The 3kW heating element is standard for instant geysers in India, but you should check the type and material of the heating element. Incoloy or copper heating elements are known for their durability and efficiency. Otherwise glass coated heating elements are the best. Only AO Smith provide glass coated heating element in Instant geysers in India.

Instant geyser must have safety features like a thermostat to prevent overheating and a pressure relief valve to release excess pressure. As the 3kw is considered high power which put a lot of load on wiring of the house specially old houses with decade old wiring. An ELCB inbuilt instant geyser are also need of the hour to avoid electric shock. Better to connect elcb plug/top separately to geyser.

Bajaj Shield Series Skive Plus 5L 3KW Instant Water Heater For Home|Star Rated Geyser For Bathroom & Kitchen|Rust Proof|Stainless Steel Tank|4-Yr Product 6-Yr Element 5-Yr Tank Warranty|White
  • Tank Durability: DuraAce tank with marine-grade glassline coating ensures longevity and corrosion resistance. Heating Element Efficiency: DuraCoat non-stick heating element for efficient performance and easy maintenance.
  • Temperature Control: DuraNte thermostat offers precise temperature adjustment for comfort. Surge Protection: VoltagePro technology withstands 4.5KW surge voltage for safety.
  • Robust Construction: Unique weld-free joint technology and pre-coated metal body for durability. Enhanced Efficiency: Swirlflow technology delivers 20% more hot water* output.
  • Safety & Ease of Usage: Multiple safety systems including magnesium anode, LED indicators, and fire retardant cable.
  • High-Rise Compatibility: Suitable for high-rise buildings, capable of withstanding 6 bar pressure.
A.O. Smith EWS-5 White | 5 Litre 3KW Instant Water Heater (Geyser) with shock proof Outer Body |5 Levels safety shield |Made for Kitchen and Bathroom Applications, Wall Mounting
  • Instant Geyser with Express Heating: Get instant hot water with a 3000-watt high-powered heating element.
  • Longer Life: Superior quality stainless steel tank provides the best protection against corrosion in hard water conditions.
  • 5-level safety shield for maximum protection: Auto Switch on/off- No overheating, Superior Quality Wiring U/L Rated wiring harness for added safety, Pressure relief valve Protection against high-pressure build up in the tank, ISI marked Power cord added safety, Rust Proof/ Shock Proof HIPS polymer outer body
  • Instant Geyser Suitable for high-rise buildings 6.5 Bar high-pressure rating with superior quality stainless steel inner tank.
  • Complete Peace of Mind with a 5-year warranty on the tank, a 2-year warranty on the heating element, and a 2-year warranty on the overall product, the water heater/ geyser comes protected against manufacturing defects. Dial our toll-free number to arrange hassle-free assistance at your doorstep. PAN INDIA SERVICE NETWORK: AO Smith Instant Water Geysers have a Pan India Service Network.
A.O. Smith EWS-3 Plus-White Glass Lined 3 Litre 3KW Instant Water Heater (Geyser) w/ABS outer Body for High-rise Buildings 8 Bar High Pressure rating for Kitchen & Bathroom, Wall Mounting
  • Premium and stylish aesthetics: EWS Plus is an outstanding design with premium aesthetics, redefining the instant water heater category. It is a perfect balance of form and function that will make your bathroom look magnificent and extraordinary.
  • Longer Life in HARD Water Condition: AO Smith’s patented Blue Diamond glass lining in its tank provides the best protection against corrosion, even in hard water conditions.
  • HIGH-POWERED INSTANT HEATING: Get instant hot water with a high-powered incoloy heating element. Glass coating on the element further enhances the life of the heating element.
  • Stronger construction quality with tank thickness of 2 mm, 2X compared to an ordinary instant water heater
  • 5-level safety shield for maximum protection: ISI marked Power cord added safety, Auto Switch on/off- No overheating., Pressure relief valve Protection against high-pressure buildup in the tank, Superior Quality Wiring U/L Rated wiring harness for added safety, Surface Mount sensing, Thermostat is mounted on the tank. Highly consistent and reliable. Adds to the safety, Rust Proof/ Shock Proof HIPS polymer outer body
Racold Altroi+ 3L 3KW Vertical Instant Water Heater (Geyser) White with Free Standard Installation & Pipes Smart LED Ring Free Electric Plug Convenient for Kitchen & bathroom, Wall Mounting
  • High Pressure Resistance: Your water heater has high pressure withstanding capacity, which makes it suitable for high-rise buildings and high pressure pump applications
  • Temperature Regulation Knob: An easy control knob through which you can regulate heating of water as per your requirement
  • Safety Plus: Three levels of safety against high temperature and pressure, provided by a hightech adjustable thermostat, cut-out and multi function safety valve according to international standards
  • Customized Application : It’s a unique, novel and first of its kind feature in the Instant water heater segment helps you in optimizing water heater usage . You can select ‘KITCHEN’ or ‘BATHING’ mode based on the intended hot water application
  • Smart LED Ring : The Smart LED Ring range senses when hot water is ready for bath, or other application and notifies user by changing LED color from blue to red
Polycab Intenso 5 litre, 3KW Electric Instant Geyser (Water Heater) For Home, Bathroom | Efficient Heating Element | Enhanced Safety Measures | 5 years tank & 2 years product warranty【White Blue】
  • ✅【Efficient Heating Element】Experience instant hot water with the highly efficient heating element.
  • ✅【Durable Engineered Plastic Body】Our Water Heaters boasts a rust-proof engineered plastic body that ensures prolonged durability.
  • ✅【Enhanced Safety Measures】Polycab, known for its core value of Safety with its other electrical categories, incorporates advanced safety standards and internal fire retardant cables for unparalleled protection of your famil
  • ✅【Versatile Usage】 Our compact Water Heater design is perfect for both Bathroom & Kitchen applications.
  • ✅【 Coverage】 PRODUCT WARRANTY By Polycab – 2 year. Tank Warranty by Polycab – 5 years.
Crompton Solarium Neo 3-Litre, 3KW Instant Water Heater/Geyser with Rust Free ABS Body (Ivory)
  • PRODUCT: Crompton’s energy efficient instant water heater with rust proof ABS body
  • TECHNICAL SPECIFICATIONS: Wattage: 3000 W; Capacity: 3L; Pressure 6.5 bar
  • 4 LEVEL SAFETY: Capillary Thermostat, automatic thermal cut-out, pressure release valve and fusible plug
  • ANTI-SIPHON PROTECTION: Designed to prevent any backflow of water and protect the heating element from dry heating damage
  • QUALITY COMPONENTS: ISI marked nickel coated special element to provide resistance against scale formation
Havells Instanio 3 Litre, 3 KW Instant Water Heater (White Mustard)
  • High precision pre-calibrated thermostat, safety valve, preset thermal cutout
  • Fire retardant power cord, high working pressure 0.6 Mpa ideal for high rise building
  • Ultra thick stainless steel inner tank of superior 304 grade
  • Rust and shock proof ABS outer body; Rated voltage: 230 V, 1 Ph, 50 Hz AC
  • Product Dimensions: : 26 cm (Length) x 29 cm (Width) x 41.8 cm (Height)
Crompton Solarium Vogue 3 Litre, 3kW Instant Water Heater/Geyser with Free Installation & Free Pipes (White & Turquoise Blue)”
  • Highgrade Stainless steel weldless Tank to protect from corrosion, rust-proof body
  • ISI marked powerful copper heating element that allows fast water heating
  • Anti siphon protection prevents back flow of water from the Tank protecting the heating element from dry heating
  • 6.5 bar pressure suitable for high buildings for use in Bathrooms, Office Pantry, Kitchen, Automatic Shut Off : Yes
  • Advanced 4 level safety with a high precision thermostat and pre-set thermal cut-out
Goldmedal Insta24 5.5 Liters 3Kw Instant Geyser (Water Heater) With Faster Heating| Preset Thermal Cutout| Stainless Steel Tank Rust Proof| Dual Colour LED Indicator| 2 Years Warranty (WHITE-SILVER)
  • In a world that’s rapidly gravitating towards the instant, embrace the moment with Insta 24, our premier instant water heater.
  • Its elegant design effortlessly merges with modern interiors, while its pre-calibrated thermostat ensures precise temperature control.
  • Equipped with a pressure release valve, Insta 24 is not just about speed, but also safety and sophistication.
  • This water heater comes with Pressure Release Valve, Preset Thermal Cutout, Superior Grade Stainless Steel Tank.
  • Additional Features: Pre-Calibrated Thermostat, Fire Retardant Power Cord & Dual Colour Led Indicator.

Another thing to check is pressure bar capacity of inner tank specially if you like high rise buildings as water pressure can be much more for tank to withhold. You can also consider 4.5kw instant geysers if the house is fairly new with new wiring.