The mercury is at its heights during the hot summer days. As the temperature increase, most of us resort to keeping our homes cool by using air conditions.

Power cuts and Voltage fluctuation is pretty common in those days. This voltage fluctuation can damage appliances.

When we decide to buy any electrical appliances, the first question in our mind is ‘Do we need to invest in a Stabilizer too?’

The stabiliser keeps the appliances safe and doesn’t let those unfavourable fluctuations cause them any trouble.

A Stabilizer is an electrical device used to feed constant voltage-current to electrical appliances like AC and Refrigerators. It protects them from damage due to undesirable voltage fluctuations.

It is essential that you carefully choose the right kind of voltage stabiliser according to the air conditioner that you have and your other requirements.

We have prepared a list of Best Stabilizers for AC based on Customer Reviews and our Market Research.

We highly recommend you to read our buying guide located towards the bottom of this post.

Top 10 Stabilizer For AC In India

Stabilizer for AC Voltage Range (V) Warranty
V Guard VWI 400 130 – 280 3 years
V-Guard VND 400 Plus 150 – 285 3 years
Microtek EM4130+ 130 – 300 3 years
V-Guard VG 400 170 – 270 3 years
V-Guard VG 500 170 – 270 3 years
Microtek EM4150+ 150 – 280 3 years
V-Guard VND400 150 – 290 3 years
V-Guard VWR 400 130 – 300 3 years
Microtek EM4160+ 160 – 285 3 years
Vosta V3 140 – 260 3 years

Which Are The Top 10 Best Stabilizer For AC In India ?


1. V Guard VWI 400 2850-Watt AC Stabilizer

The classy white stabiliser is the perfect combination of sleek and compact design. It is simple to install. If you need a low-cost and efficient stabiliser, then this stabilizer is an ideal choice. Its electronic circuitry is very sophisticated to sense a minimal voltage fluctuation.

This stabiliser is one of the Best Voltage Stabilizers that have a smart display system and provides security. The onboard micro-controller monitors the input voltage and acts instantly during fluctuating.

Key Features

  • It works well in the input voltage range of 130-to-280-volts.
  • It is the perfect stabiliser for inverter air conditioners.
  • It comes with 3-year-warranty on the product.
  • It has a seven segmented digital-display.
  • It provides low and high voltage cut-off protection.

What We Like

  • It can monitor voltage fluctuations well.
  • It is lightweight and can be easily mounted.
  • It is the best voltage stabilizer for your household.
  • It comes with the latest IC-techniques with great stability.

What We Didn’t Like

  • It is a bit expensive.
  • There is no on/off switch in it.

2. V-Guard VND 400 Plus Voltage Stabilizer

These voltage stabilizers for ACs offer excellent functions and advanced-layer-protection to your AC. This stabiliser auto starts when mains are sensed with the input voltage working range.

It is one of the Best Voltage Stabilizers that provides security to your home appliances and electric items. This stabiliser has an innovative look that upscale the interiors of your home.

Key Features

  • It is suitable for ac up to 1.5 Ton.
  • The input voltage range of this stabiliser is 150-285Volts.
  • It provides low & high voltage-fluctuation-protection.
  • It comes with a three-year-warranty.
  • The stabiliser works efficiently under low voltage.
  • It comes with a wall-mounting-cabinet.
  • It has latest IC-technology that assures good stability.

What We Like

  • The stabiliser assures complete security.
  • It is the perfect stabilizer for AC as compared to others.
  • It is long-lasting as it is made of ABS-cabinet.
  • It is elegant and stylish.
  • It doesn’t heat-up.

3. Microtek EM4130+ 130V-300V Digital Display Voltage Stabilizer

The voltage stabilizer is an innovative stabilizer that comes with the latest techniques. It gives better security to the appliances throughout frequent power-cuts and fluctuations. It consumes less electricity and helps to saves huge money on power-bills.

It is based on ‘Save-Power Technology’ and has many unique functions that deliver great performance. This stabiliser is one among the Best Stabilizers in India from the list of stabilizers. Thus, it is the perfect pick for your house.

Key Features

  • It uses save power technology.
  • It is ideal for AC up to 1.5 ton.
  • It has an Intelli microchip-based stabilizer.
  • It comes with an intelligent-system of time-delay.
  • It provides a low and high cut off voltage-protection.
  • It has silver-caked relay system.
  • It needs a power supply of 130-to-300-volts.

What We Like

  • It is affordable.
  • It can be fixed up on the wall.
  • It has a compact design.
  • It is the versatile stabilizers for air conditioners.
  • It comes with a wall-mounted-cabinet.
  • It can monitor and handle fluctuations effectively.
  • It is energy efficient & a good voltage stabiliser.

4. V-Guard VG 400 Voltage Stabilizer

These voltage stabilizers come with a wide range of functionalities that make it a perfect fit for your electronic device. The VG 400 voltage stabiliser works to keep your appliance safe from uncertainties of power outages and voltage fluctuations.

It is one of the Best Voltage Stabilizers in India that comes with excellent technologies for your sensitive efficient appliances and enhance their productivity. This stabiliser is loaded with an inbuilt Thermal Overload Safety for protecting the appliances. It is made of ABS material that lasts for a longer time.

Key Features

  • It is suitable for AC up to 1.5 ton.
  • It is made of ABS-plastic that makes it lasts for a long time.
  • It operates well in an acceptable input voltage ranges from 170-270Volts.
  • It offers high/low-voltage break-in system.
  • The stabiliser is built with thermal overload protection.
  • It comes with the time-delay feature.
  • It comes with three-years-warranty.
  • It comes in a sleek cabinet with wall mountable facility.

What We Like

  • The superior IC technology of this stabiliser provides high-level-protection to your AC.
  • It is one of the best stabilizers that helps the compressor-garner proper balancing time when there are frequent-outages.
  • The ITDS-technology of this stabiliser assures a safety net for the compressors of the AC.
  • It comes with the user-friendly LED Status Indicator.
  • It lasts longer.

5. Microtek EM4150+ 150V-280V Digital Display Voltage Stabilizer

These voltage stabilizers have silicon-based transistors and silver caked relays. It is one of the Best Voltage Stabilizers in India that comes with an Intelli microchip design that provides good performance. This voltage stabiliser comes with an intelligent time delay feature for better-reliability.

It is the right voltage stabilizer for ACs and other appliances. It is based on ‘Save Power Technology’ and has many better functions that give high-performance and better security at the time of electricity cuts. This stabiliser comes in a range of options for different appliance and their voltage needs.

Key Features

  • It is suitable for AC’s up to 1.5 tons.
  • It comes with an advanced seven-segment digital-display.
  • The operating input voltage of this stabiliser is 150-280Volt.
  • It has thermal management and silver-caked relay.
  • It has a smart time delay-systems for giving high-end-performance.
  • The brand provides three years warranty for the product.

What We Like

  • Its slim and compact design makes it the great stabilizer for AC.
  • It is ergonomic and wall-mounting.
  • It provides better-reliability and saves electricity.

What We Didn’t Like

  • It doesn’t have plug-socket. You have to purchase it separately.
  • It has limited input voltage capacity.

6. V-Guard VG 500 Voltage Stabilizer

VG 500 voltage is a high quality Stabilizers for ACs with higher voltage capacity. These voltage stabilizers can work with all type of standard or inverter split air conditioners.

It provides protection from both under volt as well as overvolt situations. It is one of the Best Voltage Stabilizers that are built with the latest features that allows you to never worry about the safety of your AC. It has an intelligent time-delay method that gives protection to your machine. The wall-mountable stabilizer is easy to install with better safety and protection.

Key Features

  • It is suitable for one AC up to 2 ton. The product leads to shutting down outside this range.
  • The voltage stabiliser has aluminium-winding.
  • It works on an average voltage input of about 170-270Volt.
  • It has a built-in thermal-overload protection feature.
  • It comes with a time-delay.
  • It comes with a voltage cut-off option.
  • Its HMC technology provides highly reliable stability for the AC.
  • It offers a warranty period of three years on the product.

What We Like

  • It is one of the best stabilizers as it offers stability from both under volt as well as overvolt situations.
  • It is long-lasting as this stabiliser is made of ABS-based plastic.
  • It comes with a smart delay time for better reliability.
  • The latest IC technology of this stabiliser assures the safety of AC.
  • It uses to save power technology, which gives better-reliability during frequent-cuts and voltage fluctuations.
  • It automatically steps up and down.
  • It is considered the best voltage stabilizer.
  • This stabiliser is compact and affordable.

What We Didn’t Like

  • It doesn’t have an input/output voltage display.

7. V-Guard VND400 Voltage Stabilizer

It is one of the Best Voltage Stabilizers that offers smart characteristics that provides an advanced layer of protection to your AC. It is a extraordinary performance voltage stabiliser for ACs with auto-start function when connected to the power supply with the designed input voltage range as per requirement.

This stabiliser offers superior technology with factors like automatic reset, time-delay and high/low voltage cut-off. The built-in thermal overload protection guards the stabilizer and compressor during high-temperature burnout.

Key Features

  • It is suitable for AC up to 1.5 ton.
  • The input power range of this stabiliser is 150-to-290-volts.
  • It provides low & high halt protection.
  • It features thermal overload protection.
  • It offers a warranty of three years on the product.
  • This stabiliser is equipped with the latest IC technique.
  • The capacity of the stabiliser has a capacity of 12 amperes.

What We Like

  • It is long-lasting and durable as this stabiliser has excellent ABS cabinet.
  • It doesn’t heat up.
  • It is elegant.
  • It is easiest to maintain.
  • It comes with a wall-mountable-cabinet.
  • This stabiliser can work efficiently under low voltage condition.

8. V-Guard VWR 400 Voltage Stabilizer

The Voltage Stabilizer comes with the state-of-the-art technology to provide secure protection to your air conditioner. It comes with a smart digital-display, overload-protection and a host of other features.

It is the Best Voltage Stabilizer because it shields your home appliances and electronic items. This stabiliser has an innovative design that adds value and upscale the interiors from your home.

Key Features

  • It is ideal for AC up to 1.5 Ton.
  • It comes with the latest IC technique.
  • The voltage of this stabiliser is 130-300Volts.
  • It provides low and high voltage break protection.
  • It supports built-in thermal-overload-protection that protects the stabiliser and compressor.
  • It comes with the time-delay option.
  • This stabiliser comes with three-years-warranty.

What We Like

  • It is easier to mount on the wall.
  • It has a time delay system.
  • This stabiliser is durable and provides complete power-protection.
  • It comes with the digital display.
  • It supports the compressor to balance the load effectively.

9. Microtek EM4160+ 160V-285V Digital Display Voltage Stabilizer

The Voltage Stabilizer gives better-performance, better reliability during Power Cuts and Voltage Fluctuations. It gives superior-performance during power-cuts.

It is the Best Stabilizer because it helps to save your electricity and is fully equipped with powerful tech machines. It has a suitable micro chop based design. This stabiliser effectively cut off the low and high voltage from reaching the equipment. It is one of the most preferred stabilizers in the Indian market.

Key Features

  • This stabiliser is suitable for ACs of up to 1.5 tonnes.
  • Its effective input voltage is 160-285 volts.
  • It comes with the low and high cut-off-protection system.
  • It offers durability and strength to stabilisers as it is made of metal.
  • It has an Intelli Microchip-based voltage stabilizer.
  • It comes with silver caked relays.
  • It comes with a Save Power technology.
  • It provides three years warranty on the product.

What We Like

  • It is easy to mount.
  • It is compact and durable.
  • It comes with smart time delay system.
  • It comes with a digital input/output display.
  • This stabiliser handles voltage fluctuations efficiently.

What We Didn’t Like

  • Its cable quality is average.
  • There is no on/off switch.

10. Vosta V3 Voltage Stabilizer By Powermax Fitness

These voltage stabilizers for ACs are made for heavy treadmills and home-appliances such as LED, LCD Television, Refrigerator, AC, etc. It provides great performance for your equipment. These voltage stabilizers are ideal for treadmills and home use appliances.

It has a stable-design for huge voltage, under-voltage, overload and overheats to protect your equipment. It is one of the Best Voltage Stabilizers in India that are 100% copper and CE certified.

Key Features

  • It is integrated with zero cross-switching techniques with highly efficient, 100% copper winding toroidal transformer.
  • The stabiliser works on a voltage of 140-260 VAC.
  • It has 6s to 180s of time-delay function.
  • Its CRGO-transformer gives maximum output efficiency of 98%.
  • It has an MCU controlled circuit for precision and regulated output.
  • It comes with a digital LCD that shows input voltage and output voltage with 3 LED indicators.
  • It comes with three years of powermax domestic Indian-warranty.
  • It assures the safety of devices connected to the stabilizer with its high & low voltage power cut-off protection.

What We Like

  • It better monitor and handles when voltage fluctuates.
  • It is long-running.
  • The stabiliser is easily mountable.
  • It offers full security for overheat and short circuit.

What We Didn’t Like

  • Vosta V3 stabiliser is a bit pricey.

How To Choose The Best Stabilizer For AC?

All the home-appliances come with their specifications and features. In this section, we have some factors that will help you to find the best stabilizer for your home. Before buying a voltage stabiliser for your AC, keep these points in your mind:

Different electrical devices work on different voltages and use different units of electricity. So, there is a different type of voltage stabilisers for single-phase and three-phase voltage power supply.

The standard voltage is around 230 volts, alternate at 50 cycles (Hertz) per seconds.

Know the Load Connected to Your Stabilizer

The total power of any device can be calculated by multiplying 230 x max rated current.

(The current, voltage & power-rating of the invention is mentioned in the specification sticker or the user manual.)

Once you have an idea about the range of power-consumed by an AC, it will help you to select a suitable stabiliser for the air conditioner of your home.

Choose the Right Size of the Stabilizer

The size of the stabiliser is similar to that of an inverter or a UPS. All the stabiliser come in either Volt-Ampere (VA) or Kilo Volt Ampere (kVA).

1 kVA = 1000VA

You must calculate the correct amount of power of voltage stabiliser that you will need.

For instance, if the sum of watts connected to the stabiliser is 1000, then you need to take a 1200VA stabiliser.

The watt value must be raised by 20% to get an approximate value of VA size that is suitable for you.

The 20% value is only for households, but not for commercial purposes, as the power factor is terrible.


There is always a risk of stabiliser getting damaged due to power surges or wet when placed on the ground or anywhere unsafe. Therefore these stabilisers will need to keep at a higher place than the ground level.

Keeping the stabiliser at a more important platform protects it from any damage, and it also saves children in the house from an electric shock or any injury.

Hence wall-mountable voltage stabiliser is recommended.

Time-Delay Systems

This feature of the stabiliser allows the compressor to enables a time-lapse to generate the required voltage. In the case of a power cut, this feature gives compressors sufficient time to balance the current flow and required voltage.


It displays the voltage which has been regulated by the stabiliser.

Some of the great models include LED-indicator in the body.


A lot of the advanced models are digitised to making the function of voltage stabiliser more accurate.

The digital technology of the voltage stabiliser helps it to adapt it to several appliances.


Some stabilisers have surge protection or spike guard that turns off the stabiliser output in case of short circuits or any burn-out. Most of the stabilisers come with copper windings, but some of the products use aluminium windings.

Frequently Asked Questions



 1. How Much Electricity Do Voltage Stabilizers Consume?

Electricity consumption of the stabiliser depends on the efficiency of the stabiliser. It only consumes about 2-5% of the maximum load.

So if you have 1kVA stabiliser, it would consume about 50 Watts.

2. What Are the Reasons for Voltage Fluctuation?

Voltage fluctuation can cause due to bad wiring, overload, sudden switching on of high powered devices (like refrigerators, air conditioners), bad earthing, or short circuits.

3. Does a Stabilizer Give Constant Voltage Output?

Voltage stabilisers stabilise the voltage to the load. These are not meant to provide a constant output of voltage.

It runs the device in a safe voltage range.

4. Can Regular Stabilizer Be Used for the Air Conditioner?

No, regular stabiliser can’t be used for the air conditioner. For AC, you need extra safety. The intelligent time delay system (ITDS) technology ensures maximum protection to the AC.

5. Does Stabilizer Reduce Electricity Bills?

The stabiliser will keep your power consumption stable and may reduce it. However, the stabiliser itself wastes up to 5% of the energy unless you run it at peak load.

It only protects the load from brownouts and surges.