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Best Voltage Stabilizers in India Reviews & Buying Guide 2021

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Voltage fluctuations are quite common in India. They can cause harm to most of the electrical appliances at your home such as the fridge, television, air conditioner, etc. Sometimes, they can even damage the appliance permanently.

Selecting the right kind of stabilizer for the electrical appliances at your home can help you get rid of this problem. A good stabilizer prevents unwanted voltage fluctuations from entering into the electrical appliances, making the operation hassle-free.

There are two main factors that you should consider before buying a voltage stabilizer. They are:

Stabilizer Working Range:

Each stabilizer comes with a minimum and a maximum input voltage to which it can stabilize the output voltage. For example, let’s say that the input voltage range of a voltage stabilizer is 150 V (min) –250 V (max). Now, if the voltage in your house either goes below 150 V or above 260 V, the stabilizer will cut off the electric power supply to the appliance.

However, if the voltage is within the working range i.e. if it is either 170 V or 200 V, then the stabilizer will try to stabilize it to provide a desired output voltage range.

Stabilizer Type:

The voltage stabilizers are designed on the basis of the appliance that you are going to use it with. You cannot just pick a stabilizer and use it with any device. The different types of stabilizers available in the market are:

  • Stabilizer for refrigerator of different capacities
  • Stabilizers for AC
  • Stabilizers for washing machines, microwaves, etc.
  • Digital stabilizers for TV, music system, etc.

To help you buy the best stabilizer, we have shortlisted 10 best voltage stabilizers for TV, AC, Refrigerator, and Washing Machine. We have shortlisted them on the basis of brand quality, customer reviews, and different requirements of the customers.

To help you understand the factors that play a major role in deciding its effectiveness, we have included a buying guide at the end of the article.

Best Voltage Stabilizers in India 2021

ProductsCapacityWorking RangeWarrantyBuy Now
Voltage Stabilizers for Inverter AC
V-Guard VG 400 Voltage StabilizerUp to 1.5 Ton170V-270V3 YearsCheck On Amazon
Microtek EM4170+ Voltage StabilizerUp to 1.5 Ton170V – 270V3 YearsCheck On Amazon
MONITOR Voltage StabilizerUp to 1.5 Ton170V – 270 V5 YearsCheck On Amazon
Voltage Stabilizers for TV
V-Guard Voltage StabilizerUp to 32-inch TV90V – 290V3 YearsCheck On Amazon
Everest ECC 100 Voltage StabilizerUp to 72-inch170V – 270V5 YearsCheck On Amazon
Microtek EMT1390 Voltage StabilizerUp to 65-inch140V – 290V5 YearsCheck On Amazon
Monitor Voltage StabilizerUp to 48-inch90V -300V3 YearsCheck On Amazon
Voltage Stabilizers for other Appliances
V-Guard VGSD 50 Voltage StabilizerUp to 300 liters130V -290V3 YearsCheck On Amazon
Microtek Voltage StabilizerN/A130V -200V2 YearsCheck On Amazon
V-Guard VM 500 Voltage StabilizerN.A150V – 280V3 YearsCheck On Amazon

Best Voltage Stabilizers for Inverter AC

1. V-Guard VG 400 Voltage Stabilizer

V-Guard VG 400 Voltage Stabilizer

This V-Guard voltage stabilizer is equipped with advanced IC technology to protect even sensitive appliances thereby enhancing their life. It comes with an input voltage of 170V to 270V and has a low and high cutoff protection to safeguard all your devices from upsurges and low voltages.

Besides working on such a wide voltage range, this stabilizer is made of ABS plastic. So, it can last long even when you mount it on moist surfaces.

With the intelligent time delay system, LED indicator and thermal overload protection, this voltage stabilizer is perfect for safeguarding up to 1.5 ton AC’s. 

Safety Features:

  • Low and high voltage cutoff.
  • Advanced IC technology corrects the input voltage for a better output voltage.
  • LED indicator to display input and output voltage.
  • Thermal overload protection to prevent overheating of your appliances.
  • Sleek (32.8 x 21.6 x 15.2 cm) design for easy installation.
  • ABS plastic body to resist flames.

Warranty and Service:

This stabilizer comes with a 3-year warranty from the brand. You can also claim another 2-year warranty from the brand’s official website.


  • Sleek design and weightless (2.6 kgs).
  • LED indicators to let you know the mode of operation.
  • ABS plastic durable body.
  • Easy to install without the need of a technician.


  • Some users reviewed that it doesn’t provide constant output voltage.

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2. Microtek EM4170+ Voltage Stabilizer for Inverter AC 

Microtek EM4170+ Voltage Stabilizer for Inverter AC If you want to protect your inverter AC but don’t want to spend much on a stabilizer then this is the ideal option for you. The Microtek EM4170 is suitable for up to 1.5 ton AC. It also has high and low voltage cut-off protection like V-Guard. Operating voltage for this stabilizer is 170V to 270V.

This is definitely a much affordable option but comes with a few limitations. This is why it is our 2nd recommended AC stabilizer. For example, Microtek lacks the time delay feature. And the design is also not very eye appealing like the V-Guard.

But the best part is it comes with 3 years warranty and also offers on-site servicing. You can also mount it on your wall.

Safety Features:

  • High and Low Voltage Cut-off,
  • Internal Thermal Management,
  • Auto Start,
  • Advanced Micro-Chip Controlled Operation,
  • Wall mountable

Warranty and Service: 3 years warranty.

Microtek is the only stabilizer brand in India which offers onsite servicing. You can call them anytime at 7283838383 and ask for help. Going by the reviews most of them are positive. According to its users, the installation was super easy and customers were quite happy with it.


  • High and low voltage cut-off
  • Auto start after power failure
  • Internal thermal management
  • Wall mountable
  • Inexpensive


  • No time delay feature
  • Bulky design


Microtek voltage stabilizer is the best stabilizer in its price range. It will protect your valuable AC from voltage fluctuations without being heavy on the pocket. It lacks some features like the time delay, digital display but they are no major red flags. Overall, if you have a small budget and want to protect your AC there is no better option than this.

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3. MONITOR Voltage Stabilizer for Inverter AC

MONITOR Voltage Stabilizer for Inverter ACThe MONITOR 4-KVA voltage stabilizer is one of the most popular stabilizers in India. And it is our 3rd best AC stabilizer on the list. The input voltage range for this stabilizer is 170V to 270V. It has a copper coil due to which the power consumptions are exceptionally low. You can use it for up to 1.5-ton inverter AC.

Despite being the most energy efficient stabilizer, we placed it on 3rd because it lacks the additional safety features. Like time delay, thermal protection, LED display etc. which you get with V-Guard. It also costs more than Microtek.

On the plus side, it has high and low voltage cut-off protection. The design is sleek and compact. You can mount it on the wall or on the floor.


  • Durable Copper Coiling,
  • High and Low voltage protection,
  • Energy-efficient,
  • Wall Mount and Floor Mount

Warranty and Service: 5 years of warranty

MONITOR stabilizer comes with 1-year free replacement warranty on manufacturer defects (including parts, transformer). For an additional 4 year warranty, you need to send an email with product details at monitorwarranty@gmail.com within 10 days of your purchase.

For any other service-related issues, you can call MONITOR customer care at 040-65151617/ 040-24745279


  • 100% copper wiring
  • Energy efficient
  • Small and compact design
  • High and low voltage protection
  • Both wall and floor mounting options
  • 5 years warranty


  • No input-output display
  • Honouring 5 years warranty can be difficult


MONITOR voltage stabilizer is a unit with great energy savings, smart and sleek design, and high-low voltage protection. It doesn’t have the high-tech safety features like V-Guard but offers decent operation and reliable warranty. Choose it if you cannot afford V-Guard voltage stabilizer.

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Best Voltage Stabilizers for TV

4. V-Guard Voltage Stabilizer for TV

V-Guard Voltage Stabilizer for TVFor a small TV and a small living room, you also need a small size stabilizer to fit and to look good. This V-Guard Voltage stabilizer is the ideal choice for a TV with up to 32-inch screen.

You can connect your LED TV along with the set-top box. The input voltage range for this stabilizer is 90V to 290V. This is enough to protect your valuable device from wide range voltage spikes.


  • Thermal Overload Protection,
  • High and Low Voltage Cut-off Protection,
  • Spike Protection,
  • Short Circuit Protection,
  • Digital Display

Warranty and Service: 3 years warranty. It has a 1-year standard warranty. For additional 2 years of warranty, you need to register to their site with genuine product details.

Talking about this particular product there was hardly one or two complaints regarding warranty and service. For any further queries, you can call V-Guard customer service at 1800-103-1300 or 1860-180-3000 or email at: customercare@vguard.in


  • TV+ Set-top box stabilizer
  • Thermal overload protection prevents overheating and burning out
  • Advanced IC technology senses the smallest voltage fluctuation and ensures a safer output voltage.
  • Spike protection protects the expensive parts from damage due to sudden voltage spikes
  • Digital monitor
  • 3 years of warranty


  • Short wire length
  • Cant connect anything other than a set-top box


V-Guard makes one of the best quality stabilizers and this is no exception. This V-Guard mini voltage guard is small, compact and loaded with all safety factors to keep your valuable TV safe. If you are using a small TV of 32-inch or less this will be the best value for money stabilizer.

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5. Everest ECC 100 Voltage Stabilizer for TV 

Everest ECC 100 Voltage Stabilizer for TV If you have invested in a large and expensive TV you also need to install a reliable stabilizer to safeguard them from voltage socks. This Everest ECC 100 stabilizer is made for the largest LED or smart TVs with up to 72-inch screen size. It supports voltage input from 170V to 270 V

With a 100% copper transformer, this stabilizer saves on energy wattage. You can connect your home theatre, Computer, DVD players and make them secure as well. You can either mount it on a wall or place in on the floor.


  • Copper Winding Transformer,
  • Low and High Voltage Cut-off,
  • Thermal Overload Protection,
  • Spike Protection,
  • Short Circuit Prevention,
  • Wall Mountable

Warranty and Service: 5 years warranty

Everest is quite popular. They provide reliable after-sales service. Considering the warranty service of this particular item, there is not a single issue reported by its users. For any kind information, you can call them at 08048983622.


  • Copper winding transformer saves energy
  • Time delay feature
  • Noise protection
  • Thermal overload protection
  • 5 years warranty


  • Small 2 pin socket


This 72-inch TV stabilizer has all the latest safety features but it doesn’t cost a bomb. The copper transmitter saves on your electricity bill and besides, you get 5 years of warranty on the product. Voltage operating range is comparatively shorter so carefully note the voltage fluctuation levels in your area.

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6. Microtek EMT1390 Voltage Stabilizer for TV 

Microtek EMT1390 Voltage Stabilizer for TV Microtek EMT stabilizer is the best choice for a medium-size TV with up to 48-inch screen. It can handle voltage range from 90V to 300V enough to protect during high voltage spikes.

If you have a well-decorated living room and want the best design stabilizer, this can be an ideal option. This stabilizer has a nice and sleek design and never looks dull with your interior decorations. You can also connect your set-top box or DVD player to its separate 2 pin socket.


  • High-low Voltage Cut-off Protection,
  • Save Power Technology,
  • Micro Chip Based Circuitry,
  • Wall mountable

Warranty and Service: 3 years warranty

In case you notice some damage or defect in the product you can raise a complaint to their official site. To claim the 3 years warranty you need to register your product with their site. For any help, you can call at 7283838383.  Or, send an email at ho@microtekdirect.com. Their customer service is available 24/7.


  • High-low voltage cut-off
  • Save power technology
  • The small and stylish casing
  • Great quality
  • Reliable customer service


  • No time delay feature
  • No thermal overload protection


This Microtek stabilizer is a powerful voltage stabilizer with wide range high-low voltage operating input. It is surely one of the best stabilizers for 32-48-inch TVs but with a slightly higher price tag. Going by the reviews this device is doing pretty well. There are only a few complaints regarding faulty products otherwise the majority of the reviews are positive.

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7. Monitor Voltage Stabilizer for TV

Monitor Voltage Stabilizer for TVIf you want to protect your LED TV from voltage fluctuations and don’t have any budget constrains then the Monitor Voltage Stabilizer can be a smart buy. It is ideal for TVs up to 65-inch screen. Voltage operating range is 140v to 290v.

This stabilizer is compatible with 3D TV, Smart TV, LED, and LCD TV. You can also connect your Home Theatre, Gaming Console, Computers, and Blue-ray Player, etc. This stabilizer has pure copper winding to save maximum energy. The only downside is its price tag which is much higher than others on the list.


  • 100% Copper Winding,
  • High and Low voltage protection,
  • Wall Mount/Floor Mount

Warranty and Service: 5 years. The actual warranty is for 1 year, in which you can claim for a replacement in case of service issue. For the additional 4 years warranty, you need to register with their site within 10 days of your purchase.

Now talking about the service of this model installing is super easy. Apart from a few defective product issues, there was no major complaint about its performance. For any warranty-related issues, you can at 040-65151617/ 040-24745279. Or, send emails at monitorwarranty@gmail.com


  • Copper winding
  • Energy saving
  • Low-high voltage cut-off protection
  • Two 3-pin sockets
  • 5 years warranty


  • Expensive product
  • No thermal overload protection
  • No short circuit protection


The performance of this stabilizer is undoubtedly good. It’s made with high-quality materials and safety features to protect the costly devices from voltage spikes. You also have 5 years of warranty. The main downside is the price factor. If warranty and power savings are your priority then go with Monitor Voltage Stabilizer.

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Best Voltage Stabilizers for other Appliances

8. V-Guard VGSD 50 Voltage Stabilizer for Refrigerator 

V-Guard VGSD 50 Voltage Stabilizer for Refrigerator We always recommend you to buy a refrigerator with in-built stabilizer. But in case you are using an old fridge or missed it somehow, here is the best stabilizer to protect them from electrical surges.

This is ideal for any single or double door refrigerators of up to 300-liter capacity. The voltage operating range is from 130V to 290V. You can also connect any type of digital displays like computer, Blue-ray player, gaming consoles, etc. This stabilizer is the smallest of all. But don’t confuse it with its performance. You can keep it at the top of your refrigerator.


  • Low/high voltage cut-off,
  • Time-delay,
  • Copper Winding,
  • Thermal Over-load Protection,
  • Spike Protection,
  • Short Circuit Protection

Warranty and Service: 3 years warranty. 1-year warranty on the product and 2 years additional warranty after registration with V-Guard

For this product also, most of the reviews have been positive. There are hardly any complaints with defective parts or warranty claims. If you feel you ever need assistance you can call customer care at 1800-103-1300 or 1860-180-3000 or send an email customercare@vguard.in or send an email to V-Guard.


  • Time-delay feature
  • Spike protection and thermal overload protection
  • Copper winding
  • Small and compact design
  • Energy savings
  • Ideal for both single and double door refrigerators


  • The plastic body looks flimsy


There is nothing to dislike about this V-Guard stabilizer. From its high-value features to its cute and compact design, it has it all not to ever disappoint you. The price is slightly higher than others but if you want to get the best value of your money, look nowhere else.

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9. Microtek EMR2013 Digital Voltage Stabilizer

Microtek voltage stablizer

If you are looking to purchase a voltage stabilizer for your refrigerator, this EMR2013 stabilizer is for you. 

With an input voltage range of 130V to 300V, this stabilizer provides the best protection to your fridge and other home appliances against voltage fluctuations and power spikes. 

It measures 21.8 x 19 x 10.4 cm and weighs 2.2 kgs, so you can place it on top of any appliance and it doesn’t occupy much space.

Safety Features:

  • Low and high cutoff for additional protection to your devices.
  • Time delay feature, making it suit all appliances.

Warranty and Service:

The stabilizer comes with a 2-year warranty against all the manufacturing defects from the brand.


  • High and low voltage cut-off.
  • Attractive colour.
  • Cost-effective.


  • Inefficient cord length.

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10. V-Guard VM 500 Voltage Stabilizer for Washing Machine

V-Guard VM 500 Voltage Stabilizer for Washing MachineChoosing V-Guard VM Voltage stabilizer is the best thing you can do to protect your new washing machines, microwave, ovens, and even treadmills. Voltage operating range of this device is 150V to 280V. And total current carry capacity is up to 14 Amps which is good enough for any washing machine or microwave ovens you choose to connect.

It comes with high and low voltage cut-off and a delay start after short-duration power cut to ensure maximum safety from electrical disturbances. The best part is, it looks decent and also wastes a lot lesser energy compared to other stabilizers.


  • High and Low Voltage Cut-off Protection,
  • Delay-start,
  • Primary Switching Technology,
  • ABS Plastic Body

Warranty and Service: 3 years warranty

Like any other V-Guard stabilizer this also has good responses from its customers. Still, if you notice any disputes you can register a complaint in their official site. Or, call the customer care at 1800-103-1300 or 1860-180-3000 or send an email customercare@vguard.in


  • Low and high voltage cut-off
  • Time-delay feature
  • Energy savings
  • Elegant design
  • Compact body
  • Reliable brand and after-sales service


  • You cannot connect more than one device


Every V-Guard stabilizer is a piece of mind. For your washing machine and microwave, we couldn’t find any other better option than this. Like it has it all from low/high voltage cut-off to time delay and power savings. We can’t say that it is inexpensive but it worth the price.

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Things to Consider Before Buying a Voltage Stabilizer

You cannot just let your new electrical appliances get damaged due to constant voltage fluctuations. Hence, buying a voltage stabilizer is a must and these factors will help you decide which stabilizer is the best for your appliances.

1. Stabilizer Working Range:

Before buying a voltage stabilizer for your home, it is very important for you to make a note of the input voltage range that you get at your place. Generally, you get an input of 230 V in India.

Also, check the range of the voltage stabilizer. If you are buying a stabilizer with a range of 150 V to 260 V, the stabilizer will automatically turn off the supply of current when the voltage either goes below 150 V or above 260 V. It will prevent the current from passing to the appliance in such scenarios.

However, if the voltage is within the working range i.e. between 160 V and 250 V, the stabilizer will start working on stabilizing the input voltage and set it accordingly to the desired range of output.

If you wish to connect more than one appliance to a stabilizer, it will be better if you buy a mainline stabilizer. This type of stabilizer is installed between the main power supply of your home and other appliances. It is designed to smoothen out the voltage fluctuations coming from the main power supply to provide a constant electric supply to all the devices. To read more about the mainline stabilizers, check this article.

2. Surge Protection:

You should always buy a voltage stabilizer that offers surge protection or spike guards. Whenever there is a short-circuit issue due to lightning or thundering, the voltage can fluctuate a lot.

During such conditions, the surge protection feature directly turns off the supply of current immediately to all the devices that are connected to the stabilizer. This ensures that none of the appliances are getting damaged.

3. Mounting:

As the voltage stabilizer works using electric power, there is always a risk of the stabilizer getting wet or damaged when you place it on the ground or somewhere unsafe.

Thus, most of the brands allow you to wall-mount the stabilizer so that you can place it at a safe and higher level. It not only protects the stabilizer from damage but also protects your family from the risk of electric shocks, especially if you have children at your home.

4. Indicators:

The modern voltage stabilizers come with special LED indicators that display the input and the output voltage. It also helps you in keeping a track of the voltage fluctuation levels and the performance of the appliances and the stabilizer. Almost every stabilizer that we have mentioned in our list comes with an indicator.

In earlier models, you would find the galvanometer-type indicators where you will have to understand the readings by carefully watching the movement of the arrows on the indicators.

5. Digitized:

Most of the brands are focusing on digitizing the voltage stabilizer to make it more reliable and accurate. These modern and digitized models work fine with most of the devices.

All you will have to do is shift the stabilizer from one appliance to the other and let it work. Some of these models can be even connected to the generators too.

6. Overload Protection:

Whenever there is a short-circuit or current overload, the overload protection feature helps in turning off the output of the stabilizer completely.

7. Time Delay Systems:

Compressor locks up if it is interrupted by a short term or monetary power outage (for less than 10-15 seconds). In this condition, the motor consumes a strong current. The compressor turns very hot due to this. When the over-temperature protection system shuts down the power supply, it can lead to the tripping of the compressor too.

This problem can be solved using the Power on Delay feature in voltage stabilizers.

As this power outage disturbs the functioning of the compressor, the Power on Delay function waits for the completion of Time Delay. Until then, it does not turn on the compressor again. This helps the compressor in coming out of this lock period.

8. Warranty:

Most of the brands offer a warranty period of 3-5 years on the voltage stabilizers to provide enough protection to the appliances at your home. Always make sure that you are buying a stabilizer that is engineered specially for the appliances at your home.

How do Voltage Stabilizers Protect Your Electrical Appliances?

Stabilizers are also called as Automatic & Safe Voltage Regulators. These are static devices that work on stabilizing the input voltage before passing it to the appliances directly.

A stabilizer identifies the voltage fluctuations beforehand and then regulates it in order to provide a uniform range of output voltage to the appliances.

If the utility voltage is low, the stabilizer figures it out and boosts it until it reaches the required level and then feeds it to the connected device to promote a hassle-free operation. When the voltage is high, it cuts off the voltage until it reaches the limit and then let it pass through the device.

The stabilizers perform this task using an electronic system that modifies the required taps of the in-built auto-transformer using high-quality electromagnetic relays in order to produce the desired voltage. Also, if the required voltage is not in the range, the required transformer tap is switched using a mechanism that brings the voltage supply in a safe range.

Thus, the stabilizer here functions as a safeguard between the utility and your appliances by constantly observing and stabilizing the voltage fluctuations continuously that appear in the utility. This process makes sure that the electric appliances at your home receive a consistent and stable range of voltage as required for a lag-free or hassle-free operation. It also increases the operational life of the devices.

Can Voltage Fluctuations Harm The Electrical Appliances At Your Home?

In India, the ideal input voltage in the home electric circuit ranges between 220 and 230 V AC (Alternating Current). Whenever the input voltage drops below 220 V or rises above 230 V, this is referred to as voltage fluctuation.

Circuit breakers are designed to protect the electrical circuits from any damage caused due to current overload or short circuit. Hence, you will notice that almost all the home circuits come with pre-installed circuit breakers. Due to this, in case of voltage fluctuations, the circuit trips off automatically and prevents the appliance from getting damaged.

When the current supply is restored, there are slight chances of surge in voltage. This surge often leads to damaging of appliance.

Thus, circuit breaker is very important as the appliances can get damaged due to low voltage. This is more applicable to the appliances that work using motor or compressors.

To deal with this issue, you must install a voltage stabilizer. Doing so ensures that the current first passes through the stabilizer and is then feed to the appliance.

What Causes Voltage Fluctuations in the House?

Voltage fluctuations are caused due to multiple reasons. One of the main reasons behind it is the fluctuation in the input supply from the main grid.

Inadequate earthing or bad wiring can also lead to voltage fluctuations. Sometimes, voltage fluctuation is also caused due to a short circuit.

In some cases, voltage fluctuation occurs whenever you switch on a high-powered appliance suddenly. Some of those appliances are electric motors, pump sets, or AC.

Overloading can also cause voltage fluctuations.

Frequently Asked Questions:

1. Are there different stabilizers available for different types of appliances?

Ans: All the voltage stabilizers are engineered optimally depending on the appliance that you are going to use it with. These stabilizers are distinguished on the basis of the energy limit along with the features of a particular electric appliance.

Each appliance has a certain energy limit and keeping these limits and restrictions in mind, the stabilizers are engineered accordingly. Different types of stabilizers *available in the market are:
*Stabilizers for refrigerators
*Stabilizers for air conditioners
*Stabilizers for washing machine, microwave oven, treadmill
*Digital stabilizer (for LED/LCD TV, music systems)
*Stabilizers for CRT TV
*Mainline Stabilizers

2. Are there different stabilizers for single-phase and three-phase?

Ans: Yes, there are. However, a three-phase voltage stabilizer is used only when the voltage stabilization is required for a three-phase motor or while stabilizing voltage for a full three-phase set up.

All the appliances that we use at home can work on a single-phase voltage stabilizer only. You might not need a three-phase voltage stabilizer until you are trying to stabilize the voltage of the entire house on a three-phase connection.

It is generally not recommended to put a stabilizer for the entire house as the voltage stabilizers also use electricity to work. Thus, if you are using it for the entire house, the stabilizer will consume electricity throughout the day. On the other hand, if you are using the stabilizer only for a particular device, you can switch off the stabilizer whenever you are not using the appliance.

3. Do the recent or modern models of ACs or refrigerators come with an in-built voltage stabilizer?

Ans: Most of the modern appliances like fridge and AC come with a bigger voltage range for hassle-free operation. This means that if the earlier models of the fridge worked between 200-240 V range, the latest models offer a bigger range of 170-290 V.

Thus, the refrigerators come with in-built low and high voltage cut-off but they don’t come with in-built voltage stabilizers. Using a voltage stabilizer might not be that important unless the voltage in your area shoots up or down beyond or below the limits constantly.

4. Do you need a stabilizer for a refrigerator?

Ans: Most of the modern models of refrigerators are engineered to handle large voltage range. As they use SMPS (Switch Mode Power Supply), they can work between the range of 110 V and 290 V.

You must check the power specifications of the refrigerator before buying a stabilizer for it. If the offered voltage range is large, you might not need a stabilizer at all. However, if the voltage range is low, then you should use a stabilizer. The earlier models of refrigerators need a stabilizer as they can get damaged due to electric surges (especially the ones that come with an inverter technology). Thus, you should either buy a stabilizer for the fridge that comes with a surge protection feature or buy a surge protector separately along with the stabilizer.

5. What is the electricity consumption of voltage stabilizers?

Ans: The electricity consumption of the voltage stabilizers depends majorly on its efficiency. Most of them are 95-98% efficient. This means the stabilizers consume around 2-5% of the maximum load.

So, if you own a 1kVA (or 1,000 VA) stabilizer, it will consume around 50 W on peak load. This means that if a 1 kVA stabilizer is working continuously for 10 hours, it will consume around 0.5 units of electricity. If you let it stay on for the whole day, it might consume a lot of electricity.

Hence, it is recommended to use a voltage stabilizer for a particular appliance than using a mainline stabilizer. If you use a mainline stabilizer, you will have to keep it turned on for the entire day throughout the year and it can have a huge impact on the electricity bill.

6. What do you mean by a step-up and step-down stabilizer?

Ans: The most important job of a stabilizer is to ensure that the output current is in the acceptable range of 220 V to 240 V. If the input voltage is less than 220 V, the stabilizer will increase the output voltage to reach a minimum level of 220 V. In this case, you term it as a step-up voltage stabilizer.

However, if the input voltage is too high than the standard range, the stabilizer will reduce the voltage to maintain the required limits. Here, the device acts as a step-down stabilizer.

7. What is the difference between a voltage stabilizer and an inverter?

Ans: An inverter converts DC into AC and allows the electrical appliances to work even when there is no power. The inverters come with a battery that lets you store electricity. This electricity is then used whenever there is a power cut. A voltage stabilizer, on the other hand, does not function like this.

The main responsibility of a voltage stabilizer is to stabilize the input current and make sure that the appliance that is connected to it receives electricity within the prescribed voltage range i.e. 230 V. If there is a power cut or outage, the stabilizer will also stop working.

8. Why do we still use UPS for computers rather than using voltage stabilizers?

Ans: Even though the voltage stabilizer can stabilize the output voltage, it cannot store electricity and power up an appliance in case of a power outage. Whenever there is a power cut, the computers need some time to save the ongoing works and then shut down without losing any data.

The UPS helps the computer in finishing these activities by providing the electricity supply even after the power cut.

9. Can the same stabilizer be used for AC as well as other appliances?

Ans: No! If you have a traditional rather regular stabilizer, you must not use it for AC as they both are not compatible with each other. An Air conditioner is in requirement of additional safety and hence, you need some additional built-in features to ensure both your stabilizer and the Air conditioning is safe. The additional features include, time-delay system often referred to as ITDS which makes sure the compressor of the AC has all the time for safety.

10. Will stabilizers save on electricity bills?

Ans: Such terms and conditions do not come with these devices; this is because stabilizer is no power saving unit or output. You can though expect saving up to an extent this is because the basic job of a stabilizer is to keep the power consumption stable and there are chances that some of the power may be saved in between the process. You may assume the stabilizer actually consumes its own fraction of power. The basic power wastage of a stabilizer is up to 5% in maximum, but if you use it on an excessive basis you may end up wasting up a lot more energy.

11. Do LED TVs need voltage stabilizer?

Ans: This purely depends on your perception of safety but if you ask for advice, the modern LED TVs do not necessarily need a voltage stabilizer in order to work. The reason for this is that TVs have the capability of working for a Voltage between 110 V and 290V. This is the reason why any of the fluctuations in the electricity would not affect the TV.

But there are some cases where the TV may get damaged, such as power surges and sudden spike in electric current. This is when you need a surge protector to save your TV, from such a sudden spike in electricity. In such a case you may choose to buy a stabilizer with a feature called surge protection.

12. What are some of the effects of voltage fluctuations?

Ans: You basically need a stabilizer when there is a lot of fluctuation in the voltage. You may notice a constant pattern of high and low fluctuations or may notice it all in a sudden especially after power cuts. But what stays constant is that your appliances will be prone to damage. The basic reasons for such fluctuations are bad wiring, overload, suddenly switching on or off high voltage devices, bad earthing or even short circuits.

13. Is there only one phased stabilizer?

Ans: There are different kinds of stabilizers as in different phased stabilizers. You will come across a one phased stabilizer and also a three-phased stabilizer. If you are in seek of residential use then a one phased stabilizer would suffice for your need. But in case you are looking to stabilize an entire house or a three-phase connection you are will need a three-phased connection. You need to dig deeper if you wish to know each and every aspect of the phase connections but hitting the web.


So, as you can see you need to have a basic understanding of few things before you can buy a stabilizer for your appliances. A stabilizer for AC can’t work on a refrigerator and vice-versa. Also, you need to know certain parameters like power consumption and voltage fluctuation etc to purchase the right one that can take the load of the appliance and even the input voltage.

Nevertheless, our top recommendation for ACs is the V-Guard VWI 400 Voltage Stabilizer for Inverter AC for TVs is the V-Guard Voltage Stabilizer for TV and for other appliances like refrigerators etc, it is the V-Guard VGSD 50 Voltage Stabilizer for Refrigerator As you can clearly see, all of them are from V-Guard. Be rest assured that we are not biased towards V-Guard. They actually make high-quality stabilizers and offers good customer service across India.

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