The Only Inverter Buying Guide You’ll Ever Need

Sep 12, 2025

We all find power cuts frustrating, especially when we are dealing with sweltering summers or freezing winters. Unexpected outages can keep us in the dark (literally!) and stop our online tasks, appliances, and whatnot. Inverters are an invention that helps humanity deal with such scenarios with ease. Which inverter to choose as your personal power savior that can keep all important things running smoothly is a question that arises. A right home inverter buying guide eases up the brainstorming. 

This power inverter buying guide walks you through everything you need to know before buying an inverter for home or workspace. Read on to explore the key inverter buying tips.

Why Do You Need an Inverter?

We are all no fans of frequent power cuts as they take away the basic need for a fan. Instances apart, they simply disorient daily life. Inverters are lifesaving backup power solutions. They are designed to store electricity and supply it to your appliances later when there are power cuts or grid failures. These appliances are –

  • Noiseless
  • Low-maintenance
  • Eco-friendly

But to choose the right one, you need to understand a few things. Further sections have a step-by-step inverter buying guide for home any other place where you would need an inverter.

Step 1: Know Your Power Requirements

First things first, you have to calculate your total power consumption during an outage. Let us see how:
Make a list of appliances you want to run when the power goes out and sum up their wattages.

AppliancePower (Watts)
2 Tube Lights60
1 Ceiling Fan70
2 CFL Bulbs40
Total170 W

Step 2: Understand Inverter Battery Basics

The inverter is just one part of the system. There is a inverter battery also involved where the main action happens. So, you need to know a few things there:

The battery capacity, which is given in Ampere-Hour (Ah). It shows how long your inverter can run the appliances. You can calculate the battery size as follows:

Backup time (in hours) × Power requirement (in watts) = Watt-hours

Convert Watt-hours to Ah using:

Ah = (Watt-hours / Battery Voltage)

See this example:

If you need 170 watts for 6 hours, you will need roughly a 150 Ah battery (assuming 12V).

Step 3: Choose the Right Inverter Capacity (VA Rating)

Now, you can calculate the VA rating of your inverter, which is inverter capacity.

Use this formula:

VA = Power Requirement (Watts) ÷ Power Factor

Note: The Power Factor for homes is typically 0.7 to 0.8

See this Example:

VA = 170 W ÷ 0.7 = ~243 VA

Round it up to 250 VA to avoid overloads.

Tip: Always pick an inverter with a slightly higher capacity than your actual need for longer life and better performance.

Step 4: Square Wave vs. Pure Sine Wave Inverters

TypeDescriptionBest For
Square WaveBasic, budget-friendlyBasic appliances only
Pure Sine WaveSmooth, stable power, saferTVs, refrigerators, PCs

Tip: Always opt for Sine Wave inverters if
you want to protect sensitive electronics and ensure higher efficiency.

Step 5: Match Inverter Size to Home Type

This quick cheat sheet will help you match your home with the right inverter
setup:

Home TypeInverter CapacityBattery CapacityAppliances Covered
Small Apartment250 VA100 AhLights, fan, TV
Medium Home500 VA150–200 AhRefrigerator, multiple fans, lights
Large Home800–1000 VA200 Ah or moreWater pumps, A/Cs, refrigerators, multiple rooms

Bonus Tip: Check Home Wiring Compatibility

Source: Freepik

Before finalizing your inverter, check your home’s wiring. They must be compatible with an inverter setup. Improper or non-suitable wiring can damage your appliances and your inverter as well. Get expert consultations to help with installation and compatibility checks.

Why Choose Livfast Inverters?

At Livfast, we believe that power should never slow you down. That is the reason why our inverters are built to charge up to 25% faster. This extra speed ensures less downtime and more reliability when you need it the most. After all, Faster Hai Toh Hai!

Smart Inverters for Smarter Homes

Our inverters are power backups powered by Artificial Intelligence for seamless energy efficiency. With smart charging, optimized performance, and intelligent features, we make sure your inverter is always ready so you never miss a beat.

What Makes Our Inverters Stand Out:

  • Advanced Micro-Controller-Based
    Design
  • Low Voltage Charging
  • High Load Carrying Capacity
  • Extra Backup During Outages
  • Maximum Safety
    • Auto reset
    • Battery overcharge and deep
      discharge protection
    • Reverse polarity alerts
    • MCB protection
    • Fault display

Our Range of Inverters

An inverter purchase guide is incomplete if it does not mention the best options. At Livfast, we have two types of inverters basically:

1. Flashcharge – Sine Wave Inverters

The Flashcharge series is designed with pure sine wave technology. They offer smooth, silent, and efficient power delivery that is ideal for running sensitive and high-end appliances at home.

Available Models:

Model NameCapacityVoltageTechnologyWarranty
FCS17251500 VA24VPure Sine Wave36 Months
FCS16251500 VA12VPure Sine Wave36 Months
FCS1125+900 VA12VPure Sine Wave36 Months

2. Bolt – Square Wave Inverters

The Bolt series is for those who need reliable backup at an affordable price. They offer
the best of both worlds with square wave technology, dependable performance, and essential safety features.

Available Model:

Model NameCapacityVoltageTechnologyWarranty
Bolt 600VA600 VA12VSquare Wave36 Months

No matter what size your place is, we have a suitable inverter that will align with your
lifestyle and power needs. You can now enjoy faster charging, smart controls, and robust protection with Livfast
inverters. 

Wrapping Up

Now that you have gone through the inverter buying guide, you are free to speculate and make your own decisions. Because buying the right inverter doesn’t have to be confusing. Have these pointers on your tips: 

  • Know your power needs
  • Choose the correct inverter and battery size
  • Pick the right type for the best safety and performance
  • Match your system to your home size
  • Ensure proper wiring and installation

With the right setup, you will never dread another power cut again. Ready to bring uninterrupted power into your life? Keep your home running with the right inverter—no matter what!

FAQ's

What is the function of an inverter?

Inverters convert direct current (DC) into alternating current (AC). Their main function is to store electrical energy in DC sources like batteries or solar panels and power AC devices, such as household appliances.

Is this Helpful?

The most popular kind of battery is lead-acid, which is also normally less expensive. They need more upkeep, though, and are heavier as well. Although they cost more, lithium-ion batteries are lightweight and demand less maintenance.

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If you plan to use both grid and solar power, choose a solar hybrid inverter. Also, even if you’re not going solar today, buying a hybrid inverter ensures you’re ready when you do.

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