Written I’m guessing you want to continue keeping the window open, and it would help if you can rule out if Pollution is the cause of your sleeping problems. Your sleep specialist might also benefit from this information. There are two ways to do this:The quick and dirty way:Use publicly available information to arrive at the kind of pollutants that are present in your neighborhood. Information is available at Bay Area Air Quality Management District website and also on AirNow. Details are also available on AQICN including the specific pollutants in areas where data is available. Attaching screenshot from AQICN for today’s data in SF:Once you know the kind of pollutant that is creating poor air quality, you can take SPECIFIC action against that pollutant indoors. Air purifiers will remove Particulates (make sure you get one with HEPA filtration), Volatile Organic Compounds (filter with activated carbon) but not most other gaseous pollutants like CO, CO2, NOx, SOx, etc. In all likelihood, the air quality would be poor or good based on particulates alone, for which your air purifier will be effective with WINDOWS CLOSED.

The correct and expensive way:If you aren’t happy with the QnD way, here’s the CnE way. Get the following:Particulate Air Quality monitor (eg. Dylos 1100 / 1700)CO and CO2 monitorNOx + SOx monitorMonitor for measuring hydrocarbonsMonitor for Volatile Organics (also hydrocarbons)While you’re at it, a monitor for Radon (radioactive, present in homes)Get readings for your place of residence, and take corrective steps against whichever pollutant is above normal. The website links shared above will help in determining acceptable pollutant levels.Again, unless the source of pollution is indoors (pet dander, dust mites, fungii spores, etc.), you want to keep your WINDOWS CLOSED.Do comment and let me know what worked for you!Written Hello,I can see where it may be confusing as indoor air quality can be up to 5 times worse then outside air quality. If you feel your allergies flare up when in your home it is most likely from dust and dust mites in the home and in order to help you and your allergies you will need an air purifier and a BAGGED vacuum.

The airflow of the window will stir up indoor allergens.If you want an air purifier you are going to have to keep the windows closed as it won’t be able to purify with air entering and leaving through the window. This is also the reason air purifiers are meant for only one room as they can’t purify all the rooms in the home because of the airflow of your house/apartment/condo etc.sharp air purifier sharpYou need a BAGGED vacuum because when you dump your bagless vacuum most of that goes back out into the air and will take weeks to settle back down onto the floor, furniture, and window sills etc. multi tech air purifierIt also travels beyond the room you dump your bagless vacuum in so dump it in your garage and it will still travel to your bedroom. personal wearable air purifier reviews

So using a bagless vacuum actually pollutes your indoor air quality where a bagged vacuum will hold all the dust and dirt inside the bag instead of reintroducing it back into the air. Lots of people who don’t think air purifiers don’t work use bagless vacuums. The two go hand in hand and if aren’t used together you won’t be doing anything but polluting your indoor air.I hope this helps.Updated Your question is like you are trying a test on your air purifier. there are guidelines and instructions on the usage of a appliance . Also the performance of an air purifier to purify the air around you is best when used in a closed environment. By this I mean in your homes cars and offices, where a limited amount of air is subjected to be purified . You should not stand at the traffic signal with a air purifier to purify the air, as you will not be able to know the difference in the natural air and purified air around you.Well the different types of home air purifiers, Hepa Purifier,Ionizer air purifiers are some of the appliances available in the market.

It is so small that it could be placed on a table top.So you’ve finally found an air purifier that ticks all the right boxes. It has all the filtering capabilities you want, as well as the right level of performance which includes the sufficient air flow rate, CADR and ACH numbers. However there is a catch. All those specs and figures have been measured in ideal conditions and as you know, the performance measured inside a lab is very different to a real life situation. When you place an air purifier inside a room and put it to work, the performance numbers are going to drop somewhat due to the fact that there are people in the room. The more people there are the more contaminants are created. Also, the air flow measured in ideal conditions doesn’t take into account the placement of obstacles. Household appliances and furniture disrupt the air flow of an air cleaner, making it less effective. Also, since the room is not hermetically sealed it will exchange air with rooms next to it each time you open the door.

So just to help you out, I’ve put together some information below that will help you properly size an air purifier before you buy it. Where to place your new air purifier should be top of the list. Theoretically, the best placement for an air cleaner would be right in the middle. But there is also the principle of diffusion to take into account. What does this mean? Well, as your air purifier filters, the air particles that are still airborne will begin to spread throughout the room keeping equal distance from each other – the principle of diffusion. But, the vacuum created by the fan will eventually pull them in as they circulate which means that by placing the purifier at one end of the room it will be able to clean the air on the opposite side too. Of course, one of the most important factors you need to consider when buying an air purifier is the size of the room where it will be used. Now, it is a given that you need to get an air purifier which is able to filter the air several times within the course of a single hour.

When you first install the purifier, the room pollution will be at its highest. Your goal is to have the cleaner cut down this level of pollution by as much as 80%. After that, it will require a lot less air changes in order to keep the air clean and crisp. When sizing an air purifier you also have to take into account the constant sources of pollution which can come from pets, cooking smells, dust and a whole host of other things. For an air purifier to be effective, you should really aim for 2 to 8 air changes per hour. The heavier and more consistent the pollution, the more changes you’re going to need. The structure and shape of a room is also important. If your room has stuff such as arches, pillars or a bar these will change the projected air flow pattern of the purifier, and therefore alter the numbers in the specs. Make sure to place the air purifier in a spot where it won’t be blocked by anything otherwise it won’t perform as well as it should. If you want to filter the air inside your bedroom for instance, you will have to think about how much noise it makes.