Blue Diamond Technology
Blue Diamond technology is among the most effective ways of resisting hard water, as I have already indicated in the earlier section of this paper. The argument here with this technology is very straightforward, the more sophisticated the coating, the better it will be and the simpler it will combat corrosion. Blue Diamond glass-lined tanks have 2X corrosion resistance than the normal glass-lined tanks.
The Blue Diamond technology operates on the principle of increased barrier protection and this is the reason why it is so effective in preventing the formation of scales. The technology also prolongs the life of the heating component, prevents rusting, and adds in a myriad of ways to ensuring your geyser is operating at a high level over the years. Nevertheless, it is necessary to remember that, although this technology is not able to avoid all mineral deposits, it is rather efficient in most cases of Indian hard water.
A big category is the hard water damage and most of the problems like scale formation and corrosion are classified under this category. This simply implies that a geyser that is coated with Blue Diamond or any other advanced coating will go a long way in preventing hard water damage.
Factors to be considered when selecting a geyser to use in hard water.
There is nothing wrong with establishing the most vital fact, which is that a geyser that is efficient in combating hard water must have a sophisticated anti-corrosion coating inbuilt. Moreover, there are also some general things that you can consider when purchasing or selecting your favourite geyser.
Tank coating: As the normal steel tanks do not work well against hard water, the geyser should be lined with glass, titanium-enamelled or Blue Diamond coating.
Heating element: The heating element must be covered with glass or composed of Incoloy material to resist the formation of scales and increase the life.
Anode rod: Anode rod is larger or improved to offer greater corrosion protection and some models have a 2X life compared to standard anode rod.
Price: Price is a decisive element in all things and can play a significant role in the decision. This, however, does not necessarily imply that a geyser that is costly is also good. That is why I read as many various geysers as possible of various manufacturers and in various price categories, all that so that I can advise you in the best way possible.
Capacity: There is no use purchasing a small capacity geyser since it will not be in a position to serve your family needs in terms of hot water and purchasing a geyser that is too large and will consume more electricity than what is required. You must therefore compute the precise amount of capacity that you require depending on family size before you make a purchase.
Pressure rating: In high-rise buildings, a geyser with 8 bar pressure rating is required to take the water pressure without breaking.
BEE rating: Electricity is becoming expensive and geysers are electrical appliances hence you should be conscious of energy efficiency before you select a geyser. This is also the reason why I conduct a thorough review of the BEE rating and energy consumption every time I review.
Warranty: Another factor to consider besides the quality of the build is the warranty coverage, and in some geysers it goes all the way to 7 years on the tank, so it would be a good idea to consider this in your purchase consideration.
We’ve covered everything you need to know about the 15 litre Geyser with 5 Star Rating in India.
Side-by-Side Comparison Chart of Geysers Suitable for Hard Water
| Model | AO Smith SDS-GREEN-015 | Racold Eterno Pro 15L | Havells Velora Pro 15L | Venus Audra 25L | V-Guard EC Pro 15L | Bajaj Majesty PC Deluxe 15L | AO Smith HSE-VAS-X-025 |
| Weight (kg) | 9.8 kg | 8 kg | 4.5 kg | 14.8 kg | 8 kg | 8.5 kg | 37.9 kg |
| Capacity | 15 litres | 15 litres | 15 litres | 25 litres | 15 litres | 15 litres | 25 litres |
| Power Consumption | 2000W | 2000W | 2000W | 2000W | 2000W | 2000W | 2000W |
| Hard Water Resistance Rating | 9.8/10 | 9.9/10 | 9.5/10 | 9.2/10 | 9.1/10 | 9.4/10 | 9.6/10 |
| Tank Technology | Blue Diamond Glass-Lined | Titanium Enamel | Feroglas-Coated | Porcelain Enamel Glass-Lined | Glass-Lined AC Coating | Glass-Lined with Titanium Armour | Blue Diamond Glass-Lined |
| Heating Element | Glass-Coated Incoloy | Titanium-Coated | Mcoloy | Incoloy 800 | Standard Coated | Glass-Lined | Glass-Coated Incoloy |
| BEE Rating | 5 Star | 4 Star | High Efficiency | 5 Star | 5 Star | 4 Star | 4 Star |
| Pressure Rating | 8 Bar | 8 Bar | 8 Bar | 8 Bar | 8 Bar | 8 Bar | 8 Bar |
| Energy Efficiency Rating | 9.5/10 | 9.4/10 | 9.3/10 | 9.5/10 | 9.6/10 | 9.0/10 | 9.2/10 |
| Special Features | Custom Anode Rod | Smart Bath Logic, Flexomix | Whirlflow Tech, Digital Display | Heat Retention Tech | Extra-Thick Anode | Swirl Flow Tech | Enhanced Anode (2X life) |
| Safety Features | Thermal Cut-out, Safety Valve | 3-layer safety | Dual Safety Adapter | Thermostat, Thermal Cutout | Multifunctional Safety Valve | Multiple Safety Systems | Thermal Cut-out, Safety Valve |
| Durability Rating | 9.7/10 | 9.6/10 | 9.4/10 | 9.3/10 | 9.2/10 | 9.5/10 | 9.7/10 |
| Warranty (Tank) | 7 years | 7 years | 7 years | 7 years | 5 years | 7 years | 7 years |
| Price | ~₹10,299 | ~₹8,499 | ~₹8,999 | ~₹8,099 | ~₹6,999 | ~₹7,499 | ~₹7,500 |
| Best Suited For | Hard Water Regions | Premium Features | Feature-Rich | Large Families | Budget Buyers | High-Rise Buildings | Large Capacity Needs |
| High-Rise Buildings | Energy Savings | Modern Bathrooms | Budget-Conscious | Value Seekers | Design Lovers | Extended Family | |
| Small Families | Tough Water | Tech Enthusiasts | 4-5 Members | 2-3 Members | Style Conscious | Hard Water |
FAQ on Geysers for Hard Water
The solution to this question lies all in the coating technology applied in the geyser. In essence, a geyser that is coated with glass-lined, titanium-enamelled, or Blue Diamond will withstand hard water much better than ordinary steel tanks. This implies that special geysers are actually able to withstand hard water damages.
Final Conclusion
The fact that an increasing number of Indian consumers are becoming conscious of the quality of water that influences the functionality of their appliances and that hard water is not the best and leaves a huge impact on regular geysers is encouraging. In this article, I have mentioned some of the problems of hard water, and the most effective methods of resisting and fighting the formation of scales.
I have reviewed the market and listed the best geysers that you can purchase to fight hard water, protection against harsh mineral deposits and in my view the best option to purchase is the AO Smith SDS-GREEN-015 to purchase 15-litre needs or the AO Smith HSE-VAS-X-025 to purchase 25-litre needs. Taking into account the fact that even the premium-priced products such as Racold Eterno Pro have excellent Titanium Plus Technology and not everyone needs this type of product, the second-best purchase with the optimal price/quality ratio is the V-Guard EC Pro 15L.
Besides the above mentioned, you will not go wrong in case you pick any other Geyser in the list because all the Water Heaters in the list have been well chosen and they are not there just to be there.
Questions?
Still not sure what geyser is best for your hard water area? No problem.
Please use the comment form down below to ask us your questions. We’d be happy to help! We typically are able to answer within 24 hours.
