There are many reasons for wanting to employ an air purifier. Whether you are looking for cleaner air for your home, place of work, medical practice, or for any other reason, ensuring that the air around you is as clean as possible provides numerous health benefits as well as peace of mind.

Yes, you should keep your air purifier on all the time. By keeping your air purifier on nonstop, you can be sure that your air is the healthiest and cleanest air you could have. Purifiers absorb and remove smoke, dust, and dead skin particles from your air. Air purifiers with HEPA filters can remove up to 99.97% of unwanted particles in the air.

Reasons for Continuous Operation

The primary reason that air purifiers are made to run all the time is that germs, viruses, and particulates, do not only impact air quality at certain times throughout the day. Therefore, running your air purifier 24/7 is one of the only ways to ensure that your air is clear of contaminants.

Cleaner Air!

The most obvious reason to run an air purifier all day and all night is that you can benefit from breathing cleaner air on a continual basis.

There are many allergens and other harmful things in our air all the time. Being able to remove those dangers, comes with a host of health benefits. For example, breathing cleaner air aids in better brain function, higher energy levels, fewer adverse reactions to molds, pollens, and dust, and much more.

Beyond the many health benefits that come with breathing cleaner air, removing pollutants also helps you maintain a better smelling living space that requires far less maintenance in terms of grime buildup and dusting requirements.

Peace of Mind

Whether you live alone, with children, a loved one, or with a beloved pet, taking steps to improve the quality of the air you breathe goes a long way in providing the Peace of Mind you deserve.

Air that has been properly purified is certainly pleasant to breathe, but there are many other reasons to enjoy your air purifier as well. For one thing, knowing that you are taking the necessary steps to remove potentially harmful elements from the area you breathe is certainly enough to help you sleep better at night.

Best Use Practices for Your Air Purifier

While it is common practice to run your air purifier all day long, there are a few things that you can do to maximize the effectiveness of your air purifier. There are also things that you can do to avoid nullifying the effects of your air purifier.


A common concern for many when considering buying their first air purifier is how much it will cost to run the device. Due to cost concerns, many wonder if they should only operate their air purifier at certain times throughout the day.

The answer to how much it costs to run an air purifier 24/7 is dependent on the type of air purifier you plan on using. Similar to many other consumer electronics and household appliances, there are several different energy ratings that exist within the air purifier space. Some use more than others, but even the most power-hungry air purifiers do not use as much energy as you might expect.

To find the monthly costs of operating an air purifier all day and night, simply multiply the power consumption of the air purifier (e.g. 50W) with the number of hours in a month (720). Then, multiply the result with the cost of energy per watt from the power company.

Balance Cost and Clean Air

Although air purifiers run on surprisingly low energy and are inexpensive to run, some people still want to turn off their air purifiers from time to time to save money. In theory, that seems like a clever idea. In reality, however, it just does not work that way.

When an air purifier has not then active in a room for longer than two or three hours, the air in that room will be full of impurities. That means each time the air purifier is switched off to save energy costs, the air purification process will have to start from a zero state every time the device is turned back on.

It is, therefore, more cost-efficient to leave the air purifier on all the time. That way there is no need for the air purifier to work at full speed to give the room the initial cleaning that would be necessary otherwise.

Select Best Speed/Power Settings

An alternative to intermittently powering down your air purifier to save money is to adjust the power settings in an optimal way.

An example of how you can do this is to run the air purifier at full speed for two to five hours before turning the air purifier down to a medium setting. You can then leave the air purifier on the lower setting for continuous use. Following this example, you could benefit from cleaner air and lower operating costs at the same time.

In addition to adjusting speed and power settings to get the most out of your air purifier, you can also help the device do its job.

Maximize Effectiveness

Air purifiers work most efficiently when they are properly sized for the space they will be in, have plenty of room around them for proper airflow, and are located in and around areas that require the most purification.

Leaving doors and windows closed, for example, can go a long way in getting the clean air you are looking for without overworking your air purifying system. overwork leads to more frequent maintenance needs and higher operating costs overall.

Another thing that you can do to maximize the effectiveness, and thus reduce operating costs associated with running your air purifier 24/7, is to place the air purifier unit next to sources of pollution and odor. If you own pets, placing the air purifier near a pet bed or cat box will make the purification process occur faster and more efficiently.


As you can see, there are many reasons for leaving an air purifier running all the time. Not only can you enjoy cleaner air and better health, but your home ends up being cleaner as well.

it is good to keep in mind that appliances made to run on a non-stop basis require regular maintenance. In the case of air purifiers, one of the most common maintenance tasks you will perform are filter changes. Not all air purifiers utilize filters, however, so it’s a good idea to check with the documentation of your product when planning a maintenance schedule.

Related Questions

How often should I change the filter in my air purifier?

Many people wonder how often they should change the filter in their air purifier. The answer is dependent on a couple of factors. the first consideration involves how many hours per day the air purifier is running. For air purifiers that run 24/7, changing the filter once every few weeks is considered standard practice.

Another area to look at is the quality of the air being purified. In areas with elevated levels of particulates and dust, and air purifiers filter will need to be changed more often.

It is important to remember, however, that even in the absence of high concentrations of particulates filters still need regular changing to ensure optimal efficiency of your air purifier.

Do all air purifiers work in the same way?

Not all purifiers operate using the same technology. As each type of air purifier comes with its own set of pros and cons, it’s a good idea to look into how various air purifiers work. The most common types of air purifiers are ionic air purifiers, Activated carbon air purifiers, HEPA air purifiers, and ozone air purifiers.