What UPS Size Do You Need for a 1BHK, 2BHK or Villa? Explained Simply

Power outages are a regular problem in every house. To solve this, people use a UPS (Uninterruptible Power Supply). A UPS makes your lights, fans, and some other necessities functional during power outages. However, before buying the best UPS inverter for home you need to know the right size for your home.

This blog will tell you how large a UPS you need to have if you live in a 1BHK, 2BHK or a villa.

What Is a UPS and Why Do You Need It?

A UPS is a device that supplies power to your home during a power failure.It runs on batteries. During the period electricity switches off, the UPS gives you electricity for a specific amount of time. It helps you keep lights lit, use fans, charge your phone, and other small appliances.

Without a UPS, your home will remain dark and devices won't work at all during a power outage. Best UPS for home makes you comfortable and safe during such situations.

Why UPS Size Matters

If your UPS is not of sufficient size, it will not be able to power all that you need. If your UPS is oversized it will cost more than it should.Therefore, you must choose the best UPS inverter for home based on the number of rooms and appliances you have at your residence.

• The "size" of a UPS does not relate to how big it is.

• It relates to how much power it can deliver and for how long.

• It is rated in VA (Volt-Amperes) or kVA and in battery capacity (Ah – Ampere hours).

UPS Size of a 1BHK House

A 1BHK house generally has:

• 1 bedroom

• 1 hall

• 1 kitchen

• 1 bathroom

In a 1BHK, everyone will probably want to use some lights, fans and maybe a TV or Wi-Fi router during a power outage.

To do this in this configuration, you can use a UPS of:

Power rating: 600 VA to 900 VA

Battery: 100Ah to 150Ah

This will be enough to drive:

• 3–4 LED lights

• 2 ceiling fans

• 1 Wi-Fi router

• 1 TV

This will continue for about 2 to 4 hours, depending upon battery strength and the number of devices operating at the same time.

UPS Size for a 2 BHK Flat

A 2 BHK flat has:

• 2 bedrooms

• 1 hall

• 1 kitchen

• 1 or 2 bathrooms

Here, power demand is greater as you have more rooms and possibly more people. You may need to run lights, fans, a TV, a router, and a mobile charger in different rooms.

For a 2 BHK home, choose a UPS with:

Power rating: 1000 VA to 1500 VA (1 kVA to 1.5 kVA)

Battery:150Ah to 200Ah

This will provide support to:

• 5–6 LED lights

• 3–4 fans

• 1–2 TVs

• 1 Wi-Fi router

• Mobile/laptop charging

1-hour backup is guaranteed with this. If you require longer backup, you can choose two batteries.

UPS Size for a Villa or Big House

A villa or big house usually has:

• 3 or more bedrooms

• Large living room and kitchen

• Additional appliances like air conditioners, water pumps, or fridges

If you intend to use stronger equipment in case of a power outage, you need a bigger UPS system. For villas, the majority of people go for a home inverter system or solar UPS system.

For a villa, choose:

Power rating: 2 kVA to 5 kVA or more

Battery: 200Ah or multiple batteries in series

This system can support:

• 10+ lights

• 5+ fans

• Multiple TVs

• Computers

• Fridge (if required)

This offers 3–6 hours of backup, depending upon the load usage. For large villas, you can even have a solar UPS with a battery bank or a diesel generator if required.

How to Choose the Right UPS

Know your power needs: Count the number of lights, fans and other appliances you want to run when there's a power cut.

Test the power of all the devices: Lights will consume around 10 to 15 watts, fans approximately 70 to 90 watts, and TVs approximately 100 to 150 watts.

Calculate total wattage:Add all the watts and multiply them by 1.4 to find VA. Example:400 watts × 1.4 = 560 VA.

Choose battery capacity: Higher batteries give more backup time. 100Ah can give power for about 2–3 hours for small houses.

Consult a professional: If you're still uncertain, a UPS retailer or an electrician will advise you.

Final Thoughts

Choosing the appropriate size of a UPS depending on how many devices have to be powered during a blackout and for how long the backup power runs is determined by the kind of house you own. For a small house like a 1BHK, a small UPS is needed. A 2BHK will need a medium-sized one. A villa or large house needs a high-power system.

Always consider the power consumption of your home before buying. If you procure a suitable size UPS, you will have light, comfort and peace of mind even during power cuts.

If you are still in doubt, it is always best to consult an expert before making a decision.