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 HSE-SHS-015 Storage 15 Litre Vertical Water Heater (Geyser) ABS BEE 5 Star Superior Energy Efficiency Enhanced Durability Blue Diamond Glass Lined Tank, High Rise Buildings, Wall Mounting
  • Type : Storage ; Capacity 15 Liters, Wattage 2000 Watts; Pressure : 8 bars Factory set thermostat - Max 75C Double Protection with Thermal Cut-Out and Multi-function Safety Valve
  • Outer Body - ABS Plastic - superior glossiness and surface finish. Inner Tank Material: Blue Diamond Glass Lined Tank- 2X Corrosion Resistance
  • Warranty: 5 years on inner tank, 2 years warranty on glass coated heating element and 2 years comprehensive
  • BEE 5 Star rated for Maximum energy savings
AO Smith Geyser 15 Ltr With 5 Star BEE Rating, Vertical Water Heater With Quick Heating | Geyser 15+ Litre For High Rise Building | 7 Year Tank Warranty, 2 Year Comprehensive Warranty | SDS-GREEN-015
  • INSTANT LUXURY HEATING: 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.
  • SAFETY-FIRST DESIGN: Feel confident with a shock-proof, ABS outer body on our AO Smith 15L Geyser. Built for safety and reliability, it’s the ideal addition to your bathroom for secure, fast-heating comfort.
AO Smith 6 Liter Geyser with 3KW Element | 33% Faster Heating | Storage Geyser | Blue Diamond Glass-Lined Tank for 2X Corrosion Resistance | Warranty: 7 Yr Tank, 2 Yr Comprehensive | SGS-GREEN-06
  • 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 on the Glass-Coated Heating Element, and 2 years comprehensive coverage 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.
  • LOW-MAINTENANCE GLASS-COATED HEATING ELEMENT: Minimize upkeep with the Glass-Coated Heating Element in this AO Smith 6 litre geyser. It prevents scale buildup, ensuring consistent hot water and hassle-free maintenance, ideal for your busy lifestyle.
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.
AO Smith HAS-X1-015-RHS Storage 15 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 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.
  • EXTENDED WARRANTY FOR COMPLETE PEACE OF MIND: Trust AO Smith’s 15l storage geyser with an unbeatable warranty: 7 years on the inner tank, 2+2* years on the glass-coated heating element, and 2 years comprehensive coverage. Reliable and long-lasting, perfect for any home.
AO Smith HeatBot-SZS-015 - SILVER Storage 15 Litre Vertical Water Heater (Geyser) Silver - 4 Star
  • Type: Storage ; Capacity: 15 Litres; Wattage: 2000 Watts; Pressure: 8 Bars ; BEE Rating: 4 Star;
  • Inner Tank Material: Blue Diamond Glass Lined Tank- 2X Corrosion Resistance; Outer Body Material: ABS
  • Product Dimensions: 40.8 cms X 39.5 cms X 37 cms
  • Warranty: 7 years on inner tank, 2+2* years extended warranty on glass coated heating element and 2 years comprehensive
  • Included in the box: 1 Vertical Storage Water Heater, User Manual , Mounting Screws
Crompton Arno Neo 10-L 5 Star Rated Storage Water Heater (Geyser) with Advanced 3 Level Safety, National Energy Conservation Award Winner 2023
  • PRODUCT: Crompton's energy efficient storage water heater with fast heating
  • TECHNICAL SPECIFICATIONS: Wattage: 2000 W; Capacity: 10L; Star Rating 5; Pressure 8 bar
  • 3 LEVEL SAFETY: Capillary Thermostat, automatic thermal cut-out & multi-functional valve to provide higher safety
  • ANTI-RUST: Fitted with specially designed magnesium anode which prevents corrosion due to hard water quality
  • QUALITY COMPONENTS: ISI marked nickel coated special element to provide resistance against scale formation
AO Smith HeatBot-SZS-015-DG- SILVER Storage 15 Litre Vertical Digital Display Remote Controlled Water Heater (Geyser) Silver - 4 Star
  • Type: Storage ; Capacity: 15 Litres; Wattage: 2000 Watts; Pressure: 8 Bars ; BEE Rating: 4 Star;
  • Blue Diamond Glass-Lined Tank for 2X corrosion resistance
  • Installation: Water Heater Free Installation is applicable up to municipal city limit of Bangalore, Chennai, Hyderabad, Secunderabad, Pune - PCMC, Delhi, Noida, Faridabad, Ghaziabad, Gurgaon, Kolkata, Howrah and Hooghly. 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. In rest of the cities, installation will be provided by the brand
  • Inner Tank Material: Blue Diamond Glass Lined Tank- 2X Corrosion Resistance; Outer Body Material: ABS
  • Product Dimensions: 40.8 cms X 39.5 cms X 37 cms
AO Smith HeatBot-SZS-025 - SILVER Storage 25 Litre Vertical Water Heater (Geyser) Silver - 4 Star
  • Type: Storage ; Capacity: 25 Litres; Wattage: 2000 Watts; Pressure: 8 Bars ; BEE Rating: 4 Star;
  • Long-lasting Anode Rod a customised alloy that works even in hard water conditions to protect the tank and has 2X lifespan as compared to normal magnesium rod.
  • Installation: Water Heater Free Installation is applicable up to municipal city limit of Bangalore, Chennai, Hyderabad, Secunderabad, Pune - PCMC, Delhi, Noida, Faridabad, Ghaziabad, Gurgaon, Kolkata, Howrah and Hooghly. 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. In rest of the cities, installation will be provided by the brand
  • Inner Tank Material: Blue Diamond Glass Lined Tank- 2X Corrosion Resistance; Outer Body Material: ABS
  • Glass-Coated Heating Element to prevent scale formation and extend the life of heating element

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.