Lets compare the water heater also known as geyser in India of both AO Smith and VGuard.

This difference is basically for storage water heaters and we expect almost similar features in instant water heaters too. You can read the difference highlighted in the table below:

FeaturesAO Smith Water HeaterVguard Water Geyser
Inner Tank ProtectionBlue Diamond glass lined tank with magnesium anode rodAdvanced Vitreous Enamel Coating with Sacrificial Magnesium Anode rod
Heating ElementIncoloy element with glass coatingIncoloy 800 element
Outer TankCorrosion-resistant powder coat mild steelCorrosion-resistant powder coat mild steel
Warranty2 yr comprehensive
3 yr heating element
7 yr tank warranty
2 yr comprehensive
3 yr heating element
5 yr tank warranty
Temperature AdjustmentTemperature Control Knob from 25-75°CTemperature Control Knob from 25-75°C
Here AO Smith geysers offer better heating element protection and tank warranty, rest everything seems same. Few good AO Smith Deals to check below ….
AO Smith Geyser 15 Litre 5 Star Rating (BEE) | Powerful 2KW Heating | Storage Water Heater With 2X Corrosion Resistant Blue Diamond Glass Tank | Warranty: 5 Yr Tank, 2 Yr Comprehensive | HSE-SHS-015
  • DOUBLE PROTECTION FOR SAFETY: Enjoy ultimate peace of mind with this AO Smith 15-litre water geyser. It features a factory-set thermostat, multi-function safety valve, and thermal cut-out, ensuring safe and reliable hot water for your bathroom every day.
  • DURABLE & ELEGANT DESIGN: This AO Smith 15-liter water geyser is crafted with a glossy ABS plastic body and blue diamond glass-lined tank for 2X corrosion resistance, making it the best 15L storage water heater for style and durability.
  • ENERGY-EFFICIENT 5-STAR GEYSER: Save on electricity bills with this BEE 5-star rated 15-litre geyser. Perfect for eco-conscious homes, this water heater ensures efficient heating while reducing energy consumption, making it a top choice in India.
  • BUILT FOR HIGH-PRESSURE USE: This AO Smith 15-liter storage water geyser can handle up to 8 bars of pressure, making it ideal for high-rise apartments or hard water areas. Enjoy uninterrupted hot showers without compromising performance.
  • LONG-LASTING WARRANTY COVERAGE: With a 5-year warranty by AO Smith on the inner tank, 2 years on the glass-coated heating element, and 2 years comprehensive by AO Smith, this AO Smith 15-litre water heater offers unparalleled after-sales support for peace of mind.
AO Smith Geyser 15 Ltr With 5 Star BEE Rating, Vertical Water Heater | Geyser 15+ Litre For High Rise Building | 7 Year Tank Warranty, 2 Year Comprehensive Warranty | SDS-GREEN-015
  • HOT WATER WITH DURABLE DESIGN: Discover the indulgence of instant hot water with our AO Smith 15 Litre Geyser. Powered by a 2000W heating element and Blue Diamond Glass-Lined Tank, this 5-star rated water heater offers 2X corrosion resistance, delivering lasting durability and endless hot showers.
  • HIGH-PRESSURE PERFORMANCE: Perfect for high-rise apartments, this AO Smith 15L water heater handles 8 Bar pressure with ease. Its custom-built anode rod fights hard water, doubling the unit's lifespan for reliable, long-lasting comfort.
  • ENERGY-EFFICIENT SAVINGS: Enjoy significant savings on your electricity bills with our 5-Star BEE-rated 15L geyser. Its ABS outer body adds a modern touch, while the energy-efficient design guarantees reduced power consumption.
  • LONG-LASTING QUALITY: Say goodbye to frequent maintenance with our Glass-Coated Heating Element, designed to combat scale and sediment. This AO Smith water heater is built to last, offering you hassle-free, reliable hot water every day.
  • FREE INSTALLATION: Enjoy hassle-free setup with free installation. Experience the comfort of instant hot water without added installation costs. Free Installation is applicable up to municipal city limit. Free Installation does not include any additional material e.g. connecting hoses, water inlet & outlet, pipe nipples, any additional material, electrical fittings & Demounting of old geyser etc.
AO Smith SGS-GREEN SERIES-006 Storage 6 Litre Vertical Water Heater (Geyser)|33% Faster Heating|Save on Energy Bills with BEE 5 Star Rating|Enhanced Durability with Blue Diamond Tank Coating|ABS Body
  • FASTER HEATING WITH EXPRESS HEAT TECHNOLOGY: Get hot water in no time! This AO Smith 6 litre geyser heats water 33% faster with its advanced 3kW heating element, making it the perfect solution for busy mornings and smaller households.
  • EXTRA DURABILITY WITH BLUE DIAMOND TANK: Enjoy lasting performance with the Blue Diamond Glass-Lined Tank in this AO Smith 6 litre water geyser. It resists corrosion for a longer lifespan, making it a top-rated 6 litre geyser with 5-star efficiency.
  • PEACE OF MIND WITH LONG WARRANTIES: Relax knowing your AO Smith geyser 6 litre is built to last, featuring a 7-year tank warranty, 2+1 years warranty on the Glass-Coated Heating Element, and 2 years comprehensive warranty by AO Smith for dependable water heating every day.
  • SAVE ENERGY WITH 5-STAR EFFICIENCY: This water geyser 6 litre storage unit boasts a 5-star BEE rating, ensuring lower electricity consumption, reduced bills, and eco-friendly water heating for your home without compromising on performance.
  • STYLISH & COMPACT FOR SMALL BATHROOMS: Designed for modern homes, this sleek AO Smith 6 litre geyser fits effortlessly into smaller bathrooms. Its compact size enhances your space while delivering reliable water heating in style.
AO Smith Horizontal Geyser 15 Litre (Right)| Storage Water Geyser With Glass Coated Heating Element | Electric Geyser With Durable Metal Body | Warranty: 7 Yr Tank, 2 Yr Comprehensive | HAS-X1-015-RHS
  • DOUBLE CORROSION RESISTANCE FOR LONG-LASTING DURABILITY: Protect your investment with AO Smith’s Blue Diamond Glass Lined Tank in this 15-liter geyser. It ensures double resistance against corrosion, making it ideal for hard water areas. Enjoy hot water for years without tank degradation.
  • ADVANCED ENERGY-SAVING TECHNOLOGY FOR LOWER BILLS: Save more with the 4-star rated AO Smith storage water heater. Its advanced PUF insulation minimizes heat loss, retaining warmth longer and reducing power consumption, making it an energy-efficient choice for your bathroom.
  • SUPERIOR SAFETY WITH MULTIPLE PROTECTION FEATURES: Stay safe with the 15-liter AO Smith geyser, equipped with thermal cut-out and a multi-function safety valve. Designed to prevent overheating and pressure build-up, it’s the ideal water heater for bathrooms.
  • ELEGANT METAL BODY THAT BLENDS WITH ANY DÉCOR: Add style to your bathroom with this sleek AO Smith 15 ltr geyser. Built with a robust metal outer body, it’s not only durable but also enhances your bathroom’s aesthetics, ensuring functionality meets style.
  • ELEGANT METAL BODY THAT BLENDS WITH ANY DÉCOR: Add style to your bathroom with this sleek AO Smith 15 ltr geyser. Built with a robust metal outer body, it’s not only durable but also enhances your bathroom’s aesthetics, ensuring functionality meets style.
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.
AO Smith HAS-X1-025-LHS Storage 25 Litre Horizontal Water Heater (Geyser) Rust-proof outer Body|Compact Size|Fits under false ceilings|Suitable- High-rise Buildings|8 Bar High Pressure rating
  • DOUBLE CORROSION RESISTANCE FOR LONG-LASTING DURABILITY: Protect your AO Smith 25 litre geyser from hard water damage with a Blue Diamond Glass Lined Tank. This advanced feature ensures double corrosion resistance, providing long-lasting durability and uninterrupted hot water for years.
  • ENERGY-SAVING TECHNOLOGY FOR LOWER POWER BILLS: This 25 litre geyser with 4 star rating minimizes electricity consumption. The advanced PUF insulation retains heat longer, reducing power usage, so you save money while enjoying energy-efficient hot water every day.
  • SUPERIOR SAFETY WITH MULTIPLE PROTECTION FEATURES: Stay safe with the AO Smith geyser 25 litre water heater. Equipped with thermal cut-out and a multi-function safety valve, it prevents overheating and pressure build-up, ensuring reliable and worry-free operation in your bathroom.
  • WARRANTY FOR PEACE OF MIND: AO Smith offers the best-in-class warranty on its 25 litre water geyser: 7 years on the tank, 2+2 years on the glass-coated heating element, and 2 years comprehensive warranty by AO Smith. Trust this water heater for long-term performance.
  • HASSLE-FREE INSTALLATION WITH ESSENTIAL KIT INCLUDED: The AO Smith 25 litre electric geyser comes with all necessary accessories for easy installation, including mounting screws and a user manual. Setting up your water heater has never been so quick and effortless.
AO Smith HeatBot Wifi 25L Silver | Smart Storage Vertical Water Heater (Geyser with Alexa) with Free Installation | Voice & Smart App Control | Personalised Modes & Scheduler | Digital Touch Display
  • Type: Storage ; Capacity: 25 Litres; Wattage: 2000 Watts; Pressure: 8 Bars ; BEE Rating: 4 Star;
  • Superior Technology : HeatBot Wifi Water Heater (Geyser) has superior durability with patented Blue Diamond Glass Lined tank it reduces scaling accumulation & corrosion on the tank caused due to hard water. Long-lasting Protection: Customized alloy Anode offers 2X lifespan in comparision to ordinary geyser.
  • Energy Efficient: Save on electricity bills with advanced PUF insulation, which retains heat effectively
  • Elegant Design: Digital Touch Display & Durable shock proof ABS plastic body with a sleek, modern look.
  • Smart Modes with options of Bucket Bath, Shower, Pedicure, Washing and Mopping enable you to personalise your hot water requirements as you like it and saves electricity with intelligent functions. Warranty by AO Smith: 7 years on tank, 2 years on product, and 2 + 2 years (extended warranty) on heating element.
AO Smith HeatBot 25 Litre Remote Controlled Water Heater with 2kW Heating Element, Blue Diamond Glass Tank | Wall Mount Geyser for Bathroom | Long lasting with 2+2 Year Extended Warranty SZS-025-DG
  • POWERFUL HEATING WITH 2000W & 8 BAR PRESSURE: Get instant hot water with the AO Smith 25ltr geyser for bathroom! Its 2000W heating and 8-bar pressure make it perfect for high-rise buildings. No more waiting—this water heater 25 litre geyser delivers instant warmth.
  • LONG-LASTING BLUE DIAMOND GLASS-LINED TANK: Built for durability, this 25 liter geyser water heater 4 star features a Blue Diamond Glass-Lined Tank and heating element with 2X corrosion resistance.
  • SMART GEYSER WITH REMOTE CONTROL CONVENIENCE: Upgrade to a 4 star rating geyser 25 litres with smart features! Adjust the temperature, set smart timer, and enjoy automatic heating with the wireless remote—effortless comfort at your fingertips.
  • ENERGY-SAVING 4-STAR RATED WATER HEATER: Save on electricity bills with this 4 star rating 25 litre geyser. Its Advanced PUF Technology locks in heat for longer, making it an ultra-efficient water heater for everyday use.
  • STYLISH, SHOCK-PROOF & RUST-RESISTANT DESIGN: The AO Smith geyser 25 ltr 4 star rating is crafted with a high-quality ABS body, offering a shock-proof and rust-resistant finish. It blends seamlessly into any modern bathroom—durability meets elegance.
AO Smith EWS Plus Instant Water Heater 3 Litre with 3kW Incoloy Heating Element | 8 Bar Pressure Rating for High-rise Building | Instant Geyser for Kitchen & Bathroom | 5-Year Tank Warranty
  • SLEEK DESIGN FOR YOUR KITCHEN AND BATHROOM: Elevate your space with the AO Smith geyser 3 litre. Its sleek and modern design seamlessly blends into any kitchen or bathroom, making it the perfect kitchen geyser 3 litre for compact spaces and stylish homes.
  • CORROSION RESISTANCE FOR HARD WATER DURABILITY: Designed to last, this 3 litre geyser features a Blue Diamond glass-lined tank that resists corrosion even in hard water. Trust the durability of this electric geyser 3 litre to provide years of reliable performance.
  • RAPID HEATING FOR INSTANT COMFORT: Enjoy hot water on demand with the instant geyser 3+ litre. Its advanced glass-coated heating element ensures quick and efficient heating, making it an ideal kitchen instant water heater for busy mornings.
  • PERFECT FOR HIGH-RISE APARTMENTS: Built tough, this geyser 3 litre is perfect for high-rise living with its 8 Bar pressure rating and heavy-duty 2mm tank. Whether as a kitchen geyser or a small geyser for bathroom, it handles high-pressure needs effortlessly.
  • SAFETY YOU CAN TRUST FOR YOUR FAMILY: Stay worry-free with the AO Smith geyser 3+ litre, offering 5-level safety protection. This includes an ISI power cord, pressure relief valve, and shockproof outer body, ensuring your geyser kitchen is safe for everyone.

AO Smith is USA based global manufacturer of water heater only. That’s their specialty so obviously one can trust them with single thing manufacture and does it the best. Like the glass coated heating element was introduced to India by AO smith only.

Vguard is a Kochi KL based company which is more than 4 decades old. As the name suggests started as voltage stabilizer based co and later ventured into other products using it old reliable service network.