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 Splendora 3L 3KW Vertical Instant Water Heater For Home | Geyser For Bathroom & Kitchen | High Grade SS Tank | Copper Heating Element | 1-Yr Product 2-Yr Element 5-Yr Tank Warranty 【White】
  • ✅ Free Installation and Free Inlet pipes worth Rs.600 by brand.
  • ✅ ABS outer body with SS tank
  • ✅ Copper heating element with efficient longer life
  • ✅ Suitable for 6 bar pressure
  • ✅ Unique Weld free joint in outer metal body
Racold Pronto Pro 3L 3KW Vertical Instant Water Heater (Geyser) | Faster Heating | Suitable for High Rise Buildings | Italian Design|3 Levels of Safety|Convenient for Kitchen & Bathroom Applications
  • PUF INSULATION: the dense and thick insulation in the tank effectively retains heat, improving energy efficiency and lowering electricity costs
  • FASTER HEATING: the high-capacity heating element ensures rapid access to hot water
  • AUTO CUT OFF: the stem-type thermostat and cutout feature provide automatic temperature control and added safety for your water heater
  • NO BACK FLOW: the anti-syphoning system prevents water from flowing back into the container, thus avoiding dry heating
  • HIGH PRESSURE RESISTANCE: the water heater has high pressure withstanding capacity, which makes it suitable for high-rise buildings and high pressure pump applications
Lifelong 5 litre Instant Geyser – Instant Water Heater for Home – 3000 W Electric Geyser with 4 Level Advance Safety Suitable for Kitchen & Bathroom (LLIWH105)
  • Robust and Rust-Resistant Design: The Lifelong electric instant geyser for home boasts a sturdy build that ensures longevity and resilience against heat.
  • LED Indicator Convenience: This hi-tech instant water heater is equipped with LED indicators; a green light signifies the heating process, turning off once the perfect hot water is prepared for use.
  • Pan India Paid Installation Available by Brand. Inlet And Outlet Connection Pipes can be purchased from the technician on a chargeable basis. Terms & Conditions Applied.
  • Advanced Safety Features: Incorporates a steam thermostat, automatic thermal cut-out, pressure release valve, and fusible plug, always prioritizing user safety.
  • Efficient Heating with Copper Elements: The geyser’s copper heating elements deliver optimal performance, resisting oxidation, carbonization at high temperatures, and corrosion, especially in challenging weather conditions.
AO Smith EWS-5 White Instant Geyser 5 Litre With 3kW Express Heating | High Rise Building Bathroom & Kitchen geyser | UL Rated Wiring & Pressure Relief Valve For Ultimate Safety | 5 Year Tank Warranty
  • INSTANT HOT WATER HEATER FOR YOUR HOME: Experience the comfort of instant water heater technology with our 3000-watt element. Whether for your bathroom or kitchen, this instant water heater delivers hot water in seconds, perfect for cold mornings.
  • DURABLE STAINLESS STEEL GEYSER 5 LTR: Our geyser 5 litre with a stainless steel tank is built to resist corrosion even in hard water. Designed for long-lasting performance, this 5 litre geyser ensures you enjoy dependable hot water every day.
  • ADVANCED SAFETY FEATURES FOR YOUR FAMILY: Stay protected with our electric geyser featuring a 5-level safety shield. From overheating control to a rust-proof body, this instant water heater for bathroom guarantees total peace of mind for you and your loved ones.
  • HIGH-PRESSURE READY FOR HIGH-RISE HOMES: Perfect for high-rise living, our water heater 5 litre handles up to 6.5 Bar pressure effortlessly. This hot water geyser for bathroom ensures consistent performance, even in multi-story buildings.
  • WORRY-FREE WARRANTY FOR YEARS TO COME: Invest in confidence with a 5-year tank warranty and 2-year product warranty by AO Smith. Our instant water heater is backed by comprehensive coverage, ensuring you get the best experience without worry.
Crompton Solarium Vogue 3-Litre, 3KW Instant Water Heater/Geyser with free Installation & Pipe (White and Turquoise Blue)
  • Premium Finish ABS Outer Body that compliments your interiors
  • Food Grade Inner Tank: 304 Grade Stainless Steel Inner Tank; also suitable to be used in the kitchen
  • Color changing LED Indicator: LED Indicator for power on & heating function
  • Powerful Heating: 3000-Watts Copper Heating Element for 33% faster heating
  • Withstands a pressure of 6.5 Bar: Suitable for high rise buildings and pressure pump applications
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
Bajaj Shield Series Aerono 1L 3KW Instant Water Heater/Geyser For Home|Non Stick Heating Element|Withstand 6 Bar Pressure|Shock Resistant & Rust Proof|Withstand 4.5KV Surge Voltage|3-Yr Warranty|White
  • Bajaj DuracoatTM Non stick heating element Bajaj DuraNteTM Thermostat Bajaj VoltageProTM – Withstand 4.5KV surge Voltage
  • Shock resistant & rust proof Engineering Thermoplastic body Indicator for power on & heating function
  • Multiple safety system High Grade SS Tank
  • BIS Approved ISI marking Fire Retardant cable
  • Tank suitable to withstand 6 bar pressure
Racold Pronto Neo 1L 3Kw Vertical Instant Water Heater(Geyser), White | Faster Heating | Italian Design |Suitable for High Rise Buildings |3 Levels of Safety | Rust Proof Body | Fire Retardant Cable
  • PUF Insulation: The high density and thick PUF in your water heater ensures retention of internal heat and temperature and resulting in better energy efficiency and reduced electricity bills
  • Faster Heating: The high power heating element ensures you get hot water in no time
  • High Pressure Resistance: High pressure withstanding capacity makes it suitable for high rise buildings and high pressure pump applications
  • Safety Plus: Pronto neo provides three levels of safety against high temperature and pressure, provided by a high tech adjustable thermostat, cutout and multifunction safety valve conforming to international standards
  • Auto Cut off: Stem-type thermostat and cutout ensures automatic temperature control and extra safety for your water heater

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.