How do you identify which air purifier size is best for your situation? Air purifiers come in a variety of sizes, and this article explains how to figure out which one is right for you.

Answering this critical question is important if you do not want to wind up with an air purifier that is either too large or too little.

This is an important step to take when figuring out how to choose the right air purifier for your home.

Getting an air purifier of the right size is important because it makes sure that the unit will work best in a room.

An air purifier that is too small simply will not do the job. Due to its small size, it is unable to maintain an adequate level of air quality. It’s a waste of money to buy an air purifier that’s too big. To top it all off, it’ll cost you more money to run than a cheaper alternative. It is a waste to have this much capability.

If you follow the advice in this guide, you won’t have to worry about running into this problem in the future.


Air Purifier Room Size Guide

Depending on the size of the room in which you want to purify the air, there are four sizes of air purifiers to choose from.

Small: Personal settings and rooms up to 200 square feet can benefit from this device.

Medium: Rooms between 200 and 400 square feet are suitable for this.

Large: Ideal for spaces ranging in size from 400 to 1,500 square feet.

Whole House: Good for cleansing all areas of the home.

Choosing The Righ Air Purifier Size

To begin, think about where you want to put the air purifier. It’s also important to know how much space it will be occupying inside. The question is, “Is this for one room or several?”

Before purchasing an air purifier, you need to know how much room it will cover. To put it another way, you need to know how much space the air purifier will cover. Please use square feet as the unit of measurement for this space.

The process of determining the size of a small room is a piece of cake. Using a measuring tape, measure the lengths of the two sides. Calculate the area by multiplying the values.

A little more math is required when calculating the total area of many rooms. For each room, simply repeat the steps outlined above. Square feet are the units of measurement for these areas. To get the overall area, add up all of these sections. This is the solution to your question.

Where You Will Be Placing The Air Purifier

When deciding the size of an air purifier, the most important consideration is where you intend to place it.

No matter how big or little your home is, there is a solution for you.

The answer to that question will help you narrow down the best product for your application and make it easier to compare air purifiers.

Measure The Area

how big of an air purifier do i need

Once you’ve decided on a room, the next step is to calculate out the square footage of the area you wish to purify.

This is a simple task if you only have one room.

All you need to do is measure the two parallel walls with a tape measure.

Determine the room’s square footage this way.

For example, a 10′ x 12′ room = 120 sq. ft.

If you want an air purifier that can clean the air in numerous connected rooms, calculate the length and width of each room individually and then sum the totals.

For instance, if we have two adjoining rooms, each measuring 120 square feet and the other 80, the total square footage would be 120 + 80 = 200 square feet.

The simplest way to figure out how big an air purifier should be for a whole house is to look at the documentation from when you bought the house.

Your home’s whole square footage should be included in that layout.

A simple technique if you can’t find this documentation is to go out and measure the length and width of your external walls.

Then multiply that value by the number of levels in your house.

For example, if your home has two levels and the outside square footage is 1,200 square feet, the answer is 1,200 x 2 = 2,400 sq. ft.

Match the Air Purifier’s Square Footage Rating to Your Room Size

All air purifiers have a maximum square footage rating and come in a variety of shapes and sizes.

Because of this, all air purifiers are only effective in a certain room size.

Choosing the right air purifier size depends on the size of the room in which you intend to place it. When shopping for an air purifier, it’s best to seek for one that has a coverage area that’s almost identical to your room. Doing so will maximize the benefits from your air purifier.


We hope you found this guide to air purifier size selection helpful.

How big of an air purifier do I need? depends on the total square footage of the room you want to purify, as you’ve discovered.

So, in order to get the cleanest air possible, you’ll need a unit that meets or surpasses this specification.

Make sure to measure the room before purchasing a new air purifier. Your home will benefit from the most efficient unit this way.