Does inverter ac need stabilizer [Each Variety Explained]

A stabilizer in an AC is different than an AC filter. While an AC filter’s main function is to filter the air so it will be free of dust and other unwanted particles, a stabilizer’s function is to preserve the voltages’ normalcy in the power installation of the AC. Still, does AC need stabilizer?

What are the types of stabilizers? How do they work, or, how can we make them work? What about the types of AC that need a stabilizer? Those questions are the questions that we’ll cover more in this article.

The types of stabilizers

There are two types of AC stabilizers, which are the relay and the servo stabilizers. The relay stabilizers are usually for cheap AC products that don’t need much power supplies, while the bigger-sized and more expensive AC products usually use servo stabilizers.

The relay stabilizers use many relays to ensure faster responses in stabilizing the AC’s voltages without having to cut off the power supplies. At the same time, the relay stabilizers can only increase or decrease the AC’s voltages one level from the normal voltages.

On the other hand, the servo stabilizers can increase or decrease the AC’s voltages as much as you’d want to. Yet, their responses in stabilizing your AC’s voltages may not be as fast as or faster than the relay stabilizers.

How do stabilizers work?

There is the essential operation named “The boost and buck operations” in describing the ways stabilizers work in an AC. You can use the manual ways by switches or the automatic ways using electronic circuits to make the operation works.

The stabilizers’ operation begins and ends with the AC unit. The stabilizer, along with the transformer that is connected to the different switching relays’ configurations, is placed between the processes to add or subtract the AC’s voltages

In the whole process, the stabilizer and the transformer work together in supplying your AC with consistent electric voltages. These ways, you will prevent your AC from getting over or under-voltages.

The types of AC

Just as there are different types of stabilizers, there are also different types of AC that can be attached to the different types of stabilizers.

Central air conditioners, portable air conditioners, smart air conditioners, hybrid or dual-fuel air conditioners, are the most popular types of AC that can connect to relay or servo stabilizers. 

Apart from those types of AC, there is also another AC that is called the inverter air conditioner. Some people think people living within stable-weathered environments shouldn’t worry about attaching a stabilizer to their inverter AC. Yet, some people insist the inverter AC should work hand-in-hand with a stabilizer, no matter what.

So, does AC need a stabilizer? In other words, does inverter AC need a stabilizer that badly? We’ll answer those questions in the next points of this article.

Does inverter ac need a stabilizer?

Along with the non-fluctuating weathers, people living in stable-weathered environments tend to worry less about their AC units as well as the components, such as the stabilizers. More so when they live in environments that contain lesser wastes than other environments.

As a result, many of these people find it unnecessary to add or maintain a stabilizer in their inverter AC units, especially if the inverter AC is of a modern one. After all, an inverter AC has more potentials in balancing the power supplies in the whole AC unit compared to other types of AC.

Is inverter ac need stabilizer? Can inverter ac run without stabilizer? An inverter AC doesn’t need a stabilizer… Only in certain situations. For example, some inverter AC units are equipped with the S-UTR compressors, the inbuilt stabilizers which the internal mechanisms are the same as the stabilizers that we connect outside the AC units.

Yet, not all inverter AC units are equipped with such compressors. Even the inbuilt stabilizers’ manuals state that the companies can’t guarantee the inbuilt stabilizers will be 100% safe from drastic power depletions. In other words, the inbuilt stabilizers can only protect within certain ranges of voltages.

That being said, you need external stabilizers for your inverter AC. In cases where the ranges of voltages can no longer be tolerated within the inbuilt stabilizers’ capabilities, you can use the external stabilizers as your backups. After all, the stabilizers are there to ensure your inverter AC doesn’t experience over- and under-voltage conditions.

Does voltas inverter AC need a stabilizer?

No, you do not need an additional stabilizer for your Voltas inverter AC because the unit is designed to work perfectly well on a relatively low voltage of about 100v.

Does Daikin inverter AC need a stabilizer?

No, according to Daikin technicians, Daikin inverter AC does not require an external stabilizer to function because it has an inbuilt stabilizer that can cut off power during power fluctuations.

Does blue star inverter AC need a stabilizer?

No, Blue star inverter AC does not require an external stabilizer. According to the information extracted from the Blue star inverter AC instruction manual, the inverter comes with an inbuilt voltage stabilizer that operates on a trouble-free voltage range of 160 volts to 270 volts, therefore, the external stabilizer will be unnecessary.

Does carrier inverter AC need a stabilizer?

No, the Carrier inverter AC does not need an external stabilizer.

Does Hitachi inverter AC need a stabilizer?

Yes, you will need an external stabilizer for your Hitachi inverter AC and thus us because your Hitachi inverter AC can only work within a specified voltage range. Anytime the voltage of your AC drops below the minimum range you will need the external stabilizer to keep your AC running. The best stabilizer you can get for your Hitachi inverter AC is the Ryoku 4 kva ac stabilizer.

Does Lloyd inverter AC need a stabilizer?

No, you do not need an external stabilizer for your Lloyd inverter AC. Lloyd inverter AC comes with an Electronic Expansion Valve that makes necessary adjustments to the flow of refrigerant to make sure there is efficient and better cooling even if your AC unit is operating at fluctuating temperature levels. Lloyd inverter AC works efficiently under the voltage range of 140v to 270v.

Does Whirlpool inverter AC need a stabilizer?

Yes, you must have an external stabilizer on standby for your Whirlpool inverter AC because it can also only work under a certain level of voltage.

Does Samsung inverter AC need a stabilizer?

No, you are not going to need an external stabilizer for your Samsung inverter AC provided it has an S-UTR compressor. This compressor helps your Air conditioner to automatically stabilize its voltage.

Does Panasonic inverter AC need a stabilizer?

No, the modern Panasonic inverter AC does not need an external AC because it runs stabilizer-free operation which conditions it to perfectly handle any voltage fluctuations that can affect your appliance.

Does inverter AC have an inbuilt stabilizer?

Yes, inverter AC has inbuilt stabilizers. Inverter AC is equipped with inbuilt stabilizers that protect your AC unit from damage should in case there is a power surge in your area. However, there are certain limitations to the protection that can be offered by an inbuilt stabilizer against power fluctuations. And as a result, HVAC technicians often recommend that building managers and homeowners have an external voltage stabilizer on standby to support the inbuilt stabilizer if their limit is reached.

Does dual inverter AC need a stabilizer?

You do not need a stabilizer if your AC runs on a dual inverter unless the power in your area fluctuates beyond the standard voltage range of between 145 to 290v. Your dual inverter AC can handle any fluctuations below that range so you wouldn’t need a stabilizer. To assist you with accurate measurements of the voltage of your AC, you can make use of an ampere meter. You can order an ampere meter from online stores.

Is it safe to use ac without stabilizer?

Yes. You can use your air conditioner without a stabilizer. Just make sure every component in your air conditioning unit functions well will do and proceed with aircon servicing at least once per year.

Best stabilizer inverter for AC

To ensure that your AC unit is always operating at optimal performance, you must keep its operation within the specified voltage range. Using an AC unit under a low or high voltage will sure impact negatively on its performance.

The best way to keep the voltage of your AC unit regulated is by using a stabilizer. Although some AC units come with an inbuilt stabilizer, it is always recommended that you have an external stabilizer to support the entire operation of your system. Acquiring the stabilizer model that best suits your AC unit will ensure that you have optimal results.

Unfortunately, this is not a task that can be easily achieved unless you are adequately informed, and that is why in this section, I will be providing detailed information on the top 5 best stabilizers you can use for your inverter AC.

1. V-GAURD i4 Dura 2040 stabilizer

Top on the list of stabilizers for inverter AC is the V-GAURD i4 Dura 2040. This stabilizer is top on the list because of its durability and some special features which include; Wide voltage range, microcontroller, wall mounting option, thermal overload protection, and 3-year warranty.

Wide voltage range

V-GUARD i4 Dura 2040operates on a voltage range of 160 to 280 volts AC power. The range is made wide to enable your AC unit to operate uninterruptedly on any possible power fluctuations.


V-GUARD i40 Dura is also equipped with a microcontroller that ensures efficient and accurate power adjustment is made during fluctuations. This special feature time delay mechanism is considered to be intelligent as it provides your AC unit a sufficient amount of balancing time if you experience recurrent and occasional power outages. This will lower the chances of your compressor getting overheated.

Wall mounting options

This user-friendly feature allows homeowners to secure the safety of their stabilizer against water spillage, accidents, and dust.

Thermal overload protection

V-GUARD i40 Dura has inbuilt thermal overload protection that protects your appliance against heat-induced damage due to overexposure to intense heat during summer.


Every user of V-GUARD i40 Dura 2040 is entitled to a 3-year offsite warranty that ensures damaged components are replaced or repaired if damages should occur during the stipulated time of warranty.

2. V-GUARD VIG 400 Digital Display

This is the second most popularly used stabilizer in India; being one of the countries with the most unpredictable power fluctuation. The V-GUARD is equipped with a protective feature that protects your equipment against any high or low spike and surges. It also has a very sleek finishing which makes it attractive and a perfect blend for any room design.

The stabilizer is considered to be one of the cheapest and has a good quality digital display that shows users the exact performance level of the equipment. The digital display is aesthetically designed with blue halo light indicators around it.

The V-GUARD VIG 400 operates on a voltage range of 170 to 270 volts of AC power. Although do not cover a wide range like the V-GUARD i40 but it sure can also handle any major power fluctuations in electricity supply.

The V-GUARD new VIG 400 is about 28cm wide, 23cm tall, and weighs about 3.2 km which makes it perfectly fit into any corner near your AC unit and has a premium quality aluminum winding.

3. Microtek EM4160+ Automatic Voltage Stabilizer

What makes this model one of our top 5 is how it operates. The stabilizer works by using its sensor to observe functioning in the current and then it stabilizes the current before transferring the stabilized current to your AC unit. This process ensures the safety of your appliances while increasing their lifespan and also, making it possible for you to save lots of electricity. All these are made possible simply because of the working principle of the stabilizer known as the save power technology.

The Microtek EM4160+ Automatic Voltage Stabilizer operates on a voltage range of 160 to 285 volts of AC power and has a fail-safe circuit design that allows a quick response fuse system that protects your equipment against energy fluctuations and major burnout.

4. Monitor Voltage Stabilizer

This stabilizer is designed with 100% copper which is a great electricity conductor which means the current will flow with minimal resistance. When a stabilizer is operating on a lesser resistance, it will become more energy-efficient and reduce overall energy consumption costs.

The Monitor voltage stabilizer operates on a voltage range of 170 volts to 270 volts of AC power. The outer part of the stabilizer is covered with epoxy which prevents rust as well as wear and tear. During a power surge, the monitor voltage can cut off the power supply to prevent your equipment from burning and damage. This is made possible because of the high-quality PCB that comes with the stabilizer.

5. Candes Crystal 4kVA Stabilizer

The Candes Crystal 4kVA Stabilizer operates on a voltage range of 130 to 285 voltage AC power. This stabilizer model is best suited for split AC and window air conditions. It has surge protection a specialized feature that protects your AC against overload, short circuits, power outages, and electricity fluctuations. It also has a time-delay system which provides your compressor with enough time to respond and cool down.

Another special quality of the Candes Crystal 4kVA Stabilizer is the thermal overload protection which protects your appliance against heat-induced damage. Candes Crystal 4kVA Stabilizer also comes with a 6-years onset and offset warranty.

Best stabilizer for 1-ton inverter split AC

The best Stabilizer for a 1-ton inverter split AC is the Microtek EM5170+ voltage stabilizer for inverter AC.

Best stabilizer for inverter AC 1.5 ton

You can use any of the aforementioned stabilizer models for a 1.5-ton inverter AC, but the best you can use is the Microtek voltage stabilizer.

Best stabilizer for 2-ton inverter AC

The best stabilizer for a 2-ton inverter AC is the V-GUARD VG 500.

Best stabilizer for LG dual inverter AC

The best stabilizer for LG dual inverter AC is the Bluebird copper 4KVA Voltage stabilizer.

How (And When) to repair my stabilizers?

Even though there are situations where it’s okay for you to not connect your inverter AC with the stabilizers, you still need them so you can prepare in case the voltage ranges can no longer be tolerated or anticipated.

Like any other AC components, your stabilizers can need repairs. While you can hire professionals to do them, you can’t always do it since hiring credible professionals can be costly.

So, these are the ways to repair your stabilizers:

Test And Check Everything First

You need to check if there are symptoms to be fixed, such as red lights flashing on your stabilizers and more. At some points, you may have to wait 2-3 minutes before the red lights turn green. Even when the lights have turned green, you should also ensure that there are outputs such as voltages on the outlet’s sockets.

Replace The Relays (When Needed)

These are the essential steps if you’re using relay stabilizers. You need to pull the relays out of the stabilizers to replace them. After you pull out the relays, go back to the first step: Test and check everything first for your relays, both inside and outside the circuits.

Buying new relays is not enough to replace the already-not-working relays. You should also repeat the first step for every relays that you want to replace.

Note: Ideally, you should repair your stabilizers as soon as you see signs of dysfunctions in your stabilizers. Some of those symptoms are overloading the output’s voltages, ac keeps tripping breaker, and more.

Seeking help from a professional should be your last resort when everything isn’t working even though you’ve done the steps to repair your stabilizers.

After all, you need your stabilizers in your inverter AC to work as they should be, so you don’t get the risks of over-and under-voltages.

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