servo stabilizer

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Do you live in an area with constant voltage fluctuations? Are you concerned about the impact of voltage fluctuations on your 1.5-tonne AC?

If so, then all you need is a high-quality voltage stabilizer.

But today, so many stabilizers with different brands are available on the market. This makes it difficult to find the right stabilizer for your AC.

Worry not! In this article, we will discuss all the factors that must be kept in mind while choosing the perfect stabilizer for your 1.5-tonne AC.

We will also discuss all the important points to make an informed decision.

Why do you need a stabilizer for your AC?

Before getting into the details of the best voltage stabilizers on the market, let’s first try to understand why stabilizers are important for your AC.

AC units are designed to work within the range of a specific voltage. With the slightest deviation from the standard range, the AC can be damaged.

Voltage fluctuations could be in two forms:

Voltage fluctuation

High Voltage:

High voltage can cause damage to the internal mechanism and components of the AC. It also reduced the life span of the device. In some rare cases, high voltage can cause fire in the AC.

Low Voltage:

Low voltage negatively impacts the cooling capacity of the AC. With a lower voltage, the AC will slow down and frequently shut down.

Stabilizers work like buffers and help maintain a safe range of voltage. It regulates the incoming voltage and makes sure it doesn’t surge or drop out of a safe range of voltage.

These protect the AC from any potential damages and help it work at its optimum.

AC with a high-quality stabilizer is capable of working at its best and keeping the area cool even on the hottest days.

Choosing the Right Stabilizer for Your 1.5-Ton AC:

Let’s get into the decision-making factors for the best stabilizers for your 1.5-tonne AC.

The following factors are industry standards for picking the right stabilizer for your AC, and you can check on each of them before making the purchase.


The most important thing to consider before buying any stabilizer is its capacity. A stabilizer with a capacity of 4 kVA or higher is best suited to 1.5 tonne AC.

Stabilizers with lower capacities can malfunction in the AC. It can cause overloading and put the AC at risk.

That is why it is advisable to buy stabilizers with a capacity of 4 kVA or more for 1.5 tonne of AC.

Voltage range:

The stabilizer must be able to cover the range of fluctuation prevalent in your area of operations. The wider range it could cover, the better it is.

The range of 140V–290V is considered good for Indian conditions.

Types of stabilizers:

The most common type of stabilizer used for ACs is the servo stabilizer. They are not only reliable but also highly affordable.

Though servo stabilizers are the best, in extreme voltage fluctuations, you can also use relay stabilizers because they have a faster response time.

Some additional features:

Make sure the stabilizer has some sort of indicator or digital display to show the voltage level.

The stabilizer must have an inbuilt cut-off option in case of surge or drop voltage protection and spike arrestors.

Tips for Making an Informed Decision:

Advice from technicians:

If you are not sure about the range of fluctuation in your area or the voltage range for your AC, consult a technician who can guide you.

Read reviews:

It is very important to read reviews before buying any stabilizers. Reviews and ratings are easily available on Google and can give you additional information and insights regarding the product to make an informed decision.


Compare the prices, features, warranty, etc. before buying any stabilizer. Don’t just buy the cheapest one on the market; also compare brand reputations before purchasing one.

Post-purchase maintenance

It is important to maintain your stabilizer for its peak performance. Follow the instruction manual to keep the stabilizer clean. Check for worn-out components, lost connections, and cuts and breaks in the wiring.


Having a stabilizer to protect your AC from potential damage is essential. The 1.5-tonne AC requires a stabilizer with certain features and parameters.

The capacity of the stabilizer must be 4 kVA or higher. It should operate at a wide range of voltages, like 140V–290V.

Servo stabilizers are the best and most common options for 1.5-tonne ACs.

Make sure the stabilizer indicates the voltage level and has a spike arrestor along with cut-off options.

Compare the prices, features, and brand reputation before buying a stabilizer, and consult technicians. Also, read reviews and ratings before making the purchase.

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